JP6260073B2 - LENS BODY, LENS BODY AND VEHICLE LIGHT - Google Patents

Description

  The present invention relates to a lens body, a lens combination body, and a vehicle lamp, and more particularly, to a lens body, a lens combination body, and a vehicle lamp including the lens body used in combination with a light source.

  Conventionally, a vehicular lamp having a structure in which a light source and a lens body are combined has been proposed (see, for example, Patent Document 1).

  56 is a longitudinal sectional view of the vehicular lamp 200 described in Patent Document 1, and FIG. 57 is a top view showing a state in which a plurality of vehicular lamps 200 (a plurality of lens bodies 220) are arranged in a line.

  As shown in FIG. 56, a vehicular lamp 200 described in Patent Document 1 includes a light source 210 having a semiconductor light emitting element and a lens body 220, and the lens body 220 has a surface with a light emitting surface facing upward. A hemispherical incident surface 221 that covers the light source 210 from above, a first reflecting surface 222 (reflecting surface by metal deposition) disposed in the traveling direction of light from the light source 210 that enters the lens body 220 from the incident surface 221, A second reflecting surface 223 (a reflecting surface by metal vapor deposition), a convex lens surface 224, and the like extending forward from the lower end edge of the first reflecting surface 222 are formed.

JP-A-2005-228502

  However, in the vehicular lamp 200 configured as described above, the convex lens surface 224 that is the final exit surface of the lens body 220 is configured as a hemispherical lens surface. As a result, as shown in FIG. Even if the lamps 200 (the plurality of lens bodies 220) are arranged in a line, it is possible to form a vehicular lamp (lens combined body) that has an appearance that has a continuous appearance and has a sense of unity that extends in a line shape in a predetermined direction. There is a problem that it cannot be done (design flexibility is poor).

  This invention is made | formed in view of such a situation, and provides the lamp | ramp for vehicles provided with the lens body (lens coupling | bonding body) of the unity appearance with a sense of unity extended in the shape of a line in a predetermined direction. Objective.

  In order to achieve the above object, an invention according to claim 1 includes a first lens portion and a second lens portion arranged along a first reference axis extending in a horizontal direction, and light from a light source is the first lens portion. After being incident on the inside of the first lens part from the first entrance surface of the first lens part and partially shielded by the shade of the first lens part, and then exiting from the first exit surface of the first lens part; By being incident on the inside of the second lens unit from the second incident surface of the second lens unit and exiting from the second exit surface of the second lens unit and irradiating forward, the upper edge is defined by the shade. In the lens body configured to form a predetermined light distribution pattern including a cut-off line, the second emission surface has a semi-cylindrical shape extending in a direction inclined with respect to the first reference axis when viewed from above. The first exit surface is lead. A semicylindrical surface extending in a direction, the predetermined light distribution pattern is the surface shape so as to totally condensed, characterized in that it is configured as a lens body is adjusted.

  According to the first aspect of the present invention, firstly, it is possible to provide a lens body having a new appearance with a camber angle. That is, it is possible to provide an attractive lens body that has a sense of unity extending in a line shape in a direction inclined by a predetermined angle with respect to the first reference axis when viewed from above. Secondly, a predetermined light distribution pattern (in a horizontal direction and a vertical direction) is collected even though the second emission surface, which is the final emission surface, is a semi-cylindrical surface (a semi-cylindrical refractive surface). For example, it is possible to provide a lens body capable of forming a low beam light distribution pattern including a cut-off line defined by a shade at the upper edge. Thirdly, it is possible to provide a lens body in which a predetermined light distribution pattern is entirely condensed regardless of the camber angle.

  The appearance with a sense of unity extending in a line shape in a direction inclined by a predetermined angle with respect to the first reference axis is that the second emission surface as the final emission surface is a semi-cylindrical surface (semicircle) This is because the second emission surface extends in a direction inclined with respect to the first reference axis when viewed from above.

  A predetermined light distribution pattern (for example, an upper end edge) condensed in the horizontal direction and the vertical direction even though the second emission surface as the final emission surface is a semi-cylindrical surface (a semi-cylindrical refractive surface) The low-beam light distribution pattern including the cut-off line defined by the shade on the surface of the first lens portion is mainly the first light exit surface (semi-cylindrical refracting surface) in the horizontal direction. This is because the second light exit surface (semi-columnar refractive surface) of the second lens portion, which is the final light exit surface of the lens body, is mainly responsible for condensing light in the vertical direction. That is, it is due to the decomposition of the light collecting function.

  Although the camber angle is given, the predetermined light distribution pattern is entirely condensed because the first emission surface is a semi-cylindrical surface extending in the vertical direction, and the predetermined light distribution pattern This is because the surface shape is adjusted so that the light is totally condensed.

  According to a second aspect of the present invention, in the first aspect of the present invention, the lens body is a lens body having a shape extending along a first reference axis extending in a horizontal direction, and the first lens portion is The first entrance surface, the reflection surface, the shade, and the first exit surface are included, and the second lens unit includes the second entrance surface and the second exit surface, and the first entrance surface and the reflection surface. The shade, the first exit surface, the second entrance surface, and the second exit surface are arranged in this order along the first reference axis, and the first entrance surface is the first entrance surface. The light from the light source disposed in the vicinity is refracted and incident on the inside of the first lens unit, and the light from the light source incident on the inside of the first lens unit is at least in the vertical direction. Passing through the center and a point in the vicinity of the shade, and the first reference The light is condensed toward the second reference axis that is inclined obliquely forward and downward, the reflective surface extends forward from the lower edge of the incident surface, and the shade is It is formed in the front-end | tip part of the said reflective surface, It is characterized by the above-mentioned.

  According to the second aspect of the present invention, firstly, it is possible to provide a lens body in which a reflection surface by metal vapor deposition that causes a cost increase is omitted. Second, it is possible to provide a lens body capable of suppressing the melting of the lens body and the decrease in the light source output due to the heat generated by the light source.

  The reason why the reflective surface by metal vapor deposition, which causes an increase in cost, can be omitted is that light from the light source is controlled not by the reflective surface by metal vapor deposition but by refraction at the incident surface and internal reflection at the reflective surface. It is because.

  The lens body can be prevented from melting or the light source output from being reduced due to the heat generated by the light source. The incident surface is formed at the rear end of the lens body and the light source This is because it is arranged outside the lens body (that is, at a position away from the incident surface of the lens body).

  The invention according to claim 3 includes a first lens part and a second lens part arranged along a first reference axis extending in a horizontal direction, and light from a light source is incident on the first lens part. The light is incident on the inside of the first lens portion from the surface and partially shielded by the shade of the first lens portion, and then exits from the first exit surface of the first lens portion, and further, the second lens portion A predetermined line including a cut-off line defined by the shade at the upper end edge by being incident on the inside of the second lens part from the two incident surfaces, emitted from the second exit surface of the second lens part and irradiated forward; In the lens body configured to form a light distribution pattern, the second emission surface is a semi-cylindrical surface extending in a direction inclined by a predetermined angle with respect to the horizontal in a front view, and the first emission surface. The surface should be It is a semi-cylindrical surface extending in a direction inclined at an angle, and the shade is arranged in a posture inclined at the predetermined angle in a direction opposite to the second emission surface and the first emission surface with respect to the horizontal in a front view. It is characterized by being configured as a lens body.

  According to the third aspect of the present invention, firstly, it is possible to provide a lens body having a new appearance with a slant angle. That is, it is possible to provide a lens body that looks good and has a sense of unity extending in a line shape in a direction inclined by a predetermined angle with respect to the horizontal in a front view. Secondly, a predetermined light distribution pattern (in a horizontal direction and a vertical direction) is collected even though the second emission surface, which is the final emission surface, is a semi-cylindrical surface (a semi-cylindrical refractive surface). For example, it is possible to provide a lens body capable of forming a low beam light distribution pattern including a cut-off line defined by a shade at the upper edge. Thirdly, it is possible to provide a lens body in which the rotation of the predetermined light distribution pattern is suppressed despite the slant angle being given.

  The appearance with a sense of unity extending in a line shape in a direction inclined at a predetermined angle with respect to the horizontal is that the second emission surface as the final emission surface is a semi-cylindrical surface (a semi-cylindrical refraction). This is because the second emission surface extends in a direction inclined with respect to the horizontal in a front view.

  A predetermined light distribution pattern (for example, an upper end edge) condensed in the horizontal direction and the vertical direction even though the second emission surface as the final emission surface is a semi-cylindrical surface (a semi-cylindrical refractive surface) The low-beam light distribution pattern including the cut-off line defined by the shade on the surface of the first lens portion is mainly the first light exit surface (semi-cylindrical refracting surface) in the horizontal direction. This is because the second light exit surface (semi-columnar refractive surface) of the second lens portion, which is the final light exit surface of the lens body, is mainly responsible for condensing light in the vertical direction. That is, it is due to the decomposition of the light collecting function.

  Although the slant angle is given, the rotation of the predetermined light distribution pattern is suppressed because the first emission surface has a semi-cylindrical shape extending in a direction inclined by a predetermined angle with respect to the vertical in a front view. This is because the shade is arranged in a posture inclined at a predetermined angle in the opposite direction to the second emission surface and the first emission surface with respect to the horizontal in a front view.

  According to a fourth aspect of the present invention, in the third aspect of the invention, the second emission surface extends in a direction inclined with respect to the first reference axis when viewed from above, and the first emission surface. Is characterized in that its surface shape is adjusted so that the predetermined light distribution pattern collects light as a whole.

  According to invention of Claim 4, the lens body of the new appearance to which the camber angle and the slant angle were provided can be provided.

  The invention according to claim 5 is the invention according to claim 3 or 4, wherein the lens body is a lens body having a shape extending along the first reference axis, and the first lens portion is The first entrance surface, the reflection surface, the shade and the first exit surface, the second lens unit includes the second entrance surface and the second exit surface, the first entrance surface, the reflection surface, The shade, the first exit surface, the second entrance surface, and the second exit surface are arranged in this order along the first reference axis, and the first entrance surface is in the vicinity of the first entrance surface. The surface from which the light from the light source is refracted and is incident on the inside of the first lens unit, and the light from the light source incident on the inside of the first lens unit is at least in the vertical direction, And a point in the vicinity of the shade, and is opposite to the first reference axis. The reflecting surface extends forward from the lower end edge of the incident surface, and is viewed in a front view. , Being arranged in a posture inclined at the predetermined angle in a direction opposite to the second emission surface and the first emission surface with respect to the horizontal, and the shade is formed at a tip portion of the reflection surface. And

  According to the fifth aspect of the present invention, firstly, it is possible to provide a lens body in which a reflection surface by metal vapor deposition that causes a cost increase is omitted. Second, it is possible to provide a lens body capable of suppressing the melting of the lens body and the decrease in the light source output due to the heat generated by the light source.

  The reason why the reflective surface by metal vapor deposition, which causes an increase in cost, can be omitted is that light from the light source is controlled not by the reflective surface by metal vapor deposition but by refraction at the incident surface and internal reflection at the reflective surface. It is because.

  The lens body can be prevented from melting or the light source output from being reduced due to the heat generated by the light source. The incident surface is formed at the rear end of the lens body and the light source This is because it is arranged outside the lens body (that is, at a position away from the incident surface of the lens body).

  The invention according to claim 6 is the invention according to claim 2 or 5, wherein the lens body includes the first lens unit, the second lens unit, and the first lens unit and the second lens unit. The connecting portion forms a space surrounded by the first exit surface, the second entrance surface, and the connecting portion between the first lens portion and the second lens portion. It is characterized by being connected in a connected state.

  According to the invention described in claim 6, it is possible to configure a lens body in which the first lens portion and the second lens portion are coupled.

  According to a seventh aspect of the present invention, in the sixth aspect of the present invention, the lens body is a lens body that is integrally molded by injection molding using a mold, and the space has the drawing direction of the lens body. In order to form the mold in a direction opposite to the connecting portion and smoothly remove the mold, the first exit surface and the second entrance surface are each provided with a draft angle, and the second The emission surface is characterized in that its surface shape is adjusted so that light from the light source emitted from the second emission surface becomes light parallel to the first reference axis.

  According to the seventh aspect of the present invention, the first light exit surface and the second light entrance surface are set with a draft angle, but the light emitted from the light source emitted from the second light exit surface which is the final light exit surface. A lens body suitable for a vehicular lamp can be provided in which light is parallel to the first reference axis.

  The invention described in claim 8 is characterized in that, in the invention described in any one of claims 1 to 7, a lower partial region of the second emission surface is cut.

  According to the eighth aspect of the present invention, the light traveling obliquely upward can be suppressed by cutting a partial region from which the light originally directed obliquely upward with respect to the horizontal is emitted. As a result, the occurrence of glare can be suppressed and the cut-off line can be made clear.

  The invention according to claim 9 is the invention according to any one of claims 1 to 7, wherein light emitted from the partial area is lower than the second partial area of the second emission surface. The surface shape is adjusted so that the light is parallel or downward with respect to one reference axis.

  According to the ninth aspect of the present invention, by adjusting the partial region where the light originally directed upward with respect to the horizontal is emitted as described in the ninth aspect, the light traveling obliquely upward can be suppressed. Can do. As a result, the occurrence of glare can be suppressed and the cut-off line can be made clear.

  The invention according to claim 10 is the invention according to any one of claims 2 and 5 to 7, wherein the second reference axis is inclined with respect to the first reference axis in a top view. It is characterized by that.

  According to the invention described in claim 10, as a result of suppressing the Fresnel reflection loss (particularly, the Fresnel reflection loss with respect to the second emission surface provided with the camber angle), there is an effect that the light utilization efficiency is improved. it can.

  The invention described in claim 11 includes a plurality of lens bodies according to any one of claims 1 to 10 and is an integrally molded lens assembly, wherein each of the plurality of lens bodies is the first one. The two exit surfaces are arranged in a row in a state of being adjacent to each other, and are configured as a lens combination constituting a semi-columnar exit surface group extending in a line shape in a predetermined direction.

  According to the eleventh aspect of the present invention, it is possible to provide a lens assembly that looks great and has a sense of unity extending in a line in a predetermined direction.

  The invention according to claim 12 includes a light source, a first lens unit and a second lens unit arranged along a first reference axis extending in a horizontal direction, and light from the light source is emitted from the first lens unit. After being incident on the inside of the first lens portion from the first entrance surface and partially shielded by the shade of the first lens portion, it is emitted from the first exit surface of the first lens portion, and further, the second lens. A cut-off line defined by the shade at the upper end edge by being incident on the inside of the second lens portion from the second incident surface of the portion, emitted from the second exit surface of the second lens portion and irradiated forward. In the vehicular lamp provided with a lens body configured to form a predetermined light distribution pattern including the second light-emitting surface, the second emission surface is a half extending in a direction inclined with respect to the first reference axis when viewed from above. A cylindrical surface, the first exit surface , A semi-cylindrical surface extending in the vertical direction, the surface shape as the predetermined light distribution pattern is totally condensed is characterized in that it is adjusted.

  According to the twelfth aspect of the present invention, firstly, it is possible to provide a vehicular lamp including a lens body having a new appearance with a camber angle. That is, it is possible to provide a vehicular lamp that includes a lens body that looks good and has a sense of unity extending in a line shape in a direction inclined by a predetermined angle with respect to the first reference axis when viewed from above. Secondly, a predetermined light distribution pattern (in a horizontal direction and a vertical direction) is collected even though the second emission surface, which is the final emission surface, is a semi-cylindrical surface (a semi-cylindrical refractive surface). For example, it is possible to provide a vehicular lamp including a lens body capable of forming a low beam light distribution pattern including a cut-off line defined by a shade at the upper edge. Thirdly, it is possible to provide a vehicular lamp including a lens body that collects a predetermined light distribution pattern as a whole regardless of the camber angle.

  The appearance with a sense of unity extending in a line shape in a direction inclined by a predetermined angle with respect to the first reference axis is that the second emission surface as the final emission surface is a semi-cylindrical surface (semicircle) This is because the second emission surface extends in a direction inclined with respect to the first reference axis when viewed from above.

  A predetermined light distribution pattern (for example, an upper end edge) condensed in the horizontal direction and the vertical direction even though the second emission surface as the final emission surface is a semi-cylindrical surface (a semi-cylindrical refractive surface) The low-beam light distribution pattern including the cut-off line defined by the shade on the surface of the first lens portion is mainly the first light exit surface (semi-cylindrical refracting surface) in the horizontal direction. This is because the second light exit surface (semi-columnar refractive surface) of the second lens portion, which is the final light exit surface of the lens body, is mainly responsible for condensing light in the vertical direction. That is, it is due to the decomposition of the light collecting function.

  Although the camber angle is given, the predetermined light distribution pattern is entirely condensed because the first emission surface is a semi-cylindrical surface extending in the vertical direction, and the predetermined light distribution pattern This is because the surface shape is adjusted so that the light is totally condensed.

  According to a thirteenth aspect of the present invention, in the twelfth aspect of the present invention, the lens body is a lens body having a shape extending along the first reference axis, and the first lens portion is the first lens section. The incident surface, the reflection surface, the shade, and the first emission surface are included, and the second lens unit includes the second incident surface and the second emission surface, and the first incidence surface, the reflection surface, and the shade are included. The first exit surface, the second entrance surface, and the second exit surface are disposed in this order along the first reference axis, and the first entrance surface is disposed in the vicinity of the first entrance surface. The light from the light source refracted and incident on the inside of the first lens unit, and the light from the light source incident on the inside of the first lens unit at least in the vertical direction and the center of the light source and the Passing through a point near the shade and with respect to the first reference axis Condensing light toward a second reference axis inclined obliquely forward and downward, the reflective surface extends forward from a lower edge of the incident surface, and the shade is reflected by the reflective surface. It is formed in the front-end | tip part of a surface.

  According to the invention of the thirteenth aspect, firstly, it is possible to provide a vehicular lamp provided with a lens body in which a reflection surface by metal vapor deposition that causes a cost increase is omitted. Secondly, it is possible to provide a vehicular lamp including a lens body that can prevent the lens body from being melted or the light source output from being lowered due to heat generated by the light source.

  The reason why the reflective surface by metal vapor deposition, which causes an increase in cost, can be omitted is that light from the light source is controlled not by the reflective surface by metal vapor deposition but by refraction at the incident surface and internal reflection at the reflective surface. It is because.

  The lens body can be prevented from melting or the light source output from being reduced due to the heat generated by the light source. The incident surface is formed at the rear end of the lens body and the light source This is because it is arranged outside the lens body (that is, at a position away from the incident surface of the lens body).

The invention according to claim 14 includes a light source, a first lens portion and a second lens portion arranged along a first reference axis extending in a horizontal direction, and light from the light source is the first lens portion of the first lens portion. After being incident on the inside of the first lens part from one incident surface and partially shielded by the shade of the first lens part, the light is emitted from the first exit surface of the first lens part, and further, the second lens part A cut-off line defined by the shade is formed on the upper end edge by being incident on the inside of the second lens unit from the second incident surface and exiting from the second exit surface of the second lens unit and being irradiated forward. In a vehicle lamp including a lens body configured to form a predetermined light distribution pattern including:
The second emission surface is a semi-cylindrical surface extending in a direction inclined by a predetermined angle with respect to horizontal in a front view, and the first emission surface is inclined by the predetermined angle with respect to vertical in a front view. The shade is arranged in a posture inclined at the predetermined angle in a direction opposite to the second emission surface and the first emission surface with respect to the horizontal in a front view. It is characterized by being.

  According to the fourteenth aspect of the present invention, firstly, it is possible to provide a vehicular lamp including a lens body having a new appearance with a slant angle. That is, it is possible to provide a vehicular lamp that includes a lens body that looks great and has a sense of unity extending in a line shape in a direction inclined by a predetermined angle with respect to the horizontal in a front view. Secondly, a predetermined light distribution pattern (in a horizontal direction and a vertical direction) is collected even though the second emission surface, which is the final emission surface, is a semi-cylindrical surface (a semi-cylindrical refractive surface). For example, it is possible to provide a vehicular lamp including a lens body capable of forming a low beam light distribution pattern including a cut-off line defined by a shade at the upper edge. Thirdly, it is possible to provide a vehicular lamp including a lens body in which rotation of a predetermined light distribution pattern is suppressed despite a slant angle being provided.

  The appearance with a sense of unity extending in a line shape in a direction inclined at a predetermined angle with respect to the horizontal is that the second emission surface as the final emission surface is a semi-cylindrical surface (a semi-cylindrical refraction). This is because the second emission surface extends in a direction inclined with respect to the horizontal in a front view.

  A predetermined light distribution pattern (for example, an upper end edge) condensed in the horizontal direction and the vertical direction even though the second emission surface as the final emission surface is a semi-cylindrical surface (a semi-cylindrical refractive surface) The low-beam light distribution pattern including the cut-off line defined by the shade on the surface of the first lens portion is mainly the first light exit surface (semi-cylindrical refracting surface) in the horizontal direction. This is because the second light exit surface (semi-columnar refractive surface) of the second lens portion, which is the final light exit surface of the lens body, is mainly responsible for condensing light in the vertical direction. That is, it is due to the decomposition of the light collecting function.

  Although the slant angle is given, the rotation of the predetermined light distribution pattern is suppressed because the first emission surface has a semi-cylindrical shape extending in a direction inclined by a predetermined angle with respect to the vertical in a front view. This is because the shade is arranged in a posture inclined at a predetermined angle in the opposite direction to the second emission surface and the first emission surface with respect to the horizontal in a front view.

  The invention according to claim 15 is the invention according to claim 14, wherein the second emission surface extends in a direction inclined with respect to the first reference axis when viewed from above, and the first emission surface. Is characterized in that its surface shape is adjusted so that the predetermined light distribution pattern collects light as a whole.

  According to the fifteenth aspect of the present invention, it is possible to provide a vehicular lamp provided with a new-looking lens body provided with a camber angle and a slant angle.

  According to a sixteenth aspect of the present invention, in the invention according to the fourteenth or fifteenth aspect, the lens body is a lens body having a shape extending along the first reference axis, and the first lens portion is the The first entrance surface, the reflection surface, the shade and the first exit surface, the second lens unit includes the second entrance surface and the second exit surface, the first entrance surface, the reflection surface, The shade, the first exit surface, the second entrance surface, and the second exit surface are arranged in this order along the first reference axis, and the first entrance surface is in the vicinity of the first entrance surface. The light from the light source disposed in the surface is refracted and incident on the inside of the first lens unit, and the light from the light source incident on the inside of the first lens unit is at least in the vertical direction and the center of the light source. And a point in the vicinity of the shade, and the first reference The light is condensed toward the second reference axis inclined obliquely forward and downward, and the reflection surface extends forward from the lower end edge of the incident surface, and the front surface When viewed from the horizontal, it is arranged in a posture inclined by the predetermined angle in the direction opposite to the second emission surface and the first emission surface, and the shade is formed at a tip portion of the reflection surface. It is characterized by.

  According to the invention described in claim 16, firstly, it is possible to provide a vehicular lamp provided with a lens body in which a reflecting surface by metal vapor deposition that causes a cost increase is omitted. Secondly, it is possible to provide a vehicular lamp including a lens body that can prevent the lens body from being melted or the light source output from being lowered due to heat generated by the light source.

  The reason why the reflective surface by metal vapor deposition, which causes an increase in cost, can be omitted is that light from the light source is controlled not by the reflective surface by metal vapor deposition but by refraction at the incident surface and internal reflection at the reflective surface. It is because.

  The lens body can be prevented from melting or the light source output from being reduced due to the heat generated by the light source. The incident surface is formed at the rear end of the lens body and the light source This is because it is arranged outside the lens body (that is, at a position away from the incident surface of the lens body).

  The invention according to claim 17 includes a light source, a shade, and a first lens portion and a second lens portion arranged along a first reference axis extending in a horizontal direction, and light from the light source is shared by the shade. After the part is shielded, the light enters the first lens part from the first entrance surface of the first lens part, exits from the first exit surface of the first lens part, and further the first lens part of the second lens part. A predetermined line including a cut-off line defined by the shade at the upper end edge by being incident on the inside of the second lens part from the two incident surfaces, emitted from the second exit surface of the second lens part and irradiated forward; In the vehicular lamp including a lens body configured to form a light distribution pattern, the second emission surface has a semi-cylindrical shape extending in a direction inclined with respect to the first reference axis in a top view. The first exit surface is a surface. A semicylindrical surface extending in a straight direction, the surface shape as the predetermined light distribution pattern is totally condensed is characterized in that it is adjusted.

  According to the seventeenth aspect of the present invention, firstly, it is possible to provide a vehicular lamp provided with a new-looking lens body with a camber angle. That is, in a top view, a vehicular lamp (for example, a so-called direct projection type (also referred to as a direct projection type) provided with a lens body having a unity appearance extending in a line shape in a direction inclined by a predetermined angle with respect to the first reference axis. Or a projector-type vehicular lamp). Secondly, a predetermined light distribution pattern (in a horizontal direction and a vertical direction) is collected even though the second emission surface, which is the final emission surface, is a semi-cylindrical surface (a semi-cylindrical refractive surface). For example, a vehicular lamp (for example, a so-called direct projection type (also referred to as a direct-light type)) having a lens body capable of forming a low beam light distribution pattern including a cut-off line defined by a shade at the upper end edge, or A projector-type vehicular lamp) can be provided. Thirdly, a vehicular lamp (for example, a so-called direct projection type (also referred to as a direct projection type)) provided with a lens body that collects a predetermined light distribution pattern as a whole even though a camber angle is given. Alternatively, a projector-type vehicular lamp can be provided.

  The appearance with a sense of unity extending in a line shape in a direction inclined by a predetermined angle with respect to the first reference axis is that the second emission surface as the final emission surface is a semi-cylindrical surface (semicircle) This is because the second emission surface extends in a direction inclined with respect to the first reference axis when viewed from above.

  A predetermined light distribution pattern (for example, an upper end edge) condensed in the horizontal direction and the vertical direction even though the second emission surface as the final emission surface is a semi-cylindrical surface (a semi-cylindrical refractive surface) The low-beam light distribution pattern including the cut-off line defined by the shade on the surface of the first lens portion is mainly the first light exit surface (semi-cylindrical refracting surface) in the horizontal direction. This is because the second light exit surface (semi-columnar refractive surface) of the second lens portion, which is the final light exit surface of the lens body, is mainly responsible for condensing light in the vertical direction. That is, it is due to the decomposition of the light collecting function.

  Although the camber angle is given, the predetermined light distribution pattern is entirely condensed because the first emission surface is a semi-cylindrical surface extending in the vertical direction, and the predetermined light distribution pattern This is because the surface shape is adjusted so that the light is totally condensed.

  The invention according to claim 18 includes a light source, a shade, a first lens portion and a second lens portion arranged along a first reference axis extending in a horizontal direction, and light from the light source is shared by the shade. After the part is shielded, the light enters the first lens part from the first entrance surface of the first lens part, exits from the first exit surface of the first lens part, and further the first lens part of the second lens part. A predetermined line including a cut-off line defined by the shade at the upper end edge by being incident on the inside of the second lens part from the two incident surfaces, emitted from the second exit surface of the second lens part and irradiated forward; In the vehicular lamp including a lens body configured to form a light distribution pattern, the second emission surface is a semi-cylindrical surface extending in a direction inclined by a predetermined angle with respect to the horizontal in a front view. And the first exit surface is positive A semi-cylindrical surface extending in a direction inclined by the predetermined angle with respect to vertical in a view, and the shade is in a direction opposite to the second emission surface and the first emission surface with respect to the horizontal in a front view. Are arranged in a posture inclined at the predetermined angle.

  According to the invention described in claim 18, firstly, a vehicular lamp (for example, a so-called direct projection type (also referred to as a direct projection type) or a projector type having a new-looking lens body to which a slant angle is imparted). Vehicle lamp) can be provided. That is, in a front view, a vehicular lamp (for example, a so-called direct projection type (also referred to as a direct projection type) or a vehicle lamp provided with a lens body having a sense of unity extending in a line shape in a direction inclined by a predetermined angle with respect to the horizontal, or A projector-type vehicular lamp) can be provided. Secondly, a predetermined light distribution pattern (in a horizontal direction and a vertical direction) is collected even though the second emission surface, which is the final emission surface, is a semi-cylindrical surface (a semi-cylindrical refractive surface). For example, a vehicular lamp (for example, a so-called direct projection type (also referred to as a direct-light type)) having a lens body capable of forming a low beam light distribution pattern including a cut-off line defined by a shade at the upper end edge, or A projector-type vehicular lamp) can be provided. Thirdly, a vehicular lamp (for example, a so-called direct projection type (also referred to as a direct-light type)) having a lens body in which rotation of a predetermined light distribution pattern is suppressed even though a slant angle is given or A projector-type vehicular lamp) can be provided.

  The appearance with a sense of unity extending in a line shape in a direction inclined at a predetermined angle with respect to the horizontal is that the second emission surface as the final emission surface is a semi-cylindrical surface (a semi-cylindrical refraction). This is because the second emission surface extends in a direction inclined with respect to the horizontal in a front view.

  A predetermined light distribution pattern (for example, an upper end edge) condensed in the horizontal direction and the vertical direction even though the second emission surface as the final emission surface is a semi-cylindrical surface (a semi-cylindrical refractive surface) The low-beam light distribution pattern including the cut-off line defined by the shade on the surface of the first lens portion is mainly the first light exit surface (semi-cylindrical refracting surface) in the horizontal direction. This is because the second light exit surface (semi-columnar refractive surface) of the second lens portion, which is the final light exit surface of the lens body, is mainly responsible for condensing light in the vertical direction. That is, it is due to the decomposition of the light collecting function.

  Although the slant angle is given, the rotation of the predetermined light distribution pattern is suppressed because the first emission surface has a semi-cylindrical shape extending in a direction inclined by a predetermined angle with respect to the vertical in a front view. This is because the shade is arranged in a posture inclined at a predetermined angle in the opposite direction to the second emission surface and the first emission surface with respect to the horizontal in a front view.

  The invention according to claim 19 is the invention according to claim 18, wherein the second emission surface extends in a direction inclined with respect to the first reference axis in a top view, and the first emission surface. Is characterized in that its surface shape is adjusted so that the predetermined light distribution pattern collects light as a whole.

  According to the nineteenth aspect of the present invention, a vehicular lamp (for example, a so-called direct projection type (also referred to as a direct projection type) or a projector type equipped with a new-looking lens body provided with a camber angle and a slant angle is provided. Vehicle lamps) can be provided.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the lens body (lens coupling | bonding body) of the unity appearance with a sense of unity extended in a line shape in a predetermined direction, and a vehicle lamp provided with the same.

It is a longitudinal section of vehicular lamp 10 which is a 1st embodiment of the present invention. (A) The perspective view of the lens body 12 seen from the front, (b) The perspective view of the lens body 12 seen from the back. (A) Top view of lens body 12, (b) Bottom view, (c) Side view. (A) The figure showing a mode that the light from the light source 14 (precisely the reference point F) injects into the entrance plane 12a, (b) The light (direct light RayA) from the light source 14 which injected into the lens body 12 inside. It is a figure showing a mode that it condenses. It is an example (transverse sectional view) of the incident surface 12a. It is another example (transverse cross section) of the entrance plane 12a. (A) (b) It is a figure for demonstrating the distance between the entrance plane 12a and the light source 14. FIG. It is a figure for demonstrating the role of the shade 12c. (A) Schematic diagram of the shade 12c viewed from the position of the light source 14, (b) An enlarged perspective view enlarging the reflecting surface 12b (including the shade 12c) shown in FIG. 2 (a), (c) FIG. 2 (a). It is a top view of the reflective surface 12b (including shade 12c) shown in FIG. (A)-(c) It is the modification (side view) of the shade 12c. (A) An example of a low-beam light distribution pattern P1 formed on a virtual vertical screen (disposed approximately 25 m ahead from the front of the vehicle) by the vehicular lamp 10 according to the first embodiment, (B) An example of the light distribution pattern P2 for low beam, (c) An example of the light distribution pattern P3 for low beam. It is a figure for demonstrating light source image I _Cs1 -I _Cs4 by the light from the light source 14 in each cross section _{Cs1- Cs4} . (A) When reflecting surface 12b is arranged in the horizontal direction, a diagram depicting a situation in which reflected light RayB ′ internally reflected by reflecting surface 12b travels in a direction not incident on exit surface 12d, (b) reflecting surface 12b FIG. 6 is a diagram illustrating a state in which the reflected light RayB internally reflected by the reflecting surface 12b travels in a direction to enter the exit surface 12d when it is arranged to be inclined with respect to the first reference axis AX1. (A) When the reflective surface 12b is arranged in the horizontal direction, a diagram depicting a state in which the reflected light RayB ′ traveling in the direction not incident on the exit surface 12d can be captured by extending the reflective surface 12b upward; b) When the reflecting surface 12b is disposed so as to be inclined with respect to the first reference axis AX1, more light (reflected light RayB internally reflected by the reflecting surface 12b) is captured without extending the reflecting surface 12b upward. FIG. (A) The second reference axis AX2 is arranged in the horizontal direction, and the light from the light source 14 incident on the lens body 12 is condensed toward the second reference axis AX2 toward the shade 12c at least in the vertical direction. In this case, a diagram depicting a state in which much of the light from the light source 14 incident on the inside of the lens body 12 is shielded by the shade 12c, and (b) the second reference axis AX2 is disposed so as to be inclined with respect to the first reference axis AX1. When the light from the light source 14 incident on the inside of the lens body 12 is condensed toward the second reference axis AX2 toward the shade 12c at least in the vertical direction, the light captured by the emission surface 12d (the inner surface of the reflection surface 12b) It is the figure which showed a mode that reflected reflected light RayB) increased. It is a perspective view of 10 A of vehicle lamps which are 2nd Embodiment of this invention. (A) The longitudinal cross-sectional view of 10 A of vehicle lamps, (b) It is a figure showing a mode that the light from the light source 14 advances the inside of the lens body 12A. It is a top view showing a mode that a plurality of vehicular lamps 10 (a plurality of lens bodies 12) of a 1st embodiment are arranged in a line. (A) Front view showing a state in which a plurality of vehicular lamps 10A (a plurality of lens bodies 12A) of the second embodiment are arranged in a line in the horizontal direction, (b) a top view. (A) An example of a low beam light distribution pattern P1a formed on a virtual vertical screen (disposed approximately 25 m ahead from the front of the vehicle) facing the front of the vehicle by the vehicle lamp 10A of the second embodiment, (B) An example of the low beam light distribution pattern P1b, (c) an example of the low beam light distribution pattern P1c. (A) Top view of lens body 12A of 2nd Embodiment, (b) Side view, (c) Bottom view. It is an example (cross-sectional view) of the 1st entrance plane 12a. It is a perspective view for demonstrating lens body 12A (1st output surface 12A1a, 2nd entrance surface 12A2a, and 2nd output surface 12A2b) of 2nd Embodiment. It is a figure for demonstrating each normal line of 1st output surface 12A1a, 2nd entrance surface 12A2a, and 2nd output surface 12A2b. It is a figure explaining lens body 12B which is the 1st modification of lens body 12A of a 2nd embodiment. It is a perspective view for demonstrating lens body 12C (1st output surface 12A1a, 2nd entrance surface 12A2a, and 2nd output surface 12A2b) which is the 2nd modification of lens body 12A of 2nd Embodiment. It is a front view showing a mode that a plurality of vehicular lamps 10C (a plurality of lens bodies 12C) are arranged in a line in the vertical direction. It is the schematic of the direct projection type vehicle lamp 20 to which the idea of "disassembling a condensing function" is applied. This is an example of a high beam light distribution pattern P _Hi formed on a virtual vertical screen (disposed approximately 25 m forward from the front of the vehicle) facing the front of the vehicle. It is the schematic of the projector type vehicle lamp 30 to which the idea of "disassembling a condensing function" is applied. (A) Side view (only main optical surface) of vehicular lamp 10D (fifth embodiment) provided with a camber angle, (b) Top view (only main optical surface), (c) Formed by vehicular lamp 10D (D) Side view (only main optical surface) of vehicular lamp 10A of the second embodiment in which no camber angle is given, (e) Top view (only main optical surface) (F) It is an example of the light distribution pattern for low beams formed by 10 A of vehicle lamps of 2nd Embodiment. It is a top view (only main optical surface) for demonstrating the problem at the time of providing the camber angle. It is a figure for demonstrating the problem which appears in the light distribution pattern for low beams when a camber angle is provided. (A) Cross-sectional view at position B shown in FIG. 32 (only main optical surface), (b) Cross-sectional view at position C shown in FIG. 32 (only main optical surface). (A) It is a perspective view (only main optical surface) of vehicular lamp 10D of this embodiment, (b) It is a perspective view (only main optical surface) of vehicular lamp 10A of 2nd Embodiment. It is a front view of vehicle lamp 10E (6th Embodiment) to which the slant angle | corner was provided. (A) The figure for demonstrating the problem which appears in the light distribution pattern for low beams when a slant angle | corner is provided, (b) It is the figure which represented typically Fig.37 (a). (A) The figure for demonstrating that the problem (rotation) which appears in the light distribution pattern for low beams was suppressed, (b) The figure which represented typically Fig.38 (a). (A) Side view (main optical surface only) of vehicular lamp 10F (seventh embodiment) provided with camber angle and slant angle, (b) Top view (only main optical surface), (c) Vehicular lamp It is an example of the light distribution pattern for low beams formed by 10F. (A) Side view (only main optical surface) of vehicular lamp 10G of the first comparative example, (b) Top view (only main optical surface), (c) Example of light distribution pattern formed by vehicular lamp 10G It is. (A) Side view of vehicle lamp 10H of second comparative example (only main optical surface), (b) Top view (only main optical surface), (c) Example of light distribution pattern formed by vehicle lamp 10H It is. (A) An example of a low beam light distribution pattern formed by the vehicular lamp 10D of the fifth embodiment (also the vehicular lamp 10F of the seventh embodiment) when the camber angle θ1 is 30 °, (b) It is an example of the low beam light distribution pattern formed by the vehicular lamp 10D of the fifth embodiment (the same applies to the vehicular lamp 10F of the seventh embodiment) when the camber angle θ1 is 45 °. It is sectional drawing (only main optical surfaces) of 10 A of vehicle lamps of 2nd Embodiment. (A) An example in which, in the second emission surface 12A2b, the lower partial region 12A2b2 from which light upward to the horizontal is emitted is physically cut to leave the upper region 12A2b1, (b) the second emission surface The surface shape (for example, curvature) of the partial region 12A2b2 is set so that the light Ray2 from the light source 14 emitted from the lower partial region 12A2b2 of 12A2b becomes parallel or downward with respect to the first reference axis AX. In this example, the second emission surface 12A2b is adjusted and divided into an upper region 12A2b1 and a lower region 12A2b2. The second reference axis AX2 is a top view (only the main optical surface) of the vehicular lamp 10I that is inclined with respect to the first reference axis AX1 when viewed from above. It is a perspective view of vehicle lamp 10J (lens body 12J). (A) Top view of vehicle lamp 10J (lens body 12J), (b) Front view, (c) Side view. (A) Example of low beam light distribution pattern P _LO (synthetic light distribution pattern) formed by the vehicular lamp 10J (lens body 12J), (b) to (d) Each part of the distributed light constituting FIG. 48 (a) This is an example of patterns P _SPOT , P _MID , and P _WIDE . (A) Side view of first optical system (only main optical surface), (b) Top view of second optical system (only main optical surface), (c) Side view of third optical system (only main optical surface) It is. (A) Front view of first rear end portion 12A1aa of first lens portion 12A1, (b) AA sectional view (schematic diagram) in FIG. 50 (a), (c) BB in FIG. 50 (a). It is sectional drawing (schematic diagram). It is a front view (photograph) of the vehicular lamp 10J (lens body 12J) showing a state where multipoint light emission is performed. (A) Side view of the vehicular lamp 10E (lens body 12A) of the sixth embodiment (only main optical surface from which the first emission surface 12A1a is omitted), (b) Top view (main from which the first emission surface 12A1a is omitted) (D) optical surface only), (d) side view (only main optical surface with the first emission surface 12A1a omitted), and (e) top view (only main optical surface with the first emission surface 12A1a omitted). FIG. 52A is a top view in which the first emission surface 12A1a is added to FIG. 52B, and FIG. 52B is a top view in which the first emission surface 12A1a is added to FIG. (A) (b) It is an example of adjustment of the surface shape of a pair of left and right entrance surfaces 42a and 42b and / or a pair of left and right side surfaces 44a and 44b constituting the second optical system. (A) (b) It is an example of adjustment of the surface shape of the upper entrance surface 42c which comprises a 3rd optical system. It is a longitudinal cross-sectional view of the vehicular lamp 200 described in Patent Document 1. It is a top view showing a mode that a plurality of vehicular lamps 200 (a plurality of lens bodies 220) are arranged in a line.

  Hereinafter, the vehicle lamp which is 1st Embodiment of this invention is demonstrated, referring drawings.

  FIG. 1 is a longitudinal sectional view of a vehicular lamp 10 according to a first embodiment of the present invention.

  As shown in FIG. 1, the vehicular lamp 10 of the present embodiment includes a lens body 12, a light source 14 disposed in the vicinity of the incident surface 12 a of the lens body 12, and the like, and a virtual vertical screen (vehicle) It is configured as a vehicle headlamp that forms a low beam light distribution pattern P1 including cut-off lines CL1 to CL3 on the upper edge shown in FIG. ing.

  2A is a perspective view of the lens body 12 viewed from the front, FIG. 2B is a perspective view of the lens body 12 viewed from the rear, FIG. 3A is a top view of the lens body 12, and FIG. FIG. 3B is a bottom view, and FIG. 3C is a side view.

  As shown in FIG. 1, the lens body 12 is a lens body having a shape extending along a first reference axis AX1 extending in the horizontal direction, and includes an entrance surface 12a, a reflection surface 12b, a shade 12c, an exit surface 12d, and an entrance surface 12a. The reference point F in the optical design arranged in the vicinity is included. The entrance surface 12a, the reflection surface 12b, the shade 12c, and the exit surface 12d are arranged in this order along the first reference axis AX1. The material of the lens body 12 may be polycarbonate, other transparent resin such as acrylic, or glass.

  A dotted line with an arrow at the tip in FIG. 1 represents an optical path of light from the light source 14 (more precisely, the reference point F) that has entered the lens body 12.

The main functions of the lens body 12 are firstly to capture the light from the light source 14 into the lens body 12, and secondly to proceed toward the exit surface 12d of the light captured into the lens body 12. The light intensity distribution (light source image) formed in the vicinity of the focal point F _12d of the exit surface 12d (lens unit) is inverted and projected by the direct light RayA and the reflected light RayB that is internally reflected by the reflecting surface 12b, and is cut off on the upper edge. Forming a light distribution pattern for low beam including

  4A shows a state in which light from the light source 14 (precisely, the reference point F) enters the incident surface 12a, and FIG. 4B shows light from the light source 14 that has entered the lens body 12. FIG. It is a figure showing a mode that (direct light RayA) condenses.

  The incident surface 12a is formed at the rear end of the lens body 12, and is light from the light source 14 (precisely, the reference point F in optical design) disposed in the vicinity of the incident surface 12a (see FIG. 4A). ) Is refracted and incident on the inside of the lens body 12 (for example, a free-form curved surface convex toward the light source 14), and light (direct light RayA) incident on the lens body 12 is at least in the vertical direction. , The surface shape is configured so as to converge toward the second reference axis AX2 toward the shade 12c (see FIG. 4B). The second reference axis AX2 passes through the center of the light source 14 (precisely, the reference point F) and a point near the shade 12c, and is inclined obliquely forward and downward with respect to the first reference axis AX1 ( (See FIG. 1).

The light source 14 includes, for example, a semiconductor substrate (not shown) such as a metal substrate (not shown) and a white LED light source (or white LD light source) mounted on the surface of the substrate. The number of semiconductor light emitting elements may be one or more. The light source 14 may be a light source other than a semiconductor light emitting element such as a white LED light source (or a white LD light source). The light source 14 is in the vicinity of the incident surface 12a of the lens body 12 in a posture in which the light emitting surface (not shown) is directed obliquely forward and downward, that is, in a posture in which the optical axis AX ₁₄ of the light source 14 coincides with the second reference axis AX2. (Near reference point F). The light source 14 is configured so that the optical axis AX ₁₄ of the light source 14 does not coincide with the second reference axis AX 2 (for example, the attitude in which the optical axis AX ₁₄ of the light source 14 is disposed in the horizontal direction). You may arrange | position in the entrance plane 12a vicinity (reference point F vicinity).

When the light source 14 is a semiconductor light emitting element (for example, a white LED light source), the directivity characteristic of light emitted from the light source 14 (light emitting surface) is Lambertian and can be expressed as I (θ) = I0 × cos θ. This represents the spread of light emitted by the light source 14. However, I (θ) represents the light intensity from the optical axis AX ₁₄ of the angle theta inclined direction of the light source 14, I0 represents the intensity on the optical axis AX _14. In the light source 14, the luminous intensity on the optical axis AX ₁₄ (θ = 0) is maximized.

  FIG. 5 is an example (transverse sectional view) of the incident surface 12a, and FIG. 6 is another example (transverse sectional view) of the incident surface 12a.

  As shown in FIG. 5, in the horizontal direction, the incident surface 12 a condenses light from the light source 14 that has entered the lens body 12 (direct light RayA) toward the first reference axis AX1 toward the shade 12 c. Thus, the surface shape is configured. In addition, as shown in FIG. 6, the incident surface 12a is such that the light from the light source 14 (direct light RayA) incident on the inside of the lens body 12 is parallel to the reference axis AX1 in the horizontal direction. The surface shape may be configured.

  The degree of horizontal diffusion of the low beam light distribution pattern can be freely adjusted by adjusting the shape of the incident surface 12a (for example, the curvature of the incident surface 12a in the horizontal direction).

  FIG. 7A and FIG. 7B are diagrams for explaining the distance between the incident surface 12 a and the light source 14.

Compared with the case where the distance between the incident surface 12a and the light source 14 is increased (see FIG. 7A) by shortening the distance between the incident surface 12a and the light source 14 (see FIG. 7B). The light source image becomes smaller. As a result, the maximum luminous intensity of the luminous intensity distribution (and the low beam light distribution pattern) formed in the vicinity of the focal point F _{12d of} the emission surface 12d (lens portion) can be increased.

  Further, by shortening the distance between the incident surface 12a and the light source 14 (see FIG. 7B), the distance between the incident surface 12a and the light source 14 is increased (see FIG. 7A). As compared with the above, light from the light source 14 taken into the lens body 12 increases (β> α). As a result, a highly efficient lens body is obtained.

  The reflecting surface 12b is a planar reflecting surface extending in the horizontal direction from the lower end edge of the incident surface 12a toward the front. The reflective surface 12b is a reflective surface that totally reflects the light incident on the reflective surface 12b out of the light from the light source 14 that has entered the lens body 12, and metal deposition is not used. Of the light from the light source 14 that has entered the lens body 12, the light that has entered the reflecting surface 12 b is internally reflected by the reflecting surface 12 b and travels toward the exit surface 12 d, and is refracted by the exit surface 12 d and travels toward the road surface. That is, the reflected light RayB internally reflected by the reflecting surface 12b is folded back at the cutoff line and superimposed on the light distribution pattern below the cutoff line. Thereby, a cut-off line is formed at the upper edge of the low beam light distribution pattern.

  The reflective surface 12b may be a planar reflective surface that is inclined obliquely forward and downward with respect to the first reference axis AX1 from the lower end edge of the incident surface 12a (see FIG. 14B). The advantage of arranging the reflecting surface 12b so as to be inclined with respect to the first reference axis AX1 will be described later.

  A shade 12c extending in the left-right direction is formed at the tip of the reflecting surface 12b.

  FIG. 8 is a diagram for explaining the role of the shade 12c.

As shown in FIG. 8, the main role of the shade 12c is to block part of the light from the light source 14 incident on the inside of the lens body 12, and at the lower end edge near the focal point F _{12d of the} exit surface 12d (lens portion). Forming a light intensity distribution (light source image) including a side corresponding to the cutoff line defined by the shade 12c.

  FIG. 9A is a schematic view of the shade 12c viewed from the position of the light source 14, and FIG. 9B is an enlarged perspective view of the reflecting surface 12b (including the shade 12c) shown in FIG. FIG. 3C is a top view of the reflecting surface 12b (including the shade 12c) shown in FIG.

  As shown in FIGS. 2A and 9A to 9C, the shade 12c includes a side e1 corresponding to the left horizontal cutoff line, a side e2 corresponding to the right horizontal cutoff line, and the left horizontal. An edge e3 corresponding to the oblique cut-off line connecting the cut-off line and the right horizontal cut-off line is included.

  The reflective surface 12b is a first reflective region 12b1 between the lower edge of the incident surface 12a and the side e1 corresponding to the left horizontal cutoff line, and between the lower edge of the incident surface 12a and the side e2 corresponding to the right horizontal cutoff line. The second reflection area 12b2 and the third reflection area 12b3 between the first reflection area 12b1 and the second reflection area 12b2.

  The first reflection region 12b1 is gradually curved upward as it approaches the side e1 corresponding to the left horizontal cut-off line from the lower end edge of the incident surface 12a, while the second reflection region 12b2 is lower end edge of the incident surface 12a. Extends horizontally from the front to the front.

  As a result, the side e1 corresponding to the left horizontal cut-off line is arranged at a level higher than the side e2 corresponding to the right horizontal cut-off line in the vertical direction (in the case of right-hand traffic). Of course, the side e1 corresponding to the left horizontal cutoff line may be arranged at a position one step lower than the side e2 corresponding to the right horizontal cutoff line in the vertical direction (in the case of left-hand traffic).

  The shade 12c has a groove corresponding to the left horizontal cut-off line, a groove corresponding to the right horizontal cut-off line, and an oblique cut-off line connecting the left horizontal cut-off line and the right horizontal cut-off line at the tip of the reflecting surface 12b. It can also form by forming the groove part containing the groove part corresponding to.

  10 (a) to 10 (c) show a modified example (side view) of the shade 12c. The shade 12c may extend upward from the tip of the reflecting surface 12b in a side view (see FIG. 10A), or may extend obliquely upward in the front direction (FIG. 10 ( b)), and may be curved and extended forward and obliquely upward (see FIG. 10C). The shade 12c is not limited to these, and may have any shape as long as a part of the light from the light source 14 entering the lens body 12 is shielded so as not to travel toward the exit surface 12d. In addition, you may use the light-shielded light for another light distribution and light guide.

As shown in FIG. 1, the exit surface 12 d is internally reflected by the direct light RayA that travels toward the exit surface 12 d and the reflection surface 12 b of the light from the light source 14 that has entered the lens body 12. A lens in which the focal point F _12d is set in the vicinity of the shade 12c (for example, near the center in the left-right direction of the shade 12c) on the surface from which the reflected light RayB traveling toward 12d is emitted (for example, a convex surface convex forward). It is configured as a part. Exit surface 12d is the direct light RayA and reflected light RayB travels toward to the exit surface 12d, the light intensity distribution formed on the focal point F _12d near the exit face 12d (lens unit) a (light source image) inverted projected to Then, a low beam light distribution pattern including a cut-off line at the upper end edge is formed.

Note that by increasing the distance (focal length) between the shade 12c and the exit surface 12d, the light source image becomes smaller than when the distance (focal length) between the shade 12c and the exit surface 12d is shortened. . As a result, the maximum luminous intensity of the luminous intensity distribution (and the low beam light distribution pattern) formed in the vicinity of the focal point F _{12d of} the emission surface 12d (lens portion) can be increased.

  In addition, by shortening the distance between the exit surface 12d and the light source 14 (or shade 12c), the exit surface 12d is longer than when the distance between the exit surface 12d and the light source 14 (or shade 12c) is increased. The direct light RayA and the reflected light B that are taken in are increased. As a result, efficiency increases.

  The degree of diffusion of the low beam light distribution pattern in the horizontal direction and the vertical direction can be freely adjusted by adjusting the surface shape of the exit surface 12d.

  A surface that connects the leading edge of the reflecting surface 12b and the lower edge of the emitting surface 12d is an inclined surface that extends obliquely forward and downward from the leading edge of the reflecting surface 12b. In addition, the surface which connects the front-end edge of the reflective surface 12b and the lower end edge of the output surface 12d is not limited to this, and any surface that does not block the direct light RayA and the reflected light RayB traveling toward the output surface 12d. It may be a surface. Similarly, the surface connecting the upper end edge of the incident surface 12a and the upper end edge of the exit surface 12d is a planar surface extending in the horizontal direction between the upper end edge of the entrance surface 12a and the upper end edge of the exit surface 12d. Has been. The surface connecting the upper end edge of the incident surface 12a and the upper end edge of the output surface 12d is not limited to this, and any surface that does not block the direct light RayA and the reflected light RayB traveling toward the output surface 12d. It may be a surface.

  In the lens body 12 configured as described above, the light that has entered the lens body 12 from the incident surface 12a is condensed toward the second reference axis AX2 toward the shade 12c in the vertical direction as shown in FIG. For example, the light is condensed at the center of the shade 12c). And when the surface shape of the incident surface 12a is comprised as shown in FIG. 5, the light which injected into the lens body inside the incident surface 12a is toward the shade 12c regarding a horizontal direction, as shown in FIG. The light is condensed toward the first reference axis AX1 (for example, condensed at the center of the shade 12c).

As described above, the direct light RayA collected in the vertical direction and the horizontal direction and the reflected light RayB internally reflected by the reflecting surface 12b travel toward the emitting surface 12d and are emitted from the emitting surface 12d. At that time, the side corresponding to the cut-off line defined by the shade 12c is formed at the lower end edge in the vicinity of the focal point F _12d of the exit surface 12d (lens portion) by the direct light RayA and the reflected light RayB traveling toward the exit surface 12d. A luminous intensity distribution (light source image) is formed. Then, the exit surface 12d reversely projects this luminous intensity distribution to form a low beam light distribution pattern P1 including a cut-off line at the upper edge shown in FIG. 11A on the virtual vertical screen.

The low-beam light distribution pattern P1 has a relatively high central luminous intensity and excellent distant visibility. This is because the light source 14 is disposed in the vicinity of the incident surface 12a (in the vicinity of the reference point F) of the lens body 12 in such a posture that the optical axis AX ₁₄ of the light source 14 coincides with the second reference axis AX2. intensity (luminosity) is high light on axis AX ₁₄ of the light (direct light) is condensed on the second reference axis AX2 closer toward the shade 12c (e.g., condensed at the center of the shade 12c) be due to is there.

  In addition, by adjusting the surface shape (for example, curvature) of the entrance surface 12a and / or the exit surface 12d, as shown in FIG. 11B, a low beam light distribution pattern P2 diffused in the horizontal direction is formed. You can also.

  Further, by increasing the inclination of the second reference axis AX2 (see the angle θ shown in FIG. 1) with respect to the first reference axis AX1, the lower edge of the low beam light distribution patterns P1, P2 can be extended downward.

  On the other hand, when the surface shape of the incident surface 12a is configured as shown in FIG. 6, the light that has entered the lens body 12 from the incident surface 12a has a first reference axis in the horizontal direction as shown in FIG. The light is parallel to AX1.

As described above, the direct light RayA collected in the vertical direction and parallel to the horizontal direction and the reflected light RayB internally reflected by the reflection surface 12b travel toward the emission surface 12d and are emitted from the emission surface 12d. . At that time, the direct light RayA and reflected light RayB traveling toward the exit surface 12d, the focal F _12d near the exit face 12d (lens unit), corresponding to the cutoff line CL1~CL3 defined in the lower edge by the shade 12c A luminous intensity distribution (light source image) including a side to be formed is formed. The exit surface 12d reversely projects this luminous intensity distribution to form a low beam light distribution pattern P3 including cut-off lines CL1 to CL3 at the upper edge shown in FIG. 11C on the virtual vertical screen. The low beam light distribution pattern P3 shown in FIG. 11C is more diffused in the horizontal direction than the low beam light distribution pattern P1 shown in FIG.

  Next, the relationship between the light source image by the light from the light source 14 that has entered the lens body 12 and the low beam light distribution pattern will be described.

  FIG. 12 is a diagram for explaining a light source image by light from the light source 14 in each of the cross sections Cs1 to Cs3.

As shown in FIG. 12, the external shape of the cross section Cs1, the light source image I _Cs1 in Cs2, I _Cs2 becomes the same as the outer shape of the light source (larger as the light source image in the external shape and similar type of light source 14).

On the other hand, the outer shape of the light source image I _Cs3 in section Cs3 after passing through the reflecting surface 12b and the shade 12c includes an edge e1, e2, e3 corresponding to cutoff line CL1~CL3 defined in the lower edge by the shade 12c It will be a thing. This light source image I _Cs3 is inverted by the action of the exit surface 12d (lens portion) and includes edges e1, e2, e3 corresponding to the cut-off lines CL1 to CL3 defined by the shade 12c at the upper end edge.

  The light distribution patterns P1 to P3 for low beams shown in FIGS. 11A to 11C include light sources including sides e1, e2, and e3 corresponding to the cut-off lines CL1 to CL3 defined by the shade 12c at the upper end edge. Since it is formed on the basis of an image, clear cut-off lines CL1, CL2, and CL3 are included at the upper edge.

  Next, the advantage of disposing the reflecting surface 12b with respect to the first reference axis AX1 will be described in comparison with the case where the reflecting surface 12b is disposed in the horizontal direction.

  The first advantage is that stray light can be reduced and efficiency can be increased as compared with the case where the reflecting surface 12b is arranged in the horizontal direction.

  That is, as shown in FIG. 13A, when the reflecting surface 12b is arranged in the horizontal direction, the reflected light RayB ′ internally reflected by the reflecting surface 12b travels in the direction not entering the exit surface 12d. It becomes. As a result, efficiency is reduced.

  On the other hand, as shown in FIG. 13B, when the reflecting surface 12b is inclined with respect to the first reference axis AX1, the reflection is reflected from the reflecting surface 12b and proceeds toward the emitting surface 12d. The light RayB increases, and the light captured by the emission surface 12d (the reflected light reflected from the inner surface by the reflection surface 12b) increases. As a result, the stray light can be reduced and the efficiency can be increased as compared with the case where the reflecting surface 12b is arranged in the horizontal direction.

  In the simulation performed by the inventors of the present application, the efficiency increases by 33.8% when the reflecting surface 12b is tilted by 5 ° with respect to the first reference axis AX1, and the efficiency increases when the reflecting surface 12b is tilted by 10 °. Increased by 60%.

  The second advantage is that the lens body 12 can be reduced in size as compared with the case where the reflecting surface 12b is arranged in the horizontal direction.

  That is, as shown in FIG. 13A, when the reflecting surface 12b is arranged in the horizontal direction, the reflected light RayB ′ internally reflected by the reflecting surface 12b travels in the direction not entering the exit surface 12d. It becomes. The exit surface 12d can capture stray light RayB 'by extending it upward as shown in FIG. 14 (a), but the exit surface 12d becomes larger as it extends upward.

  On the other hand, as shown in FIG. 14B, when the reflecting surface 12b is inclined with respect to the first reference axis AX1, the exit surface 12d has more light (without extending it upward). The reflected light RayB) internally reflected by the reflecting surface 12b can be taken in. As a result, as compared with the case where the reflecting surface 12b is arranged in the horizontal direction, it is possible to reduce the size of the exit surface 12d (and thus the lens body 12).

  In the simulation performed by the inventors of the present application, when the reflecting surface 12b is inclined at 5 ° with respect to the first reference axis AX1, the height A (light emitted from the emitting surface 12d) shown in FIG. 14 (a) is reduced by 8% compared to the case shown in FIG. 14 (a), and the height A shown in FIG. 14 (b) is shown in FIG. Compared to the case shown, it decreased by 18.1%.

  Next, the second reference axis AX2 is arranged so as to be inclined with respect to the first reference axis AX1, and the light from the light source 14 incident on the lens body 12 enters the second reference axis toward the shade 12c at least in the vertical direction. Regarding the advantage of condensing near AX2, the second reference axis AX2 is arranged in the horizontal direction, and the light from the light source 14 incident on the inside of the lens body 12 is directed to the shade 12c at least in the vertical direction. The description will be made in comparison with the case where light is condensed near the axis AX2.

  The advantage is that the second reference axis AX2 is arranged in the horizontal direction, and the light from the light source 14 incident on the lens body 12 is condensed toward the second reference axis AX2 toward the shade 12c at least in the vertical direction. Compared to the case, the stray light can be reduced and the efficiency can be increased.

  That is, as shown in FIG. 15A, the second reference axis AX2 is arranged in the horizontal direction, and the light from the light source 14 incident on the lens body 12 is secondly directed toward the shade 12c at least in the vertical direction. When the light is condensed near the reference axis AX2, much of the light from the light source 14 that has entered the lens body 12 is blocked by the shade 12c. As a result, efficiency is greatly reduced. Further, in FIG. 15A, assuming that a reflecting surface corresponding to the reflecting surface 12b is added, the reflected light that is internally reflected by the reflecting surface becomes stray light that travels in a direction not incident on the exit surface 12d.

  On the other hand, as shown in FIG. 15B, the second reference axis AX2 is inclined with respect to the first reference axis AX1, and the light from the light source 14 incident on the lens body 12 is at least vertically. Regarding the direction, when the light is condensed toward the second reference axis AX2 toward the shade 12c, the light captured by the exit surface 12d (the reflected light RayB internally reflected by the reflective surface 12b) increases. As a result, the second reference axis AX2 is arranged in the horizontal direction, and the light from the light source 14 incident on the lens body 12 is condensed toward the second reference axis AX2 toward the shade 12c at least in the vertical direction. Compared to the above, it is possible to reduce stray light and achieve high efficiency.

  As described above, according to the present embodiment, firstly, it is possible to provide the lens body 12 and the vehicle lamp 10 using the lens body 12 in which the reflective surface by metal vapor deposition that causes a cost increase is omitted. Second, the lens body 12 that can prevent the lens body 12 from melting or the output of the light source 14 from being lowered due to the heat generated in the light source 14 and a vehicle lamp 10 using the lens body 12 are provided. can do.

  The reason why the reflective surface by metal vapor deposition, which causes an increase in cost, can be omitted is that the light from the light source 14 is not reflected by the metal vapor deposition, but by refraction at the incident surface 12a and internal reflection at the reflective surface 12b. It is by being controlled.

  The reason why the lens body 12 can be prevented from melting or the output of the light source 14 from being lowered due to the heat generated by the light source 14 is that the incident surface 12a is formed at the rear end of the lens body 12. This is because the light source 14 is disposed outside the lens body 12 (that is, at a position separated from the incident surface 12a of the lens body 12).

  Next, a vehicular lamp that is a second embodiment of the present invention will be described with reference to the drawings.

  16 is a perspective view of a vehicular lamp 10A according to a second embodiment of the present invention, FIG. 17A is a longitudinal sectional view, and FIG. 17B is a state in which light from the light source 14 travels inside the lens body 12A. FIG.

  When comparing the vehicular lamp 10A of the present embodiment with the vehicular lamp 10 of the first embodiment, they are mainly different in the following points.

  First, in the vehicular lamp 10 according to the first embodiment, the light exit surface 12d, which is the final light exit surface of the lens body 12, is mainly responsible for horizontal light collection and vertical light collection. On the other hand, in the vehicular lamp 10A of the present embodiment, the first light exit surface 12A1a of the first lens portion 12A1 is mainly responsible for the horizontal light collection, and the vertical light collection is mainly the lens body 12A. The second emission surface 12A2b of the second lens portion 12A2, which is the final emission surface, is in charge. That is, the vehicle lamp 10A of the present embodiment adopts the concept of “decomposing the light collecting function”.

  Secondly, in the vehicular lamp 10 according to the first embodiment, the light exit surface 12d, which is the final light exit surface of the lens body 12, is hemispherical in order to perform horizontal light collection and vertical light collection. (Refer to FIG. 2 (a)), the vehicular lamp 10A according to the present embodiment is in charge of condensing in the horizontal direction. The first light exit surface 12A1a of the lens portion 12A1 is configured as a semi-cylindrical surface (semi-cylindrical refractive surface) extending in the vertical direction (see FIG. 23), and is in charge of condensing light in the vertical direction. The second exit surface 12A2b of the second lens portion 12A2, which is the final exit surface of 12A, is configured as a semi-cylindrical surface (semi-cylindrical refractive surface) extending in the horizontal direction (see FIG. 23).

  Third, in the vehicular lamp 10 according to the first embodiment, the exit surface 12d, which is the final exit surface of the lens body 12, is configured as a hemispherical surface (semi-columnar refractive surface). Even if a plurality of vehicle lamps 10 (a plurality of lens bodies 12) are arranged in a line (see FIG. 18), the appearance of the dots is continuous, and the vehicle lamp has a sense of unity that extends in a line in a predetermined direction. On the other hand, in the vehicular lamp 10A of the present embodiment, the second exit surface 12A2b, which is the final exit surface of the lens body 12A, extends in the horizontal direction. As a result of being configured as a columnar surface (semi-columnar refractive surface), a plurality of vehicle lamps 10A (a plurality of lens bodies 12A) are arranged in a row (see FIGS. 19A and 19B). In the horizontal direction That it can be configured in appearance with a sense of unity vehicle lamp (lens conjugate 16). FIG. 18 is a top view showing a state in which a plurality of vehicle lamps 10 (a plurality of lens bodies 12) of the first embodiment are arranged in a line.

  Other than that, it is the structure similar to the vehicle lamp 10 of the said 1st Embodiment. Hereinafter, the difference from the vehicular lamp 10 of the first embodiment will be mainly described, and the same components as those of the vehicular lamp 10 of the first embodiment will be denoted by the same reference numerals and description thereof will be omitted. .

  As shown in FIGS. 16 and 17B, the vehicular lamp 10A according to the present embodiment includes a light source 14, a first lens unit 12A1, and a second lens unit 12A2, and the light from the light source 14 is converted into the first lens. After being incident on the inside of the first lens portion 12A1 from the first incident surface 12a of the portion 12A1 and partially shielded by the shade 12c of the first lens portion 12A1, the light is emitted from the first emission surface 12A1a of the first lens portion 12A1, Further, the light enters the second lens portion 12A2 from the second entrance surface 12A2a of the second lens portion 12A2, exits from the second exit surface 12A2b of the second lens portion 12A2, and irradiates forward to the front of the vehicle. Cut-off defined by shade 12c at the upper edge shown in FIG. 20 (a) on a virtual vertical screen (located approximately 25m ahead from the front of the vehicle) It is configured as a vehicular headlamp provided with the configured lens body 12A so as to form a (corresponding to the predetermined light distribution pattern of the present invention) light distribution pattern P1a like low-beam comprising in CL1 to CL3.

  FIG. 21A is a top view of the lens body 12A of the second embodiment, FIG. 21B is a side view, and FIG. 21C is a bottom view. FIG. 22 shows an example (cross-sectional view) of the first incident surface 12a, and FIG. 23 illustrates the lens body 12A (first emission surface 12A1a, second incidence surface 12A2a, and second emission surface 12A2b) of the second embodiment. FIG.

  As shown in FIGS. 17A and 21A to 21C, the lens body 12A is a lens body having a shape extending along a first reference axis AX extending in the horizontal direction. Part 12A1, second lens part 12A2, and connecting part 12A3 connecting first lens part 12A1 and second lens part 12A2.

  The first lens unit 12A1 includes a first incident surface 12a, a reflecting surface 12b, a shade 12c, a first emitting surface 12A1a, and a reference point F in optical design disposed in the vicinity of the first incident surface 12a. The second lens portion 12A2 includes a second entrance surface 12A2a and a second exit surface 12A2b. The first entrance surface 12a, the reflection surface 12b, the shade 12c, the first exit surface 12A1a, the second entrance surface 12A2a, and the second exit surface 12A2b are arranged in this order along the first reference axis AX1.

  The first lens unit 12A1 and the second lens unit 12A2 are coupled by a coupling unit 12A3.

  The connecting portion 12A3 is such that the first lens portion 12A1 and the second lens portion 12A2 are surrounded by the first exit surface 12A1a, the second incident surface 12A2a, and the connecting portion 12A3 (the other portions are opened). The space S is connected in a formed state.

  The lens body 12A is integrally molded by injecting a transparent resin such as polycarbonate or acrylic into a mold, and cooling and solidifying (by injection molding).

  The space S is formed by a mold having a pulling direction opposite to the connecting portion 12A3 (see an arrow in FIG. 17A). In order to smoothly remove the mold, the first exit surface 12A1a and the second entrance surface 12A2a are set with draft angles α and β (also referred to as draft angle, preferably 2 ° or more). Accordingly, it is possible to perform die cutting by upper and lower punching at the time of molding, and the lens body 12 (and a lens coupling body 16 described later) can be manufactured at a low cost by one die cutting (without using a slide). The material of the lens body 12A may be a glass other than a transparent resin such as polycarbonate or acrylic.

The first incident surface 12a is formed at the rear end of the first lens portion 12A1, and light from the light source 14 (precisely, the reference point F in optical design) disposed in the vicinity of the first incident surface 12a is received. The light from the light source 14 that is refracted and incident on the inside of the first lens unit 12A1 (for example, a free curved surface convex toward the light source 14) and incident on the inside of the first lens unit 12A1 relates to the shade 12c in the vertical direction. Toward the second reference axis AX2 (see FIG. 17B), and in the horizontal direction toward the shade 12c toward the first reference axis AX1 (see FIG. 22). The surface shape is configured. The first reference axis AX passes through a point (for example, a focal point F _12A4 ) near the shade 12c and extends in the vehicle front-rear direction. The second reference axis AX2 passes through the center of the light source 14 (more precisely, the reference point F) and a point in the vicinity of the shade 12c (for example, the focal point F _12A4 ), and obliquely forward with respect to the first reference axis AX1. Inclined downward. Note that the first incident surface 12a is such that the light from the light source 14 that has entered the first lens portion 12A1 is parallel to the reference axis AX1 in the horizontal direction (see FIG. 6). The shape may be configured.

  The first emission surface 12A1a travels toward the first emission surface 12A1a out of the light from the light source 14 emitted from the first emission surface 12A1a, that is, the light from the light source 14 incident on the first lens portion 12A1. This is a surface that condenses the reflected light that travels toward the first emission surface 12A1a after being internally reflected by the direct light and the reflection surface 12b in the horizontal direction (corresponding to the first direction of the present invention). Specifically, as shown in FIG. 23, the cylindrical axis is configured as a semi-cylindrical surface extending in the vertical direction. The focal line of the first emission surface 12A1a extends in the vertical direction in the vicinity of the shade 12c.

  The second entrance surface 12A2a is formed at the rear end portion of the second lens portion 12A2, and is a surface on which light from the light source 14 emitted from the first exit surface 12A1a enters the second lens portion 12A2, and has a planar shape, for example. It is configured as a surface. Of course, the present invention is not limited to this, and the second incident surface 12A2a may be configured as a curved surface.

  The second emission surface 12A2b is a surface that condenses light from the light source 14 emitted from the second emission surface 12A2b in the vertical direction (corresponding to the second direction of the present invention). Specifically, as shown in FIG. 23, the cylindrical axis is configured as a semi-cylindrical surface extending in the horizontal direction. The focal line of the second exit surface 12A2b extends in the horizontal direction in the vicinity of the shade 12c.

The focal point F _{12A4 of the} lens 12A4 composed of the first emission surface 12A1a and the second lens portion 12A2 (second incidence surface 12A2a and second emission surface 12A2b) having the above _{configuration} is the focal point F _12d of the emission surface 12d of the first embodiment. In the same manner as above, it is set near the shade 12c (for example, near the center in the left-right direction of the shade 12c). This lens 12A4 is similar to the light exit surface 12d of the first embodiment, out of the light from the light source 14 that has entered the first lens portion 12A1, that is, the light from the light source 14 that has entered the first lens portion 12A1. Luminous intensity formed in the vicinity of the focal point F _{12A4 of the} lens 12A4 by the direct light traveling toward the first emission surface 12A1a and the reflected light traveling toward the first emission surface 12A1a after being internally reflected by the reflection surface 12b. The distribution (light source image) is reversely projected to form a low beam light distribution pattern P1a including cut-off lines CL1 to CL3 on the upper edge shown in FIG. 20A on the virtual vertical screen.

  The basic surface shape of the second exit surface 12A2b is as described above, but since the draft angles α and β are set in the first exit surface 12A1a and the second entrance surface 12A2a, Have been adjusted so that.

  FIG. 24 is a diagram for explaining normal lines of the first exit surface 12A1a, the second entrance surface 12A2a, and the second exit surface 12A2b.

That is, when the extraction angles α and β are set in the first exit surface 12A1a and the second entrance surface 12A2a, as shown in FIG. 24, the method passes through the centers of the first exit surface 12A1a and the second entrance surface 12A2a. The lines N _12A1a and N _12A2a are inclined with respect to the horizontal. In this case, when the normal line N _12A2b passing through the center of the second emission surface 12A2b extends in the horizontal direction, the light from the light source 14 emitted from the second emission surface 12A2b travels obliquely upward with respect to the horizontal. And may cause glare.

In order to suppress this, the surface shape of the second emission surface 12A2b is adjusted so that light from the light source 14 emitted from the second emission surface 12A2b becomes light parallel to the first reference axis AX1. ing. For example, the normal line N _{12A2b of} the second emission surface 12A2b is obliquely upward and forward so that the light from the light source 14 emitted from the second emission surface 12A2b is parallel to the first reference axis AX1. The surface shape is adjusted to be inclined toward the surface. This adjustment is finally adjusted to adjust the focus F _{12A4 of the} lens 12A4 including the first exit surface 12A1a and the second lens portion 12A2 (the second entrance surface 12A2a and the second exit surface 12A2b) near the position of the shade 12c. It is. A line with an arrow at the tip in FIG. 24 represents an optical path of light from the light source 14 (more precisely, the reference point F) incident on the lens body 12A.

  The surface connecting the leading edge of the reflecting surface 12b and the lower end edge of the first emitting surface 12A1a is an inclined surface extending obliquely forward and downward from the leading edge of the reflecting surface 12b. Any surface may be used as long as it does not block light from the light source 14 traveling toward the second emission surface 12A2b. Similarly, the upper surface of the lens body 12A, that is, the surface connecting the upper end edge of the first entrance surface 12a and the upper end edge of the second exit surface 12A2b is a surface extending in a substantially horizontal direction. Not limited to any surface as long as it does not block the light from the light source 14 traveling toward the second emission surface 12A2b. Similarly, both side surfaces of the lens body 12A, that is, surfaces connecting the left and right end edges of the first entrance surface 12a and the left and right end edges of the second exit surface 12A2b narrow in a tapered shape toward the first entrance surface 12a. The inclined surface (see FIG. 21A) is not limited to this, and may be any surface as long as it does not block the light from the light source 14 traveling toward the second emission surface 12A2b. .

  In the vehicular lamp 10A (lens body 12A) having the above-described configuration, the light from the light source 14 is transmitted from the first incident surface 12a of the first lens unit 12A1 to the inside of the first lens unit 12A1, as shown in FIG. And is partially shielded by the shade 12c of the first lens unit 12A1, and then exits from the first exit surface 12A1a of the first lens unit 12A1. At that time, the light from the light source 14 emitted from the first emission surface 12A1a is condensed in the horizontal direction by the action of the first emission surface 12A1a (see FIG. 22. Not condensed or hardly collected in the vertical direction). ). Then, the light from the light source 14 emitted from the first emission surface 12A1a passes through the space S, and further enters the second lens unit 12A2 from the second incident surface 12A2a of the second lens unit 12A2. The light exits from the second exit surface 12A2b of the lens portion 12A2 and is irradiated forward. At that time, the light from the light source 14 emitted from the second emission surface 12A2b is condensed in the vertical direction by the action of the second emission surface 12A2b (see FIG. 17B). Not condensed). As described above, the low beam light distribution pattern P1a including the cut-off lines CL1 to CL3 defined by the shade 12c on the upper edge shown in FIG. 20A or the like on the virtual vertical screen (corresponding to the predetermined light distribution pattern of the present invention). ) Is formed.

The low beam light distribution pattern P1a and the like have a relatively high central luminous intensity and are excellent in distance visibility. This is because the light source 14 is disposed in the vicinity of the incident surface 12a (in the vicinity of the reference point F) of the lens body 12A in an attitude in which the optical axis AX ₁₄ of the light source 14 coincides with the second reference axis AX2. intensity (luminosity) is high light on axis AX ₁₄ of the light (direct light) is condensed on the second reference axis AX2 closer toward the shade 12c (e.g., condensed at the center of the shade 12c) be due to is there.

  The degree of diffusion in the horizontal direction and / or the vertical direction of the low beam light distribution pattern is adjusted by adjusting the surface shape (for example, curvature) of the first emission surface 12A1a and / or the second emission surface 12A2b. ) To FIG. 20 (c), and can be freely adjusted. For example, the degree of horizontal diffusion of the low beam light distribution pattern can be freely adjusted by adjusting the surface shape (for example, curvature) of the first emission surface 12A1a. Similarly, the degree of vertical diffusion of the low beam light distribution pattern can be freely adjusted by adjusting the surface shape (for example, curvature) of the second emission surface 12A2b.

  FIG. 19A is a front view showing a state in which a plurality of vehicle lamps 10A (a plurality of lens bodies 12A) of the second embodiment are arranged in a line in the horizontal direction, and FIG. 19B is a top view.

  As shown in FIGS. 19A and 19B, the lens combination 16 includes a plurality of lens bodies 12A. The lens coupling body 16 (the plurality of lens bodies 12A) is integrally molded (injection molding) by injecting a transparent resin such as polycarbonate or acrylic into a mold, and cooling and solidifying. The second exit surfaces 12A2b of each of the plurality of lens bodies 12A are arranged in a row in the horizontal direction in a state of being adjacent to each other, and form a semi-cylindrical exit surface group having a sense of unity extending in a line shape in the horizontal direction. doing.

  By using the lens combined body 16 having the above-described configuration, it is possible to configure a vehicular lamp that looks good with a sense of unity extending in a line shape in the horizontal direction. The lens combination 16 may be formed by molding a plurality of lens bodies 12 in a physically separated state and connecting (holding) them with a holding member (not shown) such as a lens holder.

  As described above, according to the present embodiment, in addition to the effects of the first embodiment, the following effects can be further achieved.

  That is, first, it is possible to provide a lens body 12A (lens coupling body 16) having a sense of unity extending in a line shape in the horizontal direction and a vehicular lamp 10A using the lens body 12A. Second, although the final exit surface, the second exit surface 12A2b, is a semi-cylindrical surface (a semi-cylindrical refracting surface extending in the horizontal direction), it collects light in the horizontal and vertical directions. The lens body 12A (lens coupling body 16) and the vehicle lamp 10A using the lens body 12A (lens coupling body 16) capable of forming the low beam light distribution pattern P1a and the like can be provided.

  The appearance with a sense of unity extending in a line shape in the horizontal direction is that the second emission surface 12A2b which is the final emission surface is a semi-cylindrical surface (a semi-cylindrical refractive surface extending in the horizontal direction). ).

  Even though the second emission surface 12A2b, which is the final emission surface, is a semi-cylindrical surface (a semi-cylindrical refracting surface extending in the horizontal direction), the arrangement for low beam condensed in the horizontal direction and the vertical direction is used. The light pattern P1a and the like can be formed mainly by the first light exit surface 12A1a (a semi-cylindrical refracting surface extending in the vertical direction) of the first lens portion 12A1 for focusing in the horizontal direction. This is because the second light exit surface 12A2b (a semi-cylindrical refracting surface extending in the horizontal direction) of the second lens portion 12A2, which is the final light exit surface of the lens body 12A, is mainly responsible for condensing light in the direction. . That is, it is due to the decomposition of the light collecting function.

  Further, according to the present embodiment, although the extraction angles α and β are set in the first emission surface 12A1a and the second incidence surface 12A2a, the emission is made from the second emission surface 12A2b that is the final emission surface. Provided is a lens body 12A (lens coupling body 16) suitable for a vehicular lamp, and a vehicular lamp 10A using the same, in which light from the light source 14 is parallel to the first reference axis AX1. Can do.

  Next, a modified example will be described.

  FIG. 25 is a diagram illustrating a lens body 12B that is a first modification of the lens body 12A of the second embodiment.

  As shown in FIG. 25, the lens body 12B of this modification is molded in a state where the first lens portion 12A1 and the second lens portion 12A2 are physically separated, and the both are connected by a holding member 18 such as a lens holder. (Holding). The first exit surface 12A1a and the second entrance surface 12A2a are not set with the draft angles α and β, and are plane surfaces (or curved surface shapes) orthogonal to the reference axis AX1, respectively.

  According to this modification, adjustment of the second exit surface 12A2b can be omitted as a result of eliminating the draft angles α and β.

  FIG. 26 is a perspective view for explaining a lens body 12C (first exit surface 12A1a, second entrance surface 12A2a, and second exit surface 12A2b) that is a second modification of the lens body 12A of the second embodiment. is there.

  The lens body 12C of this modification corresponds to a lens body obtained by replacing the first emission surface 12A1a and the second emission surface 12A2b) of the second embodiment.

  That is, the first emission surface 12A1a of the lens body 12C of the present modification is a surface that condenses light from the light source 14 emitted from the first emission surface 12A1a in the vertical direction (corresponding to the first direction of the present invention). is there. Specifically, as shown in FIG. 26, the cylinder axis is configured as a semi-cylindrical surface extending in the horizontal direction. In this case, the focal line of the first emission surface 12A1a extends in the horizontal direction in the vicinity of the shade 12c. Further, the second emission surface 12A2b of the lens body 12C of the present modification is a surface that condenses light from the light source 14 emitted from the second emission surface 12A2b in the horizontal direction (corresponding to the second direction of the present invention). is there. Specifically, as shown in FIG. 26, the cylindrical axis is configured as a semi-cylindrical surface extending in the vertical direction. In this case, the focal line of the second exit surface 12A2b extends in the vertical direction in the vicinity of the shade 12c.

The focal point F _{12A4 of the} lens 12A4 composed of the first exit surface 12A1a and the second lens portion 12A2 (the second entrance surface 12A2a and the second exit surface 12A2b) of the lens body 12C of this modification is the same as in the second embodiment. It is set near the shade 12c (for example, near the center in the left-right direction of the shade 12c).

  FIG. 27 is a front view showing a state in which a plurality of vehicle lamps 10C (a plurality of lens bodies 12C) are arranged in a line in the vertical direction.

  As shown in FIG. 27, the lens combination 16C includes a plurality of lens bodies 12C. The lens coupling body 16C (the plurality of lens bodies 12C) is integrally molded (injection molding) by injecting a transparent resin such as polycarbonate or acrylic into a mold, and cooling and solidifying. The second exit surfaces 12A2b of each of the plurality of lens bodies 12C are arranged in a row in the vertical direction in a state of being adjacent to each other, and form a semi-cylindrical exit surface group having a sense of unity extending in a line shape in the vertical direction. doing.

  By using the lens combined body 16C having the above-described configuration, it is possible to configure the vehicular lamp 10C having a sense of unity extending in a line shape in the vertical direction. The lens combination 16C may be formed by molding the plurality of lens bodies 12C in a physically separated state and connecting (holding) them with a holding member (not shown) such as a lens holder.

  According to this modified example, first, it is possible to provide a lens body 12C (lens coupling body 16C) having a sense of unity extending in a line in the vertical direction and a vehicular lamp 10C using the lens body 12C. Second, although the final emission surface, the second emission surface 12A2b, is a semi-cylindrical surface (a semi-cylindrical refracting surface extending in the vertical direction), the light is condensed in the horizontal direction and the vertical direction. The lens body 12C (lens coupling body 16C) capable of forming the low beam light distribution pattern P1a and the like, and the vehicular lamp 10C using the lens body 12C can be provided.

  The appearance with a sense of unity extending in a line shape in the vertical direction is that the second emission surface 12A2b which is the final emission surface is a semi-cylindrical surface (a semi-cylindrical refractive surface extending in the vertical direction). ).

  Even though the second exit surface 12A2b, which is the final exit surface, is a semi-cylindrical surface (a semi-cylindrical refracting surface extending in the vertical direction), the arrangement for low beams condensed in the horizontal direction and the vertical direction is used. The light pattern P1a and the like can be formed mainly by focusing the light in the vertical direction on the first emission surface 12A1a (a semi-cylindrical refracting surface extending in the horizontal direction) of the first lens portion 12A1, and horizontally. This is because the second light exit surface 12A2b (a semi-cylindrical refracting surface extending in the vertical direction) of the second lens portion 12A2, which is the final light exit surface of the lens body 12A, is mainly responsible for condensing light in the direction. . That is, it is due to the decomposition of the light collecting function.

  The concept of “decomposing the light collecting function” described in the second embodiment is not limited to the vehicular lamp 10 of the first embodiment, and the final emission surface is a hemispherical surface (a hemispherical refractive surface). It can be applied to any vehicular lamp (for example, a vehicular lamp described in JP-A-2005-228502 described in the background art). Hereinafter, this point will be described using the third embodiment and the fourth embodiment.

  Next, as a third embodiment, a direct projection type vehicular lamp 20 to which the concept of “decomposing the light collecting function” described in the second embodiment is applied will be described. Hereinafter, the same components as those of the vehicle lamp 10A of the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 28 is a schematic view of a direct projection type vehicular lamp 20 to which the concept of “disassembling the light collecting function” is applied.

  As shown in FIG. 28, the direct projection type vehicular lamp 20 of the present embodiment includes a light source 14, a shade 22, a first lens unit 12 </ b> A <b> 1, and a second lens unit 12 </ b> A <b> 2, and light from the light source 14 is shaded 22. After being partially shielded by the first lens portion 12A1, the first lens portion 12A1 enters the first lens portion 12A1 from the first incident surface 12A1b, exits from the first exit surface 12A1a of the first lens portion 12A1, and further the second lens. 20A is incident on the inside of the second lens portion 12A2 from the second incident surface 12A2a of the portion 12A2, exits from the second exit surface 12A2b of the second lens portion 12A2, and irradiates forward, so that FIG. (A) Low-beam light distribution pattern P1a including cut-off lines CL1 to CL3 defined by the shade 22 at the upper edge shown in FIG. It is configured as a vehicular headlamp provided with the configured lens body so as to form a (corresponding to the predetermined light distribution pattern of the present invention).

That is, the direct projection type vehicular lamp 20 of the present embodiment uses a convex lens (a convex lens whose final emission surface is a hemispherical surface) used in a general direct projection type vehicular lamp as a first lens. This corresponds to the part replaced with the part 12A1 and the second lens part 12A2. The focal point F _{12A5 of the} lens 12A5 including the first lens portion 12A1 and the second lens portion 12A2 is in the vicinity of the upper edge of the shade 22 disposed in front of the light source 14 so as to cover a part of the light source 14 (light emitting surface). Is set to Unlike the second embodiment, the first incident surface 12A1b has a plane shape (or curved surface shape) perpendicular to the reference axis AX1.

  In the vehicular lamp 20 having the above-described configuration, the light from the light source 14 is partially blocked by the shade 22, and then enters the first lens unit 12A1 from the first incident surface 12A1b of the first lens unit 12A1. The light exits from the first exit surface 12A1a of the one lens portion 12A1. At that time, the light from the light source 14 emitted from the first emission surface 12A1a is condensed in the horizontal direction by the action of the first emission surface 12A1a (not condensed or hardly collected in the vertical direction). Then, the light from the light source 14 emitted from the first emission surface 12A1a passes through the space S, and further enters the second lens unit 12A2 from the second incident surface 12A2a of the second lens unit 12A2. The light exits from the second exit surface 12A2b of the lens portion 12A2 and is irradiated forward. At that time, the light from the light source 14 emitted from the second emission surface 12A2b is condensed in the vertical direction (not condensed or hardly collected in the horizontal direction) by the action of the second emission surface 12A2b. As described above, on the virtual vertical screen, the low beam light distribution pattern P1a including the cut-off lines CL1 to CL3 defined by the shade 22 at the upper edge shown in FIG. 20A and the like (corresponding to the predetermined light distribution pattern of the present invention) ) Is formed.

28, the shade 22 is omitted and the surfaces 12A1a, 12A1b, 12A2a, and 12A2b are adjusted to form the high beam light distribution pattern P _Hi shown in FIG. 29 on the virtual vertical screen. A lamp can be constructed. In this case, the light from the light source 14 enters the first lens unit 12A1 from the first incident surface 12A1b of the first lens unit 12A1, and exits from the first emission surface 12A1a of the first lens unit 12A1. At that time, the light from the light source 14 emitted from the first emission surface 12A1a is condensed in the horizontal direction by the action of the first emission surface 12A1a (not condensed or hardly collected in the vertical direction). Then, the light from the light source 14 emitted from the first emission surface 12A1a passes through the space S, and further enters the second lens unit 12A2 from the second incident surface 12A2a of the second lens unit 12A2. The light exits from the second exit surface 12A2b of the lens portion 12A2 and is irradiated forward. At that time, the light from the light source 14 emitted from the second emission surface 12A2b is condensed in the vertical direction by the action of the second emission surface 12A2b (not collected or hardly collected in the horizontal direction). Thus, the high beam light distribution pattern P _Hi illustrated in FIG. 29 is formed on the virtual vertical screen. FIG. 29 is an example of a high beam light distribution pattern P _Hi formed on a virtual vertical screen (disposed approximately 25 m forward from the front of the vehicle) facing the front of the vehicle.

  Next, as a fourth embodiment, a projector-type vehicular lamp 30 to which the concept of “disassembling the light collecting function” described in the second embodiment will be described. Hereinafter, the same components as those of the vehicle lamp 10A of the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 30 is a schematic diagram of a projector-type vehicular lamp 30 to which the above-described concept of “decomposing the light collecting function” is applied.

  As shown in FIG. 30, the projector-type vehicular lamp 30 according to the present embodiment includes a light source 14, a reflector 32 (elliptic reflecting surface), a shade 34, a first lens unit 12A1, and a second lens unit 12A2. After the light from 14 is reflected by the reflector 32 and partially blocked by the shade 34, the light enters the first lens unit 12A1 from the first incident surface 12A1b of the first lens unit 12A1 and enters the first lens unit 12A1. The light exits from the first exit surface 12A1a, further enters the second lens portion 12A2 from the second entrance surface 12A2a of the second lens portion 12A2, exits from the second exit surface 12A2b of the second lens portion 12A2, and forwards. As a result of the irradiation, the lobby including the cut-off lines CL1 to CL3 defined by the shade 34 at the upper end edge on the virtual vertical screen. Beam light distribution pattern P1a or the like is configured as a vehicular headlamp provided with the configured lens body so as to form a (corresponding to the predetermined light distribution pattern of the present invention).

That is, the projector-type vehicular lamp 30 of the present embodiment includes a convex lens (a convex lens whose final emission surface is a hemispherical surface) used in a general projector-type vehicular lamp, and the first lens portion 12A1. This corresponds to the replacement with the second lens portion 12A2. The shade 32 is configured as a mirror surface extending substantially horizontally from the vicinity of the focal point F _{12A5 of the} lens 12A5 including the first lens portion 12A1 and the second lens portion 12A2 toward the rear. The focal point F _{12A5 of the} lens 12A5 including the first lens portion 12A1 and the second lens portion 12A2 is set in the vicinity of the tip edge of the shade 34. The first focal point F1 of the reflector 32 (elliptic reflecting surface) is set near the light source 14, and the second focal point F2 is the focal point F _{12A5 of the} lens 12A5 including the first lens unit 12A1 and the second lens unit 12A2. It is almost coincident. Unlike the second embodiment, the first incident surface 12A1b has a plane shape (or curved surface shape) perpendicular to the reference axis AX1.

  In the vehicular lamp 30 configured as described above, the light from the light source 14 is reflected by the reflector 32 and partially shielded by the shade 34, and then from the first incident surface 12A1b of the first lens unit 12A1 to the first lens unit 12A1. The light enters the inside and exits from the first exit surface 12A1a of the first lens portion 12A1. At that time, the light from the light source 14 emitted from the first emission surface 12A1a is condensed in the horizontal direction by the action of the first emission surface 12A1a (not condensed or hardly collected in the vertical direction). Then, the light from the light source 14 emitted from the first emission surface 12A1a passes through the space S, and further enters the second lens unit 12A2 from the second incident surface 12A2a of the second lens unit 12A2. The light exits from the second exit surface 12A2b of the lens portion 12A2 and is irradiated forward. At that time, the light from the light source 14 emitted from the second emission surface 12A2b is condensed in the vertical direction (not condensed or hardly collected in the horizontal direction) by the action of the second emission surface 12A2b. As described above, on the virtual vertical screen, the low beam light distribution pattern P1a including the cut-off lines CL1 to CL3 defined by the shade 34 at the upper edge shown in FIG. 20A and the like (corresponding to the predetermined light distribution pattern of the present invention). ) Is formed.

In addition, the vehicle which forms the high beam light distribution pattern P _Hi shown in FIG. 29 on the virtual vertical screen by omitting the shade 34 from the configuration shown in FIG. 30 and adjusting the reflector 32 (elliptic reflection surface) or the like. A headlamp can be configured. In this case, the light from the light source 14 is reflected by the reflector 32, enters the first lens unit 12A1 from the first incident surface 12A1b of the first lens unit 12A1, and enters the first lens unit 12A1 from the first emission surface 12A1a. Exit. At that time, the light from the light source 14 emitted from the first emission surface 12A1a is condensed in the horizontal direction by the action of the first emission surface 12A1a (not condensed or hardly collected in the vertical direction). Then, the light from the light source 14 emitted from the first emission surface 12A1a passes through the space S, and further enters the second lens unit 12A2 from the second incident surface 12A2a of the second lens unit 12A2. The light exits from the second exit surface 12A2b of the lens portion 12A2 and is irradiated forward. At that time, the light from the light source 14 emitted from the second emission surface 12A2b is condensed in the vertical direction by the action of the second emission surface 12A2b (not collected or hardly collected in the horizontal direction). Thus, the high beam light distribution pattern P _Hi illustrated in FIG. 29 is formed on the virtual vertical screen.

  Next, as a fifth embodiment, a vehicle lamp 10D provided with a camber angle will be described with reference to the drawings.

  FIG. 31 (a) is a side view of the vehicular lamp 10D with a camber angle (only the main optical surface), FIG. 31 (b) is a top view (only the main optical surface), and FIG. 31 (c) is a vehicular lamp. It is an example of the light distribution pattern for low beams formed by 10D. 31 (d) to 31 (f) are comparative examples, and FIG. 31 (d) is a side view of the vehicular lamp 10A according to the second embodiment in which a camber angle is not given (only the main optical surface), FIG. (E) is a top view (only the main optical surface), and FIG. 31 (f) is an example of a low beam light distribution pattern formed by the vehicle lamp 10A of the second embodiment. FIG. 32 is a top view (only the main optical surface) for explaining a problem when the camber angle is given.

  As shown in FIG. 31 (b), the vehicular lamp 10D of the present embodiment is configured so that the second lens portion 12A2 of the vehicular lamp 10A of the second embodiment is in a top view with respect to the first reference axis AX1. The inclined surface, that is, the second emission surface 12A2b of the vehicle lamp 10A of the second embodiment is a semi-cylindrical surface extending in a direction inclined by a predetermined angle with respect to the first reference axis AX1 when viewed from above. This corresponds to a configuration (that is, a camber angle θ1 (for example, θ1 = 30 °)).

As a result of a simulation confirmed by the present inventors, when only the camber angle θ1 is given, as shown in FIG. 32, the distance between the first exit surface 12A1a and the second entrance surface 12A2a is set to the first reference axis AX1. On both sides (see arrows B and C in FIG. 32), the focal position F _{B of the} light emitted from the B position of the first emission surface 12A1a and the focal position F _{C of the} light emitted from the C position are greatly shifted. As a result, as shown in FIG. 33, the side where the distance between the first exit surface 12A1a and the second entrance surface 12A2a is widened in the low beam distribution pattern formed on the virtual vertical screen (the right side in FIG. 33). ) Was found to be out of focus without condensing.

  The cause of this blurring will be described as follows with reference to the drawings.

34A is a cross-sectional view at the position B shown in FIG. 32 (only the main optical surface), and the line with an arrow at the tip in FIG. 34A is relative to the first emission surface 12A1a (position B). light RAY1 _B at an incident angle with Te represents the optical path to follow. FIG. 34B is a cross-sectional view at the position C shown in FIG. 32 (only the main optical surface). A line with an arrow at the tip in FIG. 34B is relative to the first emission surface 12A1a (position C). This represents the optical path followed by the light Ray1 _C incident at the same incident angle as shown in FIG. For convenience of explanation, in FIGS. 34 (a) and 34 (b), the first exit surface 12A1a and the second entrance surface 12A2a are drawn with no draft angle set. The same applies when it is set.

As shown in FIG. 34 (b), at the position C, the distance between the first exit surface 12A1a and the second entrance surface 12A2a is wider than at the position B (see FIG. 34 (a)). Therefore, the incident position on the second incident face 12A2a light RAY1 _C becomes lower than the incident position on the second incident face 12A2a light RAY1 _B shown in FIG. 34 (a), the light RAY1 _C incident from the incident position of the downward As shown in FIG. 34 (b), it goes upward with respect to the horizontal. As a result, the blur occurs.

  As a result of diligent studies to improve the blur, the present inventors have improved the blur by adjusting the surface shape of the first emission surface 12A1a, and the light distribution pattern for low beam is totally condensed. (See FIG. 31 (c)).

Based on this knowledge, the first emission surface 12A1a of the present embodiment is a semi-cylindrical surface extending in the vertical direction, and the low beam light distribution pattern is entirely condensed (see FIG. 31C). The surface shape is adjusted as follows. This adjustment is an adjustment for adjusting the shifted focal positions F _B and F _C to the vicinity of the position of the shade 12c, and is performed using predetermined simulation software. 35A is a perspective view of the vehicular lamp 10D of the fifth embodiment (only the main optical surface), and FIG. 35B is a comparative example, and is a perspective view of the vehicular lamp 10A of the second embodiment (main optical). Surface only). Referring to FIG. 35 (a), it can be seen that the first exit surface 12A1a of the present embodiment adjusted as described above has an asymmetric shape with respect to the reference axis AX1.

  The vehicular lamp 10D of the present embodiment has the same configuration as the vehicular lamp 10A of the second embodiment except for the above points.

  According to this embodiment, in addition to the effects of the second embodiment, the following effects can be further achieved.

  That is, firstly, it is possible to provide a new-looking lens body (lens combined body) provided with a camber angle and a vehicle lamp using the lens body. That is, it is possible to provide an excellent-looking lens body (lens combined body) that extends in a line shape in a direction inclined by a predetermined angle with respect to the first reference axis AX1 in a top view, and a vehicle lamp using the lens body. it can. Second, the light distribution for low beam condensed in the horizontal direction and the vertical direction even though the second emission surface 12A2b which is the final emission surface is a semi-cylindrical surface (a semi-cylindrical refractive surface). A lens body (lens combined body) capable of forming a pattern and a vehicular lamp using the lens body can be provided. Thirdly, it is possible to provide a lens body (lens combined body) in which the low-beam light distribution pattern is entirely collected despite the camber angle being provided, and a vehicular lamp using the lens body.

  The second output surface 12A2b, which is the final output surface, has a semi-cylindrical surface (line shape) extending in a line shape in a direction inclined by a predetermined angle with respect to the first reference axis AX1. This is because the second exit surface 12A2b extends in a direction inclined with respect to the first reference axis AX1 when viewed from above.

  Even though the second emission surface 12A2b, which is the final emission surface, is a semi-cylindrical surface (a semi-cylindrical refractive surface), a light distribution pattern for low beam condensed in the horizontal direction and the vertical direction is formed. The first light exit surface 12A1a (semi-cylindrical refracting surface) of the first lens portion 12A1 is mainly responsible for the light collection in the horizontal direction, and the light collection in the vertical direction is mainly performed at the final position of the lens body 12A. This is because the second exit surface 12A2b (semi-cylindrical refracting surface) of the second lens portion 12A2, which is a typical exit surface, is in charge. That is, it is due to the decomposition of the light collecting function.

  Although the camber angle is given, the light distribution pattern for the low beam is totally collected by the first emission surface 12A1a having a semi-cylindrical surface extending in the vertical direction. This is because the surface shape is adjusted so that the light distribution pattern is totally condensed.

  Note that the concept of “giving a camber angle” described in the present embodiment and the idea of improving the blur caused by the provision of the camber angle as described above are for the vehicle of the second embodiment. The present invention is not limited to the lamp 10A (lens body 12A), but can also be applied to the respective modifications, the vehicle lamp (lens body) of the third and fourth embodiments, and the like. Similarly, the present invention can be applied to a vehicular lamp 10J (lens body 12J) of a tenth embodiment described later.

  Next, as a sixth embodiment, a vehicle lamp 10E provided with a slant angle will be described with reference to the drawings.

  FIG. 36 is a front view of the vehicular lamp 10E with a slant angle.

  As shown in FIG. 36, the vehicular lamp 10E of the present embodiment is obtained by tilting the second lens portion 12A2 of the vehicular lamp 10A of the second embodiment with respect to the horizontal in a front view, that is, the above-described The second emission surface 12A2b of the vehicular lamp 10A of the second embodiment is configured as a semi-cylindrical surface extending in a direction inclined by a predetermined angle θ2 with respect to the horizontal (ie, a slant angle θ2 ( For example, it is equivalent to that given θ2 = 12 °). Specifically, the second lens portion 12A2 (second emission surface 12A2b) of the present embodiment is centered on the first reference axis AX1 with the second lens portion 12A2 (second emission surface 12A2b) of the second embodiment. Corresponds to a rotation of a predetermined angle θ2.

  As a result of a simulation confirmed by the present inventors, only by providing the slant angle θ2, the focal line of the second lens portion 12A2 is inclined with respect to the shade 12c, and as a result, as shown in FIGS. 37 (a) and 37 (b). Thus, it was found that the low beam light distribution pattern formed on the virtual vertical screen is in a rotated state (or can be said to be out of focus). FIG. 37A is a diagram for explaining problems that appear in the low beam light distribution pattern when a slant angle is given, and FIG. 37B is a diagram schematically showing FIG. 37A.

  As a result of intensive studies to suppress this rotation (or a blurred state), the present inventors have determined that the first emission surface 12A1a has a predetermined angle θ2 with respect to the vertical in front view as shown in FIG. It is configured as a semi-cylindrical surface extending in an inclined direction, and the reflection surface 12b and the shade 12c are at a predetermined angle in a direction opposite to the second emission surface 12A2b and the first emission surface 12A1a with respect to the horizontal in a front view. It has been found that the rotation is suppressed by arranging in a posture inclined by θ2 (see FIGS. 38A and 38B). FIG. 38A is a diagram for explaining that the problem (rotation) appearing in the low beam light distribution pattern is suppressed, and FIG. 38B is a diagram schematically showing FIG. 38A. .

  The reason why the rotation (or blurred state) is suppressed will be described as follows with reference to the drawings.

  52A is a side view of the vehicular lamp 10E (lens body 12A) of the present embodiment (only the main optical surface from which the first emission surface 12A1a is omitted), and FIG. 52B is a top view (first emission surface). 12A1a is the main optical surface only), and each represents the optical path (that is, the result of the reverse ray tracing) followed by the parallel ray RayAA that has entered the lens body 12A from the second emission surface 12A2b.

  FIG. 52 (d) is a side view of the vehicular lamp 10E (lens body 12A) of the present embodiment (only the main optical surface from which the first emission surface 12A1a is omitted), and FIG. 52 (e) is a top view (first emission surface). 12A1a (only the main optical surface is omitted), each represents an optical path (that is, a result of reverse ray tracing) followed by the parallel ray RayBB incident on the inside of the lens body 12A from the second emission surface 12A2b.

52A to 52D, the second lens portion 12A2 is given a slant angle θ2 (= 10 °), and the focal line of the second lens portion 12A2 is slanted with respect to the horizontal. It is inclined by an angle θ2. As a result, the focal point F _BB in FIG. 52 (c) is located higher than the focal point F _AA in FIG. 52 (a).

  Next, considering the optical path followed by the parallel rays RayAA and RayBB when the first emission surface 12A1a is disposed, this optical path is as shown in FIGS. 53 (a) and 53 (b).

  FIG. 53A is a top view in which the first emission surface 12A1a is added to FIG. 52B, and the optical path followed by the parallel ray RayAA incident on the lens body 12A from the second emission surface 12A2b (that is, the result of the reverse ray tracing). ). FIG. 53 (b) is a top view obtained by adding the first emission surface 12A1a to FIG. 52 (d), and the optical path followed by the parallel ray RayBB incident on the inside of the lens body 12A from the second emission surface 12A2b (that is, the result of the reverse ray tracing). ).

When the slant angle θ2 (= 10 °) is given to the first emission surface 12A1a (that is, the first emission surface 12A1a is configured as a semi-cylindrical surface extending in a direction inclined by a predetermined angle θ2 with respect to the vertical. The component having a low focal point F _AA (that is, RayAA) is refracted by the action of the first emission surface 12A1a and travels to the opposite side to form a focal point, as shown in FIG. 53 (a). On the other hand, the component having a high focal point F _BB (that is, RayBB) is refracted by the action of the first emission surface 12A1a and travels to the opposite side, as shown in FIG. As a result, the focal line is inclined in the direction opposite to the slant direction.

  Therefore, in order to make the shade 12c coincide (substantially coincide) with the focal line inclined opposite to the slant direction, the second emission surface 12A2b and the first emission surface of the reflection surface 12b and the shade 12c are horizontal with respect to the front view. It is arranged in a posture inclined by a predetermined angle θ2 in the opposite direction to the surface 12A1a. As a result, the shade 12c coincides (substantially coincides) with the focal line inclined opposite to the slant direction, and the rotation (or blurred state) is suppressed.

  Based on the above knowledge, the first emission surface 12A1a of the present embodiment is configured as a semi-cylindrical surface extending in a direction inclined by a predetermined angle θ2 with respect to the vertical in a front view. Specifically, the first emission surface 12A1a of the present embodiment rotates the first emission surface 12A1a of the second embodiment by a predetermined angle θ2 around the first reference axis AX1 in the same direction as the second emission surface 12A2b. It corresponds to that.

  In addition, the reflection surface 12b and the shade 12c are arranged in a posture inclined at a predetermined angle θ2 in the opposite direction to the second emission surface 12A2b and the first emission surface 12A1a with respect to the horizontal in a front view. Specifically, the reflecting surface 12b and the shade 12c of this embodiment are different from the reflecting surface 12b and the shade 12c of the second embodiment with the second emitting surface 12A2b and the first emitting surface 12A1a around the first reference axis AX1. This corresponds to a rotation of a predetermined angle θ2 in the reverse direction.

  The vehicular lamp 10E of the present embodiment has the same configuration as the vehicular lamp 10A of the second embodiment, except for the above points.

  According to this embodiment, in addition to the effects of the second embodiment, the following effects can be further achieved.

  That is, firstly, it is possible to provide a new-looking lens body (lens combined body) having a slant angle and a vehicle lamp using the lens body. That is, it is possible to provide an attractive lens body (lens combined body) having a sense of unity extending in a line shape in a direction inclined by a predetermined angle with respect to the horizontal when viewed from the front, and a vehicle lamp using the lens body. Second, the light distribution for low beam condensed in the horizontal direction and the vertical direction even though the second emission surface 12A2b which is the final emission surface is a semi-cylindrical surface (a semi-cylindrical refractive surface). A lens body (lens combined body) capable of forming a pattern and a vehicular lamp using the lens body can be provided. 3rdly, although the slant angle | corner is provided, the lens body (lens coupling body) by which rotation of the light distribution pattern for low beams is suppressed, and a vehicle lamp using the same can be provided.

  The appearance with a sense of unity extending in a line shape in a direction tilted by a predetermined angle with respect to the horizontal is that the second emission surface 12A2b, which is the final emission surface, is a semi-cylindrical surface (a semi-cylindrical shape). This is because the second emission surface 12A2b extends in a direction inclined with respect to the horizontal in a front view.

  Even though the second emission surface 12A2b, which is the final emission surface, is a semi-cylindrical surface (a semi-cylindrical refractive surface), a light distribution pattern for low beam condensed in the horizontal direction and the vertical direction is formed. The first light exit surface 12A1a (semi-cylindrical refracting surface) of the first lens portion 12A1 is mainly responsible for the light collection in the horizontal direction, and the light collection in the vertical direction is mainly performed at the final position of the lens body 12A. This is because the second exit surface 12A2b (semi-cylindrical refracting surface) of the second lens portion 12A2, which is a typical exit surface, is in charge. That is, it is due to the decomposition of the light collecting function.

  Although the slant angle is given, the rotation of the light distribution pattern for the low beam is suppressed because the first emission surface 12A1a extends in a direction inclined by a predetermined angle with respect to the vertical in front view. It is a cylindrical surface, and the shade 12c (and the reflection surface 12b) is arranged in a posture inclined at a predetermined angle in the opposite direction to the second emission surface 12A2b and the first emission surface 12A1a with respect to the horizontal in a front view. It is because it is.

  The concept of “giving a slant angle” described in the present embodiment and the idea of suppressing the rotation generated with the grant of the slant angle as described above are for the vehicle of the second embodiment. The present invention is not limited to the lamp 10A (lens body 12A), but can also be applied to the respective modifications, the vehicular lamp (lens body) of the third and fourth embodiments, and the like. Similarly, the present invention can be applied to a vehicular lamp 10J (lens body 12J) of a tenth embodiment described later.

  Next, as a seventh embodiment, a vehicle lamp 10F provided with a camber angle and a slant angle will be described with reference to the drawings.

  39A is a side view of the vehicular lamp 10F provided with a camber angle and a slant angle (only the main optical surface), FIG. 39B is a top view (only the main optical surface), and FIG. It is an example of the light distribution pattern for low beams formed by the vehicle lamp 10F.

  As shown in FIGS. 39 (a) and 39 (b), the vehicular lamp 10F according to the present embodiment is a first view of the second lens portion 12A2 of the vehicular lamp 10A according to the second embodiment as viewed from above. Inclined with respect to the reference axis AX1 (that is, given the camber angle θ1) and tilted with respect to the horizontal (that is, given the slant angle θ2) in front view, that is, with the fifth embodiment This corresponds to a combination of the sixth embodiment.

  That is, the second emission surface 12A2b of the present embodiment extends in a direction inclined by a predetermined angle with respect to the first reference axis AX1 when viewed from above, as in the fifth embodiment, and is similar to the sixth embodiment. In the front view, it is configured as a semi-cylindrical surface extending in a direction inclined by a predetermined angle θ2 with respect to the horizontal.

  The first emission surface 12A1a of the present embodiment is a semi-cylindrical surface extending in a direction inclined by a predetermined angle θ2 with respect to the vertical when viewed from the front (see FIG. 36), and has a low beam light distribution pattern. The surface shape is adjusted so as to be totally condensed.

  Further, the reflection surface 12b and the shade 12c of the present embodiment are inclined by a predetermined angle θ2 in the opposite direction to the second emission surface 12A2b and the first emission surface 12A1a with respect to the horizontal in the front view as in the sixth embodiment. Arranged in posture.

  According to the present embodiment, it is possible to provide a new-looking lens body (lens combined body) provided with a camber angle and a slant angle, and a vehicular lamp using the lens body. In addition, the fifth and sixth embodiments described above can be provided. The same effect as the embodiment can be obtained.

  It should be noted that the idea of “giving camber angle and slant angle” explained in the present embodiment, and the above-described blurring and rotation generated due to the provision of the camber angle and slant angle are improved and suppressed as described above. This concept is not limited to the vehicular lamp 10A (lens body 12A) of the second embodiment, but can also be applied to the respective modifications, the vehicular lamp (lens body) of the third and fourth embodiments, and the like. Similarly, the present invention can be applied to a vehicular lamp 10J (lens body 12J) of a tenth embodiment described later.

  Next, the vehicular lamp 10G of the first comparative example will be described with reference to the drawings.

  40A is a side view of the vehicular lamp 10G of the first comparative example (only the main optical surface), FIG. 40B is a top view (only the main optical surface), and FIG. 40C is the vehicular lamp 10G. It is an example of the light distribution pattern formed by.

  As shown in FIGS. 40 (a) and 40 (b), the vehicular lamp 10G of the comparative example is configured so that the second lens portion 12A2 of the vehicular lamp 10D of the fifth embodiment is horizontally in front view. This corresponds to a tilted angle (ie, a slant angle θ2 is given).

  That is, the first emission surface 12A1a of the present comparative example is configured as a semi-cylindrical surface extending in the vertical direction when viewed from the front as in the fifth embodiment. That is, unlike the sixth embodiment, the first emission surface 12A1a of the present comparative example is not configured as a semi-cylindrical surface extending in a direction inclined by the predetermined angle θ2 with respect to the vertical in front view.

  Moreover, the reflective surface 12b and the shade 12c of this comparative example are arrange | positioned with the attitude | position which becomes horizontal by front view similarly to 5th Embodiment. That is, unlike the sixth embodiment, the first emission surface 12A1a of the comparative example is inclined in a direction inclined by a predetermined angle θ2 in the opposite direction to the second emission surface 12A2b and the first emission surface 12A1a in the front view. Not arranged in.

  As shown in FIG. 40C, the light distribution pattern formed by the vehicular lamp 10G of this comparative example greatly protrudes upward from the horizontal line, and it can be seen that it is not suitable as a low beam light distribution pattern.

  Next, the vehicular lamp 10H of the second comparative example will be described with reference to the drawings.

  41A is a side view of the vehicular lamp 10H of the second comparative example (only the main optical surface), FIG. 41B is a top view (only the main optical surface), and FIG. 41C is the vehicular lamp 10H. It is an example of the light distribution pattern formed by.

  As shown in FIGS. 41 (a) and 41 (b), the vehicular lamp 10H of this comparative example is similar to the sixth embodiment in the first emission surface 12A1a of the vehicular lamp 10G of the first comparative example. This corresponds to a semi-cylindrical surface extending in a direction inclined by a predetermined angle θ2 with respect to the vertical when viewed from the front.

  That is, the first emission surface 12A1a of this comparative example is configured as a semi-cylindrical surface extending in a direction inclined by a predetermined angle θ2 with respect to the vertical as seen from the front, similarly to the sixth embodiment.

  Moreover, the reflective surface 12b and the shade 12c of this comparative example are arrange | positioned with the attitude | position which becomes horizontal by front view similarly to 5th Embodiment. That is, unlike the sixth embodiment, the first emission surface 12A1a of the comparative example is inclined in a direction inclined by a predetermined angle θ2 in the opposite direction to the second emission surface 12A2b and the first emission surface 12A1a in the front view. Not arranged in.

  As shown in FIG. 41 (c), the light distribution pattern formed by the vehicular lamp 10H of this comparative example greatly protrudes upward from the horizontal line, and it can be seen that it is not suitable as a low beam light distribution pattern.

  Next, as an eighth embodiment, a problem when the camber angle θ1 is increased and a method for solving the problem will be described.

  FIG. 42A shows an example of a low beam light distribution pattern formed by the vehicle lamp 10D of the fifth embodiment (same as the vehicle lamp 10F of the seventh embodiment) when the camber angle θ1 is 30 °. FIG. 42B shows a low-beam light distribution pattern formed by the vehicular lamp 10D of the fifth embodiment (the same applies to the vehicular lamp 10F of the seventh embodiment) when the camber angle θ1 is 45 °. It is an example. The hatched area in FIG. 42 (b) indicates that the area is brighter than the similar area in FIG. 42 (a).

  When the present inventors confirmed by simulation, when the camber angle θ1 is increased (for example, θ1 = 45 °) in the vehicular lamp 10D of the fifth embodiment (the same applies to the vehicular lamp 10F of the seventh embodiment), FIG. As shown in 42 (b), it was found that the area above the cut-off line became brighter.

  The reason for this will be described below with reference to the drawings.

  FIG. 43 is a sectional view of the vehicular lamp 10D of the fifth embodiment (only the main optical surface). A line with an arrow at the tip in FIG. 43 represents an optical path followed by the light Ray2 from the light source 14 incident at a certain incident angle with respect to the first emission surface 12A1a.

  When the camber angle θ1 is increased (for example, θ1 = 45 °) in the vehicle lamp 10D of the fifth embodiment (the same applies to the vehicle lamp 10F of the seventh embodiment), the camber angle θ1 is decreased (for example, θ1 = 30 °). ) As compared with the case, as shown in FIG. 43, the distance between the first exit surface 12A1a and the second entrance surface 12A2a is increased. Therefore, the incident position of the light Ray2 with respect to the second incident surface 12A2a is lower than when the camber angle θ1 is small (for example, θ1 = 30 °), and the light Ray2 incident from the lower incident position is as shown in FIG. In addition, the light travels obliquely upward with respect to the horizontal. As a result, glare occurs and the cut-off line becomes unclear.

  Even if the extraction angles α and β set on the first exit surface 12A1a and the second entrance surface 12A2a are increased, the light Ray2 becomes light traveling obliquely upward with respect to the horizontal for the same reason as described above. It has been found.

  Next, a method for solving the above problem will be described.

  As a result of intensive studies to improve the above problems, the present inventors have found that the light Ray2 directed upward with respect to the horizontal is emitted from a partial region below the second emission surface 12A2b, This partial region is physically cut, or the surface shape of the partial region (for example, so that the light Ray2 emitted from the partial region becomes parallel or downward light with respect to the first reference axis AX) The above-mentioned problem can be improved by adjusting the curvature).

  FIG. 44 (a) is an example in which the lower partial region 12A2b2 of the second emission surface 12A2b is physically cut to leave the upper region 12A2b1 based on the above knowledge. In this way, by cutting a partial region from which light originally directed obliquely upward with respect to the horizontal is cut, it is possible to suppress light traveling obliquely upward. As a result, the occurrence of glare can be suppressed and the cut-off line can be made clear.

  FIG. 44 (b) shows the light Ray2 emitted from the lower partial region 12A2b2 of the second emission surface 12A2b based on the above knowledge so that the light Ray2 becomes parallel or downward with respect to the first reference axis AX. In this example, the surface shape (for example, curvature) of the partial region 12A2b2 is adjusted, and the second emission surface 12A2b is divided into an upper region 12A2b1 and a lower region 12A2b2. As described above, light that travels obliquely upward can also be suppressed by adjusting the partial region from which light that is originally directed upward with respect to the horizontal is emitted as described above. As a result, the occurrence of glare can be suppressed and the cut-off line can be made clear.

  The present inventors have confirmed by simulation that any of the above methods can suppress the above-mentioned problem, that is, that the area above the cut-off line can become brighter.

  Next, as a ninth embodiment, a vehicle lamp 10I in which a second reference axis AX2 is inclined with respect to the first reference axis AX1 in a top view will be described with reference to the drawings.

  FIG. 45 is a top view (only the main optical surface) of the vehicular lamp 10I in which the second reference axis AX2 is inclined with respect to the first reference axis AX1 in a top view.

  As shown in FIG. 45, the vehicular lamp 10I of the present embodiment shades the second reference axis AX2 of the vehicular lamp 10D of the fifth embodiment (or the vehicular lamp 10F of the seventh embodiment). This is equivalent to an axis that is rotated by a predetermined angle about the center in the left-right direction of 12c and tilted with respect to the first reference axis AX1 in a top view.

  According to the present embodiment, in addition to the effects of the fifth embodiment, the Fresnel reflection loss (particularly, the Fresnel reflection loss with respect to the second emission surface 12A2b to which the camber angle is given as shown in FIG. 45) is suppressed. As a result, the effect that the light utilization efficiency is improved can be achieved.

  The concept of “inclining the second reference axis AX2 with respect to the first reference axis AX1 in a top view” described in the present embodiment is applied to the vehicular lamp 10A (lens body 12A) of the fifth embodiment. The present invention is not limited to this, and the present invention can also be applied to the vehicle lamps (lens bodies) of the first to fourth and sixth to eighth embodiments. Similarly, the present invention can be applied to a vehicular lamp 10J (lens body 12J) of a tenth embodiment described later.

  Next, a vehicle lamp 10J (lens body 12J) according to a tenth embodiment will be described with reference to the drawings.

  The vehicular lamp 10J (lens body 12J) of the present embodiment is configured as follows.

46 is a perspective view of the vehicular lamp 10J (lens body 12J), FIG. 47 (a) is a top view, FIG. 47 (b) is a front view, and FIG. 47 (c) is a side view. FIG. 48A shows an example of a low beam light distribution pattern P _LO (synthetic light distribution pattern) formed by the vehicular lamp 10J (lens body 12J), and each part shown in FIGS. 48B to 48D. It is formed by superimposing the distribution light patterns P _SPOT , P _MID and P _WIDE .

The lens body 12J of the present embodiment forms a spot light distribution pattern P _SPOT (see FIG. _48B ), and the same first optical system as the lens body 12A of the second embodiment (see FIG. 49A). ) And a second optical system (see FIG. 49B) for forming a mid light distribution pattern P _MID (see FIG. _48C ) diffused from the spot light distribution pattern P _SPOT , and A third optical system (see FIG. 49C) that forms a wide light distribution pattern P _WIDE (see FIG. 48D (d)) diffused from the mid light distribution pattern P _MID is provided.

  Hereinafter, differences from the vehicular lamp 10A (lens body 12A) of the second embodiment will be mainly described, and the same configuration as the vehicular lamp 10A (lens body 12A) of the second embodiment will be the same. Reference numerals are assigned and explanations thereof are omitted.

  As shown in FIGS. 46 and 47, the lens body 12J of the present embodiment has the same configuration as the lens body 12A of the second embodiment, and includes a first rear end portion 12A1aa, a front end portion 12A1bb, and a first rear end portion 12A1aa. And a pair of left and right side surfaces 44a, 44b disposed between the first front end portion 12A1bb and a lower reflective surface 12b disposed between the first rear end portion 12A1aa and the first front end portion 12A1bb. A lens unit 12A1, a second lens unit 12A2 disposed in front of the first lens unit 12A1, and including a second rear end unit 12A2aa and a second front end unit 12A2bb, and the first lens unit 12A1 and the second lens unit 12A2. A lens body that includes a connected portion 12A3 and further includes an upper surface 44c disposed between the first rear end portion 12A1aa and the first front end portion 12A1bb of the first lens portion 12A1. It is configured.

  The lens body 12J of the present embodiment is integrally molded by injecting a transparent resin such as polycarbonate or acrylic, cooling, and solidifying (by injection molding) as in the above embodiments.

  50A is a front view of the first rear end portion 12A1aa of the first lens portion 12A1, FIG. 50B is a cross-sectional view (schematic diagram) along AA in FIG. 50A, and FIG. It is BB sectional drawing (schematic diagram) of Fig.50 (a).

  As shown in FIGS. 50A and 50B, the first rear end portion 12A1aa of the first lens portion 12A1 is formed on the first incident surface 12a and the left and right sides of the first incident surface 12a. It includes a pair of left and right incident surfaces 42a and 42b disposed so as to surround the space between the light source 14 disposed in the vicinity of the incident surface 12a and the first incident surface 12a from both the left and right sides. As shown in FIGS. 50A and 50C, the first rear end portion 12A1aa further includes a space between the light source 14 and the first incident surface 12a on the upper side of the first incident surface 12a. The upper entrance surface 42c is disposed so as to surround the surface.

  The tip of the lower reflecting surface 12b includes a shade 12c.

  As shown in FIG. 46, the first front end portion 12A1bb of the first lens portion 12A1 includes a semicircular columnar first emission surface 12A1a extending in the vertical direction and a pair of left and right arranged on the left and right sides of the first emission surface 12A1a. Output surfaces 46a and 46b.

  The second rear end portion 12A2aa of the second lens portion 12A2 includes a second incident surface 12A2a, and the second front end portion 12A2bb of the second lens portion 12A2 includes a second emission surface 12A2b.

  The second emission surface 12A2b includes a semi-cylindrical region 12A2b3 extending in the horizontal direction and an extended region 12A2b4 extending obliquely upward and rearward from the upper edge of the semi-cylindrical region 12A2b3.

  The connecting part 12A3 includes the first lens part 12A1 and the second lens part 12A2 at the upper part thereof, the first front end part 12A1bb of the first lens part 12A1, the second rear end part 12A2aa of the second lens part 12A2, and the connecting part. The space S surrounded by the portion 12A3 is connected in a formed state.

  FIG. 49A is a side view of the first optical system (only the main optical surface).

As shown in FIG. 49A, the first incident surface 12a, the lower reflecting surface 12b (and the shade 12c), the first exit surface 12A1a, the second entrance surface 12A2a, and the second exit surface 12A2b (semi-cylindrical shape) In the region 12A2b3), the light Ray _SPOT from the light source 14 that has entered the first lens unit 12A1 from the first incident surface 12a is partially blocked by the shade 12c, and is internally reflected by the lower reflecting surface 12b. The light exits from the first exit surface 12A1a, and further enters the second lens portion 12A2 from the second entrance surface 12A2a and enters a partial region A1 (second region 12A2b3) of the second exit surface 12A2b (semi-columnar region 12A2b3). As shown in FIG. 48 (b), the cut-off line defined by the shade 12c is included in the upper edge as shown in FIG. 48 (b). Constitute a first optical system for forming a light distribution pattern P _SPOT spot (corresponding to the first light distribution pattern of the present invention).

  FIG. 49B is a top view of the second optical system (only the main optical surface).

As shown in FIG. 49B, a pair of left and right entrance surfaces 42a and 42b, a pair of left and right side surfaces 44a and 44b, a pair of left and right exit surfaces 46a and 46b, a second entrance surface 12A2a, and a second exit surface 12A2b ( The semi-cylindrical region 12A2b3) has the light Ray _MID from the light source 14 incident on the inside of the first lens portion 12A1 through the pair of left and right incident surfaces 42a and 42b and internally reflected by the pair of left and right side surfaces 44a and 44b. The light exits from the pair of exit surfaces 46a and 46b, and further enters the second lens portion 12A2 from the second entrance surface 12A2a, and is mainly a partial region A1 of the second exit surface 12A2b (semi-columnar region 12A2b3). heavy by being irradiated both left and right sides of the region A2, A3 forward emitted (FIG. 47 (b) refer), as shown in FIG. 48 (c), the spot light distribution pattern P _sPOT Is the constitute a second optical system for forming a mid light distribution pattern P _MID diffused from the light distribution pattern P _SPOT spot.

The pair of left and right entrance surfaces 42a and 42b is refracted by light (mainly light Ray _MID spreading in the left and right direction, see FIG. _50B ) that does not enter the first entrance surface 12a among the light from the light source 14. As shown in FIG. 50 (b), the surface incident on the inside of one lens portion 12 </ b> A <b> 1 is configured as a curved surface (for example, a free curved surface) convex toward the light source 14.

  As shown in FIG. 47A, the pair of left and right side surfaces 44a and 44b are a pair of left and right side surfaces as viewed from the top, from the first front end portion 12A1bb side of the first lens portion 12A1 toward the first rear end portion 12A1aa side. The space | interval between 44a, 44b is comprised as a curved surface (for example, free-form surface) convex toward the outer side which narrows in a taper shape. Further, as shown in FIG. 47 (c), the pair of left and right side surfaces 44a and 44b are arranged on the upper side of the first lens portion 12A1 from the first front end portion 12A1bb side toward the first rear end portion 12A1aa side view. The edge and the lower edge are configured as surfaces having a tapered shape.

The pair of left and right side surfaces 44a and 44b reflect light Ray _MID from the light source 14 incident on the inside of the first lens portion 12A1 from the pair of left and right entrance surfaces 42a and 42b toward the pair of left and right exit surfaces 46a and 46b. No metal vapor deposition is used on the reflecting surface (total reflection).

  The pair of left and right emission surfaces 46a and 46b are configured as planar surfaces. Of course, not limited to this, it may be configured as a curved surface.

With the second optical system having the above-described configuration, the mid light distribution pattern P _MID shown in FIG. _48C is formed on the virtual vertical screen.

The vertical dimension of the mid light distribution pattern P _MID is about 10 degrees in FIG. 48C, but is not limited to this. For example, the surface shape of the pair of left and right entrance surfaces 42a and 42b (for example, in the vertical direction) It can be adjusted freely by adjusting the curvature.

In addition, the position of the upper edge of the mid light distribution pattern P _MID is slightly below the horizontal line in FIG. 48C, but is not limited to this, and the surface shape of the pair of left and right entrance surfaces 42a and 42b (for example, left and right) It can be freely adjusted by adjusting the inclination of the pair of incident surfaces 42a and 42b.

Further, in FIG. _48C , the right end and the left end of the mid light distribution pattern P _MID extend to about 30 degrees to the right and about 30 degrees to the left, but the present invention is not limited to this. For example, a pair of left and right entrance surfaces 42a, 42b and / or a pair of left and right side surfaces 44a and 44b (for example, respective horizontal curvatures) can be adjusted freely.

  FIG. 49C is a side view of the third optical system (only the main optical surface).

As shown in FIG. 49 (c), the upper incident surface 42c, the upper surface 44c, the coupling portion 12A3, and the second emission surface 12A2b (extended region 12A2b4) enter the first lens portion 12A1 from the upper incident surface 42c. The light Ray _WIDE from the light source 14 that has been internally reflected by the upper surface 44c and traveled through the connecting portion 12A3 is emitted from the second emission surface 12A2b (the region A4 above each of the regions A1 to A3, that is, the extension region 12A2b4). by being irradiated forward Te, as shown in FIG. 48 (d), it is superimposed on the light distribution pattern for spot P _sPOT and mid light distribution pattern P _MID, wide diffused from mid light distribution pattern P _MID A third optical system for forming the light distribution pattern P _WIDE is configured.

The upper incident surface 42c refracts light (mainly, light Ray _Wide spreading upward, see FIG. _50C ) that does not enter the first incident surface 12a out of the light from the light source 14, and the first lens portion 12A1. As shown in FIG. 50C, the surface that enters the inside is configured as a curved surface (for example, a free-form surface) that is convex toward the light source 14.

As shown in FIGS. 46 and 49C, the upper surface 44c is an outer side inclined obliquely downward from the first front end portion 12A1bb side of the first lens portion 12A1 toward the first rear end portion 12A1aa side view. It is configured as a surface having a curved surface shape convex toward the surface. Further, as shown in FIG. 47A, the upper surface 44c has a left edge and a right edge as viewed from the upper surface as it goes from the first front end portion 12A1bb side of the first lens portion 12A1 toward the first rear end portion 12A1aa side. It is configured as a surface that narrows in a tapered shape. Specifically, the upper surface 44c is such that the light Ray _WIDE from the light source 14 (more precisely, the reference point F) incident on the first lens portion 12A1 from the upper incident surface 42c becomes parallel light in the vertical direction. The surface shape is configured. Further, the upper surface 44c extends in a direction perpendicular to the paper surface in FIG. 49C with respect to the horizontal direction.

The upper surface 44c is a reflecting surface that internally reflects (totally reflects) the light Ray _WIDE from the light source 14 that has entered the first lens portion 12A1 from the upper incident surface 42c toward the second emitting surface 12A2b (extended region 12A2b4). And metal vapor deposition is not used.

  The extension region 12A2b4 is configured as a planar surface extending obliquely upward and rearward from the upper edge of the second emission surface 12A2b (semi-columnar region 12A2b3). Of course, not limited to this, it may be configured as a curved surface. The semi-cylindrical region 12A2b3 and the extended region 12A2b4 are smoothly connected without a step.

Top 44c, as shown in FIG. 49 (c), includes a reflecting surface for overhead sign 44c1 for forming a light distribution pattern P _OH for overhead sign irradiating the cutoff line above the road signs and the like. The overhead sign reflecting surface 44c1 enters the first lens portion 12A1 from the upper incident surface 42c, is reflected by the overhead sign reflecting surface 44c1, and the light Ray _OH from the light source 14 that travels inside the connecting portion 12A3 is As shown in FIG. 48 (d), an overhead sign light distribution pattern _POH is formed above the cut-off line by emitting from the two exit surfaces 12A2b (extension regions 12A2b4) and irradiating obliquely upward to the front. The surface shape is configured. The overhead sign reflecting surface 44c1 can be omitted as appropriate.

The third optical system includes the upper incident surface 42c, the coupling portion 12A3, and the second emission surface 12A2b (extension region 12A2b4) instead of the above, and is provided from the upper incident surface 42c to the inside of the first lens portion 12A1. The light Ray _WIDE from the incident light source 14 travels inside the connecting portion 12A3 without being internally reflected, and is emitted directly from the second emission surface 12A2b (extension region 12A2b4) and irradiated forward, as shown in FIG. As shown in d), an optical system for forming the wide light distribution pattern P _WIDE may be used.

With the third optical system configured as described above, the wide light distribution pattern P _WIDE and the overhead sign light distribution pattern P _{OH shown} in FIG. _48D are formed on the virtual vertical screen.

The vertical dimension of the wide light distribution pattern P _WIDE is about 15 degrees in FIG. _48D , but is not limited to this, and for example, the surface shape (for example, the curvature in the vertical direction) of the upper incident surface 42c is adjusted. By doing so, it can be adjusted freely.

Further, the position of the upper edge of the wide light distribution pattern P _WIDE is along the horizontal line in FIG. 48D, but is not limited to this, and can be freely adjusted by adjusting the inclination of the upper surface 44c. .

In the present embodiment, as shown in FIG. 46, the upper surface 44c includes a left upper surface 44c2 and a right upper surface 44c3 that are divided into left and right by a vertical surface including the reference axis AX1, and each of the left upper surface 44c2 and the right upper surface 44c3. The slopes are different from each other. Specifically, the left upper surface 44c2 is inclined below the right upper surface 44c3. As a result, as shown in FIG. 48D, the wide light distribution pattern P _WIDE includes a cut-off line having a left-right step difference with the upper end edge on the left side lower than the upper end edge on the right side with respect to the vertical line. (If you are driving on the right side) Of course, conversely, the left upper surface 44c2 may be tilted above the right upper surface 44c3. As a result, the wide light distribution pattern P _WIDE can include a cut-off line having a left-right step difference in which the upper end edge on the left side is higher than the upper end edge on the right side with respect to the vertical line (in the case of left-hand traffic).

In addition, the right end and the left end of the wide light distribution pattern P _WIDE extend to about 65 degrees to the right and to about 65 degrees to the left in FIG. 48D. However, the present invention is not limited to this. For example, the upper incident surface 42c (for example, It can be adjusted freely by adjusting its horizontal curvature.

  According to this embodiment, in addition to the effects of the second embodiment, the following effects can be further achieved.

That is, first, it is possible to provide a lens body 12J that can maintain a line-like light emission appearance even when the viewpoint position changes, and a vehicle lamp 10J including the lens body 12J. Secondly, it is possible to provide a lens body 12J capable of realizing the appearance of uniform light emission (or substantially uniform light emission) and a vehicle lamp 10J including the lens body 12J. Third, the efficiency of taking light from the light source 14 into the lens body 12J is dramatically improved. Fourthly, it is possible to provide a lens body 12J having a sense of unity extending in a line shape in a predetermined direction, and a vehicle lamp 10J including the lens body 12J. Fifth, even though the second emission surface 12A2b, which is the final emission surface, is a semi-cylindrical surface 12A2b3 (semi-cylindrical refractive surface), the distribution for the spot condensed in the horizontal and vertical directions is used. A lens body 12J capable of forming the light pattern P _SPOT and a vehicular lamp 10J provided with the lens body 12J can be provided.

One lens body 12J can maintain a line-like light emission appearance even if the viewpoint position changes, that is, a plurality of light distribution patterns having different degrees of diffusion, that is, a spot light distribution pattern P _SPOT (the present invention). Light distribution pattern P _MID (corresponding to the second light distribution pattern of the present invention) and wide light distribution pattern P _WIDE (corresponding to the third light distribution pattern of the present invention). A plurality of optical systems to be formed, that is, a first optical system (see FIG. 49A), a second optical system (see FIG. 49B), and a third optical system (see FIG. 49C) are provided. Is due to being. In order to achieve this effect, at least the first optical system (see FIG. 49 (a)) and the second optical system (see FIG. 49 (b)) may be provided. 49 (c)) can be omitted as appropriate.

  Appearance of uniform light emission (or substantially uniform light emission) can be realized by the first lens portion from each incident surface, that is, the first incident surface 12a, the pair of left and right incident surfaces 42a and 42b, and the upper incident surface 42c. The light from the light source 14 incident on the inside of 12A1 is reflected by the respective reflecting surfaces, that is, the lower reflecting surface 12b, the pair of left and right side surfaces 44a and 44b, and the upper surface 44c. 51), and the reflected light from the respective reflecting surfaces, that is, the lower reflecting surface 12b, the pair of left and right side surfaces 44a and 44b, and the upper surface 44c is almost the entire area of the second emitting surface 12A2b that is the final emitting surface. That is, the reflected light from the lower reflecting surface 12b is a partial area A1 (of the second emitting surface 12A2b (semi-cylindrical region 12A2b3) that is the final emitting surface. 47 (b)), and the reflected light from the pair of left and right side surfaces 44a and 44b is a partial region of the second emission surface 12A2b (semi-cylindrical region 12A2b3) that is mainly the final emission surface. The light emitted from the regions A2 and A3 on both the left and right sides of A1 (see FIG. 47B), and the reflected light from the upper surface 44c is mainly the second emission surface 12A2b (each of the regions A1 to A3) that is the final emission surface. Upper region A4, that is, by exiting from extended region 12A2b4). In order to achieve this effect, at least the first optical system (see FIG. 49 (a)) and the second optical system (see FIG. 49 (b)) may be provided. 49 (c)) can be omitted as appropriate.

  The efficiency of taking the light from the light source 14 into the lens body 12J is greatly improved because the respective incident surfaces, that is, the first incident surface 12a, the pair of left and right incident surfaces 42a and 42b, and the upper incident surface 42c are light sources. 14 (see FIGS. 50 (a) to 50 (c)). In order to achieve this effect, at least the first incident surface 12a and the pair of left and right incident surfaces 42a and 42b may be provided, and the upper incident surface 42c can be omitted as appropriate.

  The vehicular lamp 10J (lens body 12J) of the present embodiment corresponds to the above concept applied to the vehicular lamp 10A of the second embodiment including the first emission surface 12A1a and the second emission surface 12A2b. Not limited to this. That is, the above concept is applied to the vehicular lamp 10 according to the first embodiment including one emission surface, for example, other than the vehicular lamp 10A according to the second embodiment including the first emission surface 12A1a and the second emission surface 12A2b. It can also be applied.

  The second output surface 12A2b, which is the final output surface, can be configured as a semi-cylindrical surface 12A2b3 (a semi-cylindrical refracting surface). It is because it is.

The spot light distribution pattern P _SPOT condensed in the horizontal direction and the vertical direction even though the second emission surface 12A2b, which is the final emission surface, is a semi-cylindrical surface 12A2b3 (a semi-cylindrical refractive surface). The first light exit surface 12A1a (semi-cylindrical refractive surface) of the first lens portion 12A1 is mainly responsible for condensing in the horizontal direction, and the lens body mainly condenses in the vertical direction. This is because the second exit surface 12A2b (a semi-cylindrical refractive surface) of the second lens portion 12A2, which is the final exit surface of 12J, takes charge. That is, it is due to the decomposition of the light collecting function.

  In addition, each idea explained in the first to ninth embodiments and the modifications thereof, for example, the idea of “giving camber angle” explained in the fifth embodiment, and the occurrence of this camber angle. The concept of improving the blur as described above, the concept of “giving a slant angle” explained in the sixth embodiment, and the rotation generated with the grant of the slant angle as described above The idea of suppressing, the idea of “giving camber angle and slant angle” explained in the seventh embodiment, and the blur and rotation generated by the provision of the camber angle and slant angle are as described above. Of course, the idea of improvement and suppression can be applied to the vehicular lamp 10J (lens body 12J) of the present embodiment.

In the tenth embodiment, the second optical system (see FIG. 49B) is configured to form the mid light distribution pattern P _MID , and the third optical system (see FIG. 49C) is configured. Although the example configured to form the wide light distribution pattern P _WIDE has been described, the present invention is not limited to this.

For example, on the contrary, the second optical system (see FIG. 49B) is configured to form a wide light distribution pattern P _WIDE and the third optical system (see FIG. 49C) is mid. The light distribution pattern P _MID may be formed.

  For example, the surface shape (for example, the curvature in the horizontal direction) of the pair of left and right entrance surfaces 42a and 42b and / or the pair of left and right side surfaces 44a and 44b constituting the second optical system is adjusted as shown in FIG. Thus, the light distribution pattern can be expanded (for example, in the horizontal direction), and the light distribution pattern can be narrowed (for example, in the horizontal direction) by adjusting as shown in FIG. Accordingly, by adjusting the surface shape (for example, the curvature in the horizontal direction) of the pair of left and right entrance surfaces 42a and 42b and / or the pair of left and right side surfaces 44a and 44b constituting the second optical system, the mid light distribution pattern can be obtained. Not limited to this, a wide light distribution pattern can also be formed.

  Similarly, by adjusting the surface shape (for example, the curvature in the horizontal direction) of the upper incident surface 42c constituting the third optical system as shown in FIG. 55A, the light distribution pattern (for example, in the horizontal direction) is adjusted. ) And the light distribution pattern can be narrowed (for example, in the horizontal direction) by adjusting as shown in FIG. Therefore, by adjusting the surface shape (for example, the curvature in the horizontal direction) of the upper entrance surface 42b constituting the third optical system, not only the wide light distribution pattern but also the mid light distribution pattern can be formed. .

Of course, both the second optical system (see FIG. 49B) and the third optical system (see FIG. 49C) may be configured to form the wide light distribution pattern P _WIDE . Conversely, the second optical system (see FIG. 49B) and the third optical system (see FIG. 49C) may both be configured to form the mid light distribution pattern P _MID. .

  Each numerical value shown in the above embodiment and each modified example is an exemplification, and any appropriate numerical value different from this can be used.

  The above embodiment is merely an example in all respects. The present invention is not construed as being limited to these descriptions. The present invention can be implemented in various other forms without departing from the spirit or main features thereof.

  DESCRIPTION OF SYMBOLS 10, 10A-10J ... Vehicle lamp, 12, 12A, 12J ... Lens body, 12A1 ... 1st lens part, 12A1a ... 1st output surface, 12A1aa ... 1st rear end part, 12A1bb ... 1st front end part, 12A2 ... Second lens portion, 12A2a ... second entrance surface, 12A2aa ... second rear end portion, 12A2b ... second exit surface, 12A3 ... connecting portion, 12a ... first entrance surface, 12b ... reflecting surface (lower reflecting surface), 12c ... Shade, 12d ... Emission surface, 14 ... Light source, 16, 16C ... Lens combination, 18 ... Holding member, 42a, 42b ... Pair of left and right entrance surfaces, 42c ... Top entrance surface, 44a, 44b ... Pair of left and right sides, 44c ... Upper surface, 44c1 ... Reflective surface for overhead sign, 44c2 ... Left upper surface, 44c3 ... Right upper surface, 46a, 46b ... A pair of left and right exit surfaces

Claims (19)

A first lens unit and a second lens unit are disposed along a first reference axis extending in a horizontal direction, and light from a light source enters the first lens unit from a first incident surface of the first lens unit. After being incident and partially shielded by the shade of the first lens portion, the light is emitted from the first exit surface of the first lens portion, and further from the second entrance surface of the second lens portion. A predetermined light distribution pattern including a cut-off line defined by the shade is formed on the upper end edge by being incident on the inside and emitted from the second emission surface of the second lens unit and irradiated forward. In the lens body made,
The second emission surface is a semi-cylindrical surface extending in a direction inclined with respect to the first reference axis in a top view.
The first emitting surface is a semi-cylindrical surface extending in a vertical direction, and the surface shape of the first emitting surface is adjusted so that the predetermined light distribution pattern is entirely condensed. The lens body is a lens body having a shape extending along the first reference axis,
The first lens unit includes the first incident surface, the reflective surface, the shade, and the first emission surface,
The second lens unit includes the second entrance surface and the second exit surface,
The first incident surface, the reflecting surface, the shade, the first exit surface, the second entrance surface, and the second exit surface are arranged in this order along the first reference axis,
The first incident surface is a surface on which light from the light source disposed in the vicinity of the first incident surface is refracted and is incident on the inside of the first lens unit, and is from the light source incident on the inside of the first lens unit. At least in the vertical direction passes through the center of the light source and a point in the vicinity of the shade, and converges toward a second reference axis inclined forward and downward with respect to the first reference axis. Is configured to
The reflective surface extends forward from the lower end edge of the incident surface,
The lens body according to claim 1, wherein the shade is formed at a tip portion of the reflecting surface. A first lens unit and a second lens unit are disposed along a first reference axis extending in a horizontal direction, and light from a light source enters the first lens unit from a first incident surface of the first lens unit. After being incident and partially shielded by the shade of the first lens portion, the light is emitted from the first exit surface of the first lens portion, and further from the second entrance surface of the second lens portion. A predetermined light distribution pattern including a cut-off line defined by the shade is formed on the upper end edge by being incident on the inside and emitted from the second emission surface of the second lens unit and irradiated forward. In the lens body made,
The second emission surface is a semi-cylindrical surface extending in a direction inclined by a predetermined angle with respect to the horizontal in a front view,
The first emission surface is a semi-cylindrical surface extending in a direction inclined by the predetermined angle with respect to vertical in a front view;
The said shade is a lens body arrange | positioned with the attitude | position inclined by the said predetermined angle in the reverse direction with respect to the said 2nd output surface and the said 1st output surface with respect to the horizontal in front view. The second emission surface extends in a direction inclined with respect to the first reference axis when viewed from above.
4. The lens body according to claim 3, wherein a surface shape of the first emission surface is adjusted so that the predetermined light distribution pattern is entirely condensed. The lens body is a lens body having a shape extending along the first reference axis,
The first lens unit includes the first incident surface, the reflective surface, the shade, and the first emission surface,
The second lens unit includes the second entrance surface and the second exit surface,
The first incident surface, the reflecting surface, the shade, the first exit surface, the second entrance surface, and the second exit surface are arranged in this order along the first reference axis,
The first incident surface is a surface on which light from the light source disposed in the vicinity of the first incident surface is refracted and is incident on the inside of the first lens unit, and is from the light source incident on the inside of the first lens unit. At least in the vertical direction passes through the center of the light source and a point in the vicinity of the shade, and converges toward a second reference axis inclined forward and downward with respect to the first reference axis. Is configured to
The reflecting surface extends forward from the lower end edge of the incident surface and is inclined at the predetermined angle with respect to the horizontal in the direction opposite to the second emission surface and the first emission surface in a front view. Arranged in a posture,
The lens body according to claim 3, wherein the shade is formed at a tip portion of the reflecting surface. The lens body includes the first lens unit, the second lens unit, and a connecting unit that connects the first lens unit and the second lens unit,
The said connection part connected the said 1st lens part and the said 2nd lens part in the state in which the space enclosed by the said 1st output surface, the said 2nd entrance surface, and the said connection part was formed. Or the lens body of 5. The lens body is a lens body molded integrally by injection molding using a mold,
The space is formed by a mold having a pulling direction opposite to the connecting portion,
In order to smoothly remove the mold, a draft angle is set for each of the first exit surface and the second entrance surface,
The surface shape of the second emission surface is adjusted so that light from the light source emitted from the second emission surface becomes light parallel to the first reference axis. Lens body.   The lens body according to any one of claims 1 to 7, wherein a lower partial region of the second emission surface is cut.   The lower partial area of the second emission surface is adjusted in surface shape so that light emitted from the partial area is parallel or downward with respect to the first reference axis. The lens body according to any one of 1 to 7.   The lens body according to any one of claims 2 and 5 to 7, wherein the second reference axis is inclined with respect to the first reference axis in a top view. A lens assembly including a plurality of the lens bodies according to any one of claims 1 to 10 and integrally molded,
The second combined surfaces of the plurality of lens bodies are arranged in a row in a state of being adjacent to each other, and constitute a semi-columnar output surface group extending in a line shape in a predetermined direction. A light source, a first lens portion and a second lens portion disposed along a first reference axis extending in a horizontal direction, wherein light from the light source is transmitted from the first incident surface of the first lens portion to the first lens; After being incident on the inside of the unit and partially shielded by the shade of the first lens unit, then exiting from the first exit surface of the first lens unit, and further from the second entrance surface of the second lens unit A predetermined light distribution pattern including a cut-off line defined by the shade is formed on the upper edge by being incident on the inside of the two lens portions, emitted from the second exit surface of the second lens portion, and irradiated forward. In the vehicular lamp provided with the lens body configured as described above,
The second emission surface is a semi-cylindrical surface extending in a direction inclined with respect to the first reference axis in a top view.
The first emission surface is a vehicular lamp that is a semi-cylindrical surface extending in a vertical direction, and whose surface shape is adjusted so that the predetermined light distribution pattern is entirely condensed. The lens body is a lens body having a shape extending along the first reference axis,
The first lens unit includes the first incident surface, the reflective surface, the shade, and the first emission surface,
The second lens unit includes the second entrance surface and the second exit surface,
The first incident surface, the reflecting surface, the shade, the first exit surface, the second entrance surface, and the second exit surface are arranged in this order along the first reference axis,
The first incident surface is a surface on which light from the light source disposed in the vicinity of the first incident surface is refracted and is incident on the inside of the first lens unit, and is from the light source incident on the inside of the first lens unit. At least in the vertical direction passes through the center of the light source and a point in the vicinity of the shade, and converges toward a second reference axis inclined forward and downward with respect to the first reference axis. Is configured to
The reflective surface extends forward from the lower end edge of the incident surface,
The vehicular lamp according to claim 12, wherein the shade is formed at a tip portion of the reflecting surface. The first lens unit includes a light source, a first lens unit and a second lens unit arranged along a first reference axis extending in a horizontal direction, and light from the light source is transmitted from the first incident surface of the first lens unit. After entering the inside and partially shielded by the shade of the first lens portion, the light is emitted from the first exit surface of the first lens portion, and further from the second entrance surface of the second lens portion. A predetermined light distribution pattern including a cut-off line defined by the shade is formed at the upper end edge by being incident on the inside of the lens unit and emitted from the second exit surface of the second lens unit and irradiated forward. In the vehicular lamp provided with the lens body configured in
The second emission surface is a semi-cylindrical surface extending in a direction inclined by a predetermined angle with respect to the horizontal in a front view,
The first emission surface is a semi-cylindrical surface extending in a direction inclined by the predetermined angle with respect to vertical in a front view;
The said shade is a vehicle lamp arrange | positioned with the attitude | position inclined by the said predetermined angle in the opposite direction with respect to the said 2nd output surface and the said 1st output surface with respect to the horizontal in front view. The second emission surface extends in a direction inclined with respect to the first reference axis when viewed from above.
The vehicular lamp according to claim 14, wherein a surface shape of the first emission surface is adjusted so that the predetermined light distribution pattern is entirely condensed. The lens body is a lens body having a shape extending along the first reference axis,
The first lens unit includes the first incident surface, the reflective surface, the shade, and the first emission surface,
The second lens unit includes the second entrance surface and the second exit surface,
The first incident surface, the reflecting surface, the shade, the first exit surface, the second entrance surface, and the second exit surface are arranged in this order along the first reference axis,
The first incident surface is a surface on which light from the light source disposed in the vicinity of the first incident surface is refracted and is incident on the inside of the first lens unit, and is from the light source incident on the inside of the first lens unit. At least in the vertical direction passes through the center of the light source and a point in the vicinity of the shade, and converges toward a second reference axis inclined forward and downward with respect to the first reference axis. Is configured to
The reflecting surface extends forward from the lower end edge of the incident surface and is inclined at the predetermined angle with respect to the horizontal in the direction opposite to the second emission surface and the first emission surface in a front view. Arranged in a posture,
The vehicle lamp according to claim 14 or 15, wherein the shade is formed at a tip portion of the reflecting surface. A first light source, a shade, and a first lens portion and a second lens portion arranged along a first reference axis extending in a horizontal direction, and after the light from the light source is partially blocked by the shade, the first The light enters the first lens unit from the first incident surface of the lens unit and exits from the first light exit surface of the first lens unit, and further from the second light incident surface of the second lens unit. A predetermined light distribution pattern including a cut-off line defined by the shade is formed on the upper end edge by being incident on the inside and emitted from the second emission surface of the second lens unit and irradiated forward. In the vehicular lamp provided with the lens body,
The second emission surface is a semi-cylindrical surface extending in a direction inclined with respect to the first reference axis in a top view.
The first emission surface is a vehicular lamp that is a semi-cylindrical surface extending in a vertical direction, and whose surface shape is adjusted so that the predetermined light distribution pattern is entirely condensed. A first light source, a shade, and a first lens portion and a second lens portion arranged along a first reference axis extending in a horizontal direction, and after the light from the light source is partially blocked by the shade, the first The light enters the first lens unit from the first incident surface of the lens unit and exits from the first light exit surface of the first lens unit, and further from the second light incident surface of the second lens unit. A predetermined light distribution pattern including a cut-off line defined by the shade is formed on the upper end edge by being incident on the inside and emitted from the second emission surface of the second lens unit and irradiated forward. In the vehicular lamp provided with the lens body,
The second emission surface is a semi-cylindrical surface extending in a direction inclined by a predetermined angle with respect to the horizontal in a front view,
The first emission surface is a semi-cylindrical surface extending in a direction inclined by the predetermined angle with respect to vertical in a front view;
The said shade is a vehicle lamp arrange | positioned with the attitude | position inclined by the said predetermined angle in the opposite direction with respect to the said 2nd output surface and the said 1st output surface with respect to the horizontal in front view. The second emission surface extends in a direction inclined with respect to the first reference axis when viewed from above.
The vehicular lamp according to claim 18, wherein a surface shape of the first emission surface is adjusted so that the predetermined light distribution pattern is entirely condensed.