JP2014086513A - Lens for light-emitting device, and illumination device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lens for a light-emitting device capable of performing light distribution with gradation.SOLUTION: A lens 1 for a light-emitting device comprises: a lens body 2; and a plate-like fixing member 3. The lens body 2 includes: an incidence plane 2a; and an emission plane 2b. The incidence plane 2a and the emission plane 2b are positioned while opposing each other at a fixed distance interval disposed therebetween. Light from a light-emitting element is made incident to the incidence plane 2a, and incident light is emitted from the emission plane 2b. The plate-like fixing member 3 includes: an incidence plane 3a to which light emitted from the lens body 2 is made incident; and an emission plane 3b which emits incident light. Further, the plate-like fixing member 3 includes: a flange part 3c formed from an edge portion. The lens 1 for the light-emitting device is characterized that, in the state where the incidence plane 3a of the plate-like fixing member 3 opposes the emission plane 2b of the lens body 2 and the flange part 3c of the plate-like fixing member 3 is positioned outside of the emission plane 2b of the lens body 2, the plate-like fixing member 3 is positioned on the emission plane 2b of the lens body 2 and the inside of the plate-like fixing member 3 has light diffusivity.

Description

  The present invention relates to a lens for a light emitting device and an illumination device.

  In recent years, not only conventional incandescent bulbs but also halogen bulbs have begun to be replaced with power-saving and long-life LED bulbs. In the halogen bulb alternative LED bulb, light of an LED having a relatively wide light distribution angle is collected by a lens disposed on the front surface, and a desired light distribution angle (for example, a narrow-angle light distribution type is less than 15 degrees, a medium angle) The light distribution form is 15 degrees or more and less than 30 degrees, and the wide-angle light distribution form is 30 degrees or more and less than 90 degrees) (for example, see Patent Document 1).

Japanese Unexamined Patent Publication No. 60-130001

  When used as store lighting for the purpose of illuminating exhibits, halogen bulb-replacement LED bulbs can be used in places of life in the home. In some cases, a light distribution having gradation is required even at a light distribution angle exceeding a desired angle. This problem becomes a problem not only in LED bulbs but also in lighting devices using organic EL or the like.

  Accordingly, an object of the present invention is to provide a lens for a light emitting device and a lighting device capable of light distribution with gradation.

In order to achieve the above object, the lens for a light emitting device of the present invention comprises:
Including a lens body and a plate-like fixing member,
The lens body includes an entrance surface and an exit surface;
In the lens body, the entrance surface and the exit surface are positioned facing each other at a certain distance, light from a light emitting element enters the entrance surface, and the incident light is the exit surface. Emanating from
The plate-shaped fixing member includes an incident surface on which light emitted from the lens body is incident on one surface of the plate-shaped fixing member, and an emission surface that emits light incident on the other surface of the plate-shaped fixing member Including
Further, the plate-like fixing member includes a flange portion formed from an edge portion of the plate-like fixing member,
In a state where the incident surface of the plate-like fixing member faces the emission surface of the lens body, and in a state where the flange portion of the plate-like fixing member is located outside the emission surface of the lens body, A plate-like fixing member is disposed on the exit surface of the lens body,
The inside of the plate-like fixing member is light diffusing.

The lighting device of the present invention is
Including a light emitting element, a lens for a light emitting device, and a housing;
The lens is the lens of the present invention,
The lens is fixed to the casing by the flange portion.

  According to the present invention, it is possible to provide a lens for a light emitting device and a lighting device capable of gradational light distribution.

FIG. 1A is a plan view showing the lens for a light emitting device of Embodiment 1, FIG. 1B is a front view showing the lens for a light emitting device of Embodiment 1, and FIG. FIG. 1D is a bottom view showing the light emitting device lens of Embodiment 1, FIG. 1D is a perspective view showing the light emitting device lens of Embodiment 1 as viewed from above, and FIG. It is a perspective view which shows the lens for light-emitting devices of Embodiment 1 seen from the downward direction. FIG. 2 is a cross-sectional view illustrating another lens for a light emitting device of the first embodiment. FIG. 3 is a plan view showing still another light emitting device lens of the first embodiment. FIG. 4A is a plan view showing still another light emitting device lens of Embodiment 1, and FIG. 4B is a view in the II direction of the light emitting device lens shown in FIG. FIG. FIG. 5 is a cross-sectional view showing still another light emitting device lens of the first embodiment. FIG. 6 is a cross-sectional view illustrating the movement of light in the lens for a light emitting device according to the first embodiment. FIG. 7 is a photograph showing gradation by the light emitting device lens of the first embodiment. FIG. 8 is a cross-sectional view illustrating the lighting apparatus according to the first embodiment. FIG. 9 is a cross-sectional view illustrating the lens for a light emitting device according to the second embodiment. FIG. 10 is a cross-sectional view for explaining the movement of light in the light emitting device lens of the second embodiment. FIG. 11 is a cross-sectional view illustrating the movement of light in a general light emitting device lens.

  In the lens for a light-emitting device of the present invention, the emission surface of the plate-like fixing member may be convex.

  In the lens for a light emitting device of the present invention, a microlens array may be formed on the emission surface and the flange portion of the plate-like fixing member.

  In the lens for a light emitting device of the present invention, a plurality of concentric irregularities may be formed on the emission surface and the flange portion of the plate-like fixing member.

  In the lens for a light-emitting device of the present invention, unevenness may be formed by applying fine resin powder on the emission surface and the flange portion of the plate-like fixing member.

In the lens for light emitting device of the present invention,
The incident surface of the lens body is formed in a concave shape to arrange a light emitting portion of a light emitting element,
A first incident surface on the concave bottom surface;
A second incident surface on the concave side surface;
Furthermore, the lens body includes a reflective surface that reflects light,
The reflecting surface of the lens body reflects light incident from the second incident surface;
The exit surface of the lens body may emit the light incident from the first incident surface and the light incident from the second incident surface and reflected by the reflective surface.

  In the illumination device of the present invention, it is preferable that the light emitting element is an LED.

  Hereinafter, a lens for a light emitting device and an illumination device of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiments. In addition, in the following FIGS. 1-10, the same code | symbol is attached | subjected to the same part and the description may be abbreviate | omitted. In the drawings, for convenience of explanation, the structure of each part may be simplified as appropriate, and the dimensional ratio of each part may be schematically shown, unlike the actual case.

[Embodiment 1]
FIG. 1A is a plan view showing a lens for a light emitting device according to the present embodiment. FIG. 1B is a front view showing the light emitting device lens of the present embodiment. FIG. 1C is a bottom view showing the lens for a light emitting device of this embodiment. FIG. 1D is a perspective view showing the lens for a light emitting device of the present embodiment as viewed from above. FIG. 1E is a perspective view showing the lens for a light emitting device of the present embodiment as viewed from below. Note that the rear view and both side views of the lens for a light emitting device of the present embodiment are the same as the front view shown in FIG. As shown in FIGS. 1A to 1E, the lens 1 for a light emitting device of the present embodiment includes a lens body 2 and a plate-like fixing member 3. The lens body 2 includes an entrance surface 2a and an exit surface 2b. In the lens body 2, the incident surface 2a and the exit surface 2b are positioned in a state of facing each other at a certain distance, the light from the light emitting element is incident on the entrance surface 2a, and the incident light is the exit surface. The light is emitted from 2b. In FIGS. 1A to 1E, the lens body 2 has a bowl shape, but the light emitting device lens 1 of the present embodiment is not limited to this, and the incident surface 2a and the output surface 2b are at a certain distance from each other. The shape of the lens body 2 is not particularly limited as long as it is positioned facing each other. In the lens body 2, the part other than the incident surface 2 a and the exit surface 2 b is preferably a reflecting surface that substantially totally reflects incident light. The plate-like fixing member 3 includes an incident surface 3a on which light emitted from the lens body 2 is incident on one surface of the plate-like fixing member 3, and emits light incident on the other surface of the plate-like fixing member 3. Includes surface 3b. Further, the plate-like fixing member 3 includes a flange portion 3 c formed from the edge of the plate-like fixing member 3. In the light emitting device lens 1 of the present embodiment, the incident surface 3 a of the plate-like fixing member 3 faces the emission surface 2 b of the lens body 2, and the flange portion 3 c of the plate-like fixing member 3 is the lens body 2. The plate-like fixing member 3 is disposed on the exit surface 2b of the lens body 2 in a state of being located outside the exit surface 2b. As will be described later, the inside of the plate-like fixing member 3 is light diffusing.

  The lens body 2 and the plate-like fixing member 3 are formed of a light transmissive material. Examples of the translucent material include resin materials, glass, ceramics, and the like. Examples of the resin material include polycarbonate (refractive index: 1.59), polymethyl methacrylate (refractive index: 1.48 to 1.76), optical silicone (refractive index: 1.40 to 1.57), Examples thereof include polyolefins. The lens body 2 and the plate-like fixing member 3 are preferably formed of the resin material having a refractive index of 1.4 or more. In addition, optical glass (refractive index: 1.43-1.85) is also suitable as a material for forming the lens body 2 and the plate-like fixing member 3. The lens body 2 and the plate-like fixing member 3 may be formed of the same light-transmitting material or different light-transmitting materials.

  As described above, in the lens 1 for a light emitting device of the present embodiment, the inside of the plate-like fixing member 3 is light diffusing. In the light emitting device lens 1 of the present embodiment, for example, the plate-like fixing member 3 is formed of the light-transmitting material having light diffusibility, so that the inside of the plate-like fixing member 3 has light diffusibility. May be. The method for imparting light diffusibility to the translucent material is not particularly limited. For example, a powder mainly composed of silica, barium carbonate, barium sulfate, titanium oxide or the like is dispersed or precipitated in the translucent material. And the like. Further, the shape of these powders can be spherical or arbitrary polyhedrons, and the light diffusibility can be controlled by molding these powders into a hollow shape. The plate-shaped fixing member 3 may be made light diffusing by a method other than forming the light transmissive material with the light transmissive material.

  In FIGS. 1A to 1E, the lens body 2 and the plate-like fixing member 3 are shown as separate independent members, but the lens 1 for a light-emitting device of the present invention is not limited to this. In the light emitting device lens 1 of the present embodiment, the lens body 2 and the plate-like fixing member 3 may be integrally molded using the same translucent material or different types of translucent materials. As shown in FIGS. 1A to 1E, when the lens body 2 and the plate-like fixing member 3 are separate and independent members, the lens body 2 and the plate-like fixing member 3 are, for example, a transparent adhesive. Can be connected by bonding, fusing, screwing, etc. In the case of screwing, it is preferable to interpose oil or the like that promotes optical contact at the joint between the lens body 2 and the plate-like fixing member 3.

  With reference to FIG. 11, the movement of light in a general lens for a light emitting device will be described. In FIG. 11, for convenience of explanation, in addition to the light emitting device lens 91, a light emitting element 96 is shown, and the parallel oblique lines (hatching) of the light emitting device lens 91 are omitted. As shown in FIG. 11, in a general light emitting device lens 91, a lens body 92 and a plate-like fixing member 93 are integrally molded, and the inside of the plate-like fixing member 93 is not light diffusing. In this general light-emitting device lens 91, most of the light from the light-emitting element 96 is directed toward the exit surface 93b of the plate-like fixing member 93 at the entrance surface 92a of the lens body 92, as indicated by arrows L4a to L4c. The light is refracted and emitted from the emission surface 93b of the plate-like fixing member 93 to the outside of the light emitting device lens 91, but part of the light from the light emitting element 96 is incident on the lens body 2 as indicated by arrows L5a to L5c. The light is refracted toward the flange portion 93c of the plate-like fixing member 93 on the surface 2a, and is totally reflected by the flange portion 93c, and is not emitted outside the lens 91 for the light emitting device. As a result, the general light emitting device lens 91 does not provide a gradational light distribution.

  On the other hand, as shown in FIG. 6, in the light emitting device lens 1 of the present embodiment in which the inside of the plate-shaped fixing member 3 is light diffusive, most of the light from the light emitting element 6 is indicated by arrows L1a to L1c. As shown, the light is refracted toward the plate-like fixing member 3 at the incident surface 2 a of the lens body 2, diffused by the plate-like fixing member 3, and from the light-emitting device lens 1 to the outside of the light-emitting device lens 1. And the light refracted to the flange portion 3c side of the plate-like fixing member 3 on the incident surface 2a of the lens body 2 is also diffused by the plate-like fixing member 3 as shown by arrows L2a to L2c. The light is emitted from the light emitting surface 3b and the flange portion 3c of the fixing member 3 to the outside of the light emitting device lens 1. As a result, according to the lens 1 for a light emitting device of the present embodiment, a light distribution with gradation as shown in FIG. 7 can be obtained. In FIG. 6, for convenience of explanation, the light emitting element 6 is shown in addition to the light emitting device lens 1 of the present embodiment, and the parallel oblique lines (hatching) of the light emitting device lens 1 are omitted. In FIG. 6, when the light L1a is incident on the incident surface 2a of the lens body 2 perpendicularly, the light L1a passes through the incident surface 2a of the lens body 2 as it is. The same applies to each surface of the lens body 2 and the plate-like fixing member 3 except for the flange portion 3 c of the member 3.

  The whole or part of the incident surface 2a of the lens body 2 may be formed into a concavo-convex shape by, for example, frost processing. Thereby, light can be diffused more efficiently inside the plate-like fixing member 3.

  1A to 1E, the plate-like fixing member 3 has a flat plate shape, but the light-emitting device lens 1 of the present embodiment is not limited to this. As shown in FIG. 2, in the lens 1 for light-emitting devices of this embodiment, the output surface 3b of the plate-shaped fixing member 3 may be convex. By making the emission surface 3b of the plate-like fixing member 3 convex, the light distribution of the light emitted to the outside of the light emitting device lens 1 can be further controlled. The exit surface 3b of the plate-like fixing member 3 may be entirely convex, or only part of it may be convex. 1A to 1E, the planar shape of the plate-like fixing member 3 is circular, but the light-emitting device lens 1 of the present embodiment is not limited to this. In the lens 1 for light emitting device of the present embodiment, the planar shape of the plate-like fixing member 3 may be another shape such as an ellipse or a polygon.

  For example, as shown in the plan view of FIG. 3, the light emitting device lens 1 of the present embodiment has an arbitrary shape (for example, a polygonal column shape, a hemispherical shape, etc.) on the emission surface 3 b and the flange portion 3 c of the plate-like fixing member 3. The microlens array may be formed. This makes it possible to give the gradation a desired distribution. In FIG. 3, the microlens array is formed on all of the emission surface 3 b and the flange portion 3 c of the plate-like fixing member 3, but the light emitting device lens 1 of the present embodiment is not limited to this. In the light emitting device lens 1 of the present embodiment, a microlens array may be formed only on a part of the emission surface 3b and the flange portion 3c of the plate-like fixing member 3.

  In addition, the light emitting device lens 1 according to the present embodiment includes, for example, as shown in a plan view of FIG. 4A and a sectional view of FIG. In addition, a plurality of concentric irregularities may be formed. This makes it possible to give the gradation a desired distribution. FIG. 4B is a cross-sectional view of the light emitting device lens 1 shown in FIG. 4A and 4B, a plurality of concentric concavities and convexities are formed on all of the emission surface 3b and the flange portion 3c of the plate-like fixing member 3, but the light emitting device of this embodiment The lens 1 for use is not limited to this. In the lens 1 for light emitting device of the present embodiment, a plurality of concentric irregularities may be formed only on a part of the emission surface 3b and the flange portion 3c of the plate-like fixing member 3.

  And as for the lens 1 for light-emitting devices of this embodiment, as shown in sectional drawing of FIG. 5, for example, the lens main body 2 and the plate-shaped fixing member 3 are integrally molded using the same translucent material, And the unevenness | corrugation by application | coating of the fine powder 4 of resin may be formed in the output surface 3b and the collar part 3c of the plate-shaped fixing member 3. FIG. This makes it possible to give the gradation a desired distribution. When the lens body 2 and the plate-like fixing member 3 are integrally molded using the same light-transmitting material as in this example, the exit surface 2b and the plate of the lens body 2 are shown in FIG. The incident surface 3a of the fixed member 3 does not exist integrally. Examples of the resin include a resin component (polycarbonate, polymethyl methacrylate, optical silicone, polyolefin) in the translucent material, a resin having a different refractive index and transmittance from the resin component, and the like. In FIG. 5, the resin fine powder 4 is distributed with a distribution on the emission surface 3 a and the flange portion 3 c of the plate-like fixing member 3, but the light emitting device lens 1 of the present embodiment is not limited to this. In the lens 1 for a light emitting device of the present embodiment, the resin fine powder 4 may be uniformly applied to the emission surface 3 b and the flange portion 3 c of the plate-like fixing member 3.

  Furthermore, the light emitting device lens 1 of the present embodiment can have a desired distribution in gradation by combining any two or all three of the modes shown in FIGS. 3 to 5, for example. It may be.

  The light emitting device lens 1 of the present embodiment can be used for various light emitting devices such as a lighting device, for example.

  FIG. 8 shows an example of a lighting device using the light emitting device lens 1 of the present embodiment. As shown in FIG. 8, the illumination device 10 of the present embodiment is a light bulb including the light emitting element 6, the light emitting device lens 1 of the present embodiment, and a housing 11. The light emitting device lens 1 of the present embodiment is fixed to the housing 11 by a flange 3c. In FIG. 8, the flange portion 3c of the light emitting device lens 1 of the present embodiment is fixed to the housing 11 with screws 12, but the illumination device 10 of the present embodiment is not limited to this. In the illuminating device 10 of the present embodiment, the method for fixing the brim portion 3c to the housing 11 is not particularly limited, and may be, for example, adhesion using an adhesive, fusion, or the like.

  Examples of the light emitting element 2 include an LED, an organic EL, an inorganic EL, and the like, and an LED is preferable. Although LED is not specifically limited, A conventionally well-known thing can be used, but it is preferable that it is white LED. In FIG. 8, the light emitting element 6 is mounted on a wiring pattern formed on a substrate (not shown) having excellent thermal conductivity, for example, at the bottom of the housing 11. In the illuminating device (light bulb) 10 of the present embodiment, the light emitting element 6 may be included in, for example, a silicone resin, and a phosphor may be dispersed in the silicone resin. In such a form, for example, white light can be obtained by using a light emitting element 6 as a blue LED and the phosphor as a combination of a yellow phosphor or a red / green phosphor. Moreover, white light can also be obtained by using a light emitting element 6 as a near-ultraviolet LED (UV-LED) and using the phosphor as a combination of red, green, and blue phosphors (RGB phosphor). In the lighting device (bulb) 10 of this embodiment shown in FIG. 8, a case in which a lighting circuit or the like is housed is fixed to the outside of the bottom of the housing 11. It is not limited to this example.

[Embodiment 2]
FIG. 9 is a cross-sectional view showing the light emitting device lens of the present embodiment. As shown in FIG. 9, in the lens 1 for a light-emitting device of the present embodiment, the incident surface of the lens body 1 is formed in a concave shape 5 in order to arrange the light-emitting portion of the light-emitting element. The light-emitting device lens according to Embodiment 1 except that the first incident surface 2a1 is included, the second incident surface 2a2 is included on the side surface of the concave shape 5, and the lens body 1 includes a reflection surface 2c that reflects light. Same as 1. In the concave shape 5, the entire light emitting part of the light emitting element may be arranged, or only a part of the light emitting part of the light emitting element may be arranged. Moreover, the light emitting part of one light emitting element may be arrange | positioned at the concave shape 5, and the light emitting part of a some light emitting element may be arrange | positioned. The reflecting surface 2c of the lens body 2 reflects the light incident from the second incident surface 2a2. The exit surface 2b of the lens body 2 emits light incident from the first incident surface 2a1 and light incident from the second incident surface 2a2 and reflected by the reflecting surface 2c.

  With reference to FIG. 10, the movement of light on each surface of the lens 1 for light emitting device of the present embodiment will be described. In FIG. 10, for convenience of explanation, in addition to the light emitting device lens 1 of the present embodiment, a light emitting element 6 is shown, and parallel oblique lines (hatching) of the light emitting device lens 1 are omitted.

  The first incident surface 2a1 has a substantially spherical surface formed so as to be convex toward the light emitting element 6, and refracts the light L1a and L2a incident from the light emitting element 6 toward the emission surface 2b. The second incident surface 2a2 is formed in a tapered shape so that the opening of the concave shape 5 is wider than the bottom surface of the concave shape 5 (first incident surface 2a1), and the light L3a incident from the light emitting element 6 is received. The light is refracted toward the reflecting surface 2c. The reflecting surface 2c has a curved surface that extends from the end of the opening of the concave shape 5 of the second entrance surface 2a2 to the end of the exit surface 2b, and substantially reflects the light incident from the second entrance surface 2a2. It is formed to reflect.

  Most of the light incident on the first incident surface 2a1 of the lens body 2 from the light emitting element 6 is directed toward the plate-like fixing member 3 on the first incident surface 2a1 of the lens body 2 as indicated by arrows L1a to L1c. The light is refracted, diffused by the plate-like fixing member 3, and emitted from the light emitting surface 3 b of the plate-like fixing member 3 to the outside of the light emitting device lens 1. Further, as indicated by arrows L2a to L2c, the light refracted to the flange portion 3c side of the plate-like fixing member 3 on the first incident surface 2a1 of the lens body 2 is also diffused by the plate-like fixing member 3 to form a plate-like shape. The light is emitted from the light emitting surface 3b and the flange portion 3c of the fixing member 3 to the outside of the light emitting device lens 1.

  The light L3a incident on the second incident surface 2a2 of the lens body 2 from the light emitting element 6 is refracted toward the reflecting surface 2c and becomes light L3b. The light L3b is substantially totally reflected by the reflecting surface 2c and becomes light L3c. The light L3c is diffused by the plate-shaped fixing member 3 and is emitted from the light emitting surface 3b of the plate-shaped fixing member 3 to the outside of the light emitting device lens 1 (emitted light L3d). Although not shown, the light reflected by the reflecting surface 2 c of the lens body 2 toward the flange portion 3 c of the plate-like fixing member 3 is also diffused by the plate-like fixing member 3 and emitted from the plate-like fixing member 3. The light is emitted from the surface 3b and the flange portion 3c to the outside of the light emitting device lens 1.

  As a result, the light distribution with the gradation as shown in FIG. 7 can be achieved also by the light emitting device lens 1 of the present embodiment.

  The light emitting device lens 1 of the present embodiment can also be used for various light emitting devices such as the illumination device shown in FIG.

  According to the present invention, it is possible to provide a lens for a light emitting device and a lighting device capable of gradational light distribution. The lens for light emitting device and the illumination device of the present invention can be used for a wide range of applications.

DESCRIPTION OF SYMBOLS 1,91 Light emitting device lens 2, 92 Lens body 2a, 92a Lens body entrance surface 2b Lens body exit surface 3, 93 Plate-like fixing member 3a Plate-like fixing member entrance surface 3b, 93b Plate-like fixing member exit Surface 3c, 93c Plate portion of plate-like fixing member 4 Resin fine particle 5 Concave shape 6, 96 Light emitting element 10 Illuminating device 11 Housing 12 Screw

Claims (8)

Including a lens body and a plate-like fixing member,
The lens body includes an entrance surface and an exit surface;
In the lens body, the entrance surface and the exit surface are positioned facing each other at a certain distance, light from a light emitting element enters the entrance surface, and the incident light is the exit surface. Emanating from
The plate-shaped fixing member includes an incident surface on which light emitted from the lens body is incident on one surface of the plate-shaped fixing member, and an emission surface that emits light incident on the other surface of the plate-shaped fixing member Including
Further, the plate-like fixing member includes a flange portion formed from an edge portion of the plate-like fixing member,
In a state where the incident surface of the plate-like fixing member faces the emission surface of the lens body, and in a state where the flange portion of the plate-like fixing member is located outside the emission surface of the lens body, A plate-like fixing member is disposed on the exit surface of the lens body,
A lens for a light emitting device, wherein the inside of the plate-like fixing member is light diffusive. The lens for a light emitting device according to claim 1, wherein the emission surface of the plate-like fixing member is convex. The lens for light emitting devices according to claim 1 or 2, wherein a microlens array is formed on the emission surface and the flange portion of the plate-like fixing member. The lens for light emitting devices according to any one of claims 1 to 3, wherein a plurality of concentric concavities and convexities are formed on the emission surface and the flange portion of the plate-like fixing member. The lens for light-emitting devices according to any one of claims 1 to 4, wherein irregularities are formed on the emission surface and the brim portion of the plate-like fixing member by application of resin fine powder. The incident surface of the lens body is formed in a concave shape to arrange a light emitting portion of a light emitting element,
A first incident surface on the concave bottom surface;
A second incident surface on the concave side surface;
Furthermore, the lens body includes a reflective surface that reflects light,
The reflecting surface of the lens body reflects light incident from the second incident surface;
The exit surface of the lens body emits the light incident from the first incident surface and the light incident from the second incident surface and reflected by the reflective surface. The lens for light-emitting devices as described in any one. Including a light emitting element, a lens for a light emitting device, and a housing;
The lens is the lens according to any one of claims 1 to 6,
The lighting device, wherein the lens is fixed to the casing by the flange portion. The lighting device according to claim 7, wherein the light emitting element is an LED.