CN113330247A - Vehicle headlamp lens - Google Patents
Vehicle headlamp lens Download PDFInfo
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- CN113330247A CN113330247A CN202080010312.4A CN202080010312A CN113330247A CN 113330247 A CN113330247 A CN 113330247A CN 202080010312 A CN202080010312 A CN 202080010312A CN 113330247 A CN113330247 A CN 113330247A
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- light
- light emitting
- emitting surface
- axis direction
- irradiated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/0006—Arrays
- G02B3/0037—Arrays characterized by the distribution or form of lenses
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The present invention relates to a headlamp lens for a vehicle, the headlamp lens according to an embodiment of the present invention includes: a light incident surface to which light from a light source is incident; and a plurality of light emitting surfaces which emit light incident from the light incident surface, wherein the plurality of light emitting surfaces may have different focal positions from each other. According to the present invention, it is possible to have an effect of minimizing loss of light emitted from a light source by using the principle of Etendue (Etendue), and adjusting a light distribution pattern in which light is emitted toward the outside by a lens.
Description
Technical Field
The present invention relates to a vehicle headlamp lens, and more particularly, to a vehicle headlamp lens for a vehicle headlamp.
Background
A vehicle is equipped with headlamps for traveling at night. The headlamp is an illumination lamp for illuminating light forward at night to illuminate the road on which the vehicle is traveling, and is configured to be able to illuminate approximately 100m forward. The distance and range of light to be irradiated from the headlamps are different depending on standards stipulated by each country.
Existing headlamps are typically manufactured in four ways. The light beam emitted from the light source is reflected by a reflecting surface having a paraboloid and is irradiated toward the front of the vehicle, and the light beam emitted from the light source is irradiated toward the front of the vehicle through an aspherical lens. Further, a manner of allowing light emitted from the light source to pass through an aspherical lens and then to be reflected by a reflective surface to compensate for light lost from the light source and improve light efficiency is included. Further, there is a method in which light emitted from the light source is reflected by a reflection surface having an elliptical shape so that a part of the light passes through a focal point having a shield, and the remaining light is blocked and irradiated toward the front of the vehicle through the projection lens again.
As described above, the conventional head lamp uses a light source capable of irradiating light in a 360-degree direction, such as a halogen lamp or a xenon lamp, and thus has a problem that the structure thereof becomes complicated only in order to reduce loss of light by using a reflection surface.
Further, the headlamp of the vehicle needs to prevent light from being irradiated above a predetermined height. For this reason, in the related art, a separate barrier plate is used, and thus there is a problem that the structure of the head lamp becomes complicated.
Disclosure of Invention
Technical problem
The present invention is directed to provide a vehicle headlamp lens that can simplify the structure of a headlamp and improve the efficiency of a vehicle headlamp as compared to the related art.
Technical scheme
A headlamp lens according to an embodiment of the present invention includes: a light incident surface to which light from a light source is incident; and a plurality of light emitting surfaces which emit light incident from the light incident surface, wherein the plurality of light emitting surfaces have different focal positions, and the plurality of light emitting surfaces may be respectively formed as free curved surfaces.
In each of the plurality of light exit surfaces formed as the free-form surface, a curvature of a curved surface constituting each of the plurality of light exit surfaces may not be constant.
The light emitted through the plurality of light emitting surfaces may be irradiated on a region partially overlapping each other.
Some of the light emitted through the plurality of light-emitting surfaces may irradiate the same region.
The light emitted through the plurality of light emitting surfaces may be irradiated on different regions from each other.
The light emitted through one or more light emitting surfaces arranged at the center among the plurality of light emitting surfaces may be irradiated on all regions in the left-right direction among regions irradiated with the light emitted through the plurality of light emitting surfaces.
The one or more light emitting surfaces arranged outside the one or more light emitting surfaces arranged at the center among the plurality of light emitting surfaces may have a step difference from the one or more light emitting surfaces arranged at the center, and may be arranged to protrude from the one or more light emitting surfaces arranged at the center.
The maximum height of the light incident surface and the one or more light exit surfaces disposed at the center among the plurality of light exit surfaces may be greater than the maximum height of the light incident surface and the one or more light exit surfaces disposed at the outer side of the one or more light exit surfaces disposed at the center.
The light emitted from one or more light-emitting surfaces among the plurality of light-emitting surfaces irradiates a region of 0 degree or more in the y-axis direction, and the light emitted from the remaining light-emitting surfaces among the plurality of light-emitting surfaces irradiates only a region of 0 degree or less in the y-axis direction.
The one or more light exit surfaces, which allow light to exit as a region that irradiates at least 0 degree in the y-axis direction, among the plurality of light exit surfaces, may be arranged at outer edges of the plurality of light exit surfaces.
The light incident surface may be formed as one surface.
The light incident surface may be a plane.
The method can also comprise the following steps: and the side faces are connected with the light incident face and the light emergent faces.
The size of one or more light emitting surfaces arranged outside of one or more light emitting surfaces arranged at the center among the plurality of light emitting surfaces may be smaller than the size of the one or more light emitting surfaces arranged at the center.
For the light emitted through the light emitting surfaces, the area for irradiating light along the x-axis direction is relatively larger than the area for irradiating light along the y-axis direction, wherein the width of the light incident surface in the x-axis direction may be larger than the width of the light incident surface in the y-axis direction.
The light emitted through the plurality of light output surfaces may be larger in light quantity in a region irradiated with 0 degrees or more with respect to 0 degrees in the x-axis direction than in a region irradiated with 0 degrees or less.
The plurality of light emitting surfaces can be twenty-four.
The plurality of light emitting surfaces may be respectively formed in a quadrangular shape.
The overall shape of the light emitting surfaces may be formed in a quadrangular shape, wherein the quadrangular shape is formed such that a transverse length is longer than a longitudinal length.
The ratio of the lateral length to the longitudinal length of the quadrilateral shape may be 1.2: 1.
technical effects
According to the present invention, there is an effect that loss of light emitted from a light source is minimized by utilizing the principle of etendue (etendue), and a light distribution pattern of light emitted toward the outside can be adjusted by a lens.
Further, there are effects that the size of the lens for a headlamp of a vehicle can be minimized and the light efficiency can be improved even if the size of the lens is minimized.
Further, since a lens having a size smaller than that of a lens or a reflecting surface used in the related art headlamp is used, the headlamp can be configured with a minimum structure, thereby having an effect of minimizing the cost of the headlamp.
Drawings
Fig. 1 is a plan view illustrating a head lamp lens according to an embodiment of the present invention.
Fig. 2 is a perspective view illustrating a head lamp lens according to an embodiment of the present invention.
Fig. 3 is a perspective view illustrating another angle of a head lamp lens according to an embodiment of the present invention.
Fig. 4 is a front view illustrating a head lamp lens according to an embodiment of the present invention.
Fig. 5 is a left side view illustrating a head lamp lens according to an embodiment of the present invention.
Fig. 6a to 6c are graphs showing simulation results of light emitted through a head lamp lens according to an embodiment of the present invention.
Fig. 7 to 10 are diagrams showing simulation results of light emitted through each of the faces of the headlamp lens according to an embodiment of the present invention.
Description of reference numerals:
100: lens 10: light emitting surface
11a, 11b, 11c, 11d, 11e, 11 f: from the 1 st-1 st light emitting surface to the 1 st-6 th light emitting surface
12a, 12b, 12c, 12d, 12e, 12 f: from the 2 nd light-emitting surface to the 6 th light-emitting surface
13a, 13b, 13c, 13d, 13e, 13 f: from the 3 rd light-emitting surface to the 3 rd-6 th light-emitting surface
14a, 14b, 14c, 14d, 14e, 14 f: from the 4 th-1 st light emitting surface to the 4 th-6 th light emitting surface
20: light incident surface 32, 34, 36, 38: first side to fourth side
Detailed Description
Preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.
Fig. 1 is a plan view illustrating a head lamp lens according to an embodiment of the present invention, and fig. 2 is a perspective view illustrating the head lamp lens according to the embodiment of the present invention. And, fig. 3 is a perspective view illustrating another angle of the head lamp lens according to an embodiment of the present invention, and fig. 4 is a front view illustrating the head lamp lens according to an embodiment of the present invention. Fig. 5 is a left side view illustrating a head lamp lens according to an embodiment of the present invention.
Referring to fig. 1 to 5, a headlamp lens 100 according to an embodiment of the present invention includes: a 1 st-1 light emitting surface 11a, a 1 st-2 light emitting surface 11b, a 1 st-3 light emitting surface 11c, a 1 st-4 light emitting surface 11d, a 1 st-5 light emitting surface 11e, a 1 st-6 light emitting surface 11f, a 2 st-1 light emitting surface 12a, a 2 nd-2 light emitting surface 12b, a 2 nd-3 light emitting surface 12c, a 2 nd-4 light emitting surface 12d, a 2 nd-5 light emitting surface 12e, a 2 nd-6 light emitting surface 12f, a 3 rd-1 light emitting surface 13a, a 3 rd-2 light emitting surface 13b, a 3 rd-3 light emitting surface 13c, a 3 rd-4 th light emitting surface 13d, a 3 rd-5 th light emitting surface 13e, a 3 rd-6 th light emitting surface 13f, a 4 th-1 light emitting surface 14a, a 4 th-2 light emitting surface 14b, a 4 th-3 rd light emitting surface 14c, a 4 th-4 th light emitting surface 14d, The 4 th to 5 th light emitting surfaces 14e, the 4 th to 6 th light emitting surfaces 14f, the light incident surface 20, the first side surface 32, the second side surface 34, the third side surface 36 and the fourth side surface 38.
The 1 st-1 st outgoing surface 11a to the 1 st-6 th outgoing surface 11f, the 2 nd-1 st outgoing surface 12a to the 2 nd-6 th outgoing surface 12f, the 3 st-1 st outgoing surface 13a to the 3 th-6 th outgoing surface 13f, and the 4 th-1 st outgoing surface 14a to the 4 th-6 th outgoing surface 14f have different surfaces, respectively, and are surfaces from which light incident on the lens 100 through the light incident surface 20 is emitted to the outside. As shown in fig. 1 to 5, the light emitting surface 10 according to the present embodiment may have a curved surface shape with a height highest at the center and becoming lower toward the side surface as a whole.
At this time, the 1 st-1 st light emitting surface 11a to the 1 st-6 th light emitting surface 11f, the 2 nd-1 st light emitting surface 12a to the 2 nd-6 th light emitting surface 12f, the 3 st-1 st light emitting surface 13a to the 3 rd-6 th light emitting surface 13f, and the 4 th-1 st light emitting surface 14a to the 4 th-6 th light emitting surface 14f may be arranged substantially along rows and columns, and the entirety of the 1 st-1 st light emitting surface 11a to the 1 st-6 th light emitting surface 11f, the 2 nd-1 st light emitting surface 12a to the 2 th-6 th light emitting surface 12f, the 3 st-1 st light emitting surface 13a to the 3 th-6 th light emitting surface 13f, and the 4 th-1 st light emitting surface 14a to the 4 th-6 th light emitting surface 14f arranged along the rows and columns may form one light emitting surface 10.
Moreover, the 1 st-1 st outgoing surface 11a to the 1 st-6 th outgoing surface 11f, the 2 nd-1 st outgoing surface 12a to the 2 nd-6 th outgoing surface 12f, the 3 st-1 st outgoing surface 13a to the 3 rd-6 th outgoing surface 13f, and the 4 th-1 st outgoing surface 14a to the 4 th-6 th outgoing surface 14f may be respectively formed as free curved surfaces. The free-form surface is a curved surface in which the curvature of the surface constituting the curved surface is not constant. That is, each of the faces constituting the light emitting face 10 does not have a predetermined curvature, respectively, and the curvatures are different from each other in such a manner that light is irradiated in a desired shape toward a desired position. In other words, the curvatures of the faces may be different from each other at a position adjacent to one light exit face.
In the embodiment, the 1 st-1 st outgoing surface 11a to the 1 st-6 th outgoing surface 11f, the 2 nd-1 st outgoing surface 12a to the 2 nd-6 th outgoing surface 12f, the 3 st-1 st outgoing surface 13a to the 3 th-6 th outgoing surface 13f, and the 4 th-1 st outgoing surface 14a to the 4 th-6 th outgoing surface 14f may have different focal points. That is, the lights emitted through the 1 st-1 st outgoing surface 11a to the 1 st-6 th outgoing surface 11f, the 2 nd-1 st outgoing surface 12a to the 2 nd-6 th outgoing surface 12f, the 3 st-1 st outgoing surface 13a to the 3 th-6 th outgoing surface 13f, and the 4 th-1 st outgoing surface 14a to the 4 th-6 th outgoing surface 14f can be respectively irradiated to different positions.
In the plan view shown in fig. 1, the 1 st-1 st light emitting surface 11a to the 1 st-6 th light emitting surface 11f are arranged on the upper side (in the present embodiment, defined as being located on the upper side as the value in the y-axis direction is larger). And, the 1 st-1 st light emitting surface 11a to the 1 st-6 th light emitting surface 11f are respectively arranged at the center with the 1 st-3 rd light emitting surface 11c and the 1 st-4 th light emitting surface 11d, the 1 st-2 st light emitting surface 11b and the 1 st-1 st light emitting surface 11a are sequentially arranged at the left side of the 1 st-3 th light emitting surface 11c, and the 1 st-5 th light emitting surface 11e and the 1 st-6 th light emitting surface 11f are sequentially arranged at the right side of the 1 st-4 th light emitting surface 11d (in this embodiment, it is defined that the larger the value along the x-axis direction is, the more the right side is, and the smaller the value along the x-axis direction is, the more the left side is).
At this time, the 1 st-2 nd light emitting surface 11b is disposed to be a surface protruded than the 1 st-3 rd light emitting surface 11c, and the 1 st-1 st light emitting surface 11a is disposed to be a surface protruded than the 1 st-2 nd light emitting surface 11 b. And, the 1 st to 5 th light emitting surface 11e is arranged to be a surface protruded from the 1 st to 4 th light emitting surface 11d, and the 1 st to 6 th light emitting surface 11f is arranged to be a surface protruded from the 1 st to 5 th light emitting surface 11 e. That is, the light exit surface is arranged in a more protruding state toward both sides in the x-axis direction than the light exit surface arranged at the center.
In addition, the size of the light exit surface may be smaller toward both sides in the x-axis direction than the light exit surface arranged at the center. That is, the size of the 1 st-3 rd light emitting surface 11c disposed at the center may be relatively largest, and the sizes of the 1 st-2 nd light emitting surface 11b and the 1 st-1 st light emitting surface 11a are sequentially decreased. And, the size of the 1 st to 4 th light emitting surface 11d disposed at the center is relatively largest, and the sizes of the 1 st to 5 th light emitting surface 11e and the 1 st to 6 th light emitting surface 11f are sequentially decreased.
In the plan view shown in fig. 1, the 2-1 st light emitting surface 12a to the 2-6 th light emitting surface 12f are arranged at the lower portion of the 1-1 st light emitting surface 11a to the 1-6 th light emitting surface 11 f. In addition, the 2 nd-1 st light emitting surface 12a to the 2 nd-6 th light emitting surface 12f, the 2 nd-3 rd light emitting surface 12c and the 2 nd-4 th light emitting surface 12d are respectively arranged at the center, the 2 nd-2 nd light emitting surface 12b and the 2 nd-1 st light emitting surface 12a are sequentially arranged at the left side of the 2 nd-3 th light emitting surface 12c, and the 2 nd-5 th light emitting surface 12e and the 2 nd-6 th light emitting surface 12f are sequentially arranged at the right side of the 2 nd-4 th light emitting surface 12 d.
At this time, the 2 nd-2 nd light emitting surface 12b is disposed to be protruded from the 2 nd-3 rd light emitting surface 12c, and the 2 nd-1 st light emitting surface 12a is disposed to be protruded from the 2 nd-2 nd light emitting surface 12 b. Also, the 2 nd to 5 th light emitting surface 12e is arranged to be a surface protruded from the 2 nd to 4 th light emitting surface 12d, and the 2 nd to 6 th light emitting surface 12f is arranged to be a surface protruded from the 2 nd to 5 th light emitting surface 12 e. That is, the light exit surface is arranged in a more protruding state toward both sides in the x-axis direction than the light exit surface arranged at the center.
In addition, the size of the light exit surface may be smaller toward both sides in the x-axis direction than the light exit surface arranged at the center. That is, the size of the 2 nd-3 nd light emitting surface 12c disposed at the center is relatively largest, and the sizes of the 2 nd-2 nd light emitting surface 12b and the 2 nd-1 st light emitting surface 12a are sequentially decreased. And, the size of the 2 nd to 4 th light emitting surface 12d arranged at the center is relatively largest, and the sizes of the 2 nd to 5 th light emitting surface 12e and the 2 nd to 6 th light emitting surface 12f are sequentially reduced.
In the plan view shown in fig. 1, the 3-1 st light emitting surface 13a to the 3-6 th light emitting surface 13f are arranged at the lower portion of the 2-1 st light emitting surface 12a to the 2-6 th light emitting surface 12 f. In addition, the 3 rd-1 light emitting surface 13a to the 3 rd-6 light emitting surface 13f, the 3 rd-3 light emitting surface 13c and the 3 rd-4 light emitting surface 13d are respectively arranged at the center, the 3 rd-2 light emitting surface 13b and the 3 rd-1 light emitting surface 13a are sequentially arranged at the left side of the 3 rd-3 light emitting surface 13c, and the 3 rd-5 light emitting surface 13e and the 3 rd-6 light emitting surface 13f are sequentially arranged at the right side of the 3 rd-4 light emitting surface 13 d.
At this time, the 3-2 nd light emitting surface 13b is disposed to be a surface protruded than the 3-3 rd light emitting surface 13c, and the 3-1 st light emitting surface 13a is disposed to be a surface protruded than the 3-2 nd light emitting surface 13 b. Also, the 3 rd to 5 th light emitting surface 13e is disposed to be a surface protruded from the 3 rd to 4 th light emitting surface 13d, and the 3 rd to 6 th light emitting surface 13f is disposed to be a surface protruded from the 3 rd to 5 th light emitting surface 13 e. That is, the light exit surface is arranged in a more protruding state toward both sides in the x-axis direction than the light exit surface arranged at the center.
In addition, the size of the light exit surface may be smaller toward both sides in the x-axis direction than the light exit surface arranged at the center. That is, the size of the 3 rd-3 rd light emitting surface 13c disposed at the center is relatively largest, and the sizes of the 3 rd-2 nd light emitting surface 13b and the 3 rd-1 st light emitting surface 13a are sequentially decreased. And, the size of the 3 rd to 4 th light emitting surface 13d disposed at the center is relatively largest, and the sizes of the 3 rd to 5 th light emitting surface 13e and the 3 rd to 6 th light emitting surface 13f are sequentially reduced.
In the plan view shown in fig. 1, the 4-1 th to 4-6 th light emitting surfaces 14a to 14f are arranged at the lower portions of the 3-1 th to 3-6 th light emitting surfaces 13a to 13 f. In addition, the 4 th-1 st light emitting surface 14a to the 4 th-6 th light emitting surface 14f, the 4 th-3 rd light emitting surface 14c and the 4 th-4 th light emitting surface 14d are respectively arranged at the center, the 4 th-2 nd light emitting surface 14b and the 4 th-1 st light emitting surface 14a are sequentially arranged at the left side of the 4 th-3 th light emitting surface 14c, and the 4 th-5 th light emitting surface 14e and the 4 th-6 th light emitting surface 14f are sequentially arranged at the right side of the 4 th-4 th light emitting surface 14 d.
At this time, the 4-2 nd light emitting surface 14b is disposed to be a surface protruded than the 4-3 rd light emitting surface 14c, and the 4-1 st light emitting surface 14a is disposed to be a surface protruded than the 4-2 nd light emitting surface 14 b. Also, the 4 th-5 th light emitting surface 14e is arranged to be a surface protruded from the 4 th-4 th light emitting surface 14d, and the 4 th-6 th light emitting surface 14f is arranged to be a surface protruded from the 4 th-5 th light emitting surface 14 e. That is, the light exit surface is arranged in a more protruding state toward both sides in the x-axis direction than the light exit surface arranged at the center.
In addition, the size of the light exit surface may be smaller toward both sides in the x-axis direction than the light exit surface arranged at the center. That is, the size of the 4 th-3 th light emitting surface 14c disposed at the center is relatively largest, and the sizes of the 4 th-2 nd light emitting surface 14b and the 4 th-1 st light emitting surface 14a are sequentially decreased. And, the size of the 4 th-4 th light emitting surface 14d disposed at the center is relatively largest, and the sizes of the 4 th-5 th light emitting surface 14e and the 4 th-6 th light emitting surface 14f are sequentially reduced.
Further, in the plan view shown in FIG. 1, the 1 st-1 st light emitting surface 11a, the 2 nd-1 st light emitting surface 12a, the 3 rd-1 st light emitting surface 13a, and the 4 th-1 st light emitting surface 14a are arranged on the left side. Also, the 2-1 st light emitting surface 12a and the 3-1 st light emitting surface 13a are disposed at the center in the y-axis direction, the 1-1 st light emitting surface 11a is disposed at the lower portion of the 2-1 st light emitting surface 12a, and the 4-1 st light emitting surface 14a is disposed at the upper portion of the 3-1 st light emitting surface 13 a. At this time, the 1 st-1 st light emitting surface 11a is disposed to be protruded than the 2 nd-1 st light emitting surface 12a, and the 4 th-1 st light emitting surface 14a is disposed to be protruded than the 3 rd-1 st light emitting surface 13 a. Here, the light exit surface is arranged in a more protruding state toward both sides in the y-axis direction than the light exit surface arranged at the center.
Also, the size of the 2-1 st light emitting surface 12a may be relatively larger than the size of the 1-1 st light emitting surface 11a, and the size of the 3-1 st light emitting surface 13a may be relatively larger than the size of the 4-1 st light emitting surface 14 a.
In the plan view shown in fig. 1, the 1 st-2 nd light emitting surface 11b, the 2 nd-2 nd light emitting surface 12b, the 3 nd-2 nd light emitting surface 13b, and the 4 th-2 nd light emitting surface 14b are arranged on the right side of the 1 st-1 st light emitting surface 11a, the 2 nd-1 st light emitting surface 12a, the 3 rd-1 st light emitting surface 13a, and the 4 th-1 st light emitting surface 14 a. The 2 nd-2 nd light emitting surface 12b and the 3 rd-2 nd light emitting surface 13b are arranged at the center in the y-axis direction, the 1 st-2 nd light emitting surface 11b is arranged at the lower portion of the 2 nd-2 nd light emitting surface 12b, and the 4 th-2 nd light emitting surface 14b is arranged at the upper portion of the 3 rd-2 nd light emitting surface 13 b. At this time, the 1 st-2 nd light emitting surface 11b is disposed to be protruded surface than the 2 nd-2 nd light emitting surface 12b, and the 4 th-2 nd light emitting surface 14b is disposed to be protruded surface than the 3 rd-2 nd light emitting surface 13 b. Here, the light exit surface is arranged in a more protruding state toward both sides in the y-axis direction than the light exit surface arranged at the center.
Also, the size of the 2 nd-2 nd light emitting surface 12b may be relatively larger than the size of the 1 st-2 nd light emitting surface 11b, and the size of the 3 rd-2 nd light emitting surface 13b may be relatively larger than the size of the 4 th-2 nd light emitting surface 14 b.
In the plan view shown in fig. 1, the 1 st-3 rd light emitting surface 11c, the 2 nd-3 rd light emitting surface 12c, the 3 rd-3 rd light emitting surface 13c, and the 4 th-3 rd light emitting surface 14c are disposed on the right side of the 1 st-2 nd light emitting surface 11b, the 2 nd-2 nd light emitting surface 12b, the 3 rd-2 nd light emitting surface 13b, and the 4 th-2 nd light emitting surface 14 b. The 2 nd-3 rd light emitting surface 12c and the 3 rd-3 rd light emitting surface 13c are disposed at the center in the y-axis direction, the 1 st-3 rd light emitting surface 11c is disposed at the lower portion of the 2 nd-3 rd light emitting surface 12c, and the 4 th-3 rd light emitting surface 14c is disposed at the upper portion of the 3 rd-3 rd light emitting surface 13 c. At this time, the 1 st-3 rd light emitting surface 11c is disposed to be protruded from the 2 nd-3 rd light emitting surface 12c, and the 4 th-3 rd light emitting surface 14c is disposed to be protruded from the 3 rd-3 rd light emitting surface 13 c. Here, the light exit surface is arranged in a more protruding state toward both sides in the y-axis direction than the light exit surface arranged at the center.
Also, the size of the 2 nd-3 rd light emitting surface 12c may be relatively larger than the size of the 1 st-3 rd light emitting surface 11c, and the size of the 3 rd-3 rd light emitting surface 13c may be relatively larger than the size of the 4 th-3 rd light emitting surface 14 c.
In the plan view shown in fig. 1, the 1 st-4 th light emitting surface 11d, the 2 nd-4 th light emitting surface 12d, the 3 rd-4 th light emitting surface 13d, and the 4 th-4 th light emitting surface 14d are disposed on the right side of the 1 st-3 th light emitting surface 11c, the 2 nd-3 th light emitting surface 12c, the 3 rd-3 th light emitting surface 13c, and the 4 th-3 th light emitting surface 14 c. The 2 nd to 4 th light emitting surfaces 12d and the 3 th to 4 th light emitting surfaces 13d are arranged at the center in the y-axis direction, the 1 st to 4 th light emitting surface 11d is arranged at the lower part of the 2 nd to 4 th light emitting surface 12d, and the 4 th to 4 th light emitting surface 14d is arranged at the upper part of the 3 th to 4 th light emitting surface 13 d. At this time, the 1 st to 4 th light emitting surface 11d is disposed to be protruded surface than the 2 nd to 4 th light emitting surface 12d, and the 4 th to 4 th light emitting surface 14d is disposed to be protruded surface than the 3 rd to 4 th light emitting surface 13 d. Here, the light exit surface is arranged in a more protruding state toward both sides in the y-axis direction than the light exit surface arranged at the center.
Moreover, the size of the 2 nd-4 th light emitting surface 12d may be relatively larger than the size of the 1 st-4 th light emitting surface 11d, and the size of the 3 rd-4 th light emitting surface 13d may be relatively larger than the size of the 4 th-4 th light emitting surface 14 d.
In the plan view shown in fig. 1, the 1 st-5 th light emitting surface 11e, the 2 nd-5 th light emitting surface 12e, the 3 rd-5 th light emitting surface 13e, and the 4 th-5 th light emitting surface 14e are disposed on the right side of the 1 st-4 th light emitting surface 11d, the 2 nd-4 th light emitting surface 12d, the 3 rd-4 th light emitting surface 13d, and the 4 th-4 th light emitting surface 14 d. The 2 nd-5 th light emitting surface 12e and the 3 rd-5 th light emitting surface 13e are arranged in the center along the y-axis direction, the 1 st-5 th light emitting surface 11e is arranged at the lower part of the 2 nd-5 th light emitting surface 12e, and the 4 th-5 th light emitting surface 14e is arranged at the upper part of the 3 rd-5 th light emitting surface 13 e. At this time, the 1 st to 5 th light emitting surface 11e is disposed to be protruded from the 2 nd to 5 th light emitting surface 12e, and the 4 th to 5 th light emitting surface 14e is disposed to be protruded from the 3 rd to 5 th light emitting surface 13 e. Here, the light exit surface is arranged in a more protruding state toward both sides in the y-axis direction than the light exit surface arranged at the center.
Moreover, the size of the 2 nd-5 th light emitting surface 12e may be relatively larger than the size of the 1 st-5 th light emitting surface 11e, and the size of the 3 rd-5 th light emitting surface 13e may be relatively larger than the size of the 4 th-5 th light emitting surface 14 e.
In the plan view shown in fig. 1, the 1 st-6 th light emitting surface 11f, the 2 nd-6 th light emitting surface 12f, the 3 rd-6 th light emitting surface 13f, and the 4 th-6 th light emitting surface 14f are arranged on the right side of the 1 st-5 th light emitting surface 15e, the 2 nd-5 th light emitting surface 12e, the 3 rd-5 th light emitting surface 13e, and the 4 th-5 th light emitting surface 14 e. The 2 nd to 6 th light emitting surfaces 12f and the 3 rd to 6 th light emitting surfaces 13f are arranged in the center along the y-axis direction, the 1 st to 6 th light emitting surfaces 11f are arranged at the lower part of the 2 nd to 6 th light emitting surfaces 12f, and the 4 th to 6 th light emitting surfaces 14f are arranged at the upper part of the 3 rd to 6 th light emitting surfaces 13 f. At this time, the 1 st to 6 th light emitting surfaces 11f are arranged to be protruded surfaces than the 2 nd to 6 th light emitting surfaces 12f, and the 4 th to 6 th light emitting surfaces 14f are arranged to be protruded surfaces than the 3 rd to 6 th light emitting surfaces 13 f. Here, the light exit surface is arranged in a more protruding state toward both sides in the y-axis direction than the light exit surface arranged at the center.
Moreover, the size of the 2 nd to 6 th light emitting surfaces 12f can be relatively larger than the size of the 1 st to 6 th light emitting surfaces 11f, and the size of the 3 rd to 6 th light emitting surfaces 13f can be relatively larger than the size of the 4 th to 6 th light emitting surfaces 14 f.
That is, as shown in fig. 1 to 5, the 1 st-1 st to 1 st-6 th light emitting surfaces 11a to 11f, the 2 st-1 st to 2-6 th light emitting surfaces 12a to 12f, the 3-1 st to 3-6 th light emitting surfaces 13a to 13f, and the 4-1 st to 4-6 th light emitting surfaces 14a to 14f respectively have different surfaces, and the light emitting surfaces arranged on the outer sides in the x-axis and y-axis directions are arranged to be protruded than the light emitting surfaces arranged on the center side, compared to the light emitting surface arranged at the center of the lens 100.
In the present embodiment, the 2 nd to 3 rd light emitting surface 12c, the 2 nd to 4 th light emitting surface 12d, the 3 rd to 3 rd light emitting surface 13c, and the 3 rd to 4 th light emitting surface 13d are disposed at the center of the light emitting surface 10 of the lens 100, and the light emitting surfaces at the outer sides in the x-axis and y-axis directions are disposed as relatively protruded surfaces. At this time, the 2 nd to 3 rd light emitting surface 12c, the 2 nd to 4 th light emitting surface 12d, the 3 rd to 3 rd light emitting surface 13c, and the 3 th to 4 th light emitting surface 13d may not protrude from each other, and a portion may be a surface protruding from a relatively adjacent light emitting surface according to circumstances.
As shown in fig. 4, the light incident surface 20 is disposed on the lower surface of the lens 100. In this embodiment, the light incident surface 20 may be formed as one surface on the same plane. However, the light incident surface 20 is not limited to this, and may be formed as a curved surface.
The first side surface 32, the second side surface 34, the third side surface 36 and the fourth side surface 38 connect the light incident surface 20 and the light emitting surface 10. The first side surface 32 connects the light incident surface 20 and the 4 th-1 st light emitting surface 14a to the 4 th-6 th light emitting surface 14f, and the second side surface 34 connects the light incident surface 20 and the 1 st-1 st light emitting surface 11a, the 2 st-1 st light emitting surface 12a, the 3 st-1 st light emitting surface 13a, and the 4 th-1 st light emitting surface 14 a. The third side surface 36 connects the light incident surface 20 with the 1 st-6 th light emitting surface 11f, the 2 nd-6 th light emitting surface 12f, the 3 rd-6 th light emitting surface 13f, and the 4 th-6 th light emitting surface 14f, and the fourth side surface 38 connects the light incident surface 20 with the 1 st-1 st light emitting surface 11a to the 1 st-6 th light emitting surface 11 f.
In this case, the first side surface 32, the second side surface 34, the third side surface 36, and the fourth side surface 38 may be formed of the same plane, but may be formed of surfaces that are different from each other and are joined to each other, if necessary. In the present embodiment, the first side 32 may be formed of six faces, the second side 34 may be formed of four faces, the third side 36 may be formed of four faces, and the fourth side 38 may be formed of six faces.
Referring to fig. 3, the light emitting surface 10 is formed as a curved surface having the highest height at the center and the lower height toward the side surface as a whole, and is formed of a plurality of surfaces and arranged in a state where the light emitting surface arranged on the side surface is protruded from the light emitting surface arranged on the center side as described above. Even so, the height h of the light emitting surface disposed at the center at the centers of the 3 rd to 3 rd light emitting surface 13c and the 3 rd to 4 th light emitting surface 13d may be higher than other positions.
In addition, in the present embodiment, the 1 st-1 st outgoing surface 11a to the 1 st-6 th outgoing surface 11f, the 2 nd-1 st outgoing surface 12a to the 2 nd-6 th outgoing surface 12f, the 3 st-1 st outgoing surface 13a to the 3 rd-6 th outgoing surface 13f, and the 4 th-1 st outgoing surface 14a to the 4 th-6 th outgoing surface 14f, which are the surfaces constituting the outgoing surface 10, are respectively formed as curved surfaces. Therefore, the 1 st-1 st outgoing surface 11a to the 1 st-6 th outgoing surface 11f, the 2 nd-1 st outgoing surface 12a to the 2 nd-6 th outgoing surface 12f, the 3 st-1 st outgoing surface 13a to the 3 th-6 th outgoing surface 13f, and the 4 th-1 st outgoing surface 14a to the 4 th-6 th outgoing surface 14f may have different focal points from each other, respectively.
Also, referring back to fig. 1, in the present embodiment, the light emitting surface 10 may be formed to have a length in the x-axis direction longer than that in the y-axis direction. In this case, if the x-axis direction is defined as a lateral direction and the y-axis direction is defined as a longitudinal direction, the lateral length of the light emitting surface 10 may be formed to be longer than the longitudinal length. The transverse length of the light emitting surface 10 according to the present embodiment may be about 48mm, and the longitudinal length may be about 40 mm. Therefore, the ratio of the transverse length to the longitudinal length of the light emitting surface 10 can be 1.2: 1.
fig. 6a to 6c are graphs showing simulation results of light emitted through a headlamp lens according to an embodiment of the present invention.
According to the headlamp lens 100 of an embodiment of the present invention, most of the light emitted from the light source may be incident through the light incident surface 20. In the present embodiment, the light source may utilize a light emitting diode, and the pointing angle of light emitted from the light emitting diode may have an angle of about 120 degrees. Therefore, almost all of the light emitted from the light emitting diode can enter the lens 100 through the light incident surface 20 of the lens 100.
As shown in fig. 6a, the light incident to the headlamp lens 100 like this can be emitted toward the front of the vehicle. The emitted light is not emitted toward the upper left portion, but a part of the light may be emitted toward the upper right portion. This is because the sidewalk is located on the right side in the vehicle traveling direction, and since there is a vehicle traveling on the opposite surface on the left side, light can be made not to reach the oncoming vehicle on the left side, but can reach the sidewalk side on the right side.
Referring to fig. 6b, it can be confirmed that the range in which light is emitted from the headlamp lens 100 according to the present embodiment is such that light is emitted in the left-right direction at an angle having about 40 degrees with reference to the headlamp lens 100. Further, it was confirmed that the light travels relatively farther in the right direction than in the left direction with reference to the headlamp lens 100.
Further, fig. 6c is a diagram showing the distribution of light at a position 25m away from the headlamp lens 100 due to light emitted through the headlamp lens 100 according to the present embodiment. From this, it was confirmed that light was irradiated in a left-right direction from the headlamp lens 100 in a range having about 40 degrees, and light was irradiated in a shape protruding to the upper right.
According to the headlamp lens 100 of the present embodiment, as described above, the light exit surface 10 is formed to be longer in length in the x-axis direction than in the y-axis direction. Therefore, as shown in fig. 6c, the light can be emitted so as to spread widely in the left-right direction, and the light can be emitted so as to be biased toward the lower side in the up-down direction. In the up-down direction, the light may be irradiated in a range of about 10 degrees in the down direction compared to 0 degrees.
Therefore, most of the light emitted through the light emitting surface 10 can be irradiated in the left-right width direction. In addition, as shown in the figure, the reason why the light is irradiated in such a manner as to protrude toward the upper direction compared to 0 degree is that light emitted from a portion among the 1 st-1 st to 1 st-6 th light emitting surfaces 11a to 11f, the 2 st-1 st to 2 nd-6 th light emitting surfaces 12a to 12f, the 3 st-1 st to 3 rd-6 th light emitting surfaces 13a to 13f, and the 4 th-1 st to 4 th-6 th light emitting surfaces 14a to 14f can be irradiated. In the present embodiment, the light emitted from the 1 st-3 rd light emitting surface 11c and the 4 th-3 rd light emitting surface 14c may be irradiated toward the upper direction compared to 0 degree.
Fig. 7 to 10 are graphs showing simulation results of light emitted through each of the faces of the headlamp lens according to an embodiment of the present invention.
The range irradiated with light emitted through each face of the headlamp lens 100 according to the present embodiment is described in detail using the diagrams shown in fig. 7 to 10.
Fig. 7a to 7f are diagrams illustrating regions irradiated with light emitted from the 1 st-1 st to 1 st light emitting surfaces 11a to 11f of the headlamp lens 100 according to the present embodiment.
As shown in FIG. 7a, the light emitted through the 1 st-1 st light emitting surface 11a can be irradiated in the range of about-3 degrees to 5 degrees along the x-axis direction and in the range of about-5 degrees to 0 degrees along the y-axis direction. In this case, the shape irradiated with the light may be irradiated in a positive direction biased toward the x-axis direction, and may be irradiated in a negative direction biased toward the positive direction of the y-axis direction and biased toward the x-axis direction.
As shown in fig. 7b, the light emitted through the 1 st-2 nd light emitting surface 11b may be irradiated in a range of about-7 degrees to 10 degrees along the x-axis direction and in a range of about-8 degrees to 0 degrees along the y-axis direction. At this time, the shape irradiated with the light may be irradiated in a positive direction biased toward the x-axis direction, and may be irradiated in a negative direction biased toward the y-axis direction and in a negative direction biased toward the x-axis direction.
As shown in fig. 7c, the light emitted through the 1 st-3 rd light emitting surface 11c may be irradiated in a range of about 0 degrees to 15 degrees along the x-axis direction and in a range of about-3 degrees to 3 degrees along the y-axis direction. In this case, the shape irradiated with the light may be irradiated only in the positive direction of the x-axis direction, and may be irradiated in a positive direction toward the positive direction of the y-axis direction and biased toward the positive direction of the x-axis direction. Unlike the other light emitting surfaces, the light emitted from the 1 st to 3 rd light emitting surfaces 11c can be irradiated at 0 degree or more in the y-axis direction.
As shown in fig. 7d, the light emitted from the 1 st to 4 th light emitting surface 11d can be irradiated in the range of about 0 degree to 8 degrees along the x-axis direction and in the range of about-5 degrees to 0 degrees along the y-axis direction.
As shown in fig. 7e, the light emitted from the 1 st-5 th light emitting surface 11e can be irradiated in the range of about-9 degrees to 7 degrees along the x-axis direction and in the range of about-8 degrees to 0 degrees along the y-axis direction. At this time, the shape of the irradiated light may be irradiated in a negative direction biased toward the x-axis direction, and may be irradiated in a positive direction biased toward the y-axis direction toward the negative direction.
As shown in fig. 7f, the light emitted from the 1 st-6 th light emitting surface 11f can be irradiated in the range of about-6 degrees to 3 degrees along the x-axis direction and in the range of about-4 degrees to 0 degrees along the y-axis direction. At this time, the shape irradiated with the light may be irradiated in a negative direction biased toward the x-axis direction.
Fig. 8a to 8f are views showing regions irradiated with light emitted from the 2-1 st to 2-6 nd light emitting surfaces 12a to 12f of the headlamp lens 100 according to the present embodiment.
As shown in FIG. 8a, the light emitted through the 2 nd-1 st light emitting surface 12a can be irradiated in the range of about-9 degrees to 10 degrees along the x-axis direction and in the range of about-5 degrees to 0 degrees along the y-axis direction. At this time, the shape irradiated with the light may be irradiated in a positive direction biased toward the x-axis direction, and a negative direction region in the x-axis direction may be irradiated in a negative direction biased toward the x-axis direction and biased toward the y-axis direction.
As shown in fig. 8b, the light emitted through the 2 nd-2 nd light emitting surface 12b may be irradiated in a range of about-5 degrees to 13 degrees along the x-axis direction and in a range of about-5 degrees to 0 degrees along the y-axis direction. At this time, the shape irradiated with the light may be irradiated in a positive direction biased toward the x-axis direction, and a negative direction region in the x-axis direction may be irradiated in a negative direction biased toward the x-axis direction and biased toward the y-axis direction.
As shown in fig. 8c, the light emitted from the 2 nd-3 rd light emitting surface 12c can be irradiated in the range of about-1 degree to 45 degrees along the x-axis direction and in the range of about-13 degrees to 0 degrees along the y-axis direction. At this time, the shape irradiated with the light may be irradiated in a range of about-1 degree to 30 degrees in the x-axis direction in a range of about-7 degrees to 0 degrees in the y-axis direction, and the range of about 30 degrees or more in the x-axis direction may be irradiated in a negative direction gradually biased toward the positive direction in the x-axis direction. The light may be irradiated to a position that is less than about 37 degrees in the x-axis direction and adjacent to 0 degree in the y-axis direction.
In the present embodiment, the light emitted through the 2 nd to 3 rd light emitting surfaces 12c can be irradiated on a wide area irradiated toward the right side of the headlamp lens 100.
As shown in fig. 8d, the light emitted through the 2 nd-4 th light emitting surface 12d can be irradiated in the range of about-45 degrees to 1 degree along the x-axis direction and in the range of about-13 degrees to 0 degree along the y-axis direction. At this time, the shape irradiated with the light may be irradiated in a range of about-30 degrees to 1 degree in the x-axis direction in a range of about-7 degrees to 0 degrees in the y-axis direction, and the range of-30 degrees or less in the x-axis direction may be irradiated in a negative direction gradually biased toward the x-axis direction. Also, light may not strike a location adjacent to 0 degrees in the y-axis direction below about-37 degrees in the x-axis direction.
In the present embodiment, the light emitted through the 2 nd to 4 th light emitting surfaces 12d can be irradiated on a wide area irradiated toward the left side of the headlamp lens 100.
As shown in fig. 8e, the light emitted from the 2 nd-5 th light emitting surface 12e can be irradiated at an angle ranging from about-13 degrees to 7 degrees along the x-axis direction and from about-5 degrees to 0 degrees along the y-axis direction. In this case, the shape irradiated with the light may be irradiated in a negative direction biased toward the x-axis direction, and may be irradiated in a positive direction region in the x-axis direction in a negative direction biased toward the positive direction in the x-axis direction and biased toward the y-axis direction.
As shown in fig. 8f, the light emitted through the 2 nd-6 th light emitting surface 12f can be irradiated in the range of about-11 degrees to 10 degrees along the x-axis direction and in the range of about-5 degrees to 0 degrees along the y-axis direction. In this case, the shape irradiated with the light may be irradiated in a negative direction biased toward the x-axis direction, and in a positive direction area of the x-axis direction, the shape may be irradiated in a negative direction biased toward the y-axis direction while moving toward the positive direction of the x-axis direction.
Fig. 9a to 9f are diagrams showing regions irradiated with light emitted from the 3-1 st to 3-6 th light emitting surfaces 13a to 13f of the headlamp lens 100 according to the present embodiment.
As shown in FIG. 9a, the light emitted through the 3-1 st light emitting surface 13a is irradiated in a range of about-3 degrees to 6 degrees along the x-axis direction and in a range of about-5 degrees to 0 degrees along the y-axis direction. In this case, the shape irradiated with the light may be a positive direction deviated in the x-axis direction.
As shown in fig. 9b, the light emitted through the 3 rd-2 nd light emitting surface 13b may be irradiated in a range of about-5 degrees to 10 degrees along the x-axis direction and in a range of about-3 degrees to 0 degrees along the y-axis direction. In this case, the shape irradiated with the light may be a positive direction deviated in the x-axis direction.
As shown in fig. 9c, the light emitted through the 3 rd-3 rd light emitting surface 13c may be irradiated in a range of about-1 degree to 40 degrees along the x-axis direction and in a range of about-8 degrees to 0 degrees along the y-axis direction. At this time, the shape irradiated with the light may be irradiated in a range of about-1 degree to 38 degrees in the x-axis direction in a range of about-8 degrees to 0 degrees in the y-axis direction, and may be irradiated in a range of about 38 degrees or more in the x-axis direction in a positive direction moving toward the x-axis direction while gradually moving toward the y-axis direction.
In the present embodiment, the light emitted through the 3 rd to 3 rd light emitting surface 13c can be irradiated in a wide area irradiated toward the right side of the headlamp lens 100.
As shown in fig. 9d, the light emitted through the 3 rd to 4 th light emitting surface 13d may be irradiated in a range of about-40 degrees to 1 degree along the x-axis direction and in a range of-8 degrees to 0 degree along the y-axis direction. At this time, the shape irradiated with the light may be irradiated in a range of about-38 degrees to 1 degree in the x-axis direction in a range of the y-axis direction between-8 degrees and 0 degrees, and the range of-38 degrees or less in the x-axis direction may be irradiated in a negative direction toward the x-axis direction gradually biased toward the positive direction in the y-axis direction.
In the present embodiment, the light emitted through the 3 rd to 4 th light emitting surface 13d can be irradiated on a wide area irradiated toward the left side of the headlamp lens 100.
As shown in FIG. 9e, the light emitted through the 3 rd-5 th light emitting surface 13e can be irradiated in the range of about-10 degrees to 5 degrees along the x-axis direction and in the range of about-3 degrees to 0 degrees along the y-axis direction. At this time, the shape irradiated with the light may be irradiated in a negative direction biased toward the x-axis direction.
As shown in fig. 9f, the light emitted through the 3 rd-6 th light emitting surface 13f can be irradiated in the range of about-7 degrees to 4 degrees along the x-axis direction and in the range of about-5 degrees to 0 degrees along the y-axis direction. At this time, the shape irradiated with the light may be irradiated in a negative direction biased toward the x-axis direction.
Fig. 10a to 10f are views showing regions irradiated with light emitted from the 4-1 th to 4-6 th light emitting surfaces 14a to 14f of the headlamp lens 100 according to the present embodiment.
As shown in fig. 10a, the light emitted through the 4-1 th light emitting surface 14a may be irradiated in a range of about-3 degrees to 4 degrees along the x-axis direction and in a range of about-3 degrees to 0 degrees along the y-axis direction. In this case, the shape irradiated with the light may be inclined toward the positive direction of the x-axis direction.
As shown in fig. 10b, the light emitted through the 4-2 th light emitting surface 14b may be irradiated in a range of about-6 degrees to 11 degrees along the x-axis direction and in a range of about-5 degrees to 0 degrees along the y-axis direction. In this case, the shape irradiated with the light may be irradiated in a positive direction biased toward the x-axis direction, and the negative direction region in the x-axis direction may be irradiated in a negative direction biased toward the x-axis direction and biased toward the positive direction in the y-axis direction.
As shown in fig. 10c, the light emitted through the 4 th-3 rd light emitting surface 14c may be irradiated in a range of about-1 degree to 14 degrees along the x-axis direction and in a range of about-3 degrees to 3 degrees along the y-axis direction. In this case, the shape irradiated with the light may be mostly irradiated in the positive direction of the x-axis direction, and may be biased toward the positive direction of the y-axis direction toward the positive direction of the x-axis direction. The light emitted through the 4 th to 3 rd light emitting surface 14c may be irradiated toward 0 degrees or more in the y-axis direction, unlike the other light emitting surfaces.
As shown in fig. 10d, the light emitted through the 4 th-4 th light emitting surface 14d may be irradiated in a range of about-1 degree to 14 degrees along the x-axis direction and in a range of about-3 degrees to 3 degrees along the y-axis direction. In this case, the shape irradiated with the light may be mostly irradiated in the positive direction of the x-axis direction, and may be irradiated in a positive direction toward the positive direction of the x-axis direction and toward the positive direction of the y-axis direction. The light emitted through the 4 th to 4 th light emitting surfaces 14d may be irradiated toward 0 degrees or more in the y-axis direction, unlike the other light emitting surfaces.
As shown in FIG. 10e, the light emitted through the 4 th-5 th light emitting surface 14e can be irradiated in the range of about-12 degrees to 5 degrees along the x-axis direction and in the range of about-5 degrees to 0 degrees along the y-axis direction. At this time, the shape irradiated with the light may be irradiated in a negative direction biased toward the x-axis direction, and may be irradiated in a negative direction biased toward the x-axis direction and biased toward the y-axis direction.
As shown in fig. 10f, the light emitted through the 4 th-6 th light emitting surface 14f can be irradiated in the range of about-4 degrees to 3 degrees along the x-axis direction and in the range of about-3 degrees to 0 degrees along the y-axis direction. At this time, the shape of the irradiation light may be irradiated in a negative direction biased toward the x-axis direction.
As described above, among the light emitted by the headlamp luminaire 100 according to the present embodiment, the light emitted through the 2 nd to 3 rd light emitting surface 12c, the 2 nd to 4 th light emitting surface 12d, the 3 rd to 3 rd light emitting surface 13c, and the 3 rd to 4 th light emitting surface 13d, which are disposed at the center of the lens 100, is respectively irradiated on the widest region. The light emitted through the 1 st to 3 rd light emitting surfaces 11c and the 4 th to 3 rd light emitting surfaces 14c can be irradiated in the positive direction of the y-axis direction. The light emitted through the other light-emitting surface of the headlamp 100 can be irradiated to a necessary position of the region for intensifying the light irradiation.
Next, most of the light emitting surface 10 included in the lens 100 according to the present embodiment may be formed to emit symmetrical light with reference to a virtual line in the y-axis direction passing through the center of the light emitting surface 10 as shown in fig. 1. At this time, by using one or more light exit surfaces among the light exit surfaces 10 included in the lens 100 according to the present embodiment for the headlamp, as shown in fig. 6a, light protruding toward the upper direction can be emitted (cut off) in the right direction so as to meet the light distribution specification of the vehicle. In this embodiment, the light emitted from the 1 st-3 rd light emitting surface 11c and the 4 th-3 rd light emitting surface 14c can be emitted in a cut-off state.
In the present embodiment, the case where the light emitted from the 4 th to 4 th light emitting surface 14d is emitted in the off state is described, but the light emitted from the 4 th to 4 th light emitting surface 14d may be adjusted to be emitted to a different position as necessary. The positions of the light exiting from the 4 th to 4 th light exiting surfaces 14d can be adjusted to compensate for the insufficient amount of light exiting from the other light exiting surfaces.
Obviously, the positions irradiated by the light emitted from the light emitting surfaces described above may be different according to needs.
As described above, although the present invention has been described in detail with reference to the embodiments shown in the drawings, the above embodiments are merely illustrative of the preferred embodiments of the present invention and it should be understood that the present invention is not limited to the above embodiments, and the scope of the present invention is defined by the claims and their equivalents.
Claims (20)
1. A headlamp lens, comprising:
a light incident surface to which light from a light source is incident; and
a plurality of light-emitting surfaces for emitting light incident from the light-incident surface,
wherein the plurality of light-emitting surfaces have different focal positions from each other,
the light emitting surfaces are respectively formed into free curved surfaces.
2. The headlamp lens of claim 1,
in each of the plurality of light exit surfaces formed as the free-form surface, a curvature of a curved surface constituting each of the plurality of light exit surfaces is not constant.
3. The headlamp lens of claim 1,
the light emitted from the light-emitting surfaces is irradiated to a region partially overlapping each other.
4. The headlamp lens of claim 1,
some of the light emitted through the light-emitting surfaces is irradiated on the same region.
5. The headlamp lens of claim 1,
the light emitted through the plurality of light-emitting surfaces is irradiated on different regions from each other.
6. The headlamp lens of claim 1,
the light emitted through one or more light exit surfaces arranged at the center among the plurality of light exit surfaces irradiates the entire region in the left-right direction among the regions irradiated with the light emitted through the plurality of light exit surfaces.
7. The headlamp lens of claim 1,
the one or more light exit surfaces arranged outside the one or more light exit surfaces arranged on the center side among the plurality of light exit surfaces have a step difference from the one or more light exit surfaces arranged on the center side, and are arranged to protrude from the one or more light exit surfaces arranged on the center side.
8. The headlamp lens of claim 1,
the maximum height of the light-entering surface and the more than one light-exiting surface arranged at the central side among the plurality of light-exiting surfaces is larger than the maximum height of the light-entering surface and the more than one light-exiting surface arranged at the outer side of the more than one light-exiting surface arranged at the central side.
9. The headlamp lens of claim 1,
the light emitted from one or more light-emitting surfaces among the plurality of light-emitting surfaces is irradiated in a region of 0 degree or more in the y-axis direction,
the light emitted from the remaining light-emitting surfaces among the plurality of light-emitting surfaces is irradiated only in a region of 0 degree or less in the y-axis direction.
10. The headlamp lens of claim 9,
the one or more light exit surfaces of the plurality of light exit surfaces that cause light to exit so as to irradiate a region at least 0 degrees in the y-axis direction are light exit surfaces that are arranged on the outer edges of the plurality of light exit surfaces.
11. The headlamp lens of claim 1,
the light incident surface is formed as a plane.
12. The headlamp lens of claim 11,
the light incident surface is a plane.
13. The headlamp lens of claim 1, further comprising:
and the side faces are connected with the light incident face and the light emergent faces.
14. The headlamp lens of claim 1,
the size of the one or more light exit surfaces arranged outside the one or more light exit surfaces arranged at the center side among the plurality of light exit surfaces is smaller than the size of the one or more light exit surfaces arranged at the center side.
15. The headlamp lens of claim 1,
the area for irradiating light along the x-axis direction is relatively larger than the area for irradiating light along the y-axis direction for the light emitted through the plurality of light-emitting surfaces,
the width of the light incident surface in the x-axis direction is greater than the width of the light incident surface in the y-axis direction.
16. The headlamp lens of claim 1,
the light emitted through the light output surfaces has a larger light amount in a region irradiated with 0 degrees or more with respect to 0 degrees in the x-axis direction than in a region irradiated with 0 degrees or less.
17. The headlamp lens of claim 1,
the number of the light emitting surfaces is twenty-four.
18. The headlamp lens of claim 1,
the plurality of light emitting surfaces are respectively formed into a quadrilateral shape.
19. The headlamp lens of claim 1,
the overall shape of the light emitting surfaces is formed in a quadrangular shape,
wherein the quadrangular shape is formed to have a longer transverse length than a longitudinal length.
20. The headlamp lens of claim 19,
the ratio of the lateral length to the longitudinal length of the quadrilateral shape is 1.2: 1.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020190009071A KR20200092041A (en) | 2019-01-24 | 2019-01-24 | Lens of head lamp using vehicle |
| KR10-2019-0009071 | 2019-01-24 | ||
| PCT/KR2020/000579 WO2020153643A1 (en) | 2019-01-24 | 2020-01-13 | Vehicle headlamp lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113330247A true CN113330247A (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080010312.4A Pending CN113330247A (en) | 2019-01-24 | 2020-01-13 | Vehicle headlamp lens |
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| Country | Link |
|---|---|
| KR (1) | KR20200092041A (en) |
| CN (1) | CN113330247A (en) |
| WO (1) | WO2020153643A1 (en) |
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| CN207674349U (en) * | 2018-01-16 | 2018-07-31 | 上海小糸车灯有限公司 | Vehicle lamp lens |
-
2019
- 2019-01-24 KR KR1020190009071A patent/KR20200092041A/en not_active Application Discontinuation
-
2020
- 2020-01-13 CN CN202080010312.4A patent/CN113330247A/en active Pending
- 2020-01-13 WO PCT/KR2020/000579 patent/WO2020153643A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011175818A (en) * | 2010-02-24 | 2011-09-08 | Stanley Electric Co Ltd | Vehicle light, and multi-focal lens |
| CN105627219A (en) * | 2014-11-24 | 2016-06-01 | 福特全球技术公司 | Low profile highly efficient vehicular led modules and headlamps |
| CN105042511A (en) * | 2015-08-14 | 2015-11-11 | 华南理工大学 | Method for forming free-form surfaces of optical lenses of LED motorcycle headlamp |
| CN108027118A (en) * | 2015-09-29 | 2018-05-11 | 松下知识产权经营株式会社 | Light supply apparatus and light projector device |
| CN106969311A (en) * | 2015-11-20 | 2017-07-21 | Sl株式会社 | Lamps apparatus for vehicle |
| CN206386843U (en) * | 2016-12-27 | 2017-08-08 | 堤维西交通工业股份有限公司 | Lens of car light |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020153643A1 (en) | 2020-07-30 |
| KR20200092041A (en) | 2020-08-03 |
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