CN210740266U

CN210740266U - Optical element for vehicle lamp

Info

Publication number: CN210740266U
Application number: CN201921809883.5U
Authority: CN
Inventors: 祝贺; 仇智平; 桑文慧
Original assignee: HASCO Vision Technology Co Ltd
Current assignee: HASCO Vision Technology Co Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-06-12
Anticipated expiration: 2029-10-25
Also published as: JP7322286B2; EP4027052A1; JP2022548750A; WO2021078115A1; EP4027052A4

Abstract

The utility model provides a car lamp optical element, which comprises two optical parts, wherein the optical parts are of a bending type and comprise a light gathering channel and a light guide channel which are connected with each other, and the joint of the two optical parts is provided with a reflecting surface; one end of the light gathering channel is provided with a plurality of light gathering structures, and the front end of the light guide channel is provided with an emergent light surface; the two optical parts are arranged up and down, and the two light guide channels are connected at the top and the bottom. The utility model discloses an useful part lies in: 1. the size of the optical element of the car lamp in the front and back direction is shortened, and the space required by installation is reduced; 2. forming the primary and secondary optical elements of the prior art as a unitary piece; 3. by arranging the separation grooves, secondary light distribution is realized, and the flexibility of light distribution is improved; through the arrangement of the sharp groove, a short-distance light cut-off line is realized, and the structure of the car light module is simplified; 4. by forming the groove, the high beam and low beam functions are simultaneously realized in the integrated vehicle lamp optical element, so that the functions of the vehicle lamp optical element are diversified.

Description

Optical element for vehicle lamp

Technical Field

The utility model relates to a vehicle lighting technology field especially relates to a car light optical element.

Background

In the field of vehicle lamp technology, a vehicle lamp module generally refers to a device that has a plastic or glass lens or a component with a corresponding structure as a final light emitting element and is used for illuminating a vehicle headlamp. The optical element of the car lamp is an important component of the car lamp module, and the light emitted by the light source can form the required light shape of the car lamp after being emitted by the optical element of the car lamp.

The vehicle lamp module in the prior art has a primary optical element and a secondary optical element, and a required light shape needs to be obtained through two light distribution adjustments of the primary optical element and the secondary optical element, and the two light distribution adjustments are more flexible than one light distribution adjustment of only one optical element, because the light shape can be adjusted by adjusting light distribution parameters of the two optical elements, and the adjustable light distribution parameters are more, for example, the light incident surface and the light emergent surface of the primary optical element and the light incident surface or the light emergent surface of the secondary optical element can be adjusted.

The prior art has the following defects:

1. a condenser with a plurality of condensing structures is generally adopted as a primary optical element, the condenser extends approximately in the front-back direction, and a lens arranged at the front end of the condenser is adopted as a secondary optical element, so that the overall size of the car lamp module is increased, and the car lamp module occupies a large space; in addition, the relative position between the two optical elements is required to be accurate, and the requirement on the assembly precision is high;

2. when the condenser is used as a low-beam optical element, a light shielding plate needs to be arranged in front of the condenser to form a low-beam cut-off line, which further causes the structure of the car lamp module to be complicated and the size to be increased;

3. the function is single, can only realize one function in passing light, distance beam, supplementary low beam and supplementary distance beam.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings, an object of the present invention is to provide a novel optical element for a vehicle lamp, which can effectively reduce the space required for installation and satisfy the working requirements.

The utility model provides a car lamp optical element, which comprises two optical parts, wherein the optical parts are of a bending type and comprise a light gathering channel and a light guide channel which are connected with each other, and the joint of the two optical parts is provided with a reflecting surface; one end of the light gathering channel is provided with a plurality of light gathering structures, and the front end of the light guide channel is provided with an emergent light surface; the two optical parts are arranged up and down, and the two light guide channels are connected at the top and the bottom.

Preferably, the light emitting surfaces are arc-shaped surfaces which are concave towards the inner side, and the two light emitting surfaces are connected to form a first light emitting surface matched with the lens.

Preferably, the first light emitting surface is a smooth surface.

Preferably, the light emitting surfaces are arc surfaces protruding outwards, and the two light emitting surfaces are connected to form a smooth and continuous second light emitting surface.

Preferably, the second light emitting surface is a convex lens surface or an arc surface extending in the left-right direction.

Preferably, the car light optical element is provided with a separation groove, and the separation groove penetrates through the two light guide channels and comprises a light emergent surface and a light incident surface which are oppositely arranged.

Preferably, the extending direction of the light emitting surface and the light incident surface is the same as the extending direction of the light emitting surface.

Preferably, a light guide channel in the optical element of the vehicle lamp is provided with a sharp groove with a V-shaped longitudinal section, and the sharp groove comprises a sharp groove reflection surface far away from the second light emitting surface and a sharp groove side surface close to the second light emitting surface.

Preferably, the extending directions of the sharp groove reflecting surface and the sharp groove side surface are the same as the extending direction of the light emitting surface.

Preferably, a groove is formed in one light guide channel in the optical element of the car lamp, and the groove comprises a front side surface and a rear side surface which are oppositely arranged and connected through a connecting surface.

Preferably, the extending direction of the front side surface and the rear side surface is the same as the extending direction of the light exit surface.

Preferably, the groove is opened on the bottom surface of the light guide channel located below.

Preferably, the light-gathering structure is a light-gathering cup structure with a concave cavity, a solid body with a curved structure or a protrusion protruding outwards.

The utility model discloses an useful part lies in:

1. the automobile lamp optical element comprises two bent optical parts, so that the size of the automobile lamp optical element in the front and back direction is shortened, and the space required by installation is reduced;

2. the primary optical element and the secondary optical element in the prior art are made into an integral piece, so that the number of parts can be effectively reduced, the relative position precision of the primary optical element and the secondary optical element is not required to be ensured any more during installation, the stability of the light shape of the car lamp can be better ensured, and the size of the car lamp module is reduced;

3. by arranging the separation groove, secondary light distribution can be realized in the integrated vehicle lamp optical element, and the flexibility of light distribution is improved; the sharp groove is arranged to replace the existing light screen, so that a passing light cut-off line is realized, the structure of the car lamp module is simplified, and the overall size is reduced;

4. by forming the groove, the high beam and low beam functions can be simultaneously realized in the integrated vehicle lamp optical element, so that the vehicle lamp optical element is diversified in function.

Drawings

FIG. 1 is a perspective view of a first embodiment;

FIG. 2 is a perspective view of the second embodiment;

FIG. 3 is a schematic view of the first embodiment in cooperation with a lens;

FIG. 4 is a light path diagram of the first embodiment;

FIG. 5 is a perspective view of the second embodiment;

FIG. 6 is a light path diagram of the second embodiment;

FIG. 7 is a perspective view of a third embodiment;

FIG. 8 is a light path diagram of the third embodiment;

FIG. 9 is a light path diagram of the fourth embodiment;

FIG. 10 is an optical path diagram of the fifth embodiment;

FIG. 11 is a beam path diagram for the sixth embodiment;

FIG. 12 is a high beam optical path diagram of the sixth embodiment;

element number description:

1 optical element for vehicle lamp

11 light-gathering structure

12 first emergent light surface

121 smooth emergent light surface

13 light-gathering channel

14 light guide channel

15 reflective surface

151 first reflecting surface

152 second reflecting surface

16 second light emergent surface

2 lens

21 lens emergent light surface

22 lens incident plane

3 Circuit board

31 light source

4 separate groove

41 light-emitting surface

42 light incident surface

5 pointed groove

51 pointed groove reflecting surface

52 pointed groove side

53 junction

6 groove

61 rear side surface

62 front side

63 connecting surface

64 front edge

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings. These embodiments are provided only for illustrating the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the following description, with reference to the drawing in fig. 4 as a direction, upward is taken along the view sheet, downward is taken along the view sheet, forward is taken along the side of the view sheet where the first light exit surface 12 is located toward the right, rearward is taken along the left, leftward is taken perpendicularly to the view sheet, and rightward is taken perpendicularly to the view sheet. All single-dot chain lines in the figures represent the optical axis.

As shown in fig. 1, the present invention provides a vehicle lamp optical element 1, which comprises two optical portions, each of which is of a bending type and comprises a light gathering channel 13 and a light guiding channel 14 connected with each other, and a reflecting surface 15 is arranged at the joint of the two optical portions. The light collecting channel 13 extends substantially in the vertical direction, and has a plurality of light collecting structures 11 at one end, and the light guiding channel 14 extends substantially in the front-rear direction, and has an exit surface at the front end. The two optical parts are arranged up and down, and the two light guide channels 14 are connected with each other at the top and bottom, that is, the bottom surface of the upper light guide channel 14 is connected with the top surface of the lower light guide channel 14, so that the car light optical element 1 looks like a T-shape. The thus arranged optical element 1 for a vehicle lamp is shortened in size in the front-rear direction, and the required installation space is reduced accordingly.

The following are several application examples of the present invention:

example one

As shown in fig. 1 to 4, the light exiting surface of each optical portion is an arc surface recessed toward the inner side of the optical element 1 of the vehicle lamp, and the two light exiting surfaces are connected to form a first light exiting surface 12 matched with the object focal plane of the lens 2. The two light exiting faces 121 are also preferably provided as smooth light exiting faces, eliminating the boundary between the two, thereby improving the continuity and uniformity of the light exiting shape at the junction of the two optics. When the vehicle lamp light source device works, the vehicle lamp optical element 1 serves as a primary optical element, the lens 2 serves as a secondary optical element, the light source 31 on the circuit board 3 emits incident light, the light condensing structure 11 can receive the incident light and condense the incident light, the condensed incident light enters the light condensing channel 13, is reflected by the reflecting surface 15 and then enters the light guide channel 14, is emitted from the first emergent light surface 12, and then sequentially emits the light through the lens incident light surface 22 and the lens emergent light surface 21, so that the light is projected in front of a vehicle after secondary light distribution is completed. The combination of the vehicle lamp optical element 1 and the lens 2 can be used to realize one of the functions of low beam, high beam, auxiliary low beam, auxiliary high beam or high beam and low beam integration.

Example two

The optical element for a vehicle lamp of this embodiment is further improved on the basis of the first embodiment, as shown in fig. 5 and fig. 6, the light emitting surfaces of the two optical portions are both arc surfaces protruding outward, the two light emitting surfaces are connected to form a smooth and continuous second light emitting surface 16, the second light emitting surface 16 may be an arc surface extending along the left-right direction of the optical element for a vehicle lamp 1, or may be a convex lens surface, where the convex lens surface specifically refers to a revolution surface obtained by revolving a cross-sectional line of the light emitting surface of the convex lens. When the vehicle-mounted light guide device works, the light gathering structure 11 receives incident light and gathers the light, the gathered incident light enters the light gathering channel 13, is reflected by the reflecting surface 15, enters the light guide channel 14, is emitted by the second emergent light surface 16 and is projected to the front of the vehicle. In the second embodiment, the primary optical element and the secondary optical element in the prior art are integrated, so that the relative position accuracy of the primary optical element and the secondary optical element is not required to be ensured during installation, and the stability of optical shape can be better ensured.

EXAMPLE III

In order to better adjust the shape of the emergent light based on the integrated optical element of the vehicle lamp, the optical element of the vehicle lamp of this embodiment is further improved based on the second embodiment, as shown in fig. 7 and 8, the optical element 1 of the vehicle lamp is provided with a separation groove 4, the separation groove 4 penetrates through the two light guide channels 14 and comprises an emergent surface 41 and an incident surface 42 which are oppositely arranged, and preferably, the extending direction of the emergent surface 41 and the incident surface 42 is the same as the extending direction of the second emergent surface 16. The integral vehicle lamp optical element 1 is divided into a front part and a rear part by the separating groove 4, the part positioned at the front side corresponds to the existing secondary optical element, and the part positioned at the rear side corresponds to the existing primary optical element, so that the vehicle lamp optical element 1 has the advantages of a single piece and can realize secondary light distribution. During operation, incident light enters the light-gathering channel 13 from the light-gathering structure 11, is reflected by the reflecting surface 15, enters the light-guiding channel 14, and then sequentially exits through the light-exiting surface 41, the light-entering surface 42 and the second light-exiting surface 16 and is projected in front of the vehicle. The partition grooves 4 may be vertically and/or horizontally through, and the light emitting surface 41 and the light incident surface 42 of the partition grooves 4 may have various forms, such as a plane, a concave surface, or a convex surface.

Example four

In order to form a low beam cut-off line while removing the shade, the optical element for a vehicle lamp according to this embodiment is further modified from embodiment two in that, as shown in fig. 9, the bottom surface of the light guide channel 14 located below is provided with a tip groove 5 having a V-shaped longitudinal section, the tip groove 5 is recessed upward and includes a tip groove reflection surface 51 away from the second light exit surface 16 and a tip groove side surface 52 close to the second light exit surface 16, and preferably, the extension directions of the tip groove reflection surface 51 and the tip groove side surface 52 are the same as the extension direction of the second light exit surface 16. The shape of the junction 53 of the sipe reflective surface 51 and the sipe side surface 52 (i.e. the top of the sipe 5) is adapted to the low-beam cut-off line shape for forming a low-beam cut-off line, which shape differs according to the different shape of the low-beam cut-off line. The light emitted from the upper light source (not shown) enters from the upper light-gathering structure 11, is reflected by the reflecting surface 15, is cut off by the connecting part 53, and is emitted from the second light-emitting surface 16 to form a near-light cut-off line, while the light emitted from the lower light source (not shown) enters from the lower light-gathering structure 11, and most of the incident light is reflected by the reflecting surface 15 and then is emitted to the sharp-grooved reflecting surface 51 to be totally reflected. Therefore, in operation, the utilization rate of the light of the lower light source is low, and only a small part of the light can be directly emitted from the second light emitting surface 16 after being reflected by the reflecting surface 15.

EXAMPLE five

As shown in fig. 10, in order to improve the light utilization rate of the lower light source (not shown) in the fourth embodiment, the fifth embodiment is further improved on the basis of the fourth embodiment, and the height of the pointed groove 5 is reduced, that is, the height of the pointed groove reflective surface 51 is reduced, so that more incident light entering from the lower light-gathering structure 11 can be directly emitted from the second light-emitting surface 16 by avoiding the total reflection of the pointed groove reflective surface 51 after being reflected by the reflective surface 15. Preferably, in order to facilitate machining of the tip groove 5 on the bottom surface of the light-guiding channel 14 located below, the joint 53 may be provided in a shape other than a sharp corner, such as a flat surface extending a short distance in the front-rear direction or a circular arc surface with a small radius.

EXAMPLE six

In order to realize the high-beam and low-beam integrated mode, the optical element of the vehicle lamp according to the embodiment is further modified based on the second embodiment, as shown in fig. 11 and 12, the bottom surface of the light guide channel 14 located below is provided with an upwardly concave groove 6, the groove 6 includes a front side surface 62 and a rear side surface 61 which are oppositely arranged and connected by a connecting surface 63, the extending direction of the front side surface 62 and the extending direction of the rear side surface 61 are the same as the extending direction of the second light emitting surface 16, and the front side surface 62 is closer to the second light emitting surface 16 than the rear side surface 61. The connection of the connection surface 63 to the front side 62 is a front edge 64, the shape of which front edge 64 is adapted to the shape of the low-beam cut-off line for forming the low-beam cut-off line, the shape of which differs according to the different shape of the low-beam cut-off line.

As shown in fig. 11, the overlying optic has a first reflective surface 151, which first reflective surface 151 reflects a substantial portion of the incident light from the overlying light source to the front edge 64 of the groove 6. Specifically, the incident light rays emitted from the upper light source enter from the light-condensing structure 11 located above, the path is divided into three parts, and the first part of the incident light ray a is reflected by the first reflecting surface 151 to the front edge 64, but is refracted directly from the second light-exiting surface 16 without any reflection at the front edge 64. The second part of the incident light ray B is directly reflected by the first reflecting surface 151 to the top of the second light exiting surface 16, and leaves the second light exiting surface 16 in a downward tilting direction approaching the optical axis. A third part of the incident light C is reflected by the first reflecting surface 151 to the connecting surface 63, then reflected by the connecting surface 63 to the top of the second light-emitting surface 16, and leaves the second light-emitting surface 16 in a downward-tilting direction approaching to the optical axis, wherein most of the light incident on the connecting surface 63 is totally reflected. The three light rays A, B, C can be used to generate a low beam shape.

As shown in fig. 12, the lower optical portion has a second reflective surface 152, the second reflective surface 152 reflects most of the incident light from the lower light source to the back side 61 of the groove 6, and the light passes through the groove 6 and is refracted to the second light-exiting surface 16 through the front side 62. Specifically, the incident light emitted by the lower light source enters from the light-gathering structure 11 located below, the path is divided into two parts, and a part of the incident light D is reflected by the second reflecting surface 152 to the rear side surface 61, then refracted to the front edge 64, and then directly emitted from the top of the second light-emitting surface 16; another part of the incident light E is reflected by the second reflective surface 152 to the rear side surface 61, and the light is refracted to the front side surface 62 and then refracted to the second light-emitting surface 16 for emission. The two light beams D and E can be used to generate high beam shape and connect with the low beam shape.

In addition, the light-gathering structure 11 has various expressions, one of which may be a light-gathering cup structure with a concave cavity as shown in fig. 8, the outer contour of the light-gathering cup structure is a curved structure gradually increasing from the position of the light source to the position of the reflection surface 15, the opening of the concave cavity is opened towards one side far away from the light-gathering channel 13, and the bottom of the concave cavity is provided with a protrusion protruding towards one side far away from the light-gathering channel 13; secondly, the light-gathering structure 11 is not provided with a concave cavity inside, and is only a solid body with a curved surface structure of which the outer contour is gradually increased from the position of the light source to the position of the reflecting surface 15, and the shape of the light incident surface can be a plane or a curved surface; thirdly, the light-gathering structure 11 may also be a protrusion disposed at an end of the light-gathering channel 13 and protruding to a side (i.e., an outer side) far away from the light-gathering channel 13. The light-gathering structure 11 may be arranged in one or more rows, which is helpful to collect and collimate the light emitted from the light source well, so as to improve the utilization rate of the light.

To sum up, the utility model discloses an useful part lies in:

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the technical principles of the present invention, several improvements and replacements can be made, such as providing the separation groove, the tongue groove or the groove on the basis of the optical element of the first embodiment of the present invention, and providing the lens as the secondary optical element to achieve the corresponding function. Those skilled in the art can flexibly adjust the requirements, and the modifications and the substitutions should also be considered as the protection scope of the present invention.

Claims

1. The optical element for the car lamp is characterized by comprising two optical parts, wherein the optical parts are bent and comprise a light gathering channel (13) and a light guide channel (14) which are connected with each other, and a reflecting surface (15) is arranged at the joint of the two optical parts; one end of the light gathering channel (13) is provided with a plurality of light gathering structures (11), and the front end of the light guide channel (14) is provided with an emergent light surface; the two optical parts are arranged up and down, and the two light guide channels (14) are connected at the top and the bottom.

2. Optical element for a vehicle lamp according to claim 1, characterized in that said exit facets are curved surfaces concave towards the inside, two of said exit facets being connected to form a first exit facet (12) cooperating with the lens (2).

3. Optical element for a vehicle lamp according to claim 2, characterized in that said first light exit surface (12) is a smooth surface.

4. The vehicle lamp optic according to claim 1, wherein the light exit facets are arcuate surfaces that project outwardly, and wherein the two light exit facets join to form a smooth continuous second light exit facet (16).

5. The vehicle lamp optical element according to claim 4, wherein the second light exit surface (16) is a convex lens surface or an arc surface extending in the left-right direction.

6. The optical element for a vehicle lamp according to claim 1, wherein the optical element (1) for a vehicle lamp is provided with a separation groove (4), and the separation groove (4) penetrates through the two light guide channels (14) and comprises a light exit surface (41) and a light entrance surface (42) which are oppositely arranged.

7. The optical element according to claim 6, characterized in that the light exit surface (41) and the light entrance surface (42) extend in the same direction as the light exit surface.

8. The vehicle lamp optical element according to claim 4, wherein a light guide channel (14) in the vehicle lamp optical element (1) is formed with a tip groove (5) having a V-shaped longitudinal section, and the tip groove (5) includes a tip groove reflection surface (51) distant from the second light exit surface (16) and a tip groove side surface (52) close to the second light exit surface (16).

9. The optical element for a vehicle lamp according to claim 8, wherein the direction of extension of the cusp groove reflecting surface (51) and the cusp groove side surface (52) is the same as the direction of extension of the light exit surface.

10. Automotive light optical element according to claim 1, characterized in that a light-conducting channel (14) in the automotive light optical element (1) is provided with a recess (6), the recess (6) comprising a front side (62) and a rear side (61) which are arranged opposite to each other and connected with each other by a connecting surface (63).

11. Automotive light optical element according to claim 10, characterized in that the front side surface (62) and the rear side surface (61) extend in the same direction as the direction of extension of the exit light surface.

12. Automotive light optical element according to claim 10, characterized in that the groove (6) opens onto the bottom surface of the underlying light-conducting channel (14).

13. Optical element for a vehicle lamp according to claim 1, characterized in that the light-gathering structure (11) is a light-gathering cup structure with a cavity, a solid body of a curved structure or a protrusion protruding towards the outside.