CN216591509U

CN216591509U - Projection module of automobile lamp

Info

Publication number: CN216591509U
Application number: CN202123368697.2U
Authority: CN
Inventors: 郑贤良; 徐悦佳; 程哲
Original assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Current assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-05-24
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses an automobile lamp projection module, including pattern generation device, projection light path and projection adjusting device, the projection light path will the pattern that the pattern generation device generated is projected infinity or ground in projection module the place ahead, projection adjusting device has two at least adjusting position, works as projection adjusting device is in when switching between the adjusting position, the projection angle and the projection distance of projection module change in step. This car lamps and lanterns projection module changes through a projection adjustment mechanism's position, changes projection module's projection distance and projection angle simultaneously, makes projection module satisfy ground symbol projection and self-adaptation distance light projection function respectively to reduce module complexity and cost.

Description

Projection module of automobile lamp

Technical Field

The utility model belongs to the technical field of the technique of car lamps and lanterns and specifically relates to a car lamps and lanterns projection module.

Background

With the promotion of industrial regulations and active safety requirements, the ground symbol projection module and the adaptive high beam module become important directions for the development of automobile lamps. Ground symbol projection module and self-adaptation distance light module both are applicable to different operating modes: the self-adaptive high beam module projects the illumination pattern to the front of the automobile in a parallel light mode, mainly works in the state that the automobile runs at high speed, provides long-distance illumination for a driver, and simultaneously avoids dazzling light on pedestrians and drivers of other vehicles; the ground symbol projection module projects the illumination pattern to the ground in front of the automobile, mainly works in a low-speed and parking state, provides early warning signals of vehicle steering, stopping and the like for pedestrians and drivers of other vehicles, and becomes a brand-new human/vehicle and vehicle/vehicle information interaction channel. Although the application scenes of the ground symbol projection module and the adaptive high beam module are different, the ground symbol projection module and the adaptive high beam module are both provided with a projection light path and a pattern generating device, and the pattern generating device can be a film, a liquid crystal display module or a digital micromirror array matched with an illumination light source, and can also be an LED array used for generating patterns; the projection light path projects the pattern to the front of the projection module to form an ADB or ground pattern. It can be seen that the two have similarities on the scheme and the device, but the projection angle and the projection distance are different and are not commonly used.

The projection/imaging module is widely applied to the fields of household projectors, camera lenses and the like, and the projection module on the market has mature optical/mechanism design through years of development and has multidimensional adjusting functions of angle adjustment, focusing adjustment, focal length adjustment and the like. In consideration of the application scene of lens diversification, the above adjusting functions are usually independent and continuous work, and the complexity and the cost of the projection module are increased.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, the utility model provides an automobile lamp projection module, through a projection adjustment mechanism's position change, change projection module's projection distance and projection angle simultaneously, make projection module satisfy ground symbol projection and self-adaptation distance light projection function respectively to reduce module complexity and cost.

According to the utility model discloses car lamps and lanterns projection module, including pattern generation device, projection light path and projection adjusting device, the projection light path will the pattern that pattern generation device generated is projected infinity or ground in projection module the place ahead, projection adjusting device has two at least adjusting position, works as projection adjusting device is in when switching between the adjusting position, the projection angle and the projection distance of projection module change in step.

The beneficial effects of the utility model are that, through the switching of projection adjustment mechanism in different adjusting position, change the projection light path, the pattern that generates the device of pattern generation is projected grading screen and ground respectively, projection module working distance and working angle's synchronous control has been realized, make the projection module satisfy ground symbol projection and self-adaptation high beam projection function respectively, reduce on-vehicle projection module quantity, reduce the complexity and the cost of single projection module, occupation space is little, moreover, the steam generator is simple in structure, and has good application prospect.

According to an embodiment of the invention, the projection light path is composed of one or more optical elements.

According to an embodiment of the present invention, in the adjusting position of the projection adjusting device, a part of the adjusting position corresponds to a first projection mode of the projection module, and the first projection mode is to project the pattern generated by the pattern generating device to infinity in front of the projection module; another part of the adjusted position corresponds to a second projection mode of the projection module, the second projection mode being to project the pattern generated by the pattern generation device onto the ground in front of the projection module.

According to an embodiment of the present invention, the pattern generating device is fixed to the projection adjusting device, and when the projection adjusting device is switched between the adjustment positions, the position of the pattern generating device is also changed synchronously therewith.

According to an embodiment of the present invention, a part of the optical elements in the projection optical path is fixed on the projection adjusting device, and when the projection adjusting device is switched between the adjusting positions, the position of the part of the optical elements in the projection optical path is also changed synchronously therewith.

According to an embodiment of the present invention, the pattern generating device and a part of the optical elements in the projection optical path are all fixed on the projection adjusting device, and when the projection adjusting device is switched between the adjusting positions, the position of the pattern generating device and the position of the part of the optical elements in the projection optical path are also changed synchronously therewith.

According to the utility model discloses an embodiment, the projection optical path comprises four optical element, including three lens and a speculum, the pattern that the pattern generation device generated throws to behind two of them lenses in proper order the speculum jets out the pattern from another lens by the speculum.

According to the utility model discloses an embodiment, the projection optical path comprises two optical element, including a lens and a speculum, the pattern that the pattern generation device generated is projected to the speculum after by the speculum with the pattern throw to lens and from lens department and jet out.

According to an embodiment of the present invention, the projection light path is composed of two optical elements, including two lenses, and the pattern generated by the image generating device is projected to one of the lenses and then projected to the other lens by the one lens and is emitted from the other lens.

According to an embodiment of the present invention, the projection optical path includes a mirror and at least four lenses, at least one of the lenses is a concave lens.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

The reference numerals in fig. 1 are: 1. a pattern generating device; 2. a projection light path; 3. a projection adjusting device.

Fig. 2 is a first schematic diagram of an embodiment of the present invention.

The reference numerals in fig. 2 are: 101. a pattern generator; 102. a projection light path; 103. a projection adjusting device; 104. a first lens; 105. a second lens; 106. a third lens; 107. a mirror; 108. a pattern generator first location; 109. a pattern generator second position.

Fig. 3 is a second schematic diagram of the embodiment of the present invention.

The reference numerals in fig. 3 are: 201. a pattern generator; 202. a projection light path; 203. a projection adjusting device; 204. a first lens; 205. a second lens; 206. a third lens; 207. a mirror; 208. a pattern generator first location; 209. a pattern generator second position.

Fig. 4 is a third schematic diagram of the embodiment of the present invention.

The reference numerals in fig. 4 are: 301. a pattern generator; 302. a projection light path; 303. a projection adjusting device; 304. a first lens; 305. a second lens; 306. a third lens; 307. a mirror; 308. a mirror first position; 309. a mirror second position.

Fig. 5 is a fourth schematic diagram of the embodiment of the present invention.

The reference numerals in fig. 5 are: 401. a pattern generating device; 402. a projection light path; 403. a projection adjusting device; 404. a lens; 405. a mirror; 406. a mirror first position; 407. a mirror second position.

Fig. 6 is a fifth schematic diagram of the embodiment of the present invention.

The reference numerals in fig. 6 are: 501. a pattern generating device; 502. a projection light path; 503. a projection adjusting device; 504. a first lens; 505. a second lens; 506. a pattern generator first location; 507. a pattern generator second position.

Fig. 7 is a sixth schematic view of an embodiment of the present invention.

The reference numerals in fig. 7 are: 601. a pattern generating device; 602. a projection light path; 603. a projection adjusting device; 604. a concave lens; 605. a mirror; 606. a first convex lens; 607. a second convex lens; 608. a third convex lens; 609. a mirror first position; 610. a mirror second position.

Fig. 8 is a seventh schematic diagram of an embodiment of the present invention.

The reference numerals in fig. 8 are: 701. a pattern generating device; 702. a projection light path; 703. a projection adjusting device; 704. a mirror; 705. a first convex lens; 706. a second convex lens; 707. a third convex lens; 708. a first concave lens; 709. a second concave lens; 710. a mirror first position; 711. a mirror second position.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 for simplicity of description, and 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should 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; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The following describes the projection module of the automotive lamp according to the embodiment of the present invention with reference to the drawings.

See fig. 1, the utility model discloses an automobile lamp projection module, including pattern generation device 1, projection light path 2 and projection adjusting device 3, pattern generation device 1 is used for producing the image, pattern in projection light path 2 projects the pattern that pattern generation device 1 generated to infinity or ground in projection module the place ahead, projection adjusting device 3 has two at least adjusting position, when projection adjusting device 3 switches between adjusting position, the projection angle and the projection distance synchronous change of projection module, the position change through projection adjusting device 3 promptly, change the projection distance and the projection angle of projection module simultaneously, make the projection module satisfy ground symbol projection and self-adaptation distance light projection function respectively.

The projection light path is composed of one or more optical elements.

In the adjusting positions of the projection adjusting device, a part of the adjusting positions correspond to a first projection mode of the projection module, and the first projection mode is used for projecting the pattern generated by the pattern generating device to infinity in front of the projection module; the other part of the adjusting position corresponds to a second projection mode of the projection module, and the second projection mode is used for projecting the pattern generated by the pattern generating device to the ground in front of the projection module.

The projection optical path can be composed of four optical elements, including three lenses and a reflector, and the pattern generated by the pattern generating device is projected to two of the lenses in sequence and then projected to the reflector, and the pattern is emitted from the other lens by the reflector.

Alternatively, the projection optical path may be composed of two optical elements including a lens and a mirror, and the pattern generated by the pattern generating device is projected onto the mirror and then projected onto the lens by the mirror and emitted from the lens.

Alternatively, the projection optical path may be composed of two optical elements including two lenses, and the pattern generated by the image generating device is projected to one of the lenses and then projected to the other lens and emitted from the other lens.

Or the projection light path comprises a reflecting mirror and at least four lenses, and at least one of the lenses is a concave lens.

Referring to fig. 2, according to an embodiment of the present invention, the projection light path 102 is composed of four optical elements, including three lenses and a mirror 107, and the pattern generated by the pattern generating device 101 is projected onto two of the lenses in sequence and then projected onto the mirror 107, and the mirror 107 emits the pattern from the other lens. The three lenses are a first lens 104, a second lens 105 and a third lens 106; the lower surface of the first lens 104 is a plane, and the upper surface of the first lens 104 is a convex surface; the lower surface of the second lens 105 is a convex surface, and the upper surface of the second lens 105 is a convex surface; the rear surface of the third lens 106 is convex, and the front surface of the third lens 106 is convex; the first lens 104 is located directly below the second lens 105, the mirror 107 is located directly above the second lens 105, and the third lens 106 is located directly in front of the mirror 107. The first lens element 104 is a front-back symmetrical structure, the second lens element 105 is a front-back symmetrical structure, and the third lens element 106 is a front-back symmetrical structure. The second lens element 105 is vertically symmetrical, and the third lens element 106 is vertically symmetrical. That is, the second lens 105 has both a front-rear symmetric structure and an up-down symmetric structure, and the third lens 106 has both a front-rear symmetric structure and an up-down symmetric structure. The projection optical path 102 projects the pattern generated by the pattern generation device 101 to the front of the projection module, and focusing is achieved by changing the relative positions of the image generation device 101 and the projection optical path 102.

The pattern generating device 101 and the optical elements in the projection optical path 102 are fixed to the projection adjusting device 103, and when the projection adjusting device 103 is switched between the adjustment positions, the position of the pattern generating device 101 and the position of the optical elements in the projection optical path 102 are changed in synchronization therewith. Specifically, the pattern generation device 101, the first lens 104, the second lens 105, the third lens 106, and the mirror 107 are all fixed on the projection adjustment device 103.

When the pattern generating device 101 is located at the first pattern generator position 108, the projection optical path 102 projects the pattern generated by the pattern generating device 101 to infinity in front of the projection module, thereby implementing the adaptive high beam function.

When the pattern generation device 101 is located at the pattern generator second position 109, the projection optical path 102 projects the pattern generated by the pattern generation device 101 to a finite distance in front of the projection module.

When the pattern generating device 101 is located at the second position 109 of the pattern generator, the projection adjusting device 103 continues to rotate downward, and the projection optical path 102 projects the pattern generated by the pattern generating device 101 to the ground in front of the projection module, so as to realize ground symbol projection. It should be noted that projecting the pattern generated by the pattern generating device 101 onto the ground in front of the projection module is a special case where the pattern generated by the pattern generating device 101 is projected onto a limited distance in front of the projection module.

Referring to fig. 3, according to an embodiment of the present invention, the projection light path 202 is composed of four optical elements, including three lenses and a mirror 207, and the pattern generated by the pattern generating device 201 is projected onto two of the lenses in sequence and then projected onto the mirror 207, and the mirror 207 emits the pattern from the other lens. The three lenses are a first lens 204, a second lens 205, and a third lens 206, respectively; the lower surface of the first lens 204 is a plane, and the upper surface of the first lens 204 is a convex surface; the lower surface of the second lens 205 is a convex surface, and the upper surface of the second lens 205 is a convex surface; the rear surface of the third lens 206 is convex, and the front surface of the third lens 206 is convex; the first lens 204 is located directly below the second lens 205, the mirror 207 is located directly above the second lens 205, and the third lens 206 is located directly in front of the mirror 207. The first lens element 204 is a front-back symmetrical structure, the second lens element 205 is a front-back symmetrical structure, and the third lens element 206 is a front-back symmetrical structure. The second lens 205 is configured to be vertically symmetrical, and the third lens 206 is configured to be vertically symmetrical. That is, the second lens 205 has a front-rear symmetric structure and an up-down symmetric structure, and the third lens 206 has a front-rear symmetric structure and an up-down symmetric structure. The projection optical path 202 projects the pattern generated by the pattern generation device 201 to the front of the projection module, and focusing is achieved by changing the relative positions of the image generation device 201 and the projection optical path 202.

The pattern generating device 201 is fixed to the projection adjusting device 203, and when the projection adjusting device 203 is switched between the adjustment positions, the position of the pattern generating device 201 is changed synchronously therewith. The pattern generation device 201 is adjustable to two fixed positions, a pattern generator first position 208 and a pattern generator second position 209, respectively.

When the pattern generating device 201 is located at the first position 208 of the pattern generator, the projection optical path 202 projects the pattern generated by the pattern generating device 201 to infinity in front of the projection module, thereby implementing the adaptive high beam function.

When the pattern generating device 201 is located at the second position 209 of the pattern generator, the projection optical path 202 projects the pattern generated by the pattern generating device 201 to the ground in front of the projection module, so as to realize ground symbol projection.

Referring to fig. 4, according to an embodiment of the present invention, the projection optical path 302 is composed of four optical elements, including three lenses and a mirror 307, and the pattern generated by the pattern generating device 301 is projected onto two of the lenses in sequence and then projected onto the mirror 307, and the mirror 307 emits the pattern from the other lens. The three lenses are a first lens 304, a second lens 305, and a third lens 306, respectively; the lower surface of the first lens element 304 is a plane, and the upper surface of the first lens element 304 is a convex surface; the lower surface of the second lens 305 is convex, and the upper surface of the second lens 305 is convex; the rear surface of the third lens element 306 is convex, and the front surface of the third lens element 306 is convex; the first lens 304 is located directly below the second lens 305, the mirror 307 is located directly above the second lens 305, and the third lens 306 is located directly in front of the mirror 307. The first lens element 304 has a front-rear symmetric structure, the second lens element 305 has a front-rear symmetric structure, and the third lens element 306 has a front-rear symmetric structure. The second lens element 305 is configured to be vertically symmetrical, and the third lens element 306 is configured to be vertically symmetrical. That is, the second lens element 305 has both a front-rear symmetric structure and an up-down symmetric structure, and the third lens element 306 has both a front-rear symmetric structure and an up-down symmetric structure. The projection optical path 302 projects the pattern generated by the pattern generation device 301 to the front of the projection module, and focusing is achieved by changing the relative positions of the image generation device 301 and the projection optical path 302.

Part of the optical elements in the projection optical path 302 is fixed to the projection adjusting device 303, specifically, the mirror 307 is fixed to the projection adjusting device 303, but the first lens 304, the second lens 305, and the third lens 306 are not fixed to the projection adjusting device 303. When the projection adjusting device 303 is switched between the adjustment positions, the position of the mirror 307 is changed synchronously, and the two fixed positions are the mirror first position 308 and the mirror second position 309, respectively.

When the reflecting mirror 307 is located at the first reflecting mirror position 308, the projection optical path 302 projects the pattern generated by the pattern generating device 301 to infinity in front of the projection module, so as to realize the adaptive high beam function.

When the reflecting mirror 307 is located at the second position 309, the projection optical path 302 projects the pattern generated by the pattern generating device 301 to the ground in front of the projection module, so as to implement ground symbol projection.

Referring to fig. 5, according to an embodiment of the present invention, the projection optical path 402 is composed of two optical elements, including a lens 404 and a reflector 405, and a part of the optical elements in the projection optical path 402 is fixed on the projection adjusting device 403, specifically, the reflector 405 is fixed on the projection adjusting device 403, but the lens 404 is not fixed on the projection adjusting device 403. The mirror 405 is located right above the pattern generating device 401, the lens 404 is located right in front of the mirror 405, the rear surface of the lens 404 is a convex surface, the front surface of the lens 404 is a convex surface, and the lens 404 has a front-back symmetric structure and a top-bottom symmetric structure. When the pattern generated by the pattern generating device 401 is projected onto the mirror 405, the mirror 405 projects the pattern onto the lens 404 and exits from the lens 404, and when the projection adjusting device 403 is switched between the adjustment positions, the position of the mirror 405 is changed in synchronization therewith. The projection adjustment device 403 is adjustable to two fixed positions, namely a mirror 405 and a mirror first position 406 and a mirror second position 407.

When the reflecting mirror 405 is located at the first reflecting mirror position 406, the projection optical path 402 projects the pattern generated by the pattern generating device 401 to infinity in front of the projection module, thereby realizing the adaptive high beam function.

When the reflector 405 is located at the second position 407 of the reflector, the projection optical path 402 projects the pattern generated by the pattern generating device 401 to the ground in front of the projection module, so as to implement ground symbol projection.

Referring to fig. 6, according to an embodiment of the present invention, the projection light path 502 is composed of two optical elements, including two lenses, a first lens 504 and a second lens 505, respectively, the pattern generating device 501 is fixed on the projection adjusting device 503, the first lens 504 is located right in front of the pattern generating device 501, the second lens 505 is located right in front of the first lens 504, the rear surface of the first lens 504 is a plane, the front surface of the first lens 504 is a convex surface, and the first lens 504 is of an up-down symmetrical structure. The rear surface of the second lens 505 is convex, the front surface of the second lens 505 is convex, and the second lens 505 is of an up-down symmetrical structure. After the pattern generated by the pattern generating device 501 is projected onto the first lens 504, the pattern is emitted from the second lens 505 by the first lens 504, and when the projection adjusting device 503 is switched between the adjusting positions, the position of the pattern generating device 501 is changed synchronously. The pattern generation device 501 may be tuned to two fixed positions, a pattern generator first position 506 and a pattern generator second position 507.

When the pattern generation device 501 is located at the first position 506 of the pattern generator, the projection optical path 502 projects the pattern generated by the pattern generation device 501 to infinity in front of the projection module, thereby implementing the adaptive high beam function.

When the pattern generating device 501 is located at the second position 507 of the pattern generator, the projection optical path 502 projects the pattern generated by the pattern generating device 501 to the ground in front of the projection module, so as to realize ground symbol projection.

Referring to fig. 7, according to an embodiment of the present invention, the projection light path 602 is composed of five optical elements, including three convex lenses, a concave lens 604 and a reflector 605, wherein the three convex lenses are a first convex lens 606, a second convex lens 607 and a third convex lens 608, only the reflector 605 of the projection light path 602 is fixed on the projection adjusting device 603, the first convex lens 606 is located right above the pattern generating device 601, the second convex lens 607 is located right above the first convex lens 606, the reflector 605 is located right above the second convex lens 607, the concave lens 604 is located right in front of the reflector 605, and the third convex lens 608 is located right in front of the concave lens 604. The lower surface of the first convex lens 606 is a plane, the upper surface is a convex surface, and the first convex lens 606 is a front-back symmetrical structure. The lower surface and the upper surface of the second convex lens 607 are convex surfaces, and the second convex lens 607 has a front-back symmetrical structure and a top-bottom symmetrical structure. The front surface and the back surface of the concave lens 604 are concave surfaces, and the concave lens 604 has a front-back symmetrical structure and a top-bottom symmetrical structure. The front surface and the back surface of the third convex lens 608 are convex surfaces, and the third convex lens 608 has a front-back symmetrical structure and a top-bottom symmetrical structure. The pattern generated by the pattern generating device 601 is projected to the first convex lens 606, the second convex lens 607, and the mirror 605 in this order, and then the mirror 605 projects the pattern to the concave lens 604 and the third convex lens 608 in this order and exits from the third convex lens 608. When the projection adjusting device 603 is switched between the adjustment positions, the position of the mirror 605 is also changed in synchronization therewith. The projection adjustment device 603 is adjustable to two fixed positions, namely the mirror 605 is also adjustable to two fixed positions, a first mirror position 609 and a second mirror position 610.

When the reflecting mirror 605 is located at the first position 609 of the reflecting mirror, the projection optical path 602 projects the pattern generated by the pattern generating device 601 to infinity in front of the projection module, thereby realizing the adaptive high beam function.

When the reflecting mirror 605 is located at the second position 610 of the reflecting mirror, the projection optical path 602 projects the pattern generated by the pattern generating device 601 to the ground in front of the projection module, so as to realize ground symbol projection.

Referring to fig. 8, according to an embodiment of the present invention, the projection light path 702 is composed of six optical elements, including three convex lenses, two concave lenses and a reflector 704, wherein the three convex lenses are respectively a first convex lens 705, a second convex lens 706 and a third convex lens 707, wherein the two concave lenses are respectively a first concave lens 708 and a second concave lens 709, the first concave lens 708 is located right above the pattern generating device 701, the first convex lens 705 is located right above the first concave lens 708, the second convex lens 706 is located at the first convex lens 705 of the first convex lens 705, the reflector 704 is located right above the second convex lens 706, the second concave lens 709 is located right before the reflector 704, and the third convex lens 707 is located right before the second concave lens 709. The lower surface of the first concave lens 708 is a plane, the upper surface is a concave surface, and the first concave lens 708 has a front-back symmetrical structure. The lower surface of the first convex lens 705 is a plane, the upper surface is a convex surface, and the first convex lens 705 is a front-back symmetrical structure. The lower surface and the upper surface of the second convex lens 706 are convex surfaces, and the second convex lens 706 has a front-back symmetrical structure and a top-bottom symmetrical structure. The front surface of the second concave lens 709 is a concave surface, the rear surface is a concave surface, and the second concave lens 709 has a front-back symmetrical structure and a top-bottom symmetrical structure. The front surface of the third convex lens 707 is a convex surface, the rear surface is a convex surface, and the third convex lens 707 has both a front-rear symmetrical structure and an up-down symmetrical structure. The pattern generated by the pattern generating device 701 is projected onto the first concave lens 708, the first convex lens 705, the second convex lens 706, and the reflecting mirror 704 in this order, and then the pattern is projected onto the second concave lens 709 and the third convex lens 707 by the reflecting mirror 704 in this order and is emitted from the third convex lens 707. When the projection adjusting device 703 is switched between the adjustment positions, the position of the mirror 704 is also changed in synchronization therewith. The projection adjustment device 703 is adjustable to two fixed positions, namely the mirror 704 is also adjustable to two fixed positions, a first mirror position 710 and a second mirror position 711, respectively.

When the reflector 704 is located at the first reflector position 710, the projection optical path 702 projects the pattern generated by the pattern generating device 701 to infinity in front of the projection module, thereby implementing the adaptive high beam function.

When the reflecting mirror 704 is located at the second reflecting mirror position 711, the projection light path 702 projects the pattern generated by the pattern generating device 701 onto the ground in front of the projection module, so as to implement ground symbol projection.

The utility model discloses a car lamps and lanterns projection module is applicable to various motorcycle types, can retrench whole car projection module quantity, reduces grading design and product development cost, shortens the research and development cycle of whole car, has good using value.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides an automobile lamp projection module which characterized in that: including pattern generation device, projection light path and projection adjusting device, the projection light path will the pattern that pattern generation device generated is projected infinity or ground in the front of the projection module, projection adjusting device has two at least regulation positions, works as projection adjusting device is in when switching between the regulation position, projection module's projection angle and projection distance change in step.

2. The vehicle lamp projection module of claim 1, wherein: the projection light path is comprised of one or more optical elements.

3. The vehicle lamp projection module of claim 1, wherein: in the adjustment position of the projection adjustment means,

wherein a portion of the adjusted positions correspond to a first projection mode of the projection module, the first projection mode being to project the pattern generated by the pattern generation device at infinity in front of the projection module;

another part of the adjusted position corresponds to a second projection mode of the projection module, the second projection mode being to project the pattern generated by the pattern generation device onto the ground in front of the projection module.

4. The vehicle lamp projection module of claim 1, wherein: the pattern generating device is fixed on the projection adjusting device, and when the projection adjusting device is switched between the adjusting positions, the position of the pattern generating device is synchronously changed.

5. The vehicle lamp projection module of claim 2, wherein: and when the projection adjusting device is switched between the adjusting positions, the position of the partial optical element in the projection optical path is synchronously changed.

6. The vehicle lamp projection module of claim 2, wherein: the pattern generating device and a part of optical elements in the projection optical path are fixed on the projection adjusting device, and when the projection adjusting device is switched between the adjusting positions, the position of the pattern generating device and the position of the part of optical elements in the projection optical path are synchronously changed.

7. The vehicle lamp projection module of claim 2, wherein: the projection light path consists of four optical elements and comprises three lenses and a reflector, and the pattern generated by the pattern generation device is projected to two of the lenses in sequence and then projected to the reflector, and the pattern is emitted from the other lens by the reflector.

8. The vehicle lamp projection module of claim 2, wherein: the projection light path is composed of two optical elements and comprises a lens and a reflector, and the pattern generated by the pattern generation device is projected to the reflector, then the pattern is projected to the lens by the reflector and is emitted from the lens.

9. The vehicle lamp projection module of claim 2, wherein: the projection light path is composed of two optical elements and comprises two lenses, and the pattern generated by the image generation device is projected to one of the lenses, then is projected to the other lens by the lens and is emitted from the other lens.

10. The vehicle lamp projection module of claim 2, wherein: the projection light path comprises a reflector and at least four lenses, wherein at least one of the lenses is a concave lens.