Imaging module based on total reflection and vehicle lamp
By using convex and concave surfaces in the imaging module for light reflection and introducing a total reflection surface, the problem of low imaging quality and accuracy when the optical path changes in traditional imaging optical systems is solved, and more efficient light propagation and simplicity are achieved. Assembly process.
Patent Information
- Application Number
- CN202310646861.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-01
- Publication Date
- 2024-12-10
AI Technical Summary
Traditional imaging optical systems have low imaging quality and accuracy when the optical path changes, and are difficult to assemble, resulting in low light loss and manufacturing efficiency.
The imaging module based on total reflection is adopted to achieve aberration correction through convex and concave surface reflections, and light loss is reduced through total reflection surfaces, and the overall molding structure simplifies the assembly process.
Improves imaging quality and accuracy, reduces light loss, simplifies the assembly process, and improves manufacturing efficiency.
Smart Images
Figure CN119103499A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of automobile lighting technology, and in particular to an imaging module and a vehicle lamp based on total reflection. Background Art
[0002] With the development of digital headlights, imaging modules are increasingly used in vehicle lighting systems. They use a lens group with clear imaging function combined with digital controllable optical devices such as DMD chips, MicroLED (micro light-emitting diodes), LCOS liquid crystal chips, etc. to perform imaging, thus realizing a lighting system that can dynamically change in real time.
[0003] Traditional imaging optical systems mostly use a transmission type that uses multiple lenses to correct aberrations, or a reflection type that uses multiple reflections to correct aberrations. However, whether it is a transmission type or a reflection type, a certain amount of light will be lost when the optical path changes, which reduces the image quality. In addition, the lens group composed of multiple lenses is prone to assembly errors during the assembly process, which increases the manufacturing difficulty and reduces the image quality and accuracy. Therefore, there is an urgent need for an imaging module that can reduce light loss while correcting aberrations, improve image quality and accuracy, and facilitate assembly. Summary of the invention
[0004] The present application provides an imaging module based on total reflection, which aims to solve the problems in the prior art that the imaging quality and accuracy of the traditional imaging optical system are low when the optical path is changed, and it is not easy to assemble.
[0005] The embodiment of the present application is implemented as follows:
[0006] In one aspect of an embodiment of the present application, there is provided an imaging module based on total reflection, comprising a light source and a lens arranged on the light emitting side of the light source, the lens comprising a light incident surface, a light emitting surface, a first surface and a second surface; the first surface is a convex surface, the second surface is a concave surface, and at least one of the first surface and the second surface is a total reflection surface;
[0007] The light emitted by the light source is incident on the lens from the light incident surface, and is reflected by the first surface and the second surface in sequence before being emitted from the light emitting surface.
[0008] Optionally, the light emitting surface is a convex surface.
[0009] Optionally, a second lens is provided between the light incident surface and the light source, and the second lens is a convex lens.
[0010] Optionally, the lens further includes a third surface, and the light is incident on the third surface after being reflected by the second surface, and is emitted from the light emitting surface after being reflected by the third surface.
[0011] Optionally, the third surface is a plane, and the light is incident on the plane after being reflected by the second surface, and is emitted from the light emitting surface after being reflected by the plane.
[0012] Optionally, the third surface is a parabolic reflecting surface, and the light is incident on the parabolic reflecting surface after being reflected by the second surface, and is emitted from the light emitting surface after being reflected by the parabolic reflecting surface.
[0013] Optionally, the imaging module based on total reflection further includes a focusing element, which is disposed on the light-emitting side of the light source, so that the light emitted by the light source is collimated by the focusing element and then enters the light-incident surface of the lens.
[0014] Optionally, the light emitting surface includes a first light emitting area and a second light emitting area which are arranged at intervals; the first surface includes two first sub-surfaces connected to each other, the second surface includes two second sub-surfaces, and one second sub-surface, the two first sub-surfaces and another second sub-surface are arranged along a first direction, and the first direction is perpendicular to the light emitting direction of the light source;
[0015] The light emitted by the light source is incident on the lens from the light incident surface, and a part of the light is reflected by one of the first sub-surfaces and the second sub-surface corresponding to the first sub-surface in sequence and then emitted from the first light emitting area; another part of the light is reflected by another first sub-surface and another second sub-surface in sequence and then emitted from the second light emitting area.
[0016] Optionally, the light incident surface includes a first light incident area and a second light incident and exiting area that are spaced apart; the first surface includes two first sub-surfaces, the second surface includes two second sub-surfaces that are connected to each other, and one first sub-surface, two second sub-surfaces, and another first sub-surface are arranged along a first direction, and the first direction is perpendicular to the light exiting direction of the light source;
[0017] The light source emits light, a portion of which is incident on the lens through the first light incident area, and is sequentially reflected by one of the first sub-surfaces and the second sub-surface corresponding to the first sub-surface before being emitted from the light emitting surface; another portion of the light source is incident on the lens through the second light incident area, and is sequentially reflected by another first sub-surface and another second sub-surface before being emitted from the light emitting surface.
[0018] Another aspect of an embodiment of the present application provides a vehicle lamp, comprising an imaging module based on total reflection as described above.
[0019] The beneficial effects of the embodiments of the present application include: the imaging module based on total reflection provided by the embodiments of the present application includes a light source and a lens arranged on the light-emitting side of the light source, the lens includes a light-entering surface, a light-emitting surface, a first surface and a second surface; the first surface is a convex surface, and the second surface is a concave surface, wherein the convex surface has a light-converging effect, and the concave surface has a light-diverging effect, and the light is reflected by the concave surface and the convex surface to achieve aberration correction; and at least one of the first surface and the second surface is a total reflection surface, and the setting of the total reflection surface reduces the loss of light in propagation, thereby improving the quality and accuracy of imaging; at the same time, the setting of the total reflection surface and the lens as a whole are an integrated molding structure, which makes the assembly of the imaging module based on the total reflection surface easier and improves the manufacturing efficiency. The light emitted by the light source is incident on the lens from the light-entering surface, and is reflected by the first surface and the second surface in turn and then emitted from the light-emitting surface. The imaging module based on the total reflection surface obtained by the above design reduces the loss of light in the light path propagation, improves the quality and accuracy of imaging; and also makes the assembly easier and improves the manufacturing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0021] Figure 1 A light path diagram of an imaging module based on total reflection provided in an embodiment of the present application;
[0022] Figure 2 A schematic diagram of the structure of an imaging module with a second lens provided in an embodiment of the present application;
[0023] Figure 3 An optical path diagram of an imaging module with a second lens provided in an embodiment of the present application;
[0024] Figure 4 A schematic diagram of the structure of an imaging module with a plane as the third surface provided in an embodiment of the present application;
[0025] Figure 5 An optical path diagram of an imaging module having a plane as a third surface provided in an embodiment of the present application;
[0026] Figure 6 A schematic diagram of the structure of an imaging module having a parabolic reflective surface as a third surface provided in an embodiment of the present application;
[0027] Figure 7An optical path diagram of an imaging module having a parabolic reflective surface as a third surface provided in an embodiment of the present application;
[0028] Figure 8 A schematic diagram of the structure of an imaging module with a focusing element provided in an embodiment of the present application;
[0029] Fig. 9 A light path diagram of an imaging module with a focusing element provided in an embodiment of the present application;
[0030] Fig.10 A schematic diagram of the structure of an imaging module with two light emitting areas provided in an embodiment of the present application;
[0031] Fig.11 A light path diagram of an imaging module with two light emitting areas provided in an embodiment of the present application;
[0032] Fig.12 A schematic diagram of two adjacent light patterns for imaging a single LED;
[0033] Fig.13 It is a schematic diagram of the light pattern after the two parts of light are superimposed after splitting;
[0034] Fig.14 A schematic diagram of the structure of an imaging module with two light incident areas provided in an embodiment of the present application;
[0035] Fig.15 A light path diagram of an imaging module with two light incident areas provided in an embodiment of the present application;
[0036] Fig.16 It is a schematic diagram of the light pattern after the two parts of light are combined;
[0037] Fig.17 A schematic diagram of the structure of a vehicle lamp provided in an embodiment of the present application.
[0038] Icon: 100-imaging module based on total reflection; 110-light source; 120-lens; 121-light incident surface; 1211-first light incident area; 1212-second light incident area; 122-light exit surface; 1221-first light exit area; 1222-second light exit area; 123-first surface; 1231-first sub-surface; 124-second surface; 1241-second sub-surface; 125-third surface; 1251-plane; 1252-parabolic reflecting surface; 130-second lens; 140-focusing element; 141-light cut-off line structure; 142-inflection point; a-first direction; 200-headlight; 210-heat sink; 220-lens connecting part. DETAILED DESCRIPTION
[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0040] In the description of the present application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0042] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0043] Please refer to Figure 1 In one aspect of an embodiment of the present application, an imaging module 100 based on total reflection is provided, comprising a light source 110 and a lens 120 arranged on the light emitting side of the light source 110, the lens 120 comprising a light incident surface 121, a light emitting surface 122, a first surface 123 and a second surface 124; the first surface 123 is a convex surface, the second surface 124 is a concave surface, and at least one of the first surface 123 and the second surface 124 is a total reflection surface; the light emitted by the light source 110 is incident on the lens 120 from the light incident surface 121, and is reflected by the first surface 123 and the second surface 124 in sequence and then emitted from the light emitting surface 122.
[0044] Specifically, the present application provides an imaging module 100 based on total reflection, including a light source 110, the light source 110 is used to emit light; a lens 120 is provided on the light emitting side of the light source 110; the lens 120 includes a light incident surface 121 and a light emitting surface 122, so that the light emitted by the light source 110 is incident into the interior of the lens 120 through the light incident surface 121 of the lens 120, and is emitted from the lens 120 through the light emitting surface 122. A first surface 123 and a second surface 124 are provided inside the lens 120, and the first surface 123 is a convex surface, and the second surface 124 is a concave surface, and at least one of the first surface 123 and the second surface 124 is a total reflection surface. The convex surface has a light converging effect, and the concave surface has a light diverging effect. When the light is incident from the light incident surface 121 to the lens 120, and is reflected by the first surface 123 and the second surface 124 in sequence, the aberration can be corrected by the action of the convex surface and the concave surface, and then emitted from the light emitting surface 122.
[0045] It should be noted that, first, in the embodiment of the present application, at least one of the first surface 123 and the second surface 124 is a total reflection surface. If there are multiple reflection surfaces, at least one is a total reflection surface, and the remaining reflection surfaces can be total reflection surfaces, or the reflection of light can be achieved through overall or partial coating. The setting of the total reflection surface can reduce the loss of light during the propagation of the light path, thereby improving the imaging quality and imaging accuracy of the light.
[0046] Second, in the embodiment of the present application, there is no restriction on the type of the light incident surface 121, and the light incident surface 121 can be a plane 1251, a convex surface, or a concave surface; when the light incident surface 121 is a convex surface, the divergent incident light can be converged once so that the light irradiated on the total reflection surface meets the total reflection angle of the corresponding material, thereby forming total reflection; in the actual production process, the type of the light incident surface 121 can be flexibly adjusted according to the types of other optical elements to further improve the imaging quality and accuracy of the light.
[0047] Third, in the embodiment of the present application, the light incident surface 121, the light emitting surface 122, the first surface 123 and the second surface 124 inside the lens 120 together form an integrated structure. Through the integrated setting, it is possible to avoid errors in assembling multiple lenses 120, improve imaging accuracy, simplify the assembly process, and improve assembly efficiency.
[0048] Fourth, in the embodiment of the present application, the imaging module can be integrally formed by two or more different materials through multiple injection molding or insert injection molding. The interface between the two or more materials realizes light path refraction due to the different refractive indices of the materials, and thus has the function of participating in the correction of phase difference and / or chromatic aberration.
[0049] The imaging module 100 based on total reflection provided in the embodiment of the present application includes a light source 110 and a lens 120 arranged on the light emitting side of the light source 110, the lens 120 includes a light incident surface 121, a light emitting surface 122, a first surface 123 and a second surface 124; the first surface 123 is a convex surface, and the second surface 124 is a concave surface, wherein the convex surface has a light converging effect, and the concave surface has a light diverging effect, and the light is reflected by the concave surface and the convex surface to achieve aberration correction; and at least one of the first surface 123 and the second surface 124 is a total reflection surface, and the setting of the total reflection surface reduces the loss of light in the propagation of the light path, thereby improving the quality and accuracy of imaging; at the same time, the setting of the total reflection surface and the lens 120 as a whole are an integrated molding structure, which makes the assembly of the imaging module based on total reflection easier and improves the manufacturing efficiency. The light emitted by the light source 110 enters the lens 120 from the light incident surface 121, and is reflected by the first surface 123 and the second surface 124 in sequence before being emitted from the light emitting surface 122. The imaging module based on total reflection obtained by the above design reduces the loss of light in the optical path propagation, improves the quality and accuracy of imaging, and also makes assembly easier and improves manufacturing efficiency.
[0050] In one achievable implementation of the present application, as Figure 1 As shown, the light emitting surface 122 is a convex surface.
[0051] Specifically, the light-emitting surface 122 of the present application is preferably a convex surface. When the light passes through the light-incident surface 121 of the lens 120 and enters the lens 120, and is reflected by the first surface 123 and the second surface 124 in sequence, it is emitted from the light-emitting surface 122. When the light-emitting surface 122 is a convex surface, the emitted light can be converged and emitted in a parallel or nearly parallel form; the light-incident surface 121 can be a plane 1251, a convex surface or a concave surface; when the light-incident surface 121 is a convex surface, the divergent incident light can be converged once, so that the light irradiated to the total reflection surface meets the total reflection angle of the corresponding material, forming total reflection; in the actual production process, the type of the light-incident surface 121 can be flexibly adjusted by the type of other optical elements to further improve the imaging quality and accuracy of the light type. By setting the light-emitting surface 122 as a convex surface, the emitted light can be converged and emitted in a parallel or nearly parallel form, so that the emission of light is more uniform.
[0052] In one achievable implementation of the present application, as Figure 2 As shown, a second lens 130 is disposed between the light incident surface 121 and the light source 110 , and the second lens 130 is a convex lens.
[0053] Specifically, the imaging module 100 based on total reflection also includes a second lens 130, which is arranged between the light incident surface 121 and the light source 110; the second lens 130 is preferably a convex lens, so as to collimate the divergent incident light emitted by the light source 110 and inject it into the light incident surface 121. At this time, the light incident surface 121 can be a plane 1251, a convex surface or a concave surface. In the specific assembly process, it can be flexibly adjusted according to the specific structure of the second lens 130 and the required convergence effect. Through the setting of the second lens 130, the divergent incident light can be collimated once, further improving the imaging quality and imaging accuracy of the light type.
[0054] For example, Figure 4 and Figure 6 As shown, the lens 120 further includes a third surface 125 . The light is incident on the third surface 125 after being reflected by the second surface 124 , and is emitted from the light emitting surface 122 after being reflected by the third surface 125 .
[0055] Specifically, the lens 120 also includes a third surface 125. When the light is reflected by the second surface 124, it is incident on the third surface 125, and is reflected by the third surface 125 and emitted from the light emitting surface 122. The light incident surface 121, the light emitting surface 122, the first surface 123, the second surface 124 and the third surface 125 inside the lens 120 together form an integrated structure. Through the integrated molding setting, it is possible to avoid errors in the assembly of multiple lenses, improve the imaging accuracy, simplify the assembly process, and improve the assembly efficiency. Through the setting of the third surface 125, the light can be further changed to achieve different exiting light types; wherein the specific structure of the third surface 125 can be flexibly changed according to the actual production process, for example, it can be a plane 1251 or a curved surface. Through the setting of the third surface 125, the structure of the imaging lens 120 based on total reflection can be made more flexible, and the flexibility of its internal space layout is improved.
[0056] For example, Figure 4 and Figure 5 As shown, the third surface 125 is a plane 1251 . The light is incident on the plane 1251 after being reflected by the second surface 124 , and is mirror-propagated after being reflected by the plane 1251 , and finally emitted from the light emitting surface 122 .
[0057] Specifically, the lens 120 further includes a third surface 125, and the third surface 125 is a plane 1251, and the plane 1251 is a total reflection surface. When the light is incident on the plane 1251 after being reflected by the second surface 124, the propagation direction of the light is changed by the reflection of the plane 1251, and the light is emitted from the light-emitting surface 122. The propagation direction of the light can be changed by setting the plane 1251, and the setting of the total reflection surface also reduces the loss of light during the propagation process; the setting of the plane 1251 can make the structure of the imaging lens 120 based on total reflection more flexible, and improve the flexibility of its internal space layout.
[0058] For example, Figure 3 As shown, Figure 6 and Figure 7 As shown, the third surface 125 is a parabolic reflecting surface 1252 . The light is incident on the parabolic reflecting surface 1252 after being reflected by the second surface 124 , and is emitted from the light emitting surface 122 after being reflected by the parabolic reflecting surface 1252 .
[0059] Specifically, the lens 120 further includes a third surface 125, and the third surface 125 is a parabolic reflective surface 1252. When the light is incident on the parabolic reflective surface 1252 after being reflected by the second surface 124, the parabolic reflective surface 1252 has a converging effect on the light. At this time, the light emitting surface 122 can be a plane, a convex surface, or a concave surface.
[0060] The parabolic reflecting surface 1252 can converge light, thereby improving imaging quality and imaging accuracy.
[0061] In an achievable implementation of the present application, the imaging module 100 based on total reflection further includes a focusing element 140, such as Figure 8 As shown, the focusing element 140 is disposed on the light emitting side of the light source 110 , so that the light emitted by the light source 110 is collimated by the focusing element 140 and then enters the light incident surface 121 of the lens 120 .
[0062] Specifically, the imaging module 100 based on total reflection further includes a focusing element 140, which is disposed on the light-emitting side of the light source 110. The light emitted by the light source 110 can be collimated by the focusing element 140 and then incident on the light-incident surface 121 of the lens 120. Figure 8 and Fig. 9As shown, the focusing element 140 is a parabolic reflector, the light source 110 is arranged at the focus of the parabolic reflector, and a light-dark cutoff line structure 141 is arranged at the edge of the parabolic reflector near the light source 110 to realize the low beam function; the focus of the lens 120 is arranged near the inflection point 142 of the light-dark cutoff line structure 141, and at this time, the light incident surface 121 can be a plane, a convex surface or a concave surface. The focusing element 140 can be a parabolic reflector or a focusing cup.
[0063] By disposing the focusing element 140 , the divergent light emitted by the light source 110 can be focused by the focusing element 140 and then emitted toward the light incident surface 121 of the lens 120 , thereby further improving the imaging quality and imaging accuracy.
[0064] Another aspect of the embodiment of the present application is as follows Fig.10 and Fig.11 As shown, the light emitting surface 122 includes a first light emitting area 1221 and a second light emitting area 1222 that are spaced apart; the first surface 123 includes two first sub-surfaces 1231 that are connected to each other, and the second surface 124 includes two second sub-surfaces 1241, and one second sub-surface 1241, the two first sub-surfaces 1231, and the other second sub-surface 1241 are arranged along a first direction a, and the first direction a is perpendicular to the light emitting direction of the light source 110;
[0065] The light emitted by the light source 110 is incident on the lens 120 from the light incident surface 121, and a part of the light is sequentially reflected by one of the first sub-surfaces 1231 and a second sub-surface 1241 corresponding to the first sub-surface 1231 and then emitted from the first light emitting area 1221; another part of the light source 110 is sequentially reflected by another first sub-surface 1231 and another second sub-surface 1241 corresponding to the first sub-surface 1231 and then emitted from the second light emitting area 1222.
[0066] Specifically, the light emitting surface 122 of the imaging module 100 based on total reflection has a first light emitting area 1221 and a second light emitting area 1222, and the first light emitting area 1221 and the second light emitting area 1222 are arranged at intervals, so that the imaging module 100 based on total reflection forms two light emitting channels for light entering from the same light incident surface 121; wherein, the first surface 123 includes two interconnected first sub-surfaces 1231, and the second surface 124 includes two second sub-surfaces 1241, and one second sub-surface 1241, the two first sub-surfaces 1231 and the other second sub-surface 1241 are arranged along a first direction a, and the first direction a is perpendicular to the light emitting direction of the light source 110.
[0067] The light emitted by the light source 110 is incident on the lens 120 from the light incident surface 121, and is reflected by the two first sub-surfaces 1231 and respectively enters the two light output channels. After being reflected by the second sub-surfaces 1241 in the two light output channels, the light is emitted from the first light output area 1221 and the second light output area 1222 respectively.
[0068] By setting multiple light emitting areas, light can be split, and the multiple light paths after splitting can achieve angle adjustment. Fig.12 As shown in the figure, when a single LED forms an image, there is a partial dark area between the corresponding pixels, and the distribution of light has a light-dark gradient; by splitting the light and deflecting the light path of the split light to the left or right, the two parts of light are superimposed. Fig.13 As shown, after the light is superimposed, the dark area becomes brighter, the light and dark gradient at the junction of the light patterns becomes weaker, the transition is more natural, and the imaging quality is improved.
[0069] In one achievable implementation of the present application, as Fig.14 and Fig.15 As shown, the light incident surface 121 includes a first light incident area 1211 and a second light incident area 1212 that are spaced apart; the first surface 123 includes two first sub-surfaces 1231, and the second surface 124 includes two second sub-surfaces 1241 that are connected to each other. A first sub-surface 1231, two second sub-surfaces 1241, and another first sub-surface 1231 are arranged along a first direction a, and the first direction a is perpendicular to the light emitting direction of the light source 110;
[0070] The light source 110 emits light, a portion of which is incident on the lens 120 through the first light incident area 1211, and is sequentially reflected by one of the first sub-surfaces 1231 and the second sub-surface 1241 adjacent to the first sub-surface 1231 before being emitted from the light emitting surface 122; another portion of the light source 110 is incident on the lens 120 through the second light incident area 1212, and is sequentially reflected by another first sub-surface 1231 and another second sub-surface 1241 corresponding to the first sub-surface 1231 before being emitted from the light emitting surface 122.
[0071] Specifically, the light incident surface 121 of the imaging module 100 based on total reflection has a first light incident area 1211 and a second light incident area 1212, and the first light incident area 1211 and the second light incident area 1212 are arranged at intervals, so that the imaging module 100 based on total reflection forms two light incident channels with two light incident areas, and finally emits light from the same light emitting surface 122; wherein the first surface 123 includes two first sub-surfaces 1231, the second surface 124 includes two second sub-surfaces 1241 connected to each other, and a first sub-surface 1231, two second sub-surfaces 1241 and another first sub-surface 1231 are arranged along a first direction a, and the first direction a is perpendicular to the light emitting direction of the light source 110;
[0072] The light emitted by the light source 110 is divided into two parts and is incident on the lens 120 from the first light incident area 1211 and the second light incident area 1212 respectively, and is reflected by the two first sub-surfaces 1231 and is incident on the two second sub-surfaces 1241 respectively. After being reflected by the two second sub-surfaces 1241 respectively, the light is emitted from the same light emitting surface 122 together, so that the light is combined. At this time, the two parts of the light have a certain angle of overlap.
[0073] like Fig.16 As shown, by changing the transmission angle of the two parts of light, the two parts of light are combined to form an overlapping area, thereby increasing the brightness of the overlapping area to meet the maximum brightness requirements of the high and low beam lighting systems of the headlight 200.
[0074] In another aspect of an embodiment of the present application, a vehicle lamp 200 is provided, comprising the imaging module 100 based on total reflection as described above.
[0075] Specifically, another aspect of the present application provides a vehicle lamp 200, such as Fig.17 As shown, it includes the imaging module 100 based on total reflection as described above, and the left and right sides of the light incident surface 121 of the imaging module 100 based on total reflection are connected to the heat sink 210 through the lens connecting part 220 respectively; the light source 110 of the imaging module 100 based on total reflection is fixedly connected to one side of the heat sink 210, and is located in the middle position of the two lens connecting parts 220. The imaging module 100 based on total reflection reduces the loss of light in the propagation of the light path through the setting of the total reflection surface, improves the imaging quality and accuracy of the light type; at the same time, it also makes the assembly easier and improves the manufacturing efficiency. At the same time, it also makes its internal layout more flexible, and can also flexibly adjust the demand for light brightness. The specific structure and beneficial effects of the imaging module 100 based on total reflection have been introduced in detail above, and will not be repeated here.
[0076] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. An imaging module based on total reflection, characterized in that: A light source and a lens arranged on the light emitting side of the light source, wherein the lens comprises a light incident surface, a light emitting surface, a first surface and a second surface; the first surface is a convex surface, the second surface is a concave surface, and at least one of the first surface and the second surface is a total reflection surface; The light emitted by the light source is incident on the lens from the light incident surface, and is reflected by the first surface and the second surface in sequence before being emitted from the light emitting surface.
2. The imaging module based on total reflection according to claim 1, characterized in that: The light emitting surface is a convex surface.
3. The imaging module based on total reflection according to claim 2, characterized in that: A second lens is disposed between the light incident surface and the light source, and the second lens is a convex lens.
4. The imaging module based on total reflection according to claim 1, characterized in that: The lens further includes a third surface. The light is incident on the third surface after being reflected by the second surface, and is emitted from the light emitting surface after being reflected by the third surface.
5. The imaging module based on total reflection according to claim 4, characterized in that: The third surface is a plane, the light is incident on the plane after being reflected by the second surface, and is emitted from the light emitting surface after being reflected by the plane.
6. The imaging module based on total reflection according to claim 4, characterized in that: The third surface is a parabolic reflecting surface. The light is incident on the parabolic reflecting surface after being reflected by the second surface, and is emitted from the light emitting surface after being reflected by the parabolic reflecting surface.
7. The imaging module based on total reflection according to claim 1, characterized in that: The imaging module based on total reflection also includes a focusing element, which is arranged on the light-emitting side of the light source, so that the light emitted by the light source is collimated by the focusing element and then incident on the light-incident surface of the lens.
8. The imaging module based on total reflection according to claim 1, characterized in that: The light emitting surface comprises a first light emitting area and a second light emitting area which are arranged at intervals; the first surface comprises two first sub-surfaces which are connected to each other, the second surface comprises two second sub-surfaces, one second sub-surface, two first sub-surfaces and another second sub-surface are arranged along a first direction, and the first direction is perpendicular to the light emitting direction of the light source; The light emitted by the light source is incident on the lens from the light incident surface, wherein a portion of the light is sequentially reflected by one of the first sub-surfaces and the second sub-surface corresponding to the first sub-surface and then emitted from the first light emitting area; another portion of the light is sequentially reflected by another first sub-surface and another second sub-surface and then emitted from the second light emitting area.
9. The imaging module based on total reflection according to claim 1, characterized in that: The light incident surface includes a first light incident area and a second light incident area that are spaced apart; the first surface includes two first sub-surfaces, the second surface includes two second sub-surfaces that are connected to each other, one first sub-surface, two second sub-surfaces, and another first sub-surface are arranged along a first direction, and the first direction is perpendicular to the light emitting direction of the light source; The light source emits light, wherein a portion of the light is incident on the lens through the first light incident area, and is sequentially reflected by one of the first sub-surfaces and the second sub-surface corresponding to the first sub-surface, and then is emitted from the light exit surface; another portion of the light source is incident on the lens through the second light incident area, and is sequentially reflected by another first sub-surface and another second sub-surface, and then is emitted from the light exit surface.
10. A vehicle lamp, characterized in that: It comprises an imaging module based on total reflection as described in any one of claims 1 to 9.