Lamp module and automobile
The lamp module addresses energy loss and heat dissipation issues by using a reflector with multiple reflective surfaces to adjust light distribution, minimizing micromirror closure and enhancing efficiency in lighting modes.
Patent Information
- Application Number
- CN202310628897.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-05-30
- Publication Date
- 2024-12-10
AI Technical Summary
Existing lamp modules in vehicles suffer from energy loss and heat dissipation issues due to the use of spatial light modulators that adjust light distribution, particularly in lighting modes where micromirrors in the off state absorb light, causing inefficiency and heat generation.
A lamp module design incorporating a reflector with multiple reflective surfaces, each corresponding to specific working modes, and a driving device to switch these surfaces, reducing the need for spatial light modulator adjustments in lighting modes, thereby minimizing micromirror closure and energy loss.
The solution significantly reduces energy loss and heat dissipation by maintaining most micromirrors in an open state, ensuring efficient light utilization and alleviating heat pressure in the lamp module.
Smart Images
Figure CN119103498A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of lamps, and in particular to a lamp module and a car. Background Art
[0002] The lamp module may specifically be an intelligent lamp module, and may be an intelligent vehicle lamp module used in a car. The lamp module may be able to switch between different working modes in different scenarios.
[0003] For example, when a car is driving at night, the lamp module can be switched to a lighting mode. In an entertainment scenario such as outdoor camping, the lamp module can be switched to a projection mode. At this time, the lamp module is used as a projector.
[0004] Among them, the lamp module emits a non-uniform light beam outward in the lighting mode, such as a light beam with a brighter center position than an edge position, and emits a uniform light beam outward in the projection mode.
[0005] Therefore, the lamp module switches the working mode, that is, switches the light distribution of the light beam emitted outward, and currently the lamp module mainly realizes the switching of light distribution through its internal spatial light modulator. Among them, the spatial light modulator is usually a digital micro-mirror device (DMD), which is a kind of optical switch. Its principle is to control the opening and closing of each micro-mirror and the opening and closing duration in each frame to form different light distribution effects. For example, in the lighting mode, the micro-mirrors corresponding to the center position of the light outlet can be controlled to be in the open state, so that the light reflected by these micro-mirrors enters the light outlet, and the micro-mirrors corresponding to the edge position of the light outlet can be controlled to be in the closed state, so that the light reflected by these micro-mirrors cannot enter the light outlet, so as to achieve the effect that the center position of the light beam is brighter than the edge position.
[0006] The micromirrors in the DMD that are in the off state actually reflect the incident light to other components other than the light outlet. When the light is incident on other components, it is absorbed by the components, which will cause energy loss. Summary of the invention
[0007] The present disclosure provides a lamp module and a car, which can solve the problem of energy loss caused by the light distribution of the lamp module in the related art being mainly adjusted by a spatial light modulator. The technical solution is as follows:
[0008] In one aspect, a lamp module is provided, which includes a light source module, a reflector, a spatial light modulator, a lens, and a driving device.
[0009] The light source module is used to emit a light beam to the reflector, the reflector is used to reflect the incident light beam to the spatial light modulator, and the spatial light modulator is used to transmit the incident light beam to the lens.
[0010] In the solution shown in the present disclosure, the spatial light modulator can be a reflective spatial light modulator, which is used to reflect the incident light beam to the lens. Alternatively, the spatial light modulator can also be a transmissive spatial light modulator, which is used to transmit the incident light beam to the lens. Among them, this embodiment does not specifically limit whether the spatial light modulator is a reflective spatial light modulator or a transmissive spatial light modulator, and can be flexibly selected according to actual conditions.
[0011] The lamp module has multiple working modes, the reflector has multiple reflecting surfaces, and the reflecting surfaces correspond to the working modes one by one. The driving device is used to drive the reflector to move so that the light beam emitted by the light source module is incident on different reflecting surfaces.
[0012] In the solution disclosed in the present invention, the reflector of the lamp module has multiple reflective surfaces, and the reflective surfaces correspond to the working modes of the lamp module one by one. Therefore, the light distribution of the light beam after being reflected by the reflective surfaces is relatively close to the light distribution of the corresponding working mode.
[0013] For example, when the working mode is the lighting mode, the reflector can be driven to move by the driving device and switched to the first reflecting surface corresponding to the lighting mode, which is located on the emission light path of the light source module, so that the light beam emitted by the light source module, after being reflected by the first reflecting surface, forms a light distribution effect corresponding to the lighting mode, such as the light distribution effect is bright in the center and dark at the edges.
[0014] For another example, when the working mode is the projection mode, the reflector can be driven to move by a driving device and switched to a second reflective surface corresponding to the projection mode, which is located on the emission light path of the light source module, so that the light beam emitted by the light source module, after being reflected by the second reflective surface, forms a light distribution effect corresponding to the projection mode, such as a light distribution effect in which the brightness of the center and the edge are equivalent and the light distribution is relatively uniform.
[0015] It can be seen that in the lighting mode, the lamp module can hardly use the spatial light modulator to adjust the light distribution effect of the light beam, or the spatial light modulator can be fine-tuned, so most of the micromirrors of the spatial light modulator can be in the open state, and only a small part of the micromirrors are in the closed state. In the projection mode, the spatial light modulator only needs to control the switch of the micromirrors according to the projected image.
[0016] Among them, the micromirror in the open state actually transmits the incident light to the lens and is used normally, while the micromirror in the closed state actually transmits the incident light to other components outside the lens, which is absorbed by the components and causes energy loss.
[0017] It can be seen that, in the lighting mode, the lamp module can reduce the number of micromirrors in the off state, thereby reducing energy loss.
[0018] Moreover, when the lamp module is in lighting mode, once most of the micromirrors are in the on state, the energy absorbed by components other than the lens is relatively small, and the heat generated is also relatively low, so the heat dissipation pressure of the lamp module can be alleviated.
[0019] In a possible implementation manner, different reflective surfaces have different surface shapes.
[0020] The surface type is the type of the reflective surface, and the surface type may include a spherical surface type, an aspherical surface type, a free-form surface type, and the like.
[0021] In the solution shown in the present disclosure, the surface shape of one reflective surface can be an aspherical surface shape, and the surface shape of the other reflective surface can be a free-form surface shape.
[0022] In a possible implementation, two reflective surfaces with the same surface shape have different surface parameters.
[0023] The surface parameters are parameters in the surface formula that characterize the surface shape. For example, the surface formula includes the radius of curvature and high-order coefficients.
[0024] In the solution shown in the present disclosure, the two reflective surfaces have the same surface type, for example, both are aspherical surfaces, or both are free-form surfaces, but the surface type parameters in the surface type formulas characterizing the two reflective surfaces are different. For example, the two reflective surfaces of the same aspherical surface type have different curvature radii and different high-order coefficients. For another example, the two reflective surfaces of the same free-form surface type have different curvature radii and different high-order coefficients.
[0025] In a possible implementation, the working modes of the lamp module include a lighting mode and a projection mode, and the multiple reflection surfaces include a first reflection surface and a second reflection surface, wherein the first reflection surface corresponds to the lighting mode, and the second reflection surface corresponds to the projection mode.
[0026] In the solution disclosed in the present disclosure, the light beam emitted by the light source module is incident on the first reflection surface, and after being reflected by the first reflection surface, the light distribution formed is close to the light distribution of the illumination mode. The light beam emitted by the light source module is incident on the second reflection surface, and after being reflected by the second reflection surface, the light distribution formed is close to the light distribution of the projection mode. For example, the light distribution of the projection mode is uniform light, and the intensity of the light beam at the center position and the edge position is basically the same.
[0027] In this way, the light distribution of the lamp module is adjusted through the first reflecting surface so that most of the micromirrors of the spatial light modulator are in the open state, so that most of the light beams emitted by the light source module can be emitted from the lens, reducing energy loss, reducing the light outside the lens, and alleviating the heat dissipation pressure of the lamp module.
[0028] In a possible implementation manner, the lighting mode is one or more, the first reflection surface is one or more, and one first reflection surface corresponds to one lighting mode.
[0029] For example, if the lighting mode is a high-beam lighting mode, the reflector has a first reflecting surface corresponding to the high-beam lighting mode.
[0030] For example, if the lighting mode is a low-beam lighting mode, the reflector has a first reflecting surface corresponding to the low-beam lighting mode.
[0031] For example, the illumination mode is a light carpet illumination mode, and the reflector has a first reflection surface, and the first reflection surface corresponds to the light carpet illumination mode.
[0032] For example, the lighting mode includes a high-beam lighting mode and a low-beam lighting mode, and the reflector has two first reflecting surfaces, one first reflecting surface corresponds to the high-beam lighting mode, and the other first reflecting surface corresponds to the low-beam lighting mode.
[0033] For example, the lighting mode includes a high-beam lighting mode and a light carpet lighting mode, and the reflector has two first reflecting surfaces, one first reflecting surface corresponds to the high-beam lighting mode, and the other first reflecting surface corresponds to the light carpet lighting mode.
[0034] For example, the lighting mode includes a low beam lighting mode and a light carpet lighting mode, then the reflector has two first reflecting surfaces, one first reflecting surface corresponds to the low beam lighting mode, and the other first reflecting surface corresponds to the light carpet lighting mode.
[0035] For example, the lighting modes include high beam lighting mode, low beam lighting mode and light carpet lighting mode. Then, the reflector has three first reflecting surfaces, one first reflecting surface corresponds to the high beam lighting mode, one first reflecting surface corresponds to the low beam lighting mode, and another first reflecting surface corresponds to the light carpet lighting mode.
[0036] In a possible implementation, the lighting mode is one, the first reflecting surface is one, the first reflecting surface is located on a first side of the reflector, and the second reflecting surface is located on a second side of the reflector, wherein the first side and the second side are opposite to each other.
[0037] Among them, the lighting mode is one, for example, the lighting mode is a high beam lighting mode, then, the light beam emitted by the light source module is incident on the first reflecting surface, and after being reflected by the first reflecting surface, the light distribution formed is closer to the light distribution of the high beam lighting mode.
[0038] For example, if the lighting mode is a low beam lighting mode, then the light beam emitted by the light source module is incident on the first reflection surface and after being reflected by the first reflection surface, the light distribution formed is closer to the light distribution of the low beam lighting mode.
[0039] For example, if the lighting mode is a light carpet lighting mode, then the light beam emitted by the light source module is incident on the first reflection surface and after being reflected by the first reflection surface, the light distribution formed is closer to the light distribution of the light carpet lighting mode.
[0040] In the solution shown in the present disclosure, the reflector has a first reflective surface and a second reflective surface that are positioned opposite to each other, and a driving device can drive the reflector to rotate to switch the first reflective surface or the second reflective surface, which is located on the optical path between the light source module and the spatial light modulator.
[0041] For example, in the lighting mode, the driving device drives the reflector to rotate until the first reflective surface is located on the optical path between the light source module and the spatial light modulator, and adjusts the light distribution of the lamp module through the first reflective surface so that most of the micromirrors of the spatial light modulator are in the open state, so that most of the light beam emitted by the light source module can be emitted from the lens, reducing energy loss, reducing the light outside the lens, and alleviating the heat dissipation pressure of the lamp module.
[0042] In a possible implementation, there are two illumination modes and two first reflection surfaces;
[0043] One of the first reflecting surfaces is located on the first side of the reflector, the second reflecting surface is located on the second side of the reflector, and another of the first reflecting surfaces is located on the third side of the reflector, wherein the first side and the second side are opposite to each other, and the second side and the third side are adjacent to each other.
[0044] In the solution shown in the present disclosure, the second reflection surface and the two first reflection surfaces, these three reflection surfaces, are located on different sides of the reflector. Then, the driving device can drive the reflector to rotate to switch different reflection surfaces located on the optical path between the light source module and the spatial light modulator.
[0045] The working mode includes two lighting modes, for example, the working mode includes a high beam lighting mode and a low beam lighting mode.
[0046] Then, in the high-beam lighting mode, the driving device drives the reflector to rotate to the first reflective surface corresponding to the high-beam lighting mode, which is located on the optical path between the light source module and the spatial light modulator. The light distribution of the lamp module is adjusted through the first reflective surface to be close to the light distribution of the high-beam lighting mode, so that most of the micromirrors of the spatial light modulator are in the open state, so that most of the light beam emitted by the light source module can be emitted from the lens, reducing energy loss, reducing the light outside the lens, and alleviating the heat dissipation pressure of the lamp module.
[0047] In the low-beam lighting mode, the driving device drives the reflector to rotate to a first reflective surface corresponding to the low-beam lighting mode, which is located on the optical path between the light source module and the spatial light modulator. The light distribution of the lamp module is adjusted through the first reflective surface to be close to the light distribution of the low-beam lighting mode, so that most of the micromirrors of the spatial light modulator are in an open state, so that most of the light beam emitted by the light source module can be emitted from the lens, reducing energy loss, reducing the light outside the lens, and alleviating the heat dissipation pressure of the lamp module.
[0048] In a possible implementation manner, different reflection surfaces are located on different sides of the reflector, and the driving device is used to drive the reflector to rotate.
[0049] In the solution shown in the present disclosure, for example, the reflector has two reflective surfaces, and the two reflective surfaces are positioned relative to each other. Then, the driving device can drive the reflector to rotate to switch different reflective surfaces located in the optical path between the light source module and the spatial light modulator, so that the light beam emitted by the light source module is incident on different reflective surfaces.
[0050] For another example, the reflector has more than two reflective surfaces, and these reflective surfaces can be arranged along the circumference of the reflector, that is, these reflective surfaces are located on different sides of the reflector. Then, the driving device can drive the reflector to rotate to switch different reflective surfaces located on the optical path between the light source module and the spatial light modulator, so that the light beam emitted by the light source module is incident on different reflective surfaces.
[0051] In a possible implementation manner, the lighting mode is one, the first reflecting surface is one, and the first reflecting surface and the second reflecting surface are located on the same side of the reflector.
[0052] Among them, the lighting mode is one, for example, the lighting mode is a high beam lighting mode, then, the light beam emitted by the light source module is incident on the first reflecting surface, and after being reflected by the first reflecting surface, the light distribution formed is closer to the light distribution of the high beam lighting mode.
[0053] For example, if the lighting mode is a low beam lighting mode, then the light beam emitted by the light source module is incident on the first reflection surface and after being reflected by the first reflection surface, the light distribution formed is closer to the light distribution of the low beam lighting mode.
[0054] For example, if the lighting mode is a light carpet lighting mode, then the light beam emitted by the light source module is incident on the first reflection surface and after being reflected by the first reflection surface, the light distribution formed is closer to the light distribution of the light carpet lighting mode.
[0055] In the solution shown in the present disclosure, the reflector has a first reflective surface and a second reflective surface arranged on the same side, and a driving device can drive the reflector to translate to switch the first reflective surface or the second reflective surface, which is located on the optical path between the light source module and the spatial light modulator.
[0056] For example, in the lighting mode, the driving device drives the reflector to translate to the first reflective surface located on the optical path between the light source module and the spatial light modulator, and adjusts the light distribution of the lamp module through the first reflective surface so that most of the micromirrors of the spatial light modulator are in the open state, so that most of the light beam emitted by the light source module can be emitted from the lens, reducing energy loss, reducing the light outside the lens, and alleviating the heat dissipation pressure of the lamp module.
[0057] In a possible implementation, there are two illumination modes and two first reflection surfaces;
[0058] The two first reflecting surfaces and the second reflecting surface are located on the same side of the reflecting mirror.
[0059] The working mode includes two lighting modes, for example, the working mode includes a high beam lighting mode and a low beam lighting mode.
[0060] Then, in the high-beam lighting mode, the driving device drives the reflector to translate to the first reflective surface corresponding to the high-beam lighting mode, which is located on the optical path between the light source module and the spatial light modulator. The light distribution of the lamp module is adjusted through the first reflective surface to be close to the light distribution of the high-beam lighting mode, so that most of the micromirrors of the spatial light modulator are in the open state, so that most of the light beam emitted by the light source module can be emitted from the lens, reducing energy loss, reducing the light outside the lens, and alleviating the heat dissipation pressure of the lamp module.
[0061] In the low-beam lighting mode, the driving device drives the reflector to translate to the first reflective surface corresponding to the low-beam lighting mode, which is located on the optical path between the light source module and the spatial light modulator. The light distribution of the lamp module is adjusted through the first reflective surface to be close to the light distribution of the low-beam lighting mode, so that most of the micromirrors of the spatial light modulator are in the open state, so that most of the light beam emitted by the light source module can be emitted from the lens, reducing energy loss, reducing the light outside the lens, and alleviating the heat dissipation pressure of the lamp module.
[0062] In a possible implementation manner, different reflection surfaces are located on the same side of the reflector, and the driving device is used to drive the reflector to translate.
[0063] In the solution shown in the present disclosure, for example, the reflector has two reflective surfaces, and the two reflective surfaces are located on the same side of the reflector. Then, the driving device can drive the reflector to translate to switch different reflective surfaces located on the optical path between the light source module and the spatial light modulator, so that the light beam emitted by the light source module is incident on different reflective surfaces.
[0064] For another example, the reflector has more than two reflective surfaces, which are located on the same side of the reflector. Then, the driving device can drive the reflector to translate to switch different reflective surfaces located on the optical path between the light source module and the spatial light modulator, so that the light beam emitted by the light source module is incident on different reflective surfaces.
[0065] In a possible implementation, the first reflective surface and the spatial light modulator are used to adjust the light distribution of the lamp module to the light distribution of the illumination mode corresponding to the first reflective surface.
[0066] In the solution shown in the present disclosure, in the lighting mode, the first reflective surface and the spatial light modulator jointly adjust the light distribution of the lamp module to the light distribution of the lighting mode. For example, in the lighting mode, the light distribution of the lamp module is mainly adjusted by the first reflective surface, and supplemented by the spatial light modulator. In this way, the light distribution effect of the lighting mode can be better achieved, and energy loss can be reduced, relieving the heat dissipation pressure of the lamp module.
[0067] In a possible implementation, the light source module includes a light source, a light homogenizing rod and a transmission mirror;
[0068] The light source is used to emit a light beam to the homogenizing rod, the homogenizing rod is used to homogenize the incident light beam so that the light beam is evenly transmitted to the transmission mirror, and the transmission mirror is used to reduce the beam angle of the incident light beam and transmit the light beam with the reduced beam angle to the reflector.
[0069] The light source may specifically be an LED lamp. For example, the light source module may include a circuit board, and the LED lamp serving as the light source is located on the surface of the circuit board.
[0070] The number of the transmission mirrors can be one or more.
[0071] In the solution disclosed in the present invention, the light beam emitted by the light source can be incident on the homogenizing rod, and after being uniformly treated by the homogenizing rod, it is incident on the transmission mirror. After the transmission mirror compresses and reduces the beam angle of the light beam, the light beam is more concentratedly converged on the reflector.
[0072] In this way, the light source module composed of the light source, the light homogenizing rod and the transmission mirror can be called a collimated light source module, which emits a concentrated and uniform light beam outward and is incident on the reflector.
[0073] On the other hand, a car is also provided, comprising the lamp module described above.
[0074] In the solution disclosed in the present invention, the reflector of the automobile lamp module has multiple reflective surfaces, and the reflective surfaces correspond to the working modes of the lamp module one by one. Therefore, the light distribution of the light beam after being reflected by the reflective surfaces is relatively close to the light distribution of the corresponding working mode.
[0075] For example, when the working mode is the lighting mode, the reflector can be driven to move by the driving device and switched to the first reflecting surface corresponding to the lighting mode, which is located on the emission light path of the light source module, so that the light beam emitted by the light source module, after being reflected by the first reflecting surface, forms a light distribution effect corresponding to the lighting mode, such as the light distribution effect is bright in the center and dark at the edges.
[0076] For another example, when the working mode is the projection mode, the reflector can be driven to move by a driving device and switched to a second reflective surface corresponding to the projection mode, which is located on the emission light path of the light source module, so that the light beam emitted by the light source module, after being reflected by the second reflective surface, forms a light distribution effect corresponding to the projection mode, such as a light distribution effect in which the brightness of the center and the edge are equivalent and the light distribution is relatively uniform.
[0077] It can be seen that in the lighting mode, the lamp module almost does not need to be adjusted by the spatial light modulator, or the spatial light modulator can be fine-tuned, so most of the micromirrors of the spatial light modulator can be in the open state, and only a small part of the micromirrors are in the closed state. In the projection mode, the spatial light modulator only needs to control the switch of the micromirrors according to the projected image.
[0078] Among them, the micromirror in the open state actually transmits the incident light to the lens and is used normally, while the micromirror in the closed state actually transmits the incident light to other components outside the lens, which is absorbed by the components and causes energy loss.
[0079] It can be seen that, in the lighting mode, the lamp module can reduce the number of micromirrors in the off state, thereby reducing energy loss.
[0080] Moreover, when the lamp module is in lighting mode, once most of the micromirrors are in the on state, the energy absorbed by components other than the lens is relatively small, and the heat generated is also relatively low, so the heat dissipation pressure of the lamp module can be alleviated. BRIEF DESCRIPTION OF THE DRAWINGS
[0081] Figure 1 is a structural schematic diagram of a lamp module provided by the present disclosure;
[0082] Figure 2 is a structural schematic diagram of a lamp module provided by the present disclosure;
[0083] Figure 3 is a structural schematic diagram of a lamp module provided by the present disclosure;
[0084] Figure 4 is a structural schematic diagram of a lamp module provided by the present disclosure;
[0085] Figure 5 is a structural schematic diagram of a lamp module provided by the present disclosure;
[0086] Figure 6 is a structural schematic diagram of a lamp module provided by the present disclosure;
[0087] Figure 7 is a structural schematic diagram of a lamp module provided by the present disclosure;
[0088] Figure 8 is a structural schematic diagram of a reflector provided by the present disclosure;
[0089] Fig. 9 is a structural schematic diagram of a lamp module provided by the present disclosure;
[0090] Fig.10 It is a structural schematic diagram of a lamp module provided by the present invention.
[0091] Description of Reference Numerals
[0092] 1. Light source module; 10. Circuit board; 11. Light source; 12. Light homogenizing rod; 13. Transmission mirror.
[0093] 2. Reflecting mirror; 21. Reflecting surface; 211. First reflecting surface; 212. Second reflecting surface.
[0094] 3. Spatial light modulator; 4. Lens. DETAILED DESCRIPTION
[0095] Although the description of the present disclosure will be introduced in conjunction with some embodiments, this does not mean that the features of this application are limited to the implementation mode. On the contrary, the purpose of introducing the application in conjunction with the implementation mode is to cover other options or modifications that may be extended based on the claims of the present disclosure. In order to provide an in-depth understanding of the present disclosure, the following description will include many specific details. The present disclosure can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present disclosure, some specific details will be omitted in the description. It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.
[0096] In the embodiments of the present disclosure, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features.
[0097] In the embodiments of the present disclosure, "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.
[0098] In the description of the embodiments of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The directional terms mentioned in the embodiments of the present disclosure, such as "upper", "lower", "left", "right", "inside", "outside", etc., are only reference directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present disclosure, 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 cannot be understood as a limitation on the embodiments of the present disclosure. "Multiple" means at least two.
[0099] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present disclosure. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.
[0100] This embodiment relates to a lamp module, which may be a smart lamp module used in a car. Figure 1 As shown, the lamp module mainly includes a light source module 1, a reflector 2, a spatial light modulator 3 and a lens 4. Figure 1 The middle arrow indicates the propagation direction of light. The reflector 2 is located on the outgoing light path of the light source module 1 , the spatial light modulator 3 is located on the reflected light path of the reflector 2 , and the lens 4 is located on the light path of the spatial light modulator 3 .
[0101] The lens 4 is located on the optical path of the spatial light modulator 3, for example, Figure 1 As shown, the lens 4 is located on the reflection light path of the spatial light modulator 3, and the spatial light modulator 3 is used as a reflection type spatial light modulator to reflect the incident light beam to the lens 4. For another example, the spatial light modulator 3 can also be a transmission type spatial light modulator, then the lens 4 is located on the transmission light path of the spatial light modulator 3, and the spatial light modulator 3 is used to transmit the incident light beam to the lens 4.
[0102] In this embodiment, there is no specific limitation on whether the spatial light modulator 3 is a reflective spatial light modulator or a transmissive spatial light modulator, and it can be flexibly selected according to actual conditions.
[0103] In this way, the light beam emitted by the light source module 1 can be incident on the reflector 2, reflected by the reflector 2 to the spatial light modulator 3, and then transmitted to the lens 4 through the spatial light modulator 3 and emitted outward from the lens 4.
[0104] The light source module 1 includes a light source 11 , and the light source 11 may specifically be a light-emitting diode (LED) lamp.
[0105] For example, Figure 2 As shown, the light source module 1 may include a circuit board 10 , and an LED lamp serving as a light source 11 is located on a surface of the circuit board 10 .
[0106] In one example, since the beam angle of the light source 11 is relatively large, such as 180 degrees, in order to reduce the beam angle of the light source 11, the light beam emitted by the light source module 1 is converged to the reflector 2, and accordingly, Figure 1 As shown, the light source module 1 may further include a transmission mirror 13 . The transmission mirror 13 has a converging function and can reduce the beam angle of the light source 11 .
[0107] The number of the transmission mirrors 13 may be one or more, which is not limited in this embodiment.
[0108] In one example, in order to make the light incident on the reflector 2 more uniformly, correspondingly, as Figure 2 As shown, the light source module 1 may further include a light homogenizing rod 12 , which is located on the outgoing light path of the light source 11 , and a transmission mirror 13 is located on the outgoing light path of the light homogenizing rod 12 .
[0109] In this way, the light source module 1 composed of the light source 11 , the light homogenizing rod 12 and the transmission mirror 13 can be called a collimated light source module, which emits a concentrated and uniform light beam to the outside and is incident on the reflector 2 .
[0110] The reflector 2 is used to change the path of the light path so that the light beam emitted by the light source module 1 can enter the spatial light modulator 3 to provide illumination light for the spatial light modulator 3 .
[0111] The spatial light modulator 3 may be a digital micro-mirror device (DMD).
[0112] In one example, the spatial light modulator 3 includes a plurality of micromirrors, each of which corresponds to a pixel point. Different images are formed by controlling the rotation of each micromirror, and the lens 4 can image the spatial light modulator 3 for projection and illumination.
[0113] For example, when the lamp module is in projection mode, it emits a uniform light beam outward, and the spatial light modulator 3 can be in a fully open state, that is, each micromirror is in an open state, and the light beam incident on the spatial light modulator 3 is transmitted into the lens 4 and hits the projection screen in front through the lens 4.
[0114] For another example, when the lamp module is in lighting mode, it emits a non-uniform light beam outward, and some of the micromirrors of the spatial light modulator 3 are in an open state (such as micromirrors around the center position are in an open state), and some of the micromirrors are in a closed state (such as micromirrors around the edge position are in an closed state).
[0115] Among them, the micromirror in the open state can transmit light to the lens 4, while the micromirror in the closed state transmits light to other components outside the lens 4 and is absorbed by the component.
[0116] Once the light is absorbed by components other than the lens 4, it will cause energy loss.
[0117] Moreover, the components that absorb light will also generate heat, which will bring certain heat dissipation pressure to the lamp module.
[0118] The lamp module provided in this embodiment can reduce energy loss and alleviate the heat dissipation pressure of the lamp module in the lighting mode.
[0119] In one example, the lamp module has multiple working modes, wherein the multiple working modes include at least one lighting mode. For example, the working modes of the lamp module include a projection mode and at least one lighting mode. For another example, the working modes of the lamp module include multiple lighting modes.
[0120] Among them, the above-mentioned lighting modes can be a high beam lighting mode, a low beam lighting mode and a light blanket lighting mode.
[0121] For example, the lamp module may have one lighting mode among a high beam lighting mode, a low beam lighting mode and a light carpet lighting mode.
[0122] For another example, the lamp module may have any two lighting modes among a high beam lighting mode, a low beam lighting mode and a light blanket lighting mode.
[0123] For another example, the lamp module may have three lighting modes: a high beam lighting mode, a low beam lighting mode, and a light blanket lighting mode.
[0124] In an example, the lamp module can switch different working modes by switching different reflective surfaces of the reflector 2. Accordingly, reference can be made to Figures 2 to 6 As shown, the reflector 2 has a plurality of reflective surfaces 21, and the reflective surfaces 21 correspond one to one with the working modes.
[0125] In order to switch the reflective surface 21 of the reflector 2, correspondingly, reference may be made to Figure 2 and Figure 3 As shown, the lamp module may further include a driving device (not shown in the figure), which is used to drive the reflector 2 to move so that the light beam emitted by the light source module 1 is incident on different reflective surfaces 21 of the reflector 2.
[0126] For example, the driving device is used to drive the reflector 2 to move to the reflective surface 21 corresponding to the current working mode, which is located on the optical path between the light source module 1 and the spatial light modulator 3, so that the light beam emitted by the light source module 1 is incident on the reflective surface 21 corresponding to the current working mode, and is reflected to the spatial light modulator 3 via the reflective surface 21.
[0127] For example, Figures 2 to 6 As shown, the multiple reflective surfaces 21 of the reflector 2 include at least one first reflective surface 211, and the first reflective surface 211 corresponds to the illumination mode. For example, there are multiple illumination modes, and there are also multiple first reflective surfaces 211, and the first reflective surfaces 211 correspond to the illumination modes one by one. The driving device is used to drive the reflector 2 to move to the first reflective surface 211 corresponding to the current illumination mode, which is located on the optical path between the light source module 1 and the spatial light modulator 3, so that the light beam emitted by the light source module 1 is incident on the first reflective surface 211 corresponding to the current illumination mode, and is incident on the spatial light modulator 3 via the first reflective surface 211.
[0128] For example, Figures 2 to 6 As shown, the multiple reflective surfaces 21 of the reflector 2 may also include a second reflective surface 212, and the second reflective surface 212 corresponds to the projection mode. In this way, the driving device is also used to drive the reflector 2 to move to the second reflective surface 212 corresponding to the projection mode, which is located on the optical path between the light source module 1 and the spatial light modulator 3, so that the light beam emitted by the light source module 1 is incident on the second reflective surface 212, and then incident on the spatial light modulator 3 via the second reflective surface 212.
[0129] In one example, the light distribution corresponding to each working mode is different. For example, the light distribution of different illumination modes is different, and the light distribution in the projection mode is related to the content of the projected image. Therefore, in the projection mode, the lamp module achieves the expected light distribution effect through the switching state of the micromirrors in the spatial light modulator 3.
[0130] In the lighting mode, the lamp module can achieve the light distribution effect of the lighting mode corresponding to the first reflecting surface 211 through the first reflecting surface 211. Accordingly, the first reflecting surface 211 is used to adjust the light distribution of the lamp module to the light distribution of the corresponding lighting mode.
[0131] For example, the light distribution characteristic of a certain lighting mode of the lamp module is that the brightness near the center position is relatively strong, while the brightness near the edge position is relatively weak. Then, by designing the surface shape of the first reflection surface 211 relative to the lighting mode, it is achieved that most of the light reflected by the first reflection surface 211 is incident on the micromirrors near the center position of the spatial light modulator 3, and a small part is incident on the micromirrors near the edge position of the spatial light modulator 3, so that the light distribution effect of the lighting mode can be achieved.
[0132] It can be seen that the lamp module can basically achieve the light distribution effect of the lighting mode corresponding to the first reflecting surface 211 through the first reflecting surface 211, so the micromirrors in the spatial light modulator 3 can be in a fully open state, or most of the micromirrors in the spatial light modulator 3 are in an open state, and a small part of the micromirrors are in a closed state. Compared with adjusting the light distribution of the lighting mode only through the spatial light modulator 3, this solution greatly reduces the light hitting other components other than the lens 4, so most of the light emitted by the light source module 1 can be emitted from the lens 4 and effectively utilized, thereby reducing energy loss.
[0133] Moreover, since the light hitting other components outside the lens is greatly reduced, the energy of light absorbed by components outside the lens inside the lamp module is reduced, and the heat generated is also relatively small, thus alleviating the heat dissipation pressure of the lamp module.
[0134] In one example, since the first reflective surface 211 has a design deviation, there are some discrepancies between the actual effect and the light distribution adjustment, so the spatial light modulator 3 can be used to assist the first reflective surface 211 in adjusting the light distribution. Then, accordingly, the first reflective surface 211 and the spatial light modulator 3 are used together to adjust the light distribution of the lamp module to the light distribution of the lighting mode corresponding to the first reflective surface 211, wherein the first reflective surface 211 can be the main one and the spatial light modulator 3 can be the auxiliary one.
[0135] In this way, energy loss can be reduced, heat dissipation pressure of the lamp module can be relieved, and light distribution requirements of various lighting modes can be met more ideally.
[0136] In an example, the working mode of the lamp module may include a lighting mode and a projection mode, wherein the number of the lighting mode is one, then, accordingly, Figure 2 and Figure 3 As shown, the multiple reflection surfaces 21 of the reflection mirror 2 include a first reflection surface 211 and a second reflection surface 212 , and the number of the first reflection surface 211 is one.
[0137] Then, when the lamp module works in the lighting mode, the driving device can drive the reflector 2 to move until the first reflective surface 211 is located on the optical path between the light source module 1 and the spatial light modulator 3. Figure 2 When the lamp module works in the projection mode, the driving device can drive the reflector 2 to move until the second reflective surface 212 is located on the optical path between the light source module 1 and the spatial light modulator 3. Figure 3 shown.
[0138] In another example, the working modes of the lamp module may include a lighting mode and a projection mode, wherein the number of lighting modes is multiple. Accordingly, the multiple reflecting surfaces 21 of the reflector 2 include a first reflecting surface 211 and a second reflecting surface 212, the number of the first reflecting surfaces 211 is multiple, and the multiple first reflecting surfaces 211 are different from each other.
[0139] For example, Figures 4 to 6 As shown, the working modes of the lamp module include a projection mode and two lighting modes, so the reflector 2 has two first reflective surfaces 211 and one second reflective surface 212. Figure 4 The first reflection surface 211 corresponding to an illumination mode is located on the light path between the light source module 1 and the spatial light modulator 3. Figure 5 The second reflection surface 212 corresponding to the projection mode is located on the light path between the light source module 1 and the spatial light modulator 3. Figure 6 The first reflection surface 211 corresponding to another illumination mode is located on the light path between the light source module 1 and the spatial light modulator 3 .
[0140] In an example, the driving device can drive the reflector 2 to rotate so that a certain reflective surface 21 is located on the light path between the light source module 1 and the spatial light modulator 3 .
[0141] For example, the multiple reflective surfaces of the reflector 2 are located on different sides of the reflector 2 , then the driving device can drive the reflector 2 to rotate to realize the reflective surface corresponding to each working mode, which is located on the optical path between the light source module 1 and the spatial light modulator 3 .
[0142] As an example, Figure 2 and Figure 3 As shown, the reflector 2 has a first reflective surface 211 and a second reflective surface 212, wherein the first reflective surface 211 is located on the first side of the reflector 2, and the second reflective surface 212 is located on the second side of the reflector 2, wherein the first side and the second side of the reflector 2 are relative to each other. Then, the driving device can realize that the first reflective surface 211 or the second reflective surface 212 is located on the optical path between the light source module 1 and the spatial light modulator 3 by driving the reflector 2 to rotate.
[0143] As another example, Figures 4 to 6As shown, the reflector 2 has two different first reflective surfaces 211 and one second reflective surface 212, one first reflective surface 211 is located on the first side of the reflector 2, the other first reflective surface 211 is located on the third side of the reflector 2, and the second reflective surface 212 is located on the second side of the reflector 2, wherein the first side and the second side of the reflector 2 are relative to each other, and the second side and the third side are adjacent to each other. It can be seen that the three reflective surfaces 21 of the reflector 2 are located on the three sides of the reflector 2, then, the driving device can realize that one of the reflective surfaces is located on the optical path between the light source module 1 and the spatial light modulator 3 by driving the reflector 2 to rotate.
[0144] In another example, the driving device may also drive the reflector 2 to translate so that a certain reflective surface is located on the optical path between the light source module 1 and the spatial light modulator 3 .
[0145] For example, Figures 7 to 10 As shown, the multiple reflective surfaces of the reflector 2 are located on the same side of the reflector 2 , then the driving device can drive the reflector 2 to translate to realize that the reflective surface corresponding to each working mode is located on the optical path between the light source module 1 and the spatial light modulator 3 .
[0146] like Figure 8 As shown, the reflector 2 has a first reflective surface 211 and a second reflective surface 212, and the two reflective surfaces are located on the same side of the reflector 2. Figure 7 As shown, the translation direction of the reflector 2 is Figure 7 The orientation of inside and outside of the paper is shown.
[0147] like Fig. 9 and Fig.10 As shown, the reflector 2 has a first reflective surface 211 and a second reflective surface 212, the two reflective surfaces are located on the same side of the reflector 2, and the translation direction of the reflector 2 is Fig. 9 and Fig.10 The direction indicated by the dashed arrow.
[0148] in, Fig. 9 The first reflection surface 211 is located on the light path between the light source module 1 and the spatial light modulator 3. Fig.10 The second reflection surface 212 is located on the light path between the light source module 1 and the spatial light modulator 3 .
[0149] It should be pointed out that Figures 7 to 10 The solution in which the reflector 2 includes a first reflective surface 211 and a second reflective surface 212 is only illustrated. The solution in which the reflector 2 includes more first reflective surfaces 211 is also applicable and has a similar structure, and will not be described in detail.
[0150] It should be pointed out that in the scheme where the driving device drives the reflector 2 to translate, this embodiment does not specifically limit the translation direction of the reflector 2. Different reflective surfaces of the reflector 2 can be realized by translation, and can be located on the optical path between the light source module 1 and the spatial light modulator 3.
[0151] It should be pointed out that the above-mentioned driving device drives the reflector 2 to rotate and translate to achieve the switching of the reflective surface on the optical path between the light source module 1 and the spatial light modulator 3. In some possible implementations, the switching effect can also be achieved by a mixed movement combining rotation and translation.
[0152] Therefore, this embodiment does not specifically limit the movement mode of the reflector 2, as long as it can achieve switching of its different reflective surfaces.
[0153] In one example, each reflective surface is different from each other, for example, the first reflective surface 211 is different from the second reflective surface 212, and each first reflective surface 211 is also different. The difference between the two reflective surfaces 21 can be achieved by different surface shapes, or by the same surface shape but different surface parameters.
[0154] The surface type is the type of the reflective surface, and the surface type may include a spherical surface type, an aspherical surface type, a free-form surface type, and the like.
[0155] Among them, each surface type can be characterized using the corresponding surface type formula. For example, the spherical surface type can be characterized using the spherical surface type formula, the aspherical surface type can be characterized using the aspherical surface type formula, and the free-form surface type can be characterized using the free-form surface type formula.
[0156] Among them, the surface parameters are also the parameters in the surface formula corresponding to the surface shape, such as the radius of curvature and high-order coefficients.
[0157] For example, of the two reflection surfaces 21 , the surface shape of one reflection surface 21 is an aspherical surface shape, and the surface shape of the other reflection surface 21 is a free-form surface shape. The two reflection surfaces 21 are different due to their different surface shapes.
[0158] For another example, the surface shapes of the two reflecting surfaces 21 are both aspherical surfaces or both free-form surface shapes, but the surface parameters in the surface shape formulas characterizing the two reflecting surfaces 21 are different, such as the curvature radii and high-order coefficients in the two aspherical surface shape formulas are different, or the curvature radii and high-order coefficients in the two free-form surface shape formulas are different.
[0159] As an example, in a scheme where there are multiple first reflection surfaces 211, the multiple first reflection surfaces 211 are different, and the scheme for implementing the different multiple first reflection surfaces 211 may be that the different first reflection surfaces 211 have different surface shapes, for example, the surface shape of one first reflection surface 211 is an aspherical surface, and the surface shape of another first reflection surface 211 is a free-form surface.
[0160] As another example, a different solution for implementing the plurality of first reflection surfaces 211 may also be that the different first reflection surfaces 211 have the same surface shape but different surface shape parameters.
[0161] For example, the surface shapes of different first reflection surfaces 211 are all aspherical surfaces, but the surface shape parameters of different first reflection surfaces 211 are different. For another example, the surface shapes of different first reflection surfaces 211 are all free-form surfaces, but the surface shape parameters of different first reflection surfaces 211 are different.
[0162] In one example, since there is a one-to-one correspondence between the first reflective surfaces 211 and the lighting modes, the design of each first reflective surface 211 is designed based on the light distribution of the corresponding lighting mode.
[0163] For example, during the design phase, each first reflective surface 211 may first select the surface type of the first reflective surface 211, such as an aspherical surface or a free-form surface, and then obtain the light distribution of the lighting mode corresponding to the first reflective surface 211. For example, if the first reflective surface 211 is intended to correspond to the high-beam lighting mode, then obtain the light spot of the high-beam lighting mode, and extract the light intensity at each position from the light spot to obtain the light distribution of the high-beam lighting mode. Then, adjust the surface parameters in the surface formula corresponding to the selected surface type, for example, adjust the curvature radius and high-order coefficients in the surface formula, until the light distribution formed by the first reflective surface 211 is substantially consistent with the light distribution of the corresponding lighting mode.
[0164] Similarly, the design of the second reflective surface 212 is also based on the light distribution required by the projection mode, and the surface parameters in the surface formula of the second reflective surface 212 are adjusted to achieve the light distribution formed by it, which is basically consistent with the light distribution required by the projection mode.
[0165] In this embodiment, the reflector of the lamp module has multiple reflective surfaces, and the reflective surfaces correspond to the working modes of the lamp module one by one. Therefore, the light distribution of the light beam after being reflected by the reflective surfaces is relatively close to the light distribution of the corresponding working mode.
[0166] For example, when the working mode is the lighting mode, the reflector can be driven to move by the driving device and switched to the first reflecting surface corresponding to the lighting mode, which is located on the emission light path of the light source module, so that the light beam emitted by the light source module, after being reflected by the first reflecting surface, forms a light distribution effect corresponding to the lighting mode, such as the light distribution effect is bright in the center and dark at the edges.
[0167] For another example, when the working mode is the projection mode, the reflector can be driven to move by a driving device and switched to a second reflective surface corresponding to the projection mode, which is located on the emission light path of the light source module, so that the light beam emitted by the light source module, after being reflected by the second reflective surface, forms a light distribution effect corresponding to the projection mode, such as a light distribution effect in which the brightness of the center and the edge are equivalent and the light distribution is relatively uniform.
[0168] It can be seen that in the lighting mode, the lamp module almost does not need to be adjusted by the spatial light modulator, or the spatial light modulator can be fine-tuned, so most of the micromirrors of the spatial light modulator can be in the open state, and only a small part of the micromirrors are in the closed state. In the projection mode, the spatial light modulator only needs to control the switch of the micromirrors according to the projected image.
[0169] Among them, the micromirror in the open state actually transmits the incident light to the lens and is used normally, while the micromirror in the closed state actually transmits the incident light to other components outside the lens, which is absorbed by the components and causes energy loss.
[0170] It can be seen that, in the lighting mode, the lamp module can reduce the number of micromirrors in the off state, thereby reducing energy loss.
[0171] Moreover, when the lamp module is in lighting mode, once most of the micromirrors are in the on state, the energy absorbed by components other than the lens is relatively small, and the heat generated is also relatively low, so the heat dissipation pressure of the lamp module can be alleviated.
[0172] This embodiment further provides a car, which may include the lamp module described above, such as a headlight of the car may include the lamp module described above.
[0173] As described above, the reflector of the automobile lamp module has multiple reflective surfaces, and the reflective surfaces correspond to the working modes of the lamp module one by one. Therefore, the light distribution of the light beam after being reflected by the reflective surfaces is relatively close to the light distribution of the corresponding working mode.
[0174] For example, when the working mode is the lighting mode, the reflector can be driven to move by the driving device and switched to the first reflecting surface corresponding to the lighting mode, which is located on the emission light path of the light source module, so that the light beam emitted by the light source module, after being reflected by the first reflecting surface, forms a light distribution effect corresponding to the lighting mode, such as the light distribution effect is bright in the center and dark at the edges.
[0175] For another example, when the working mode is the projection mode, the reflector can be driven to move by a driving device and switched to a second reflective surface corresponding to the projection mode, which is located on the emission light path of the light source module, so that the light beam emitted by the light source module, after being reflected by the second reflective surface, forms a light distribution effect corresponding to the projection mode, such as a light distribution effect in which the brightness of the center and the edge are equivalent and the light distribution is relatively uniform.
[0176] It can be seen that in the lighting mode, the lamp module almost does not need to be adjusted by the spatial light modulator, or the spatial light modulator can be fine-tuned, so most of the micromirrors of the spatial light modulator can be in the open state, and only a small part of the micromirrors are in the closed state. In the projection mode, the spatial light modulator only needs to control the switch of the micromirrors according to the projected image.
[0177] Among them, the micromirror in the open state actually transmits the incident light to the lens and is used normally, while the micromirror in the closed state actually transmits the incident light to other components outside the lens, which is absorbed by the components and causes energy loss.
[0178] It can be seen that, in the lighting mode, the lamp module can reduce the number of micromirrors in the off state, thereby reducing energy loss.
[0179] Moreover, when the lamp module is in lighting mode, once most of the micromirrors are in the on state, the energy absorbed by components other than the lens is relatively small, and the heat generated is also relatively low, so the heat dissipation pressure of the lamp module can be alleviated.
[0180] The above description is only one embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.
Claims
1. A lamp module, characterized in that: It comprises a light source module (1), a reflector (2), a spatial light modulator (3), a lens (4) and a driving device; The light source module (1) is used to emit a light beam to the reflector (2), the reflector (2) is used to reflect the incident light beam to the spatial light modulator (3), and the spatial light modulator (3) is used to transmit the incident light beam to the lens (4); The reflector (2) has a plurality of reflective surfaces (21), the plurality of reflective surfaces (21) corresponding one to one with the working modes of the lamp module, and the driving device is used to drive the reflector (2) to move so that the light beam emitted by the light source module (1) is incident on different reflective surfaces (21).
2. The lamp module according to claim 1, characterized in that: Different reflection surfaces (21) have different surface shapes.
3. The lamp module according to claim 1, characterized in that: Two reflecting surfaces (21) with the same surface shape have different surface shape parameters.
4. The lamp module according to any one of claims 1 to 3, characterized in that: The working modes of the lamp module include an illumination mode and a projection mode, the multiple reflection surfaces (21) include a first reflection surface (211) and a second reflection surface (212), the first reflection surface (211) corresponds to the illumination mode, and the second reflection surface (212) corresponds to the projection mode.
5. The lamp module according to claim 4, characterized in that: The lighting mode is one or more, the first reflection surface (211) is one or more, and one first reflection surface (211) corresponds to one lighting mode.
6. The lamp module according to claim 5, characterized in that: The lighting mode is one, and the first reflecting surface (211) is one; The first reflecting surface (211) is located on a first side of the reflecting mirror (2), and the second reflecting surface (212) is located on a second side of the reflecting mirror (2), wherein the first side and the second side are located opposite to each other.
7. The lamp module according to claim 5, characterized in that: There are two lighting modes, and there are two first reflecting surfaces (211); One of the first reflecting surfaces (211) is located on a first side of the reflecting mirror (2), the second reflecting surface (212) is located on a second side of the reflecting mirror (2), and another of the first reflecting surfaces (211) is located on a third side of the reflecting mirror (2), wherein the first side and the second side are opposite to each other, and the second side and the third side are adjacent to each other.
8. The lamp module according to claim 6 or 7, characterized in that: The driving device is used for driving the reflecting mirror (2) to rotate.
9. The lamp module according to claim 5, characterized in that: The lighting mode is one, the first reflection surface (211) is one, and the first reflection surface (211) and the second reflection surface (212) are located on the same side of the reflection mirror (2).
10. The lamp module according to claim 5, characterized in that: There are two lighting modes, there are two first reflection surfaces (211), and the two first reflection surfaces (211) and the second reflection surface (212) are located on the same side of the reflector (2).
11. The lamp module according to claim 9 or 10, characterized in that: The driving device is used for driving the reflecting mirror (2) to move in translation.
12. The lamp module according to claim 4, characterized in that: The lighting mode includes at least one of a high beam lighting mode, a low beam lighting mode and a light carpet lighting mode.
13. The lamp module according to any one of claims 4 to 12, characterized in that: The first reflecting surface (211) and the spatial light modulator (3) are used to adjust the light distribution of the lamp module to the light distribution of the lighting mode corresponding to the first reflecting surface (211).
14. The lamp module according to any one of claims 1 to 13, characterized in that: The light source module (1) comprises a light source (11), a light homogenizing rod (12) and a transmission mirror (13); The light source (11) is used to emit a light beam to the light homogenizing rod (12); the light homogenizing rod (12) is used to perform a homogenizing process on the incident light beam so that the light beam is uniformly transmitted to the transmission mirror (13); the transmission mirror (13) is used to reduce the beam angle of the incident light beam so that the light beam with the reduced beam angle is transmitted to the reflector (2).
15. A car, characterized in that: The automobile comprises the lamp module according to any one of claims 1 to 14.