CN216556941U - Projection car light and vehicle projection system - Google Patents

Abstract

The utility model relates to the technical field of optics, and provides a projection vehicle lamp and a vehicle projection system, wherein the projection vehicle lamp comprises: a light source; the light transmission module is used for transmitting the light beam generated by the light source to the DMD; when the projection car light is in a projection mode and a low-beam illumination mode, the DMD is used for reflecting the light beam emitted by the light transmission module to the light output module through the plane reflector; when the projection car lamp is in a high beam illumination mode, the first rotating mirror module is used for reflecting the light beam emitted by the light transmission module to the light output module through the convex reflecting mirror, wherein the light output module is used for projecting or illuminating the received light beam, so that the projection mode and the illumination mode of the projection car lamp are switched mutually.

Description

Projection car light and vehicle projection system

Technical Field

The utility model relates to the technical field of optics, in particular to a projection car lamp and a vehicle projection system.

Background

With the increasing demand of people for automobile configuration, an automobile is not only a transportation tool, but also one of entertainment devices that users can enjoy during a rest while traveling, for example, when users drive to play, the users can use the projection function of the automobile lamp to watch movies or entertainment videos, and the automobile lamp with the projection function is called as a projection lamp. At present, a projection system of an automobile lamp realizes that the automobile headlamp has a projection function by installing a projector unit in the automobile headlamp and using the automobile headlamp as a light source of the projector. If a user wants to use the front lamp of the automobile for illumination, the projection mode of the front lamp of the automobile needs to be turned off first, and then the illumination mode of the front lamp of the automobile needs to be turned on, so that the projection mode and the illumination mode of the front lamp of the automobile cannot be switched conveniently. Therefore, how to realize the mutual switching between the projection mode and the illumination mode of the projection vehicle lamp is a problem which needs to be solved urgently at present.

Disclosure of Invention

The utility model provides a projection vehicle lamp and a vehicle projection system, wherein the projection vehicle lamp can be used for facilitating the mutual switching of the projection mode and the illumination mode of the projection vehicle lamp according to the requirements of a user.

In a first aspect, a projection vehicle lamp is provided, comprising: a light source; the light transmission module is used for transmitting the light beam generated by the light source to the Digital Micromirror Device (DMD); when the projection vehicle lamp is in a projection mode and a low beam illumination mode, the DMD is used for reflecting the light beam emitted by the light transmission module to the light output module through the plane mirror; when the projection vehicle lamp is in a high beam illumination mode, the DMD is used for reflecting the light beam emitted by the light transmission module to the light output module through a convex lens reflector; the light output module is used for projecting or illuminating the received light beam.

The digital micromirror device DMD is additionally arranged in the projection car lamp and comprises a plurality of rotating mirror surface modules, any one of the rotating mirror surface modules (namely a first rotating mirror surface module) comprises a convex transparent reflector and a plane reflector, when a user needs to project the projection car lamp, the first rotating mirror surface module rotates to the plane reflector, and the plane reflector reflects light beams emitted by the light transmission module to the light output module; when the user needs the projection car light to carry out the high beam illumination, first rotatory mirror surface module rotates to the convex lens speculum, and this convex lens speculum reflects the light beam of light transmission module outgoing to light output module, and it is thus visible, this projection car light can switch between projection mode and illumination mode based on user's demand.

Optionally, the light transmission module includes a collimation and shaping module, a light rod and a first convex lens, and the collimation and shaping module is configured to perform collimation and shaping on the light beam generated by the light source and transmit the collimated and shaped light beam to the light rod; the light bar is used for carrying out light mixing treatment on the light beams emitted by the collimation and shaping module; the first convex lens is used for focusing the light beams emitted by the light bar.

Optionally, the collimation and shaping module includes a collimating lens, a second convex lens and a concave lens, and the collimating lens is configured to collimate the light beam generated by the light source; the second convex lens is used for focusing the light beam emitted by the collimating lens; the concave lens is used for carrying out parallel light processing on the light beam emitted by the second convex lens.

Optionally, the projection vehicle light further comprises: and the TIR prism group is used for transmitting the light beam emitted by the light transmission module to the DMD and is also used for transmitting the light beam emitted by the DMD to the light output module.

Optionally, the light source comprises an RGB laser tube.

Optionally, the light source further comprises an infrared laser tube.

Optionally, the DMD includes a plurality of rotating mirror modules, a first rotating mirror module of the plurality of rotating mirror modules includes a convex mirror and a plane mirror, the convex mirror and the plane mirror are disposed on two parallel surfaces of the first rotating mirror module, and the first rotating mirror module is any one of the plurality of rotating mirror modules.

In a second aspect, a vehicle projection system is provided, comprising: the device comprises a central processing module, an image acquisition module, an image processing module, a communication module, a projection server, a DMD module, an optical module and a sensor module; the central processing module is respectively connected with the output end of the image acquisition module, the output end of the optical module and the transmission end of the image processing module, and is used for receiving an external operation instruction, processing the image data sent by the image acquisition module and processing the environmental light intensity data sent by the optical module; the image acquisition module is used for acquiring road condition images and identifying the road condition images; the image processing module is connected with the first communication end of the communication module and is used for controlling the working mode of the projection car lamp according to the control instruction sent by the central processing module; the projection server is connected with the second communication end of the communication module and used for storing projection resources; the communication module is connected with the input end of the DMD module and is used for processing communication information among the image processing module, the showing server and the DMD module; the DMD module is connected with the input end of the DMD and used for controlling the projection car lamp to switch to different working modes; the optical module is connected with the output end of the sensor module and is used for processing the environmental light intensity data sent by the sensor module; the sensor module is used for collecting the ambient light intensity data.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a projection vehicle lamp according to an embodiment of the present invention;

fig. 2 is a schematic view of a DMD mirror structure according to an embodiment of the utility model;

fig. 3 is a schematic structural diagram of a DMD mirror structure according to an embodiment of the present invention, which is a plane mirror;

fig. 4 is a schematic structural diagram of a DMD mirror structure according to an embodiment of the present invention, which is a convex lens;

fig. 5 is a schematic structural diagram of a control system of a projection vehicle lamp according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples. It should be understood that the specific embodiments of the present invention are illustrative only and are not limiting upon the present invention. In addition, only some structures, not all structures, relevant to the present invention are shown in the drawings, and therefore, in all the drawings of the present invention, the solid black dots on two intersecting lines indicate cross connection, and the solid black dots on two intersecting lines do not indicate cross disconnection.

With the increasing demand of people for automobile configuration, an automobile is not only a travel tool, but also one of entertainment devices for users to enjoy during a rest while traveling, for example, when a user drives to go out for playing, the user can use the projection function of the automobile lamp to watch movies or entertainment videos, and the projection function of the existing automobile lamp is to install a projector unit in the automobile front lamp and use the automobile front lamp as a light source of the projector to realize that the automobile front lamp has the projection function. If a user wants to use the automobile headlamp with the projection function for illumination, the projection function of the automobile headlamp needs to be turned off first to turn on the illumination function of the automobile headlamp, so that the projection function of the automobile headlamp cannot be conveniently switched to the illumination function. Therefore, how to realize the mutual switching between the projection mode and the illumination mode of the projection vehicle lamp is a problem which needs to be solved urgently at present.

Fig. 1 is a schematic structural diagram of a projection vehicle lamp provided in an embodiment of the present invention, where the projection vehicle lamp includes:

a light source 101; a light transmission module 102, configured to transmit a light beam generated by the light source 101 to the DMD 103; the DMD103 includes a plurality of rotating mirror modules, a first rotating mirror module of the plurality of rotating mirror modules includes a convex half mirror and a plane mirror, the convex half mirror and the plane mirror are disposed on two parallel surfaces of the first rotating mirror module, and the first rotating mirror module is any one of the plurality of rotating mirror modules; the first rotating mirror module is used for reflecting the light beam emitted from the light transmission module 102 to the light output module 105 through the plane mirror when the projection car light is in the projection mode and the low beam illumination mode; when the projection vehicle lamp is in the high beam illumination mode, the first rotating mirror module is configured to reflect the light beam emitted from the light transmission module 102 to the light output module 105 through the convex reflective mirror.

Illustratively, the light source 101 is a light beam emitted by a laser tube, and the light source 101 includes an RGB laser tube (i.e., an RGB three-color laser tube), wherein the RGB three-color laser tube may emit three-color laser beams composed of red light, green light, and blue light, and the three-color laser beams may be used not only for a light source for vehicle lamp illumination but also for a light source for vehicle lamp projection. In addition, the light source 101 further includes an Infrared (IR) laser tube, which can emit IR laser light for detecting road conditions instead of illumination, for example, a projection vehicle lamp can identify the surrounding environment during driving, such as the surrounding vehicles and obstacles during driving, by receiving the returned IR light beam.

Illustratively, the light transmitting module 102 is configured to transmit a light beam generated by the light source 101 to a Digital Micromirror Device (DMD) 103. For example, the three-color laser beams emitted from the RGB three-color laser tube are mixed by the light transmission module 102 to output white light, and the white light is transmitted (e.g., refracted) to the DMD, which transmits (e.g., refracts and reflects) the white light to the light output module 105.

Illustratively, the light transmission module 102 includes a collimation and shaping module, a light rod 1024 and a first convex lens 1025, wherein the collimation and shaping module is configured to collimate and shape the light beam generated by the light source 101 and transmit the collimated and shaped light beam to the light rod 1024; the optical rod 1024 is used for mixing light beams emitted by the collimation and shaping module; the first convex lens 1025 is used for focusing the light beam emitted from the light bar 1024. For example, after the three-color laser beam emitted by the RGB three-color laser tube is subjected to beam collimation processing, beam shaping, and homogenization processing by the collimation shaping module, the collimated and shaped three-color laser beam is output, and after the collimated and shaped three-color laser beam is subjected to light mixing processing by the light bar 1024, a white light beam is output, wherein the cross section of the light bar 1024 is rectangular, and the length and width of the rectangle are consistent with the length and width of the digital micromirror array. The white light beam output by the light stick 1024 is a rectangular white light beam, which is transmitted to the first convex lens 1025 for focusing and generating a focused light beam, which is reflected by the DMD103 and generates a reflected light beam, and the reflected light beam is illuminated or projected by the light transmission module 105. The light output module 105 is a convex lens, and the reflected light beam is focused by the convex lens and then is illuminated or projected.

Illustratively, the collimation shaping module includes a collimation lens 1021, a second convex lens 1022 and a concave lens 1023, the collimation lens 1021 is used for collimating the light beam generated by the light source 101; the second convex lens 1022 is used for focusing the light beam emitted by the straight lens 1021; the concave lens 1023 is used for parallel light processing of the light flux emitted from the second convex lens 1022. The collimating lens 1021 is a device that can change the light from each point in the aperture stop into a parallel collimated beam. The collimating lens 1021 is used to change the light beam (e.g., laser beam) generated by the light source 101 into a parallel collimated light column to reduce the beam divergence, thereby improving the efficiency of the light beam. For example, the three-color laser beam that RGB three-color laser pipe sent carries out the parallel laser beam of output three-color after the collimation of three-color laser beam through collimating lens 1021, the parallel laser beam of this three-color carries out the three-color laser beam after the focus processing through second convex lens 1022, this focus processing can reduce the divergence of the parallel laser beam of three-color, the three-color laser beam after this focus carries out a set of three-color parallel laser beam of output after light beam parallel processing through concave lens 1023, this three-color parallel laser beam is used for getting into optical wand 1024 and carries out the mixed light processing in order to obtain white light.

Illustratively, the projection vehicle lamp further includes a Total Internal Reflection (TIR) prism set 104 for transmitting the light beam emitted from the light transmission module to the DMD103, and for transmitting the light beam emitted from the DMD103 to the light output module 105. The TIR prism group 104 includes a lower TIR prism 1041 and an upper TIR prism 1042, and a gap exists between the lower TIR prism 1041 and the upper TIR prism 1042. For example, the light beam emitted from the light transmission module 102 is reflected to the DMD103 for the first time through the lower TIR prism 1041, the light beam is reflected for the first time through the DMD103 to generate a first reflected light beam, the first reflected light beam is reflected for the second time on the mirror surface of the DMD103 to generate a second reflected light beam, the second reflected light beam is reflected for the third time through the lower TIR prism 1041 to generate a third total reflected light beam, and the third total reflected light beam is reflected for the fourth time through the upper TIR prism 1042 to generate a fourth total reflected light beam, as shown in fig. 1. The fourth totally reflected beam passes through the light output module 103 to be illuminated or projected. The TIR prism group 104 reflects all the light beams passing through it as much as possible to reduce the light loss.

The DMD103 includes a plurality of rotating mirror modules, wherein a first rotating mirror module of the plurality of rotating mirror modules includes a convex mirror and a planar mirror, the convex mirror and the planar mirror are disposed on two parallel surfaces of the first rotating mirror module, and the first rotating mirror module is any one of the plurality of rotating mirror modules. For example, the DMD103 includes 36 rotating mirror modules each having two parallel surfaces (i.e., two positions of a plane mirror and a convex mirror), as shown in fig. 2, the first rotating mirror module is any one of the 36 rotating mirror modules, and then one parallel surface of the first rotating mirror module is a plane mirror (as shown in fig. 3) and the other parallel surface is a convex mirror (as shown in fig. 4), wherein the plane mirror and the convex mirror are switched by a rotating device (not shown in fig. 2). The rotating device may be a rotating shaft or other components having a rotating function, and the present application is not limited thereto. When the projection car light is in different working modes, the positions of the mirror surfaces turned over by the first rotating mirror surface are different.

For example, when the projection vehicle lamp is in the projection mode and the low-beam illumination mode, the 36 rotating mirror modules in the DMD103 are all turned over to the plane mirror, as shown in fig. 3, at this time, the DMD103 is configured to output a total reflection light beam after the light beam emitted from the light transmission module 102 passes through the TIR prism group for total reflection through the 36 plane mirrors, and the total reflection light beam passes through the light output module 103 for low-beam illumination or projection; when the projection car light is in the high beam illumination mode, the 36 rotating mirror modules in the DMD103 are all turned over to the convex transparent reflector, as shown in fig. 3, at this time, the DMD103 is configured to output a total reflection light beam after the light beam emitted from the light transmission module 102 is totally reflected by the TIR prism group through the 36 convex transparent reflectors, and the total reflection light beam is subjected to high beam illumination through the light output module 103. Therefore, the projection vehicle lamp can be switched between the projection mode and the illumination mode based on the requirements of users.

Having described a specific lamp structure of a projection lamp, a vehicle projection system will be described, as shown in fig. 5, which includes: the device comprises a central processing module, an image acquisition module, an image processing module, a communication module, a projection server, a DMD module, an optical module and a sensor module; the central processing module is respectively connected with the output end of the image acquisition module, the output end of the optical module and the transmission end of the image processing module, and is used for receiving an external operation instruction, processing the image data sent by the image acquisition module and processing the environmental light intensity data sent by the optical module; the image acquisition module is used for acquiring road condition images and identifying the road condition images; the image processing module is connected with the first communication end of the communication module and used for controlling the working mode of the projection vehicle lamp according to the control instruction sent by the central processing module; the showing server is connected with the second communication end of the communication module and is used for storing showing resources; the communication module is connected with the input end of the DMD module and is used for processing communication information among the image processing module, the projection server and the DMD module; the DMD module is connected with the input end of the DMD and used for controlling the projection vehicle lamp to switch to different working modes; the optical module is connected with the output end of the sensor module and is used for processing the environmental light intensity data sent by the sensor module; and the sensor module is used for acquiring the light intensity data of the environment.

For example, the external operation instruction refers to an operation instruction input by a user through an external input module, for example, in the night driving process, if the user encounters a road section with poor lighting condition, the projection vehicle lamp needs to be switched from the current low beam mode to the high beam mode, and at this time, the user may input the operation instruction of the high beam mode through the external input module; when a road section with good lighting condition is encountered, the projection vehicle lamp needs to be switched from the current high beam mode to the low beam mode, and at the moment, the user inputs an operation instruction of the low beam mode through the external input module.

Illustratively, the central processing module generates a corresponding control instruction after receiving an operation instruction input by a user from the external input module, and the control instruction is used for controlling the switching of the working mode of the projection vehicle lamp. The central processing module sends the control instruction to a transmission end of the image processing module, and the transmission end of the image processing module can be used as an input end or an output end and is used for receiving the control instruction sent by the central processing module. When the transmission end of the image processing module receives an operation instruction, the transmission end is used as an input end; when the transmission end of the image processing module sends an operation instruction outwards, the transmission end serves as an output end. The image processing module receives the control instruction and sends the control instruction to the communication module, the communication module sends the control instruction to the DMD module after receiving the control instruction, and the DMD module switches the mirror structure of the DMD103 of the projection vehicle lamp to a target mirror (for example, a convex lens mirror) according to the control instruction, and at this time, the projection vehicle lamp is switched from the current working mode to a target working mode (for example, a high beam working mode).

Illustratively, if the current projection vehicle lamp is in the projection mode, if the central processing module receives an operation instruction input by a user and switched to the high beam illumination mode, the central processing module generates a control instruction switched to the high beam illumination mode according to the operation instruction and sends the control instruction to the image processing module, at this time, the image processing module sends the control instruction to the communication module, the communication module sends the received control instruction to the DMD control module, the DMD module switches the mirror structure of the DMD103 of the projection vehicle lamp to the convex transparent reflector according to the control instruction, and at this time, the projection vehicle lamp is switched to the high beam illumination mode from the current projection mode.

Illustratively, the image acquisition module is configured to acquire a road condition image and identify the road condition image. The image acquisition module can be a camera outside the vehicle or an infrared imaging device, and the application does not limit the utility model. Taking the image acquisition module as a camera as an example, the camera is used for shooting the road condition of the vehicle in the driving process in real time and identifying the road condition image, so that the central processing module can judge whether to switch the working mode of the current projection vehicle lamp according to the identification result of the road condition image sent by the image acquisition module. For example, at night, a vehicle a and a vehicle B are traveling in opposite directions, and the respective projection lamps of the two vehicles are currently in a high beam mode, and as the vehicle a and the vehicle B get closer, the camera captures the current road condition and identifies the brightness of the road condition image. The camera recognizes the road condition image and finds that the road condition image has higher and higher brightness. At this time, the camera sends the recognition result that the road condition image brightness is higher and higher to the central processing module. When the central processing module receives the identification result, the central processing module can automatically generate a control instruction for switching to a low beam mode and send the control instruction to the image processing module, the image processing module is connected with a first communication end of the communication module, the image processing module sends the control instruction to the communication module through the first communication end of the communication module, the communication module sends the control instruction to the DMD module, the DMD module switches the mirror structure of the DMD103 of the projection vehicle lamp to the plane reflector according to the control instruction, and at the moment, the projection vehicle lamp is switched to the low beam mode from the current high beam mode.

For example, when a vehicle a travels in a dark traveling environment, the projection lamp is turned on in a high beam mode, and when the vehicle a travels from the dark traveling environment to an open traveling environment, the camera captures the current road condition and recognizes that the current road condition image results in a good road condition. At this moment, the camera sends the recognition result of good road conditions to the central processing module, the central processing module automatically generates a control instruction for switching a low beam mode according to the recognition result, and sends the control instruction to the image processing module, the image processing module sends the control instruction to the communication module through a first communication end of the communication module, the communication module sends the control instruction to the DMD module, the DMD module switches the mirror structure of the DMD103 of the projection vehicle lamp to the plane mirror according to the control instruction, and at this moment, the projection vehicle lamp is switched to the low beam mode from the current high beam mode. When the vehicle a drives from the open driving environment to the dark driving environment, the central processing module controls the projection vehicle lamp to switch from the current low beam mode to the high beam mode, which is the same as the mode of the projection vehicle lamp switching from the current high beam mode to the low beam mode, and is not described herein again.

Illustratively, the sensor module is configured to collect ambient light intensity data. The sensor module comprises a plurality of sensors, for example, one or more of a light intensity sensor or a color sensor, and is arranged in the lamp or attached to the outside of the vehicle body, wherein the light intensity sensor is used for acquiring brightness light intensity data of the surrounding environment, and the color sensor is used for acquiring color light intensity data of the surrounding environment. The above-mentioned ambient light intensity data may be brightness light intensity data or color light intensity data, and this application does not limit this. And the optical module is connected with the output end of the sensor module and is used for processing the environmental light intensity data sent by the sensor module. For example, the sensor module is a light intensity sensor, when a vehicle a travels at night, the brightness of the road condition image collected by the image collection module (for example, the camera) is very low, the camera cannot accurately identify the traveling conditions of other vehicles around the vehicle a in the road condition image, at this time, the light intensity sensor can collect the ambient brightness light intensity data around the vehicle a, the light intensity sensor sends the collected ambient brightness light intensity data to the optical module, the optical module sends the ambient brightness light intensity data to the central processing module, and the central processing module corrects the brightness of the road condition image collected by the image collection module according to the ambient brightness light intensity data.

For example, the sensor module is the color sensor, and the color sensor is used for gathering the colour light intensity data of surrounding environment, and the color sensor sends the colour light intensity data of gathering the surrounding environment for optical module, and optical module sends this colour light intensity data to central processing module again, and central processing module revises the colour of the road conditions image that image acquisition module gathered according to this colour light intensity data to promote the recognition accuracy of image acquisition module to the road conditions image. For example, under the condition that the light intensity of sunlight is high in the daytime, the brightness of the road condition image collected by the image collection module (for example, a camera) is higher, and at this time, the color light intensity data collected by the color sensor can be used for correcting the color brightness of the road condition image, or the average light intensity within 24h is used for correcting the color brightness of the road condition image.

For another example, at night, when the vehicle is driving, and the image acquisition module is acquiring the road condition image at night, because the light at night is insufficient, the brightness of the road condition image acquired by the image acquisition module is relatively low, so that the image acquisition module cannot accurately identify the driving road condition in the road condition image, at this time, the central processing module can utilize the color light intensity data acquired by the color sensor as a supplement to enhance the color brightness of the acquired road condition image, so as to improve the identification precision of the road condition image.

For another example, at night, when the vehicle is driving, if the street lamps around the road section are yellow street lamps, the yellow light source can make the road condition image collected by the image collecting module yellow, and at this time, the central processing module can correct the color cast of the road condition image by using the difference between the yellow light intensity collected by the color sensor and the yellow light intensity in the reference light intensity.

For another example, when the projection car light is in the projection mode, the color sensor can also acquire color light intensity data of the surrounding environment of the projection position in real time and send the color light intensity data to the optical module, the optical module sends the received color light intensity data to the central processing module, and the central processing module corrects the image color brightness of the projected video in real time according to the color light intensity data.

For example, the optical module may be further configured to process an operating state of the sensor module, for example, when a user turns on or off the vehicle, the central processing module sends a control command for turning on or off the sensor module to the optical module, the optical module sends the control command to the sensor module, and the sensor module starts or stops operating. For example, if the central processing module sends a control instruction for turning on the color sensor module to the optical module, the optical module controls the color sensor to start working according to the control instruction; and if the central processing module sends a control instruction for closing the color sensor module to the optical module, the optical module controls the color sensor to stop working according to the control instruction.

For example, the central processing module may determine whether to control the projection vehicle lamp to switch the working modes according to the ambient light intensity data collected by the sensor module. For example, in a case that the projection car light is in an illumination mode, if the ambient light intensity collected by the sensor module (for example, the light intensity sensor) gradually increases, the central processing module generates a control instruction according to the ambient light intensity data collected by the sensor module sent by the optical module, the control instruction is sent to the image processing module and the communication module in sequence, the communication module sends the control instruction to the DMD module, and the DMD module controls the DMD mirror structure of the projection car light to be switched to the plane mirror according to the control instruction, where the projection car light is in a low beam mode; if the ambient light intensity collected by the sensor module (for example, the light intensity sensor) is continuously kept at a low level, the central processing module generates a control instruction according to the ambient light intensity data collected by the sensor module sent by the optical module, the control instruction is sent to the image processing module and the communication module in sequence, the communication module sends the control instruction to the DMD module, the DMD module controls the DMD mirror structure of the projection car lamp to be switched into the convex lens according to the control instruction, and the projection car lamp is in a high beam mode at the moment.

Illustratively, the central processing module combines the light intensity data collected by the light intensity sensor and the road condition image data collected by the image collection module to improve the recognition accuracy of the image collection module on the road condition image data. For example, the central processing module compares the brightness in the road condition image with the ambient brightness structure collected by the light intensity sensor, or compares the color ratio in the road condition image with the color ratio identified by the color sensor to correct the brightness and color of the road condition image.

Illustratively, the image processing module is used for image processing and data transmission. The communication module is used for communication scheduling and is responsible for communication scheduling among the image processing module, the projection server and the DMD module so as to avoid communication conflicts among different modules. The projection server is connected with the second communication end of the communication module and used for storing projection resources, wherein the projection resources comprise traffic sign images, entertainment videos and videos of a camera. The communication module is connected with the input end of the DMD module and used for scheduling communication between different modules and the DMD module so as to avoid conflict among different communication instructions and influence the normal work of the DMD module.

For example, when the user wants to use the projection function of the projection car light, the projection operation command can be input through the external input module, the projection operation instruction is sent to the central processing module by the external input module, the central processing module generates a projection control instruction according to the projection operation instruction and sends the projection control instruction to the image processing module, the image processing module generates a projection resource acquisition instruction (such as an entertainment video acquisition instruction) and a projection showing instruction according to the projection control instruction, and sending the projection resource acquisition instruction and the projection showing instruction to the communication module, sending the projection resource acquisition instruction to the showing server by the communication module through the second communication terminal, and obtaining corresponding showing resources (such as entertainment videos) by the showing server according to the projection resource acquisition instruction and sending the showing resources to the communication module through the second communication terminal. The communication module sends the received projection resources and the projection instructions to the input end of the DMD module, the DMD module controls the mirror structure of the DMD103 to be switched to the plane mirror structure according to the received projection instructions, at the moment, the DMD module projects the projection resources to a target position through the plane mirror of the DMD103, and the target position can be a wall surface or a screen.

For example, if two operation instructions are sent to the communication module in the same unit time period, after the communication module receives the two operation instructions, only one operation instruction is sent to the DMD module each time, instead of sending the two operation instructions to the DMD module together. For example, in the same unit time period, there are two operation instructions, which are a high beam switching instruction and a projection showing instruction, respectively, and if the two operation instructions are sent to the communication module at the same time, the communication module does not send the two operation instructions to the DMD module at the same time, but only sends one operation instruction at each time, and sends another instruction after the DMD module executes the operation instruction, so as to avoid that the normal operation of the DMD is affected by sending the two operation instructions to the DMD module at the same time.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the above-described embodiments, or equivalents may be substituted for some of the features of the embodiments, and such modifications or substitutions are not to be construed as essential to the spirit and scope of the embodiments of the present invention.

Claims (7)

1. A projection vehicle light, comprising:

a light source;

the light transmission module is used for transmitting the light beam generated by the light source to the Digital Micromirror Device (DMD);

when the projection vehicle lamp is in a projection mode and a low beam illumination mode, the DMD is used for reflecting the light beam emitted by the light transmission module to the light output module through the plane mirror;

when the projection vehicle lamp is in a high beam illumination mode, the DMD is used for reflecting the light beam emitted by the light transmission module to the light output module through a convex lens;

the light output module is used for projecting or illuminating the received light beam.

2. The projection vehicle light of claim 1 wherein the light delivery module comprises a collimation shaping module, a light rod, and a first convex lens,

the collimation and shaping module is used for collimating and shaping the light beam generated by the light source and transmitting the collimated and shaped light beam to the light bar;

the light bar is used for carrying out light mixing treatment on the light beams emitted by the collimation and shaping module;

the first convex lens is used for focusing the light beams emitted by the light bar.

3. The projection vehicle light of claim 2 wherein the collimation shaping module comprises a collimating lens, a second convex lens, and a concave lens,

the collimating lens is used for collimating the light beam generated by the light source;

the second convex lens is used for focusing the light beam emitted by the collimating lens;

the concave lens is used for carrying out parallel light processing on the light beam emitted by the second convex lens.

4. The projection vehicle light of any of claims 1-3, further comprising:

and the TIR prism group is used for transmitting the light beam emitted by the light transmission module to the DMD and is also used for transmitting the light beam emitted by the DMD to the light output module.

5. The projection vehicle light of any of claims 1-3, wherein the light source comprises an RGB laser tube.

6. The projection vehicle light of claim 5 wherein the light source further comprises an infrared laser tube.

7. The projection vehicle light of claim 1, wherein the DMD comprises a plurality of rotating mirror modules, a first rotating mirror module of the plurality of rotating mirror modules comprises a convex half mirror and a flat half mirror, the convex half mirror and the flat half mirror are disposed on two parallel surfaces of the first rotating mirror module, and the first rotating mirror module is any one of the plurality of rotating mirror modules.

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