CN110971885A - Projection system and method for adjusting color temperature and brightness by projection detection - Google Patents

Abstract

The invention provides a projection system and a method for projection detection and adjustment of color temperature and brightness, wherein an illumination module is started to project to form a projection light path, the illumination module faces a detection module to form a detection light path, an included angle exists between the detection light path and the projection light path, the detection module collects data of the detection light path to generate a detection result related to light in the projection light path, a feedback adjustment module is controllably connected to the illumination module, and the feedback adjustment module adjusts the light in the projection light path projected by the illumination module based on the detection result.

Description

Projection system and method for adjusting color temperature and brightness by projection detection

Technical Field

The invention relates to the field of projection imaging, in particular to a projection system and a method for adjusting color temperature and brightness by projection detection.

Background

A Projection Graphic Unit (PGU) system is a system that projects an image, wherein the PGU system has both illumination and Projection functions. The PGU system is mainly applied to a projection apparatus, and is a main functional device of the projection apparatus. With the development of technology, PGU systems are also increasingly applied to other fields, for example, PGUs are applied to vehicle projection systems, and image information is displayed at the windshield of a vehicle in a projection manner by the PGU systems.

The core of the existing PGU system is to project a corresponding image frame through a Digital Micro mirror Device (DMD) by using a rgb (red Green blue) three-color light source with a certain ratio. The light source has the problem that the luminous color temperature and brightness of the light source fluctuate along with the change of the working temperature, and the larger the temperature difference is, the larger the fluctuation is, so that the projection effect of the PGU projection system fluctuates. Particularly, when the PGU system is operated for a long time or in an environment with a large temperature difference, the projection effect of the PGU is often poor, and the projected image is distorted. Therefore, in order to ensure that the PGU projection system can ensure a good projection effect in the actual working process, a detection device is usually disposed inside the PGU projection system or in the optical path of the projection light. The detection device detects the brightness and color temperature of the light projected outwards by the PGU system, and the like, so that the projection effect of the PGU system can be timely adjusted according to the detection result.

However, the detection device disposed in the optical path of the projected light of the PGU projection system may not only affect the overall light efficiency. In addition, the projection effect of the PGU projection system is related to the projected ambient light. Normally, when the external environment is bright, the projected image of the PGU is affected by the external environment. When the external environment is dark, the projected image of the PGU projection system is brighter. In the prior art, the PGU projection system cannot adjust the light brightness of the PGU projection system in time according to the intensity of external ambient light.

Disclosure of Invention

One of the main advantages of the present invention is to provide a projection system and a method for adjusting color temperature and brightness by projection detection, wherein the projection system can adjust the brightness and color temperature of the light source of the projection system in real time to adapt to the projection environment, stabilize the output display effect, and ensure the display stability.

Another advantage of the present invention is to provide a projection system and a method for adjusting color temperature and brightness by projection detection, wherein the projection system detects the brightness and color temperature of a light source through a detection module, and adjusts the light source based on the detection result, thereby improving the projection effect of the projection system, correcting the light of the light source, and ensuring the consistency of the output display effect in real time.

Another advantage of the present invention is to provide a projection system and a method for adjusting color temperature and brightness by projection detection, wherein the projection system detects the brightness and color temperature of a light source in real time through a detection module, and adjusts and controls the light source in real time according to the detection result, thereby maintaining a good illumination effect.

Another advantage of the present invention is to provide a projection system and a method for adjusting color temperature and brightness by projection detection, wherein a light sensing chip of the detection module is disposed outside a normal projection light path of the projection system, so as to avoid affecting an overall light efficiency of the projection system, obtain a most direct data source without affecting a display, and provide a premise for reliability and accuracy of control.

Another advantage of the present invention is to provide a projection system and a method for adjusting color temperature and brightness by projection detection, wherein the detection module is further used for detecting ambient light of the projection environment and adjusting the brightness and color temperature of the light source of the projection system according to the ambient light, so as to improve the projection effect, ensure the light energy required for normal image display, not reduce the quality of the normal image display, and avoid additional adverse effects.

Another advantage of the present invention is to provide a projection system and a method for projection detection of adjusted color temperature and brightness, wherein a display chip of the projection system forms a detection light path when in a closed state, and light of the detection light path is projected to the photosensitive chip so that the light source of the projection system is detected by the photosensitive chip.

Another advantage of the present invention is to provide a projection system and a method for adjusting color temperature and brightness by projection detection, wherein a detection position of a light sensing chip is disposed behind a detection light path of a display chip, and the brightness and the color temperature of a projection light path of the projection system are measured without affecting the projection effect of the projection system.

Another advantage of the present invention is to provide a projection system and a method for projection detection to adjust color temperature and brightness, wherein the photosensitive chip is mounted on a surface of a prism of the projection system, and the prism projects light of the detection light path to the photosensitive chip, so that the photosensitive chip detects a light source of the projection system.

Another advantage of the present invention is to provide a projection system and a method for projecting, detecting, and adjusting color temperature and brightness, wherein the photosensitive chip is fixedly disposed on a projection apparatus of the projection system, and the prism projects light of the detection light path to the photosensitive chip, so that the photosensitive chip detects a light source of the projection system.

Additional advantages and features of the invention will be set forth in the detailed description which follows and in part will be apparent from the description, or may be learned by practice of the invention as set forth hereinafter.

In accordance with one aspect of the present invention, the foregoing and other objects and advantages are achieved in a projection system comprising:

an illumination module, wherein the illumination module is turned on to project a projection light path;

the detection module is used for forming a detection light path facing the detection module, wherein an included angle exists between the detection light path and the projection light path, and the detection module is used for collecting data of the detection light path so as to generate a detection result related to light rays in the projection light path; and

a feedback adjustment module, wherein the feedback adjustment module is controllably connected to the illumination module, wherein the feedback adjustment module adjusts the light in the projected light path projected by the illumination module based on the detection result.

According to some embodiments of the present invention, the projection system further comprises a projection device, wherein the projection device receives the light of the projection optical path, and the light of the projection optical path is projected outward by the projection device to form an image.

According to some embodiments of the present invention, the detection module further comprises an illumination detection device, wherein the illumination detection device receives and detects the light projected through the detection light path in the illumination module.

According to some embodiments of the present invention, the detection module further comprises an environment detection device, wherein the environment detection device detects light of a projection environment in which the projection system is located.

According to some embodiments of the invention, the environment detection device detects brightness of light of an environment projected by the projection system.

According to some embodiments of the present invention, the illumination detection device detects performance parameters of light generated by the illumination module, wherein the optical performance parameters are selected from a group consisting of brightness, color temperature, and a monochromatic light ratio.

According to some embodiments of the invention, the lighting module further comprises:

at least one light source assembly; and

the imaging chip is adjustably switched between an open state and a closed state, when the imaging chip is in the open state, the imaging chip reflects the light projected by the light source component to form the projection light path, and when the imaging chip is in the closed state, the imaging chip reflects the light projected by the light source component to form the detection light path.

According to some embodiments of the invention, the imaging chip is a DMD chip.

According to some embodiments of the present invention, the light source assembly further comprises at least one light source and an optical assembly, wherein the optical assembly receives and integrates the light generated by the light source, and projects the light generated by the light source to the image chip.

According to some embodiments of the invention, the light source further comprises at least one red light source, at least one green light source and at least one blue light source, wherein the red light source, the green light source and the blue light source are monochromatic LED lamps.

According to some embodiments of the present invention, the optical assembly further comprises at least one collimating lens, a color filter, a homogenizing and shaping assembly, and at least one prism, wherein the light generated by the light source is collimated by the collimating lens, and then the collimated light is integrally projected to the homogenizing and shaping assembly through the color filter, wherein the homogenizing and shaping assembly finishes the light and projects the light to the prism, and wherein the light is projected to the display chip after passing through the prism.

According to some embodiments of the invention, the color filter means further comprises a red color filter, a green color filter, and a blue color filter, wherein the color filter means is a high-reflectance high-lens sheet, wherein the color filter means collects light generated from the light source.

According to some embodiments of the present invention, the homogenizing and shaping device is connected to the color filter device and the prism, and the homogenizing and shaping device guides the light to transmit to form a zigzag transmission track, wherein the homogenizing and shaping device further comprises a fly-eye device, a first relay lens, a reflector, and a second relay lens, wherein the fly-eye device is a fly-eye lens, and the uniformity and illumination brightness of the light are improved by the fly-eye device, and wherein the first relay lens, the second relay lens, and the reflector change the transmission direction of the light.

According to some embodiments of the present invention, the homogenizing and shaping device is connected to the color filter device and the prism, and the homogenizing and shaping device guides the light to transmit to form a U-shaped transmission track, wherein the homogenizing and shaping device further comprises a fly-eye device, a first relay lens, a reflector, and a second relay lens, wherein the fly-eye device is a fly-eye lens, and the uniformity and illumination brightness of the light are improved by the fly-eye device, and wherein the first relay lens, the second relay lens, and the reflector change the transmission direction of the light.

According to some embodiments of the present invention, the prism has an incident mirror surface, a transmission mirror surface, and an exit mirror surface, wherein the incident mirror surface receives the light projected by the homogenizing and shaping device, the projection mirror surface projects the light to the image display chip, when the image display chip is in the open state, the light is reflected by the image display chip and reflected at the incident mirror surface through the transmission mirror surface, so as to form the projection light path, and when the image display chip is in the closed state, the light is reflected by the image display chip and reflected through the transmission mirror surface, so as to form the detection light path.

According to some embodiments of the present invention, the prism is further provided with at least one projection light port, wherein the projection light port is formed on the exit mirror surface, and the projection light port allows light rays of the projection light path to be projected outward through the projection light port.

According to some embodiments of the invention, the illumination detection apparatus further comprises:

a mirror, wherein the mirror is disposed on the prism, and the mirror guides the light projection of the detection light path; and

and the light reflected by the reflector is projected to the photosensitive chip, and the performance data of the light is detected by the photosensitive chip.

According to some embodiments of the invention, the photosensitive chip is disposed in a mosaic manner in a non-exit area of the exit mirror.

According to some embodiments of the invention, the photosensitive chip is disposed on the projection device, and the projection device supports the photosensitive chip to collect light of the detection light path.

According to some embodiments of the present invention, the feedback adjusting module further comprises an information feedback module and a judgment adjusting module, wherein the information feedback module feeds back a detection result of the detecting module to the judgment adjusting module, and the judgment adjusting module analyzes whether the lighting module is in a normal lighting state or not and controls and adjusts the brightness, the color temperature and the ratio of the primary color light of the lighting module.

According to another aspect of the present invention, the present invention further provides a vehicle comprising:

a vehicle body; and

at least one of the projection systems, wherein the projection system is disposed on the vehicle body, and the projection system projects light to a windshield of the vehicle body.

According to another aspect of the present invention, the present invention further provides a method for projection detection to adjust color temperature and brightness, the method comprising the steps of:

(a) collecting light projected by a detection light path by a photosensitive chip;

(b) detecting performance data of the light to feed back a detection result; and

(c) and adjusting the brightness and the color temperature of the light source based on the detection result so as to perform projection imaging through a projection light path.

According to some embodiments of the invention, in the above method step (a), light of a projection environment in which the projection system is located is further collected.

According to some embodiments of the invention, the method step (b) comprises the steps of:

detecting the brightness and the color temperature of the light source and the proportion of each monochromatic light; and

and detecting the brightness of the projection environment light.

According to some embodiments of the invention, the step (c) further comprises the steps of:

(c.1) comparing the light performance of the light source with a set value based on the detection feedback result; and

if not, adjusting the brightness, color temperature and the ratio of each monochromatic light in real time according to the feedback result; and if so, waiting for updating the feedback result and returning to the step (c.1).

According to some embodiments of the invention, in method step (c.1), the light properties of the light source are selected from one or more of the brightness, color temperature and composition of the individual monochromatic light.

Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the claims.

Drawings

FIG. 1A is a system block diagram of a projection system according to a first preferred embodiment of the present invention.

FIG. 1B is a schematic diagram of optical path transmission of a projection system according to a first preferred embodiment of the present invention.

Fig. 2A is a schematic overall view of the projection system according to the above preferred embodiment of the present invention, wherein a display chip of the projection system is in a closed state.

Fig. 2B is a schematic overall view of the projection system according to the above preferred embodiment of the present invention, wherein a display chip of the projection system is in an on state.

FIG. 3A is a schematic view of a projection system with a display chip in a closed state according to a second preferred embodiment of the present invention.

FIG. 3B is a schematic diagram of the projection system with a display chip of the projection system in an on state according to the above preferred embodiment of the invention.

FIG. 4A is a schematic diagram of an alternative embodiment of the projection system according to the above preferred embodiment of the present invention, wherein a display chip of the projection system is in a closed state.

FIG. 4B is a schematic diagram of an alternative embodiment of the projection system according to the above preferred embodiment of the present invention, wherein a display chip of the projection system is in an on state.

Fig. 5 is a schematic view of an application of the projection system according to the above preferred embodiment of the present invention, wherein the projection system is applied to a vehicle.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to FIGS. 1A-2B of the drawings accompanying this specification, a projection system according to a first preferred embodiment of the invention is described in the following description. The projection system includes an illumination module 10, a detection module 30, and a feedback adjustment module 40. The lighting module 10 generates light, wherein the light generated by the lighting module 10 is processed and then projected to the external environment. The detection module 30 detects whether the light projected by the lighting module 10 is suitable for the current lighting environment, and generates a corresponding detection signal. The feedback adjusting module 40 is communicatively connected to the detecting module 30, and the feedback adjusting module 40 adjusts the light generated by the illuminating module 10 based on the detection signal generated by the detecting module 30 to adapt to the current illumination environment, so as to improve the projection effect of the projection system. Preferably, the projection system is a PGU projection system.

It is worth mentioning that the detection module 30 detects the optical properties of the light of the illumination module 10 and the projection environment, wherein the optical properties include the brightness, the chromaticity, the saturation, the color temperature of the light, and the like. Preferably, the detecting module 30 detects the brightness and the color temperature of the light and the ratio of each monochromatic light in the light.

The projection system further comprises a projection device 20, wherein the projection device 20 is kept in the projection direction of the illumination module 10, and the light generated by the illumination module 10 is projected to the external environment by the projection device 20.

It should be noted that the detecting module 30 monitors the change of the brightness and the color temperature of the light generated by the lighting module 10 by detecting the brightness and the color temperature of the light generated by the lighting module 10, and generates a corresponding detecting signal according to the current change of the brightness and the color temperature of the lighting module 10, and controls and adjusts the lighting module 10 by the feedback adjusting module 40. The detection module 30 further detects the brightness of the light of the projection environment of the projection system, so as to adjust the brightness and the color temperature of the light generated by the illumination module 10 according to the change of the current environment brightness, thereby keeping the projection system with a good projection effect.

As shown in fig. 1A and fig. 1B, the detecting module 30 further includes an illumination detecting device 31 and an environment detecting device 32, wherein the illumination detecting device 31 detects the brightness and the color temperature of the light generated by the illumination module 10 of the projection system, and the feedback adjusting module 40 adjusts the light generated by the illumination module 10 based on the detection result of the illumination detecting device 31. The environment detection device 32 detects the brightness and color temperature of the light of the projection environment of the projection system, so that the feedback adjustment module 40 adjusts and controls the brightness and color temperature of the light projected by the illumination module 10 based on the detection result of the environment detection device 32.

As shown in fig. 2A and 2B, the illumination module 10 is provided with at least one detection light path 101 and at least one projection light path 102, wherein the projection light path 102 projects the light generated by the illumination module 10 to the projection device 20, and the projection device 20 projects the light in the projection light path 102 to the external environment. Accordingly, the detection light path 101 guides the light generated by the illumination module 10 to the detection module 30, the detection module 30 detects the brightness and color temperature of the light of the illumination module 10, and the detection module 30 monitors the light of the detection light path 101 in real time. The detection light path 101 and the projection light path 102 are formed by projection of the illumination module 10, and an included angle exists between the detection light path 101 and the projection light path 102. In other words, the detection optical path 101 and the projection optical path 102 formed by the illumination module 10 project light to different directions or different areas.

It is understood that the light of the detection light path 101 is collected to detect the optical performance data of the light projected by the illumination module 10, such as the brightness, color temperature and ratio of monochromatic light, and the light of the projection light path 102 is not blocked. Therefore, the light projected outward by the projection system is directly projected to the projection device 20, and the projection effect of the projection system is not affected by the detection module 30.

It should be noted that the projection system projects the light of the detection light path 101 to the detection module 30, so that the detection module 30 detects the optical performance of the light generated by the light source, wherein when the detection module 30 collects the unstable optical performance of the light of the detection light path 101, or when the unstable optical performance of the light is different from the illumination or projection parameters set by the current illumination module 10, the data information collected by the detection module 30 from the detection light path 101 is used to regulate and control the optical performance of the light of the projection light path 102. And under the condition of not influencing the illumination effect of the projection light path, the stability of the projection light of the projection system is maintained.

It should be noted that the illumination detection device 31 of the detection module 30 receives the light of the detection light path 101 of the illumination module 10, and the illumination detection device 31 does not affect the projection light path 102 of the illumination module 10 to project the light to the external environment. Therefore, the detection module 30 does not affect the overall light efficiency of the projection system. Preferably, the illumination detection device 31 of the detection module 30 is disposed between the illumination module 10 and the projection device 20, wherein the illumination detection device 31 receives the light projected by the detection light path 101 of the illumination module 10. The environment detection device 32 of the detection module 30 receives the ambient light of the projection system illuminating the projection environment.

As shown in fig. 1A to 2B, the illumination module 10 further includes at least one light source module, and at least one image chip 13, wherein the light source module further includes at least one light source 11 and an optical assembly 12. The light source 11 of the lighting module 10 generates light and projects the generated light to the optical assembly 12, and the light projected from the light source 11 is integrally processed by the optical assembly 12. The optical component 12 integrates and processes the light generated by the light source 11 and then projects the light to the image display chip 13, and the image display chip 13 reflects the light to form the detection light path 101 and the projection light path 102, wherein the detection light path 101 guides the light generated by the light source 11 to the illumination detection device 31 of the detection module 30, and the projection light path 102 guides and projects the light generated by the light source 11 to the projection device 20.

It should be noted that the illumination detection device 31 of the detection module 30 detects the optical performance of the light of the detection light path 101, and adjusts the light projected by the illumination module 10 based on the detection result, so as to adjust the optical performance of the light projected by the projection system through the projection light path 102.

The image display chip 13 can be adjustably switched between an open state and a closed state, when the image display chip 13 is in the open state, the image display chip 13 reflects the light projected by the optical component 12 to form the projection light path 102, wherein the light is projected to the projection device 20 along the projection light path. Accordingly, when the image display chip 13 is in the closed state, the image display chip 13 reflects the light projected by the optical component 12 to form the detection light path 101, and the light is projected to the illumination detection device 31 along the detection light path.

Preferably, the display chip 13 is a DMD chip, and is in the ON state of the DMD chip when the display chip 13 is in the open state, and is in the OFF state of the DMD chip when the display chip 13 is in the closed state.

It should be mentioned that the display chip 13 is an integrated micro-electromechanical upper layer structure circuit unit with mirror reflection, wherein when the display chip 13 is in the open state, the mirror of the display chip 13 rotates +12 ° to form the projection light path 102, and the lens of the display chip 13 projects light to the projection device 20. Accordingly, the projection device 20 displays a bright state when the display chip 13 is in the on state, that is, light is projected outward. When the development chip is in the closed state, the reflector of the development chip 13 rotates by-12 ° to form the detection light path 101, and the development chip 13 projects light to the illumination detection device 31 along the detection light path 101. Accordingly, when the image display chip 13 is in the closed state, the projection device 20 displays a dark state.

The illumination detection device 31 is configured to be installed after the image development chip 13 forms the optical path, and the illumination detection device 31 detects the light formed by the image projected from the illumination module 10 to the image development chip 13. Therefore, the illumination detection device 31 collects the light information closest to the projection effect, and adjusts the projection effect of the illumination module 10 to be more stable by the detection information.

As shown in fig. 2A and 2B, the light source 11 of the illumination module 10 generates light and projects the generated light to the optical assembly 12. Preferably, the light source 11 is an LED lamp. Alternatively, the light source 11 may also be another type of light source device, such as a xenon lamp, a mercury high pressure lamp, or the like. It is worth mentioning that the type of light source 11 is only exemplary and not limiting herein. More preferably, the light sources 11 are single-color LED light sources, that is, each of the LED light sources generates and projects single-color light outwards. Alternatively, the light source 11 may also be implemented as a polychromatic light or a light fixture that is a white light source.

Most preferably, the light source 11 of the lighting module 10 further includes a red light source 111, a green light source 112, and a blue light source 113, wherein the red light source 111, the green light source 112, and the blue light source 113 are monochromatic light sources. The red light source 111 of the light source 11 is arranged to produce red monochromatic light; wherein the green light source 112 is configured to produce green monochromatic light; wherein the blue light source 113 is arranged to produce blue monochromatic light. It is noted that the number of the monochromatic light sources included in the light source 11 is only exemplary here and should not be construed as a limitation of the present invention. Therefore, the number of the monochromatic light sources of the light source 11 may also be 1, 2 or more, and the number of the monochromatic light sources is not limited herein. The light source 11 may also comprise other kinds of monochromatic or polychromatic light sources.

The light beams generated by the red light source 111, the green light source 112 and the blue light source 113 of the light source 11 are respectively projected to the optical assembly 12, and the light beams projected by the light source 11 are integrally processed by the optical assembly 12. The optical component 12 projects the light after the integration processing to the image display chip 13, and the light after the integration processing of the optical component is projected to the projection device through the projection light path 102 by the image display chip 13, or is projected to the illumination detection device 31 through the detection light path 101.

It should be noted that the illumination detection device 31 of the detection module 30 can detect the brightness and the color temperature of each of the monochromatic light sources 11 and the ratio of the lights of the plurality of monochromatic light sources of the light source 11 to detect whether the light emitted by the illumination module 10 is abnormal. When the illumination detection device 31 detects that the brightness and the color temperature of any one of the monochromatic light sources of the light source 11 and the ratio between the monochromatic light sources are abnormal, the illumination detection device 31 feeds back the brightness and the color temperature to the feedback adjustment module 40, and the feedback adjustment module 40 adjusts the brightness, the color temperature, the light color ratio between the monochromatic light sources, and the like of the monochromatic light source 11.

As shown in fig. 2A and 2B, the optical assembly 12 further includes at least one collimating lens 121, at least one color filter 122, a homogenizing and shaping assembly 123, and a prism 124, wherein the light generated by the light source 11 is collimated by the collimating lens 121 and then reflected by the color filter 122 into the homogenizing and shaping assembly 123. The homogenizing and shaping assembly 123 rectifies the light projected from the filter device 122 to form a suitable light transmission path, and the light is projected to the prism 124 by the homogenizing and shaping assembly 123. The prism 124 receives the light projected by the homogenizing and shaping component 123 and projects the light to the image display chip 13, wherein when the image display chip 13 is in the open state, the light is reflected by the image display chip to form the projection light path 102 and projects the light to the projection device 20; when the image display chip 13 is in the closed state, the light is reflected by the image display chip 13 to form the detection light path 101, and the light is projected to the illumination detection device 31 along the detection light path.

In detail, the collimating optic 121 of the optical assembly 12 is configured to collimate the light generated by the light source 11. Preferably, the optical assembly 12 includes three collimating lenses 121, wherein the collimating lenses 121 are maintained in the projection directions of the red light source 111, the green light source 112 and the blue light source 113 of the light source 11, the collimating lenses 121 collimate the light projected from the light source 11, and the collimating lenses 121 project the collimated monochromatic light to the color filter 122.

As shown in fig. 2A and 2B, the color filter device 122 of the optical assembly 12 is used to reflect the monochromatic light projected by the collimating lens 121 and to project complementary color light of the monochromatic light. Accordingly, the color filter device 122 further includes a red color filter 1221, a green color filter 1222, and a blue color filter 1223. The red color filter 1221, the green color filter 1222, and the blue color filter 1223 are high-reflection high-lens sheets. Preferably, the red color filter 1221 is capable of reflecting red light, allowing green light and blue light to pass therethrough; the green color filter 1222 can reflect green light and allow red and blue light to transmit therethrough; the blue color filter can reflect blue light and allow red light and green light to transmit. The red color filter 1221 is disposed to receive the red light projected from the red light source 111 of the light source 11 and reflect the red light to the green color filter 1222 by the red color filter 1221. Accordingly, the green color filter 1222 is disposed to receive the green light projected from the green light source 112 of the light source 11 and the red light reflected from the red color filter 1221, and to reflect the green light by the green color filter 1222 and transmit the red light to the blue color filter 1223. The blue color filter 1223 is disposed to receive the blue light projected from the blue light source 113 of the light source 11 and receive the red light and the green light projected from the green color filter 1222, and reflects the blue light by the blue color filter 1223 and transmits the red light and the green light to the homogenizing and shaping module 123. The monochromatic light emitted from the red light source 111, the green light source 112 and the blue light source 113 of the light source 11 is collected into polychromatic light by the color filter 122 and then projected to the homogenizing and shaping device 123.

It will be appreciated that the color filters of the color filtering means 122 are matched to the monochromatic light sources of the light source 11, wherein the order of the monochromatic light sources and the color filters may be interchanged without affecting the color filtering effect of the color filtering means 122. Therefore, the position of the color filter device 122 and the position sequence of the individual monochromatic light sources of the light source 11 are only used as an example and are not limited.

As shown in fig. 2A and 2B, the homogenizing and shaping assembly 123 is disposed in communication with the color filter device 122 and the prism 124, wherein the homogenizing and shaping assembly 123 improves uniformity of the light projected from the illumination module 10 and changes a direction of the light projected from the color filter device 122. The homogenizing and shaping assembly 123 further includes at least one fly-eye device 1231, a first relay lens 1232, a mirror 1233, and a second relay lens 1234. The compound eye device 1231 is configured to be connected to the color filter device 122, wherein the light projected through the color filter device 122 is projected to the compound eye device 1231, and the uniformity and illumination brightness of the light projected by the illumination module 10 are improved by the compound eye device 1231. Preferably, the fly-eye device 1231 is a fly-eye lens. The light homogenized by the fly-eye device 1231 is projected or reflected by the first relay lens 1232, the mirror 1233, and the second relay lens 1234 to change the projection direction of the light. It is worth mentioning that the first relay lens 1232 and the second relay lens 1234 allow light to pass through and change the projection direction of the light. The reflecting mirror 1233 changes the transmission direction of the light by reflection.

It is worth mentioning that the homogenizing and shaping component 123 is disposed between the color filter device 122 and the prism 124 of the illumination module 10, and the light transmission and projection direction of the illumination module 10 is changed by the homogenizing and shaping component 123. In the first preferred embodiment of the present invention, the projection device 20 is configured to be connected to the illumination module 10, wherein the illumination module 10 and the projection device 20 are connected to form a zigzag connection structure. Accordingly, the homogenizing and shaping assembly 123 and the prism 124 guide the turning of the light in the illumination module 10, thereby forming a zigzag light transmission trace.

As shown in fig. 2A and 2B, the homogenizing and shaping device 123 projects homogenized light to the prism 124, and projects light to the image display chip 13 through the prism 124, and guides the light to project to the projection device 20 when the image display chip 13 is in the on state, and guides the light to project to the illumination detection device 31 when the DMD is in the off state. The prism 124 has an entrance mirror 1241, a transmission mirror 1242 and an exit mirror 1243. The homogenizing and shaping device 123 projects the shaped light to the incident mirror 1241 of the prism 124, and when the image display chip 13 is in the on state, the prism 124 projects the light outward through the emergent mirror 1243.

Correspondingly, the prism 124 is further provided with at least one projection light port 1244, wherein the transmission light port 1244 is formed on the exit mirror 1243 of the prism 124. In other words, the transmissive light port 1244 of the prism 124 allows light to pass therethrough and projects the light to the projection device 20. Preferably, the exit mirror 1243 of the prism 124 is a non-light-transmitting area except for the transmissive light opening 1244, that is, light projected to the exit mirror 1243 except for the transmissive light opening 1244 cannot be projected outward.

As shown in fig. 2A and fig. 2B, the homogenizing and shaping device 123 projects light to the incident mirror 1241 of the prism 124 to form an incident light path 1245, the light of the incident light path 1245 projects light to the transmission mirror 1242 of the prism 124, and the transmission mirror 1242 projects light to the image display chip 13. When the image display chip 13 is in the on state, the image display chip 13 rotates by +12 °, and the light projected by the transmission mirror 1242 is reflected by the image display chip 13, wherein the image display chip 13 projects the reflected light to the transmission mirror 1242 of the prism 124, and the projection light path 102 is formed in the prism. When the image display chip 12 is in the closed state, the image display chip 13 rotates by-12 °, and the image display chip 13 reflects the light projected by the projection mirror 1242 into the prism to form the detection light path 101.

It is worth mentioning that the surface of the incident mirror 1241 of the prism 124 is coated with a black light barrier, wherein the black light barrier can prevent incident stray light.

According to the first preferred embodiment of the present invention, the illumination detection device 31 of the detection module 30 is disposed on the prism 124 of the illumination module 10, and the illumination detection device 31 receives the light projected from the detection optical path 101, so that the illumination detection device 31 detects the brightness, the color temperature, and the like of the light generated by the light source of the illumination module 10. The illumination detection device 31 further includes a detection reflective mirror 311 and a photosensitive chip 312, wherein the detection reflective mirror 311 reflects light in the detection optical path 101 to the photosensitive chip 312, and the photosensitive chip 312 collects optical information such as brightness and color temperature of light in the detection optical path 101. The light sensing chip 312 detects information such as brightness and color temperature of the light of the detection light path 101 and generates a corresponding detection result, wherein the detection result of the light sensing chip 312 is transmitted to the feedback adjusting module 40, and the feedback adjusting module 40 adjusts the brightness and/or color temperature of the light source 11 of the illumination module 10 based on the detection result of the light sensing chip 40.

Preferably, the detection mirror 311 is disposed on the prism 124 to guide the light of the detection light path 101 to the photosensitive chip 312. Accordingly, the light sensing chip 312 is disposed outside the exit mirror 1243 of the prism 124. More preferably, the photosensitive chip 312 is disposed on the exit mirror 1243 of the prism 124 in a mosaic manner.

It is worth integrating that the illumination detection device 31 collects and receives the light projected by the illumination module 10 through the detection light path 101. In the present invention, the position where the illumination detection device 31 is installed is set here by way of example only, and not limitation. Therefore, the illumination detection device 31 can also be disposed at different positions of the prism 124 according to the projection direction of the detection light path 101, such as at the lower end of the prism 124 or on the surface at other positions.

As shown in fig. 2A, when the image display chip is in the closed state, the light reflected by the image display chip 13 is projected to the detection reflective mirror 311 of the illumination detection device 31, and then the light is reflected by the detection reflective mirror 311 to the photosensitive chip 312. Accordingly, the detection optical path 101 further includes an incident detection optical path 1011 and a reflected detection optical path 1012, wherein the incident detection optical path 1011 projects detection light to the detection reflective mirror 311, and the detection reflective mirror 311 projects the detection light to the photosensitive chip 312 along the reflected detection optical path 1012.

As shown in fig. 2B, when the image chip is in the on state, the light reflected by the image chip 13 is projected to the incident mirror 1241 through the transmission mirror 1242 of the prism 124, and is projected to the projection device 20 through the transmission light port 1244 under the reflection action of the incident mirror 1241. Accordingly, the projection optical path 102 further includes an incident projection optical path 1021 and a reflection projection optical path 1022, wherein when the image chip 13 is in the on state, the image chip projects light to the incident mirror 1241 of the prism 124 through the incident projection optical path 1021. The entrance mirror 1241 of the prism 124 reflects the light of the entrance projection light path 1021 to be projected to the projection device 20 through the reflection projection light path 1022.

It can be understood that, the image display chip 13 projects the light generated by the illumination module 10 to the external environment through the projection device 20 in the on state, and when in the off state, the image display chip 13 projects the light generated by the illumination module 10 to the photosensitive chip 312 of the illumination detection device 31, so as to detect whether the light source 11 of the illumination module 10 is in the normal working state through the photosensitive chip 312. When the light sensing chip 312 detects that the light source 11 of the lighting module 10 is in an abnormal working state, the feedback adjusting module 40 adjusts the light source 11 of the lighting module 10.

The light sensing chip 312 receives the light generated by the light source 11, and the light sensing chip 312 detects and analyzes the brightness, the color temperature and the ratio of the monochromatic light of the light source 11. The brightness, the color temperature and the monochromatic light ratio of the light source 11 detected by the light sensing chip 312 are fed back to the feedback adjusting module 40 as the detection result. The feedback adjusting module 40 compares the detection result of the photosensitive chip 312 with the brightness, color temperature and monochromatic light ratio of the light set by the light source 11 to determine whether the light generated by the light source 11 is abnormal. When the feedback adjusting module 40 determines that the light emitted by the light source 11 is abnormal, the feedback adjusting module 40 adjusts the brightness, the color temperature and the monochromatic light ratio of the light source 11 of the lighting module 10, so that the lighting of the system is stable.

Accordingly, the environment detection device 32 of the detection module 30 detects the brightness of the environment light of the projection environment of the projection system, and generates a corresponding environment light detection result, wherein the environment light detection result generated by the environment detection device 32 is transmitted to the feedback adjustment module 40, and the brightness and the color temperature of the light source 11 of the illumination module 10 are adjusted by the feedback adjustment module 40 based on the detection result of the environment detection device 32, so that the projection effect of the projection system is suitable for the current projection environment.

Preferably, when the brightness of the projection ambient light of the projection system is higher than a certain value, such as in a daytime under sunlight environment, the brightness of the ambient light is used to image the projection effect of the projection system, and the feedback adjustment module 40 adjusts and increases the brightness of the light source 11 of the illumination module 10 based on the detection result of the environment detection device 32, so as to increase the projection brightness of the projection system. Accordingly, when the projection environment of the projection system is dark, for example, in a night environment, the feedback adjusting module 40 adjusts and reduces the brightness and the color temperature of the light source 11 of the illumination module 10 based on the detection result of the environment detecting device 32 to adapt to the current projection environment light, so as to provide a comfortable projection experience for the user.

As shown in fig. 1A, the feedback adjusting module 40 of the projection system is communicatively connected to the detecting module 30, wherein the brightness information and the color temperature information of the light source of the current illumination module 10 collected by the detecting module 30, and the brightness information of the current illumination environment light are transmitted to the feedback adjusting module 40. The feedback adjusting module 40 determines whether the light source 11 of the lighting module 10 is in a normal working state or not based on the information collected by the detecting module 30, and adjusts and controls the brightness and the color temperature of the light source 11 of the lighting module 10 to adapt to the current lighting environment.

As shown in fig. 1A, the feedback adjusting module 40 further includes an information feedback module 41 and a judgment adjusting module 42, wherein the information feedback module 41 receives the brightness information, the color temperature information and the brightness information of the ambient light of the light source 11 of the lighting module 10 collected by the detecting module 30. The information feedback module 41 feeds back the information collected by the detection module 30 to the judgment and adjustment module 42, and the judgment and adjustment module 42 judges whether the light source 11 of the illumination module 10 is working normally at present. When the light source 11 is in an abnormal working state, or the ambient light brightness is too high or too low, the brightness of the light source 11 of the lighting module 10 is adjusted by the judgment and adjustment module 42 to correct the light source brightness and color temperature, or adapt to the current lighting environment.

As shown in fig. 2A and 2B, the projection device 20 is disposed in the light projection direction of the illumination module 10, and the projection device 20 projects the light generated by the illumination module 10 to the external environment. Preferably, the projection device 20 is a light projection lens.

Referring to FIGS. 3A and 3B of the drawings accompanying this specification, a projection system according to a second preferred embodiment of the present invention is described in the following description. The projection system includes an illumination module 10, a detection module 30, and a feedback adjustment module 40. The lighting module 10 generates light, wherein the light generated by the lighting module is processed and then projected to the external environment. The detection module 30 detects whether the light projected by the lighting module 10 is suitable for the current lighting environment, and generates a corresponding detection signal. The feedback adjusting module 40 is communicatively connected to the detecting module 30, and the feedback adjusting module 40 adjusts the light generated by the illuminating module 10 based on the detection signal generated by the detecting module 30 to adapt to the current illumination environment, so as to improve the projection effect of the projection system. The projection system further comprises a projection device 20, wherein the projection device 20 is kept in the projection direction of the illumination module 10, and the light generated by the illumination module 10 is projected to the external environment by the projection device 20.

It should be noted that the structure and function of the illumination module 10, the projection apparatus 20, and the feedback adjustment module 40 of the projection system according to the second preferred embodiment of the present invention are the same as those of the projection system according to the above preferred embodiment, and the difference is the illumination detection apparatus 31 of the detection module 30.

As shown in fig. 3A and 3B, the illumination detection device 31 of the detection module 30 further includes a detection mirror 311 and a photosensitive chip 312. When the image display chip 13 is in the closed state, the detection mirror 311 projects the light reflected by the image display chip 13 to the photosensitive chip 312, so that the luminance, the color temperature, and the like of the light generated by the illumination module 10 are detected by the photosensitive chip 312. The light sensing chip 312 is a device capable of detecting brightness and color temperature of light, wherein the light reflected by the detection mirror 311 is received by the light sensing chip 312, and the light sensing chip 312 generates a corresponding detection result.

The detection mirror 311 is disposed on the prism 124 to guide the light of the detection optical path 101 to the photosensitive chip 312. According to the second preferred embodiment of the present invention, the photosensitive chip 312 is disposed on the projection apparatus 20, wherein the light reflected by the detection mirror 311 is received by the photosensitive chip 312.

Referring to FIG. 4A and FIG. 4B of the drawings accompanying this specification, another alternative embodiment of a projection system according to the above preferred embodiment of the present invention is set forth in the following description. The projection system includes an illumination module 10, a detection module 30, and a feedback adjustment module 40. The lighting module 10 generates light, wherein the light generated by the lighting module is processed and then projected to the external environment. The detection module 30 detects whether the light projected by the lighting module 10 is suitable for the current lighting environment, and generates a corresponding detection signal. The feedback adjusting module 40 is communicatively connected to the detecting module 30, and the feedback adjusting module 40 adjusts the light generated by the illuminating module 10 based on the detection signal generated by the detecting module 30 to adapt to the current illumination environment, so as to improve the projection effect of the projection system. The projection system further comprises a projection device 20, wherein the projection device 20 is kept in the projection direction of the illumination module 10, and the light generated by the illumination module 10 is projected to the external environment by the projection device 20.

It should be noted that, in the present alternative embodiment, the projection device 20, the detection module 30 and the feedback adjustment module 40 of the projection system have the same structure and function as those of the projection system of the above preferred embodiment, and the difference is the connection structure between the illumination module 10 and the projection device 20.

In detail, the lighting module 10 further includes at least one light source 11, an optical component 12, and at least one image chip 13. The light source 11 of the lighting module 10 generates light and projects the generated light to the optical assembly 12, and the light projected from the light source 11 is integrally processed by the optical assembly 12. The optical component 12 integrates and processes the light generated by the light source 11 and then projects the light to the image display chip 13, and the image display chip 13 reflects the light to form the detection light path 101 and the projection light path 102, wherein the detection light path 101 guides the light generated by the light source 11 to the illumination detection device 31 of the detection module 30, and the projection light path 102 guides and projects the light generated by the light source 11 to the projection device 20.

The optical assembly 12 further includes at least one collimating lens 121, at least one color filter 122, a homogenizing and shaping assembly 123, and a prism 124, wherein the light generated by the light source 11 is collimated by the collimating lens 121 and then reflected by the color filter 122 into the homogenizing and shaping assembly 123.

In the present modified embodiment, the projection device 20 is configured to be connected to the illumination module 10, wherein the illumination module 10 and the projection device 20 are connected to form a "U" shaped connection structure. Accordingly, the homogenizing and shaping assembly 123 and the prism 124 guide the turning of the light in the illumination module 10, thereby forming a "U" shaped light transmission trace.

Referring to fig. 5 of the drawings accompanying the present specification, a vehicle to which the projection system of the above preferred embodiment of the present invention is applied will be described in the following description. The vehicle includes a vehicle body 300 and a projection system 400, wherein the projection system 400 is disposed on the vehicle body 300, and the projection system illuminates or projects image information such as images and graphics into the vehicle body 300.

It should be noted that the projection system 400 is the projection system of the above preferred embodiment, wherein the projection system 400 includes an illumination module 10, a detection module 30, and a feedback adjustment module 40. The lighting module 10 generates light, wherein the light generated by the lighting module is processed and then projected to the external environment. The detection module 30 detects whether the light projected by the lighting module 10 is suitable for the current lighting environment, and generates a corresponding detection signal. The feedback adjusting module 40 is communicatively connected to the detecting module 30, and the feedback adjusting module 40 adjusts the light generated by the illuminating module 10 based on the detection signal generated by the detecting module 30 to adapt to the current illumination environment, so as to improve the projection effect of the projection system. The projection system further comprises a projection device 20, wherein the projection device 20 is kept in the projection direction of the illumination module 10, and the light generated by the illumination module 10 is projected to the external environment by the projection device 20.

Preferably, the projection device 20 is configured to project the light generated by the illumination module 10 to a windshield of the vehicle body 300, and a user can obtain the image information projected by the projection system 400 through the windshield.

In addition, the detecting module 30 further includes an illumination detecting device 31 and an environment detecting device 32, wherein the illumination detecting device 31 detects the brightness and the color temperature of the light generated by the illumination module 10 of the projection system, and the feedback adjusting module 40 adjusts the light generated by the illumination module 10 based on the detection result of the illumination detecting device 31. The environment detection device 32 detects the light brightness and color temperature of the environment of the vehicle body 300, so that the feedback adjustment module 40 adjusts and controls the brightness and color temperature of the light projected by the illumination module 10 based on the brightness of the environment light of the vehicle body 300.

According to another aspect of the present invention, the present invention further provides a method for detecting and adjusting the lighting of a projection system, wherein the method comprises the following method steps:

(a) a light sensor chip 312 collects light projected to a detection light path 101;

(b) detecting optical performance data of the light rays and feeding back a detection result; and

(c) the brightness and color temperature of the light source 11 are adjusted based on the detection result.

According to the above preferred embodiment of the present invention, the projection system is formed by a display chip 13 being reflected in a closed state to form a detection light path 101, and being reflected in an open state to form a projection light path 102, wherein light of the projection light path 102 is projected to the external environment through a projection device 20 of the projection system. Accordingly, the light of the detection light path 101 is projected to the photosensitive chip 312, and the optical performance data of the light is detected by the photosensitive chip. The projection system generates light by a light source module, the light source module projects the generated light to the image display chip 13, and the detection light path 101 and the projection light path 102 are formed under the reflection action of the image display chip 13.

The optical performance parameters of the light of the detection light path 101, such as brightness, color temperature, monochromatic light ratio, etc., are detected by the photosensitive chip 312 of the projection system, wherein the optical performance parameters of the detection light path 101 detected by the photosensitive chip 312 are fed back to a feedback adjustment module 40. The feedback adjustment system 40 is controllably connected to the light source module, and the feedback adjustment module 40 controls or adjusts the optical performance of the light source module projecting light outwards, so as to control the optical performance of the light in the projection light path 102 of the projection system.

The method steps as described above, wherein step (a) further comprises the steps of: further collecting light of a projection environment of the projection system. In the above method step, wherein step (b) further comprises the steps of: detecting the brightness, the color temperature and the ratio of each monochromatic light of the light source 11; and detecting the brightness of the projection environment light. In the above method step, wherein the step (c) further comprises the steps of: comparing whether the brightness and the color temperature of the light source 11 and the ratio of each monochromatic light are consistent with a set value or not based on the detection feedback result; and adjusting the brightness, the color temperature and the proportion of each monochromatic light of the light source 11 in real time according to the feedback result.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims (26)

1. A projection system, comprising:

an illumination module, wherein the illumination module is turned on to project a projection light path;

the detection module is used for forming a detection light path facing the detection module, wherein an included angle exists between the detection light path and the projection light path, and the detection module is used for collecting data of the detection light path so as to generate a detection result related to light rays in the projection light path; and

a feedback adjustment module, wherein the feedback adjustment module is controllably connected to the illumination module, wherein the feedback adjustment module adjusts the light in the projected light path projected by the illumination module based on the detection result.

2. The projection system of claim 1, wherein the projection system further comprises a projection device, wherein the projection device receives the light of the projection optical path, and the light of the projection optical path is projected outward by the projection device to form an image.

3. The projection system of claim 2, wherein the detection module further comprises an illumination detection device, wherein the illumination detection device receives and detects light projected through the detection optical path in the illumination module.

4. The projection system of claim 3, wherein the detection module further comprises an environment detection device, wherein the environment detection device detects light of a projection environment in which the projection system is located.

5. The projection system of claim 4, wherein the environment detection device detects brightness of light of an environment projected by the projection system.

6. The projection system of claim 3, wherein the illumination detection device detects performance parameters of light produced by the illumination module, wherein the optical performance parameters are selected from the group consisting of brightness, color temperature, and a monochromatic light composition.

7. The projection system of claim 3, wherein the illumination module further comprises:

at least one light source assembly; and

the imaging chip is adjustably switched between an open state and a closed state, when the imaging chip is in the open state, the imaging chip reflects the light projected by the light source component to form the projection light path, and when the imaging chip is in the closed state, the imaging chip reflects the light projected by the light source component to form the detection light path.

8. The projection system of claim 7, wherein the imaging chip is a DMD chip.

9. The projection system of claim 7, wherein the light source module further comprises at least one light source and an optical module, wherein the optical module receives and integrates the light generated by the light source, and the optical module projects the light generated by the light source to the image chip.

10. The projection system of claim 9, wherein the light sources further comprise at least one red light source, at least one green light source, and at least one blue light source, wherein the red light source, the green light source, and the blue light source are monochromatic LED lights.

11. The projection system of claim 9, wherein the optical assembly further comprises at least one collimating lens, a color filter, a homogenizing and shaping assembly, and at least one prism, wherein the light generated by the light source is collimated by the collimating lens, and then is integrally projected to the homogenizing and shaping assembly via the color filter, wherein the homogenizing and shaping assembly finishes the light and projects the light to the prism, and wherein the light is projected to the image display chip after passing through the prism.

12. The projection system of claim 11, wherein the color filter arrangement further comprises a red color filter, a green color filter, and a blue color filter, wherein the color filter arrangement is a high reflectance high lens sheet, wherein the color filter arrangement collects light generated by the light source.

13. The projection system of claim 11, wherein the homogenizing and shaping device is connected to the color filter device and the prism, and the homogenizing and shaping device guides the light to transmit to form a zigzag transmission track, wherein the homogenizing and shaping device further comprises a fly-eye device, a first relay lens, a reflector, and a second relay lens, wherein the fly-eye device is a fly-eye lens, and the fly-eye device improves the uniformity and illumination brightness of the light, and wherein the first relay lens, the second relay lens, and the reflector change the transmission direction of the light.

14. The projection system of claim 11, wherein the homogenizing and shaping device is connected to the color filter device and the prism, and the homogenizing and shaping device guides the light to transmit to form a U-shaped transmission track, wherein the homogenizing and shaping device further comprises a fly-eye device, a first relay lens, a reflector, and a second relay lens, wherein the fly-eye device is a fly-eye lens, and the fly-eye device improves the uniformity and illumination brightness of the light, and wherein the first relay lens, the second relay lens, and the reflector change the transmission direction of the light.

15. The projection system of claim 11, wherein the prism has an entrance mirror, a transmission mirror, and an exit mirror, wherein the entrance mirror receives the light projected by the homogenizing and shaping device, the projection mirror projects the light to the image chip, when the image chip is in the open state, the light is reflected by the image chip and reflected at the entrance mirror through the transmission mirror, thereby forming the projection light path, and when the image chip is in the closed state, the light is reflected by the image chip and reflected through the transmission mirror, thereby forming the detection light path.

16. The projection system of claim 15, wherein the prism is further provided with at least one projection light port, wherein the projection light port is formed in the exit mirror surface, and the projection light port allows light rays of the projection light path to be projected outward through the exit mirror surface.

17. The projection system of claim 16, wherein the illumination detection apparatus further comprises:

a mirror, wherein the mirror is disposed on the prism, and the mirror guides the light projection of the detection light path; and

and the light reflected by the reflector is projected to the photosensitive chip, and the performance data of the light is detected by the photosensitive chip.

18. The projection system of claim 17, wherein the photo-sensing chip is mounted in a mosaic manner on a non-exit area of the exit mirror.

19. The projection system of claim 17, wherein the light sensing chip is disposed on the projection device, and the light sensing chip is supported by the projection device to collect light of the detection light path.

20. The projection system of claim 3, wherein the feedback adjustment module further comprises an information feedback module and a judgment adjustment module, wherein the information feedback module feeds back the detection result of the detection module to the judgment adjustment module, and the judgment adjustment module analyzes whether the illumination module is in a normal illumination state and controls and adjusts the brightness, the color temperature and the ratio of the primary color light of the illumination module.

21. A vehicle, characterized by comprising:

a vehicle body; and

the projection system of at least one of claims 1 to 20, wherein the projection system is disposed on the vehicle body, the projection system projecting light to a windshield of the vehicle body.

22. A method for adjusting color temperature and brightness by projection detection, the method comprising the steps of:

(a) collecting light projected by a detection light path by a photosensitive chip;

(b) detecting performance data of the light to feed back a detection result; and

(c) and adjusting the brightness and the color temperature of the light source based on the detection result so as to perform projection imaging through a projection light path.

23. The method of claim 22, wherein in step (a) of the method, further collecting light from a projection environment in which the projection system is located.

24. The method of claim 22, wherein said method step (b) comprises the steps of:

detecting the brightness and the color temperature of the light source and the proportion of each monochromatic light; and

and detecting the brightness of the projection environment light.

25. The method of any one of claims 22 to 24, wherein said step (c) further comprises the steps of:

(c.1) comparing the light performance of the light source with a set value based on the detection feedback result; and

if not, adjusting the brightness, color temperature and the ratio of each monochromatic light in real time according to the feedback result; and if so, waiting for updating the feedback result and returning to the step (c.1).

26. The method of claim 25, wherein in method step (c.1), the light properties of the light source are selected from one or more of the group consisting of the brightness, the color temperature and the composition of the individual monochromatic lights.

Images