Holographic window system and method with anti-glare function

Abstract

The invention discloses a holographic car window system and method with an anti-dazzle function. The system comprises a detection module, a control module and a holographic car window module. The detection module is used for detecting the intensity and spectrum of external light and the irradiation angle relative to a driver. The control module comprises a calculation unit and a signal generation unit, the calculation unit calculates the measurement parameters of the detection module into the actual parameters of the external light, and the signal generation unit generates the control quantity for driving the holographic window module to respond according to the parameters of the external light. The holographic car window module is mainly a dynamic holographic optical element and is used for deviating external light from the range of eyes of a driver. According to the system and the method, the problem of interference of external glare from all time periods, all directions and all sources on the sight of a driver is effectively solved through self-adaptive adjustment of the holographic element according to the external illumination condition. And the driving safety and comfort are effectively improved on the premise that the operation complexity is not increased.

Description

Technical Field

[0001] The present invention relates to the field of information optics technology, and in particular to a holographic vehicle window system and method with anti-glare function. Background Art

[0002] Glare is a harmful lighting phenomenon that occurs when the brightness of the light source is extremely high or when there is a large difference in brightness between the background and the center of the field of vision. When a driver encounters glare while driving, it can cause temporary blindness to the driver and increase the risk of traffic accidents. Therefore, suppressing glare is an important challenge in improving automobile safety.

[0003] Glare mainly comes from sunlight, glass exterior walls of buildings, reflected light from water on the road, searchlights entering and exiting tunnels, and high beams of surrounding vehicles at night. Glare causes the driver's observation and reaction abilities to decline over a period of time, making it difficult to detect and deal with possible dangers in a timely manner. The current solution to glare is mainly to set up a virtual light shield. For example, the existing patent US201415038115A discloses a method for operating a vehicle glare protection system, in which a video sensor device obtains vehicle passenger head position information and compares it with a typical glare pattern. On the one hand, the device in this method may obstruct the driver's line of sight once it fails. On the other hand, the virtual light shield used in this method is only for sunlight that irradiates from top to bottom and has a large incident angle, and cannot provide protection for artificial light sources that irradiate horizontally or from bottom to top.

[0004] In view of the above problems, the present invention aims to provide a holographic window system and method with anti-glare function to solve one or more of the above technical problems. Summary of the invention

[0005] The purpose of this application is to solve one of the above-mentioned technical problems at least to a certain extent.

[0006] To this end, the first purpose of the present application is to provide a holographic window system with an anti-glare function, and the second purpose of the present application is to provide a holographic window method with an anti-glare function.

[0007] In order to achieve the above-mentioned purpose, the first embodiment of the present application proposes a holographic window system with an anti-glare function, comprising:

[0008] A detection module (100), a control module (200) and a holographic vehicle window module (300).

[0009] Wherein, the detection module (100) is used to detect external light and obtain measurement parameters.

[0010] The control module (200) comprises a calculation unit (201) and a signal generation unit (202). The calculation unit (201) resolves the measurement parameters of the detection module into actual parameters of external light, and the signal generation unit (202) generates a control quantity for driving the holographic window module to respond according to the external light parameters.

[0011] The holographic window module (300) comprises a window (301) and a dynamic holographic optical element (302). The dynamic holographic optical element (302) is divided into a working area (303) and a non-working area (304). The dynamic holographic optical element (302) adjusts the state according to the control amount to deviate the external light from the driver's eye range.

[0012] Optionally, the detection module (100) is a single sensor solution or a sensor array solution.

[0013] When it is a single sensor solution, the single sensor cooperates with the light-shielding slit to obtain external light information.

[0014] In the case of a sensor array solution, multiple sensors are distributed at different positions in front of the car to jointly obtain external light information.

[0015] Optionally, the computing unit (201) is one of a central processing unit (CPU), a graphics processing unit (GPU), a digital signal processor (DSP), a neural network processor (NPU), and a field programmable gate array (FPGA).

[0016] Optionally, the calculation unit (201) resolves the measurement parameters into light intensity and an angle of incident external light relative to the driver.

[0017] When it is a single sensor solution, the light intensity is the average light intensity within the photosensitivity range of the single sensor; the angle of the incident external light relative to the driver is calculated based on the projection position of the shading slit in the photosensitivity area.

[0018] When it is a sensor array solution, the light intensity is the average light intensity detected by all sensors. The angle of the incident ambient light relative to the driver is calculated based on the sensor position and the difference between the light intensities detected by each sensor.

[0019] Optionally, the calculation unit (201) calculates the position and state of the working area (303) in the dynamic holographic optical element (302) based on the detected light intensity and the angle of the incident external light relative to the driver, combined with the relative position of the driver and the vehicle window.

[0020] Optionally, the vehicle window (301) is one of a plane, a cylinder and a free-form surface.

[0021] Optionally, the dynamic holographic optical element (302) is one of a holographic optical element (HOE), a polymer dispersed liquid crystal (PDLC), a holographic polymer dispersed liquid crystal (HPDLC) and a liquid crystal.

[0022] Optionally, the dynamic holographic optical element (302) is a displaceable holographic optical element or a holographic optical element that can be controlled in different areas.

[0023] When it is a displaceable holographic optical element, the dynamic holographic optical element (302) is connected to the vehicle window (301) in a detachable manner using a mechanical structure, and its position is adjusted according to external lighting conditions. The area where it is located is the working area (303).

[0024] When the holographic optical element is regulated by partitions, the position of the working area (303) is calculated according to the external light conditions, and the corresponding partitions of the dynamic holographic optical element (302) are opened, while other areas are closed.

[0025] Optionally, the working area (303) can deviate incident external light from the driver's eye range while maintaining the perspective function.

[0026] In the holographic window system with anti-glare function of the embodiment of the present application, the detection module detects the intensity, spectrum and relative angle of illumination of the external light. The calculation unit resolves the measurement parameters of the detection module into the actual parameters of the external light, and the signal generation unit generates a control amount to drive the holographic window module to respond according to the external light parameters. The holographic window module adjusts the state according to the control amount and deviates the external light from the driver's eye range. The system and method effectively solve the problem of interference of external glare from various time periods, directions and sources on the driver's line of sight through the adaptive adjustment of the holographic element according to the external lighting conditions. It effectively improves the safety and comfort of driving without increasing the complexity of operation.

[0027] In order to achieve the above-mentioned purpose, the second embodiment of the present application proposes a holographic window method with anti-glare function, comprising the following steps:

[0028] S1, the detection block detects external light and obtains measurement parameters;

[0029] S2, the calculation unit solves the measurement parameters of the detection module into actual parameters such as the intensity and spectrum of the external light and the irradiation angle relative to the driver;

[0030] S3, the signal generating unit generates a control amount for driving the holographic window module to respond according to the external light parameter;

[0031] S4, the adjustable holographic optical element adjusts its state according to the control amount to divert the external light away from the driver's eyes.

[0032] S5, repeat the above steps until the system is shut down.

[0033] In the holographic window method with anti-glare function of the embodiment of the present application, the detection module detects the intensity, spectrum and relative angle of illumination of the external light. The calculation unit resolves the measurement parameters of the detection module into the actual parameters of the external light, and the signal generation unit generates a control amount to drive the holographic window module to respond according to the external light parameters. The holographic window module adjusts the state according to the control amount and deviates the external light from the driver's eye range. The system and method effectively solve the problem of interference of external glare from various time periods, directions and sources on the driver's line of sight through the adaptive adjustment of the holographic element according to the external lighting conditions. It effectively improves the safety and comfort of driving without increasing the complexity of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings constituting part of the present application are used to provide a further understanding of the present application. The exemplary embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0035] Figure 1 is a schematic structural diagram of a holographic vehicle window system with an anti-glare function according to an embodiment of the present application working under sunlight;

[0036] Figure 2 It is a schematic structural diagram of a holographic window system with an anti-glare function according to an embodiment of the present application working under high beam;

[0037] Figure 3 is a schematic structural diagram of a holographic window system with an anti-glare function working under sunlight according to another embodiment of the present application;

[0038] Figure 4 is a schematic structural diagram of a holographic window system with an anti-glare function in another embodiment of the present application working under high beam;

[0039] Figure 5 is a flow chart of a holographic vehicle window method with anti-glare function according to an embodiment of the present application; Specific embodiments

[0040] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0041] The present application is further described in detail below in conjunction with specific embodiments. These embodiments should not be construed as limiting the scope of protection claimed in the present application.

[0042] The holographic window system and method with anti-glare function according to the embodiments of the present application will be described below with reference to the accompanying drawings.

[0043] Figure 1 The present invention is a schematic structural diagram of a holographic window system with an anti-glare function working under sunlight according to an embodiment of the present application. The system comprises a detection module (100), a control module (200) and a holographic window module (300), wherein the detection module (100) is used to detect external light and obtain a measurement parameter. The control module (200) comprises a calculation unit (201) and a signal generation unit (202). The calculation unit (201) resolves the measurement parameter of the detection module into an actual parameter of external light, and the signal generation unit (202) generates a control amount for driving the holographic window module to respond according to the external light parameter. The holographic window module (300) comprises a window (301) and a dynamic holographic optical element (302). The dynamic holographic optical element (302) is divided into a working area (303) and a non-working area (304). The dynamic holographic optical element (302) adjusts the state according to the control amount to deviate the external light from the driver's eye range.

[0044] Furthermore, the detection module (100) comprises three light intensity detectors arranged in sequence above the vehicle window. The output of the detectors is used as the input of the calculation unit (201), the output of the calculation unit (201) is used as the input of the signal generation unit (202), and the output of the signal generation unit (202) is used as the input of the dynamic holographic optical element (302). The dynamic holographic optical element (302) covers the entire inner side of the front windshield, and the control amount output by the signal generation unit (202) can open a part of the area in the dynamic holographic optical element (302). The opening or closing of different areas in the dynamic holographic optical element (302) is independent of each other.

[0045] The above mainly introduces the specific composition of the holographic window system with anti-glare function. The following will further describe the working principle of the holographic window system with anti-glare function.

[0046] When the external light is mainly the sun and the sun altitude angle is high, such as Figure 1As shown, the detection module (100) detects that the external light intensity exceeds a threshold value, and starts other parts of the holographic window system with an anti-glare function to start working. The light intensity information detected by the sensor is transmitted to the control unit (200) and the area range of the dynamic holographic optical element (302) that can reduce glare for the driver is calculated. The signal generating unit (202) drives the corresponding area in the dynamic holographic optical element (302) to open as the working area (303). The working area (303) has a designed microstructure, which can deflect sunlight that should directly hit the driver's eyes.

[0047] When the external light is mainly the high beam of the vehicle ahead, such as Figure 2 As shown, since the high beam is usually at a height slightly lower or equivalent to the driver's sight line, the external light will enter the human eye from bottom to top or horizontally. This is because the working area (303) is relatively moved downward compared to when the external light is the sun.

[0048] It should be noted that if the entire window range is always maintained as a working area, external light that would not originally enter the human eye will become stray light and interfere with the human eye. Therefore, the scope of the working area should not be too large.

[0049] In another embodiment of the present application, the dynamic holographic optical element (302) is connected to the vehicle window (301) in a detachable manner using a mechanical structure. The dynamic holographic optical element (302) can move two-dimensionally inside the vehicle window (301).

[0050] The above mainly introduces the specific composition of the holographic window system with anti-glare function. The following will further describe the working principle of the holographic window system with anti-glare function.

[0051] When the external light is mainly the sun and the sun altitude angle is high, such as Figure 3 As shown, the detection module (100) detects that the external light intensity exceeds a threshold value, and starts other parts of the holographic window system with an anti-glare function to start working. The light intensity information detected by the sensor is transmitted to the control unit (200) and the area range of the dynamic holographic optical element (302) that can reduce glare for the driver is calculated. The signal generating unit (202) drives the dynamic holographic optical element (302) to move to a corresponding area as the working area (303). The working area (303) has a designed microstructure, which can deflect sunlight that should directly hit the driver's eyes.

[0052] When the external light is mainly the high beam of the vehicle ahead, such as Figure 4As shown, since the high beam is usually at a height slightly lower or equivalent to the driver's sight line, the external light will enter the human eye from bottom to top or horizontally. This is because the dynamic holographic optical element (302) moves downward compared to when the external light is the sun.

[0053] In the holographic window system with anti-glare function of the embodiment of the present application, the detection module detects the intensity, spectrum and relative angle of illumination of the external light. The calculation unit resolves the measurement parameters of the detection module into the actual parameters of the external light, and the signal generation unit generates a control amount to drive the holographic window module to respond according to the external light parameters. The holographic window module adjusts the state according to the control amount and deviates the external light from the driver's eye range. The system and method effectively solve the problem of interference of external glare from various time periods, directions and sources on the driver's line of sight through the adaptive adjustment of the holographic element according to the external lighting conditions. It effectively improves the safety and comfort of driving without increasing the complexity of operation.

[0054] To achieve the above objectives, the present application proposes a holographic vehicle window method with anti-glare function.

[0055] Figure 5 It is a flow chart of a holographic vehicle window method with anti-glare function according to an embodiment of the present application.

[0056] like Figure 5 As shown, the holographic window method with anti-glare function includes the following steps:

[0057] S1, the detection block detects external light and obtains measurement parameters;

[0058] S2, the calculation unit solves the measurement parameters of the detection module into actual parameters such as the intensity and spectrum of the external light and the irradiation angle relative to the driver;

[0059] S3, the signal generating unit generates a control amount for driving the holographic window module to respond according to the external light parameter;

[0060] S4, the adjustable holographic optical element adjusts its state according to the control amount to divert the external light away from the driver's eyes.

[0061] S5, repeat the above steps until the system is shut down.

[0062] It should be understood that the implementation principle of the holographic window method with anti-glare function of the present application is consistent with the principle of the holographic window system with anti-glare function of the previous embodiment, and will not be repeated here.

[0063] In the holographic window method with anti-glare function of the embodiment of the present application, the detection module detects the intensity, spectrum and relative angle of illumination of the external light. The calculation unit resolves the measurement parameters of the detection module into the actual parameters of the external light, and the signal generation unit generates a control amount to drive the holographic window module to respond according to the external light parameters. The holographic window module adjusts the state according to the control amount and deviates the external light from the driver's eye range. The system and method effectively solve the problem of interference of external glare from various time periods, directions and sources on the driver's line of sight through the adaptive adjustment of the holographic element according to the external lighting conditions. It effectively improves the safety and comfort of driving without increasing the complexity of operation.

[0064] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0065] It should be noted that, in the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. In the absence of mutual contradictions, the present invention may have various changes and variations for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A holographic window system with anti-glare function, characterized in that: include: A detection module (100), a control module (200) and a holographic window module (300), wherein: The detection module (100) is used to detect external light and obtain measurement parameters. The control module (200) comprises a calculation unit (201) and a signal generation unit (202). The calculation unit (201) resolves the measurement parameters of the detection module into actual parameters of external light, and the signal generation unit (202) generates a control quantity for driving the holographic window module to respond according to the external light parameters. The holographic window module (300) comprises a window (301) and a dynamic holographic optical element (302). The dynamic holographic optical element (302) is divided into a working area (303) and a non-working area (304). The dynamic holographic optical element (302) adjusts the state according to the control amount to deviate the external light from the driver's eye range.

2. The holographic window system with anti-glare function as claimed in claim 1, characterized in that: The detection module (100) is a single sensor solution or a sensor array solution. When it is a single sensor solution, the single sensor cooperates with the light-shielding slit to obtain external light information. In the case of a sensor array solution, multiple sensors are distributed at different positions in front of the car to jointly obtain external light information.

3. The holographic window system with anti-glare function as claimed in claim 1, characterized in that: The computing unit (201) is one of a central processing unit (CPU), a graphics processing unit (GPU), a digital signal processor (DSP), a neural network processor (NPU), and a field programmable gate array (FPGA).

4. The holographic window system with anti-glare function as claimed in claim 1, characterized in that: The calculation unit (201) resolves the measured parameters into light intensity and the angle of incident ambient light relative to the driver. When it is a single sensor solution, the light intensity is the average light intensity within the photosensitivity range of the single sensor; the angle of the incident external light relative to the driver is calculated based on the projection position of the shading slit in the photosensitivity area. When it is a sensor array solution, the light intensity is the average light intensity detected by all sensors. The angle of the incident ambient light relative to the driver is calculated based on the sensor position and the difference between the light intensities detected by each sensor.

5. The holographic window system with anti-glare function as claimed in claim 1, characterized in that: The calculation unit (201) calculates the position and state of the working area (303) in the dynamic holographic optical element (302) based on the detected light intensity and the angle of the incident external light relative to the driver, combined with the relative position of the driver and the vehicle window.

6. The holographic window system with anti-glare function as claimed in claim 1, characterized in that: The vehicle window (301) is one of a plane, a cylinder and a free-form surface.

7. The holographic window system with anti-glare function as claimed in claim 1, characterized in that: The dynamic holographic optical element (302) is one of a holographic optical element (HOE), a polymer dispersed liquid crystal (PDLC), a holographic polymer dispersed liquid crystal (HPDLC) and a liquid crystal.

8. The holographic window system with anti-glare function as claimed in claim 1, characterized in that: The dynamic holographic optical element (302) is a displaceable holographic optical element or a holographic optical element that can be controlled in different areas. When it is a displaceable holographic optical element, the dynamic holographic optical element (302) is connected to the vehicle window (301) in a detachable manner using a mechanical structure, and its position is adjusted according to external lighting conditions. The area where it is located is the working area (303). When the holographic optical element is regulated by partitions, the position of the working area (303) is calculated according to the external light conditions, and the corresponding partitions of the dynamic holographic optical element (302) are opened, while other areas are closed.

9. The holographic window system with anti-glare function as claimed in claim 1, characterized in that: The working area (303) can deviate incident external light from the driver's eye range while maintaining the perspective function.

10. A method for implementing a holographic vehicle window with an anti-glare function, characterized in that: The following steps are involved: S1, the detection block detects external light and obtains measurement parameters; S2, the calculation unit solves the measurement parameters of the detection module into actual parameters such as the intensity and spectrum of the external light and the irradiation angle relative to the driver; S3, the signal generating unit generates a control amount for driving the holographic window module to respond according to the external light parameter; S4, the adjustable holographic optical element adjusts its state according to the control amount to divert the external light away from the driver's eyes. S5, repeating the above steps until the holographic window system with anti-glare function is turned off.

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