Snapshot device capable of resisting glare of automobile headlamp

Abstract

The utility model provides a snapshot machine device capable of resisting glare of an automobile headlamp. The snapshot machine device comprises a snapshot machine body and a lens arranged at the front end of the snapshot machine body, the anti-glare polarization filter assembly is arranged at the front end of the lens and used for filtering horizontal polarized light emitted by an automobile headlamp; and the dynamic diaphragm adjusting unit is embedded in an internal light path of the snapshot machine body and is used for quickly and accurately responding to the change of strong light. According to the utility model, the adaptability and imaging quality of the snapshot machine in complex light environments such as strong light, backlight, low light and the like are obviously improved, the snapshot machine is suitable for scenes such as traffic monitoring, violation snapshot and the like, has the characteristics of high efficiency, accuracy and stability, solves the problem of light interference of an automobile headlight from multiple dimensions compared with a traditional snapshot machine, and has a wide application prospect. The identification capability of the snapshot machine on license plate and vehicle characteristics in a night strong light environment is greatly enhanced, and the snapshot machine has great practical value and market promotion potential.

Description

Technical Field

[0001] This utility model relates to a camera device for capturing images that resists glare from car headlights. Background Technology

[0002] With the rapid development of road traffic, traffic enforcement cameras play a crucial role in maintaining traffic order and investigating violations. However, in nighttime driving scenarios, the glare from the headlights of oncoming vehicles often shines directly into the camera's lens, causing problems such as overly bright areas, halos, and reflections in the images captured. This severely affects the accuracy of recognizing key information such as license plates and vehicle characteristics, thereby reducing the effectiveness of traffic management. Currently, most traffic enforcement cameras on the market rely solely on their own software algorithms for optimization when dealing with such strong light interference, with limited effectiveness. There is an urgent need for an innovative solution that combines additional hardware. Utility Model Content

[0003] This invention provides a camera device that can effectively solve the above-mentioned problems by reducing glare from car headlights.

[0004] This utility model is implemented as follows:

[0005] A camera device for detecting glare from car headlights, comprising:

[0006] The main body of the capture camera, and a lens installed at the front end of the main body of the capture camera;

[0007] An anti-glare polarizing filter assembly is disposed at the front end of the lens and is used to filter horizontally polarized light emitted by automotive headlights;

[0008] The dynamic aperture adjustment unit is embedded in the optical path inside the camera body and is used to quickly and accurately respond to changes in strong light.

[0009] A light sensor is located below the main body of the camera to ensure that there is no difference in light intensity between the light sensor and the main body of the camera.

[0010] A microcontroller module, which is connected to the light sensor and used to transmit light data;

[0011] The intelligent light control supplementary lighting module is located below the main body of the camera and away from the light sensor, and is used for strobe supplementary lighting.

[0012] The beneficial effects of this utility model are:

[0013] (1) This utility model integrates an anti-glare polarizing filter assembly, a dynamic aperture adjustment unit, a light sensor, a microcontroller module, and an intelligent light-controlled supplementary lighting module to achieve efficient image capture under complex lighting conditions, with significant beneficial effects. The anti-glare polarizing filter assembly can effectively filter the horizontally polarized light emitted by car headlights, reduce the interference of glare on imaging, and ensure image clarity; the dynamic aperture adjustment unit is embedded in the optical path, which can quickly and accurately respond to changes in strong light, avoid overexposure or underexposure, and ensure stable image quality; the light sensor works in conjunction with the camera body to ensure that the light intensity received by both is consistent, avoiding uneven exposure problems; the microcontroller module processes the data transmitted by the light sensor in real time, automatically adjusts the system parameters, and realizes intelligent control; the intelligent light-controlled supplementary lighting module performs strobe supplementary lighting in low-light environments, further improving image clarity. Overall, the system significantly improves the adaptability and imaging quality of the camera in complex lighting environments such as strong light, backlight, and low light, and is suitable for scenarios such as traffic monitoring and violation capture, with the characteristics of high efficiency, accuracy, and stability. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is the front view of this utility model.

[0016] Figure 2 This is a cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of the working principle of this utility model.

[0018] Explanation of icon numbers:

[0019] 10. Camera body; 20. Lens; 30. Anti-glare polarizing filter assembly; 40. Dynamic aperture adjustment unit; 50. Light sensor; 60. Microcontroller module; 70. Intelligent light control supplementary lighting module. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0021] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] Reference Figure 1-3 As shown, a camera device for detecting glare from car headlights includes...

[0023] The camera body 10 has a lens 20 mounted at the front end of the camera body 10.

[0024] An anti-glare polarizing filter assembly 30 is disposed at the front end of the lens 20 and is used to filter horizontally polarized light emitted by the automotive headlights. The anti-glare polarizing filter assembly 30 includes several filters supported by multiple layers of nanoscale polarizing materials. The filters can accurately identify and filter out the horizontally polarized light emitted by the automotive headlights, which is the main factor causing glare and reflection. By adjusting the polarization angle of the filters to be perpendicular to the direction of the headlight polarized light, glare entering the lens can be minimized, thus improving image clarity.

[0025] A dynamic aperture adjustment unit 40 is embedded in the internal optical path of the capture camera body 10, used for rapid and accurate response to changes in strong light. The dynamic aperture adjustment unit 40 includes a light-sensing element for sensing the intensity and distribution of light entering the lens 20. The dynamic aperture adjustment unit 40 works in conjunction with the aperture of the lens 20, using the light-sensing element to sense the intensity and distribution of light entering the lens 20 in real time. Once a peak in the strong light from a car headlight is detected, the microelectromechanical system is immediately driven to adjust the aperture size, dynamically controlling the amount of light entering the image to prevent overexposure by strong light, ensuring that the light received by the image sensor is within an appropriate range, and maintaining normal image contrast and detail.

[0026] A light sensor 50 is located below the main body 10 of the capture camera to ensure that the light intensity received by the light sensor 50 and the main body 10 is identical. The light sensor 50 works in conjunction with the intelligent dimming and supplementary lighting module 70. When strong light is detected, the light sensor 50 transmits the light signal to the microcontroller module 60. The microcontroller module 60 analyzes the light signal information and controls the light intensity of the intelligent dimming and supplementary lighting module 70 according to the threshold information to achieve the best dimming and supplementary lighting effect. At the same time, the microcontroller module 60 communicates with the processor of the capture camera 10 to dynamically adjust the aperture state to obtain the best capture image effect.

[0027] A microcontroller module 60 is connected to the light sensor 50 and is used to transmit light data. The microcontroller module 60 includes a microcontroller chip, a sensor interface, a communication interface, and an output control port. The sensor interface is used to connect to the light sensor 50. The microcontroller chip receives and processes signals from the light sensor 50. The communication interface is used to communicate with external devices. The output control port is used to connect to a control device.

[0028] The intelligent light control supplementary light module 70 is located below the main body 10 of the capture camera and away from the light sensor 50, and is used for strobe supplementary light. The intelligent light control supplementary light module 70 includes a driving unit and an electric light source unit. After receiving the signal output by the control module, the driving unit adjusts the power of the electric light source unit to adjust the supplementary light brightness. Furthermore, the intelligent light control supplementary lighting module 70 integrates a light sensor, a microprocessor, and a ring-shaped LED supplementary lighting assembly. After receiving the signal output from the control module, the drive unit adjusts the power of the point light source emitting unit to achieve the adjustment of the supplementary lighting brightness for strobe supplementary lighting. The emitting unit is an LED supplementary lighting assembly. The light sensor monitors the surrounding light environment of the capture camera in real time and transmits data such as light intensity and color temperature to the microprocessor. The microprocessor has a built-in intelligent algorithm that, based on preset light thresholds and nighttime traffic scene models, precisely controls the luminous intensity, color, and angle of the ring-shaped LED supplementary lighting assembly. While suppressing the interference of strong headlights, it provides uniform and soft auxiliary lighting for the capture area, making up for the shadows and dark areas caused by strong headlights, and helping the capture camera obtain clear and complete vehicle images.

[0029] The intelligent light-controlled supplementary lighting module 70 and the main body 10 of the capture machine have a distance L, wherein L≤20cm. The advantages of this setting are: (1) It can prevent the light from the supplementary light from directly shining on the lens 20 or the light sensor 50, avoid the supplementary light source from interfering with the light detection and image acquisition of the main body 10 of the capture machine, and ensure that the light sensor 50 can accurately sense the ambient light intensity; (2) It can ensure that the light of the ring LED supplementary light group evenly covers the capture area, avoid uneven supplementary lighting or local over-brightness caused by too close distance, thereby providing soft and uniform auxiliary lighting for the capture machine; (3) The supplementary light can shine on the vehicle and the capture area at a suitable angle, effectively reducing the shadows and dark areas caused by the strong light of the headlights, and improving the overall clarity and detail of the image; (4) The design of the distance L≤20cm not only ensures the relative position stability of the supplementary lighting module 70 and the main body 10 of the capture machine, but also provides sufficient flexibility for installation and adjustment, making it easy to adjust the angle and position of the supplementary light according to the actual scene requirements to achieve the best supplementary lighting effect. (5) Maintaining a certain distance (≤20cm) can prevent mechanical interference between the supplementary lighting module 70 and other components of the camera body 10 (such as lens 20, light sensor 50, etc.) during installation or operation, thus ensuring the stability and reliability of the equipment.

[0030] In summary, a spacing of L≤20cm plays an important role in avoiding light interference, optimizing supplementary lighting, reducing shadows, ensuring installation flexibility, and avoiding mechanical interference, thereby improving the performance and image quality of the capture camera under different lighting conditions.

[0031] In implementation, firstly, the anti-glare polarizing filter assembly 30 is carefully installed at the foremost point of the lens 20 in the main body 10 of the capture camera. The polarization direction of the filter is calibrated using a high-precision angle meter to match the polarization direction of common local car headlights. The fine-tuning device is then tightened to secure the filter. Next, the light sensor 50 is installed near the bottom of the main body 10, ensuring that the light intensity received by the light sensor 50 and the main body 10 is not significantly different. Then, the intelligent light control supplementary lighting module 70 is fixed within 20 cm below the main body 10, ensuring that the light sensor has a wide field of view and can monitor the surrounding light without obstruction. After completing the electrical connection, the ring LED is adjusted according to factors such as the installation height of the capture camera 10 and the road slope. The initial emission angle of the supplementary light group is pre-adjusted. The light sensor 50 and the intelligent light control supplementary light module 70 are connected to the RS485 interface containing the microcontroller module. Finally, a professional technician opens the lens 20 in the main body 10 of the capture camera, precisely embeds the dynamic aperture adjustment unit 40 into the light path, calibrates the sensitivity of the light sensor to ensure that it can respond quickly and accurately to changes in strong light, and closes the lens after debugging.

[0032] Working principle:

[0033] In nighttime or complex lighting environments, the camera body 10 filters the horizontally polarized light emitted by the car headlights through the anti-glare polarizing filter assembly 30, reducing glare interference with the lens 20. The light sensor 50 monitors the ambient light intensity in real time and transmits the light signal to the microcontroller module 60. The microcontroller module 60 controls the ring LED supplementary light group of the intelligent light control supplementary light module 70 according to a preset threshold, providing uniform and soft auxiliary lighting to compensate for the shadows and dark areas caused by the strong headlights. When a sudden strong light attack is detected, the dynamic aperture adjustment unit 40 responds quickly, sensing the light intensity through the light sensor and driving the microelectromechanical system to adjust the aperture diameter, dynamically controlling the amount of light entering and preventing overexposure of the image. The three work together to ensure that the camera body 10 can acquire clear and complete vehicle images under different lighting conditions, effectively improving the recognition rate and ensuring the accuracy of traffic enforcement.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A camera device for detecting glare from car headlights, characterized in that, include The main body of the camera (10) and the lens (20) are disposed at the front end of the main body of the camera (10). An anti-glare polarizing filter assembly (30) is disposed at the front end of the lens (20) and is used to filter horizontally polarized light emitted by the car headlights; The dynamic aperture adjustment unit (40) is embedded in the optical path inside the main body (10) of the camera and is used to respond quickly and accurately to changes in strong light. A light sensor (50) is disposed below the main body (10) of the camera to ensure that there is no difference in light intensity between the light sensor (50) and the main body (10) of the camera; A microcontroller module (60) is connected to the light sensor (50) and is used to transmit light data; The intelligent light control supplementary light module (70) is located below the main body (10) of the camera and away from the light sensor (50) for strobe supplementary light.

2. The anti-glare capture device for automobile headlights according to claim 1, characterized in that, The anti-glare polarizing filter assembly (30) includes several filters supported by multilayer nanoscale polarizing materials.

3. The anti-glare capture device for automobile headlights according to claim 1, characterized in that, The dynamic aperture adjustment unit (40) includes a light-sensing element for sensing the intensity and distribution of light entering the lens (20).

4. The anti-glare capture device for automobile headlights according to claim 1, characterized in that, The light sensor (50) works in conjunction with the intelligent light control supplementary lighting module (70). When strong light is detected, the microcontroller module (60) analyzes the light signal information and controls the light intensity of the supplementary lighting module.

5. The anti-glare capture device for automobile headlights according to claim 1, characterized in that, The intelligent light control supplementary lighting module (70) includes a driving unit and an electric light source unit. After receiving the signal output by the control module, the driving unit adjusts the power of the electric light source unit to adjust the supplementary lighting brightness.

6. The anti-glare capture device for automobile headlights according to claim 1, characterized in that, The microcontroller module (60) includes a microcontroller chip, a sensor interface, a communication interface, and an output control port. The sensor interface is used to connect to the light sensor (50). The microcontroller chip receives and processes the signal from the light sensor (50). The communication interface is used to communicate with external devices. The output control port is used to connect to control devices.

7. The anti-glare capture device for automobile headlights according to claim 1, characterized in that, There is a distance L between the intelligent light control supplementary light module (70) and the main body of the capture machine (10), wherein L≤20cm.

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