Anti-dazzle rearview mirror lens and anti-dazzle rearview mirror

Abstract

The utility model discloses an anti-dazzle rearview mirror lens and an anti-dazzle rearview mirror, which are particularly suitable for an automobile rearview mirror so as to reduce the interference of light of a rear vehicle on a driver during night driving and improve the driving safety. The lens comprises a cover plate, a first glass layer, a flexible liquid crystal layer and a second glass layer which are sequentially adhered and fixed. Wherein a reflection area and an induction area are arranged on the face, away from the flexible liquid crystal layer, of the second glass layer, and the reflection area is plated with a total reflection plating layer or a semi-transparent and semi-reflection plating layer. The optical property of the flexible liquid crystal layer can be changed in a power-on state, and the automatic adjusting function is achieved through a control circuit. In addition, a front light sensing component and a rear light sensing component are additionally arranged and used for detecting the front light intensity and the rear light intensity respectively, through the multi-layer structure and the advanced control circuit design, effective protection of headlamps of a rear coming vehicle is achieved, and the safety of night driving is improved.

Description

Technical Field

[0001] The present application relates to the technical field of rearview mirrors, and in particular to an anti-glare rearview mirror lens and an anti-glare rearview mirror. Background Art

[0002] When driving at night, lights from vehicles behind you often reflect through the rearview mirror into the driver's eyes, causing glare, affecting vision and concentration, and increasing the risk of traffic accidents. While traditional rearview mirrors can prevent glare to a certain extent, their effectiveness is limited under strong sunlight. Therefore, a more effective anti-glare rearview mirror lens is needed to address this problem.

[0003] Glare occurs when the eyes are directly exposed to intense light, causing the photoreceptors in the retina to temporarily stop functioning, resulting in visual impairment. During nighttime driving, the intense light from the headlights of vehicles behind is a major source of glare. This glare, reflected from the rearview mirror and reflected back into the driver's eyes, not only reduces visual clarity but also distracts the driver, making it difficult to concentrate on the road and other traffic participants. Furthermore, prolonged exposure to strong light can cause eye fatigue, further compromising driving safety.

[0004] Traditional rearview mirrors typically utilize simple reflective mirrors. While these provide basic rearward visibility, they don't offer optimal glare protection in strong sunlight. Some high-end models may feature auto-dimming rearview mirrors, which automatically adjust the reflectivity of the mirror surface based on the intensity of the rear light to reduce glare. However, these products are expensive and not all models come standard with this feature.

[0005] To address these issues, the present invention proposes a novel anti-glare rearview mirror lens. This lens utilizes a flexible liquid crystal layer as its core component. This layer detects ambient light intensity in real time through a sensing area and automatically adjusts the light transmittance of the flexible liquid crystal layer using a control circuit, thereby effectively protecting against oncoming headlights. Compared to traditional anti-glare rearview mirrors, this lens offers greater flexibility and adaptability, providing improved anti-glare performance under varying lighting conditions. Furthermore, this lens incorporates advanced material technology and precision manufacturing processes to ensure product durability and reliability, meeting the modern automotive industry's demand for high performance and low cost. Utility Model Content

[0006] The main purpose of this application is to propose an anti-glare rearview mirror lens, aiming to solve the current rearview mirror glare problem.

[0007] To achieve the above-mentioned object, the present application proposes an anti-glare rearview mirror lens, which includes a cover plate, a first glass layer, a flexible liquid crystal layer, and a second glass layer that are sequentially adhered and fixed;

[0008] Wherein, a side of the second glass layer away from the flexible liquid crystal layer is provided with a reflection area and a sensing area, and the reflection area is coated with a total reflection coating or a semi-transparent and semi-reflective coating.

[0009] Furthermore, the sensing area is circular, and the diameter of the sensing area ranges from 1 mm to 5 mm.

[0010] Furthermore, the thickness of the first glass layer is 0.5 mm to 2 mm.

[0011] Furthermore, the thickness of the second glass layer is 0.5 mm to 2 mm.

[0012] Furthermore, the thickness of the flexible liquid crystal layer is 0.1 mm to 0.5 mm.

[0013] Furthermore, the cover is made of transparent plastic or glass.

[0014] Furthermore, the total reflection coating or the semi-transmissive semi-reflective coating is composed of multiple layers of dielectric materials.

[0015] Furthermore, the flexible liquid crystal layer can change its optical properties when powered on.

[0016] Furthermore, the sensing area is used to detect the intensity of ambient light and automatically adjust the transmittance of the flexible liquid crystal layer.

[0017] Furthermore, the anti-glare rearview mirror lens also includes a control circuit for controlling the voltage of the flexible liquid crystal layer to achieve an automatic adjustment function.

[0018] Furthermore, the sensing area faces the front light-sensing component and is used to detect the intensity of the light in front.

[0019] Furthermore, it also includes a rear light-sensing component, which is arranged behind the sensing area and is used to detect the intensity of light from the rear.

[0020] Furthermore, the control circuit includes an automatic adjustment module and an active adjustment module, which are respectively used to automatically and manually adjust the transmittance of the flexible liquid crystal layer.

[0021] Furthermore, the control circuit also includes a protection module for preventing overcurrent from damaging the flexible liquid crystal layer.

[0022] Furthermore, a sealing ring is provided around the flexible liquid crystal layer to prevent dust and moisture from entering.

[0023] Furthermore, a rubber gasket is provided on the edge of the cover plate to enhance the fixing effect and sealing performance.

[0024] Furthermore, a support frame is provided between the first glass layer and the second glass layer to maintain the relative positions of the layers stable.

[0025] Furthermore, the support frame is made of a lightweight aluminum alloy material with high strength and corrosion resistance.

[0026] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0027] The sensor area detects ambient light intensity in real time and automatically adjusts the transmittance of the flexible liquid crystal layer, effectively reducing glare from rear-view headlights and improving nighttime driving safety. In addition to automatic adjustment, manual adjustment is also possible through the control circuit to meet diverse driving needs and provide a more personalized user experience. The multi-layer design, with adhesively bonded layers, ensures overall structural stability and durability, capable of withstanding prolonged use and various harsh environments. This reduces eye fatigue in bright sunlight, helps maintain driver focus, and reduces the risk of traffic accidents. Suitable for all types of rearview mirrors, from standard sedans to large trucks, it has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the anti-glare rearview mirror lens;

[0029] Figure 2 This is a schematic diagram of the circuit control of the anti-glare rearview mirror lens;

[0030] Figure 3 Schematic diagram of the coating on the back of the second glass layer of the anti-glare rearview mirror lens.

[0031] Description of Figure Numbers:

[0032] Cover plate 101 , first glass layer 102 , flexible liquid crystal layer 103 , second glass layer 104 , sensing area 105 , and reflection area 106 . DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the schemes in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments in this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0034] Example 1

[0035] This embodiment shows the basic structure and working principle of the utility model in detail. Figure 1 The anti-glare rearview mirror lens structure includes a cover plate 101, a first glass layer 102, a flexible liquid crystal layer 103, and a second glass layer 104 that are sequentially glued and fixed. Specifically, the cover plate 101 is made of transparent plastic or glass material, has good light transmittance and weather resistance, and is 2mm thick. The first glass layer 102 is 1mm thick and its main function is to support and protect the flexible liquid crystal layer 103. The flexible liquid crystal layer 103 is 0.3mm thick and can change its optical properties when powered, thereby achieving light adjustment. Please refer to Figure 3 The second glass layer 104 is 1.5mm thick and has a reflective area 106 and a sensing area 105 on one side. The reflective area 106 is coated with a fully reflective coating or a translucent, semi-reflective coating. The sensing area 105 is essentially an uncoated area on the second glass layer 104. This allows the front photosensitive element inside the rearview mirror to sense the light intensity in front of the rearview mirror, while the rear photosensitive element installed behind the rearview mirror shell senses the light intensity behind the rearview mirror.

[0036] The lens is mounted in a specially designed housing with space reserved for the control circuit and other electronic components. The control circuit is connected to the flexible liquid crystal layer 103 via wires to adjust its transmittance. The specific connection method is as follows:

[0037] Please refer to Figure 2 The front photosensitive component is located on the front and back sides of the second glass layer 104, corresponding to the sensing area 105, and is used to detect the intensity of the light in front. The front photosensitive component is connected to the automatic adjustment module in the control circuit via wires. When a change in the light intensity is detected, the automatic adjustment module calculates the required transmittance of the flexible liquid crystal layer 103 based on a preset algorithm and sends a signal to the flexible liquid crystal layer 103 via wires to adjust its transmittance. Simultaneously, data from the front photosensitive component can also be transmitted to the active adjustment module, allowing the user to manually adjust the transmittance as needed.

[0038] The rear-view mirror's rear-view sensor is located on the back of the mirror and detects rearward light intensity. This sensor is also connected via wires to the automatic adjustment module in the control circuit. When changes in rearward light intensity are detected, the automatic adjustment module calculates the required transmittance of the flexible liquid crystal layer 103 based on a preset algorithm and sends a signal to the flexible liquid crystal layer 103 via wires to adjust its transmittance. Furthermore, data from the rear-view mirror can be transmitted to the active adjustment module, allowing the user to manually adjust the transmittance as needed.

[0039] When the reflective area 106 is coated with a total reflection coating, a sensing area 105 needs to be set. The area of ​​the sensing area 105 is related to the cross-sectional area of ​​the front photosensitive component and is generally set to 1 mm. Of course, it can also be related to the sensing area directly opposite the photosensitive component. The larger the area in front of the probe of the photosensitive component, the larger the area of ​​the sensing area 105 that needs to be opened, and it can even be a circle with a diameter of 1 cm or 2 cm. The front photosensitive component is connected to the automatic adjustment module in the control circuit via a wire. When the sensing area 105 detects a change in the ambient light intensity, the automatic adjustment module calculates the required transmittance of the flexible liquid crystal layer 103 according to a preset algorithm and sends a signal to the flexible liquid crystal layer 103 via a wire to adjust its transmittance. This allows the front light to penetrate the front photosensitive component to more accurately detect the front light intensity.

[0040] Users can manually adjust the transmittance using knobs or buttons. These input devices are connected to the active adjustment module in the control circuit via wires. When the user operates the knobs or buttons, the active adjustment module receives the corresponding instructions and adjusts the transmittance of the flexible liquid crystal layer 103 accordingly.

[0041] To prevent overcurrent from damaging the flexible liquid crystal layer 103, the control circuit also includes a protection module. This module is connected to the entire circuit system via wires and monitors the current in real time. If an abnormal current (such as excessive current) is detected, the protection module immediately cuts off the power supply to protect the flexible liquid crystal layer 103 and other electronic components.

[0042] To further illustrate the working principle, the following is a specific working scenario:

[0043] When driving at night, the headlights of vehicles behind you shine onto the rearview mirror. If the reflective area 106 is coated with a fully reflective coating, some of this light will be detected by the front light sensor. Based on the detected ambient light intensity, the front light sensor adjusts the transmittance of the flexible liquid crystal layer 103 through a control circuit. When powered, the flexible liquid crystal layer 103 changes its optical properties, reducing the intensity of light reflected into the driver's eyes and achieving anti-glare effects.

[0044] When driving during the day, if the sunlight is strong, the front and rear photosensitive components will detect a higher ambient light intensity and adjust the transmittance of the flexible liquid crystal layer 103 through the control circuit to reduce the discomfort caused by direct sunlight.

[0045] Manual adjustment by the user: If the driver feels that the automatic adjustment is not ideal, they can manually adjust it by operating the knob or button. The active adjustment module will adjust the transmittance of the flexible liquid crystal layer 103 according to the user's input signal to meet personal preferences.

[0046] It should be noted that when the reflective area 106 is coated with a semi-transparent and semi-reflective coating, there is no need to set the sensing area 105. In this case, the control circuit can adjust the transmittance of the flexible liquid crystal layer 103 according to preset fixed parameters, or rely entirely on manual adjustment by the user.

[0047] The utility model realizes effective protection of the headlights of vehicles coming from behind by means of a multi-layer structure and an advanced control circuit design, thereby improving the safety of nighttime driving.

[0048] Example 2

[0049] This embodiment shows in detail the structure of the rearview mirror lens and its working principle of the utility model. Figure 1 The anti-glare rearview mirror lens structure includes a cover plate 101, a first glass layer 102, a flexible liquid crystal layer 103 and a second glass layer 104 which are sequentially glued and fixed. Specifically, the cover plate 101 is made of transparent plastic or glass material, has good light transmittance and weather resistance, and is 2 mm thick. The thickness of the first glass layer 102 is 1 mm, and its main function is to support and protect the flexible liquid crystal layer 103. The thickness of the flexible liquid crystal layer 103 is 0.3 mm, and its optical properties can be changed when powered on, thereby achieving light adjustment. The second glass layer 104 is 1.5 mm thick, and a reflection area 106 and a sensing area 105 are provided on one side thereof. The reflection area 106 is coated with a total reflection coating or a semi-transparent and semi-reflective coating. The sensing area 105 is actually used to mark an area on the second glass layer 104 without coating, so that the front photosensitive component installed inside the rearview mirror can sense the light intensity in front of the rearview mirror, and the light intensity behind the rearview mirror is sensed by the rear photosensitive component installed behind the rear shell of the rearview mirror.

[0050] The lens is mounted in a specially designed housing with space reserved for the control circuit and other electronic components. The control circuit is connected to the flexible liquid crystal layer 103 via wires to adjust its transmittance. The specific connection method is as follows:

[0051] Front-view photosensitive components: Located on the front and back sides of the second glass layer 104, corresponding to the sensing area 105, they detect the intensity of incoming light. These components are connected to the automatic adjustment module in the control circuit via wires. When changes in incoming light intensity are detected, the automatic adjustment module calculates the desired transmittance of the flexible liquid crystal layer 103 based on a preset algorithm and sends a signal to the flexible liquid crystal layer 103 via wires to adjust its transmittance. Data from the front-view photosensitive components can also be transmitted to the active adjustment module, allowing the user to manually adjust the transmittance as needed.

[0052] The rear-view mirror's rear-view sensor is located on the back of the rearview mirror and detects rearward light intensity. This sensor is also connected to the automatic adjustment module in the control circuit via wires. When changes in rearward light intensity are detected, the automatic adjustment module calculates the required transmittance of the flexible liquid crystal layer 103 based on a preset algorithm and sends a signal to the flexible liquid crystal layer 103 via wires to adjust its transmittance. Furthermore, data from the rear-view sensor can be transmitted to the active adjustment module, allowing the user to manually adjust the transmittance as needed.

[0053] Sensing area 105: Sensing area 105 is circular with a diameter of 1mm-5mm. The area of ​​sensing area 105 is related to the cross-sectional area of ​​the front photosensitive element and is generally set to 1mm. However, it can also be related to the sensing area directly opposite the photosensitive element. The larger the area in front of the photosensitive element's probe, the larger the required sensing area 105, even up to a circular diameter of 1cm or 2cm. The front photosensitive element is connected to the automatic adjustment module in the control circuit via wires. When sensing area 105 detects a change in ambient light intensity, the automatic adjustment module calculates the required transmittance of the flexible liquid crystal layer 103 based on a preset algorithm and sends a signal to the flexible liquid crystal layer 103 via wires to adjust its transmittance. This allows light from the front to penetrate the front photosensitive element, allowing for more accurate detection of the light intensity.

[0054] Control Circuit: The anti-glare rearview mirror also includes a control circuit for controlling the voltage of the flexible liquid crystal layer 103 to achieve automatic adjustment. The control circuit includes an automatic adjustment module and an active adjustment module, which are used to automatically and manually adjust the light transmittance of the flexible liquid crystal layer 103, respectively.

[0055] Protection Module: To prevent overcurrent from damaging the flexible liquid crystal layer 103, the control circuit also includes a protection module. This module is connected to the entire circuit system via wires and monitors current flow in real time. If an abnormal current (such as excessive current) is detected, the protection module immediately cuts off power to protect the flexible liquid crystal layer 103 and other electronic components.

[0056] Sealing ring: A sealing ring is provided around the flexible liquid crystal layer 103 to prevent dust from entering.

[0057] Support frame: A support frame is provided between the first glass layer 102 and the second glass layer 104 to maintain the relative positions of the layers stable.

[0058] Rubber gasket on the edge of cover 101: A rubber gasket is provided on the edge of cover 101 to enhance the fixing effect and sealing.

[0059] Control circuit enclosure: The control circuit is installed in a dedicated enclosure to prevent external interference.

[0060] To further illustrate the working principle, the following is a specific working scenario:

[0061] When driving at night, the headlights of vehicles behind you shine onto the rearview mirror. If the reflective area 106 is coated with a fully reflective coating, some of this light will be detected by the front light sensor. Based on the detected ambient light intensity, the front light sensor adjusts the transmittance of the flexible liquid crystal layer 103 through a control circuit. When powered, the flexible liquid crystal layer 103 changes its optical properties, reducing the intensity of light reflected into the driver's eyes and achieving anti-glare effects.

[0062] When driving during the day, if the sunlight is strong, the front and rear photosensitive components will detect a higher ambient light intensity and adjust the transmittance of the flexible liquid crystal layer 103 through the control circuit to reduce the discomfort caused by direct sunlight.

[0063] Manual adjustment by the user: If the driver feels that the automatic adjustment is not ideal, they can manually adjust it by operating the knob or button. The active adjustment module will adjust the transmittance of the flexible liquid crystal layer 103 according to the user's input signal to meet personal preferences.

[0064] It should be noted that when the reflective area 106 is coated with a semi-transparent and semi-reflective coating, there is no need to set the sensing area 105. In this case, the control circuit can adjust the transmittance of the flexible liquid crystal layer 103 according to preset fixed parameters, or rely entirely on manual adjustment by the user.

[0065] The utility model realizes effective protection of the headlights of vehicles coming from behind by means of a multi-layer structure and an advanced control circuit design, thereby improving the safety of nighttime driving.

[0066] It should be noted that the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0067] The above are only partial or preferred embodiments of the present application. Neither the text nor the drawings can limit the scope of protection of the present application. All equivalent transformations made using the contents of the present application specification and drawings under the overall concept of the present application, or direct / indirect application in other related technical fields are included in the scope of protection of the present application.

Claims

1. An anti-glare rearview mirror lens, characterized in that: The anti-glare rearview mirror lens comprises a cover plate, a first glass layer, a flexible liquid crystal layer, and a second glass layer which are sequentially adhered and fixed; Wherein, a side of the second glass layer away from the flexible liquid crystal layer is set as a reflection area and a sensing area, and the reflection area is coated with a total reflection coating or a semi-transmissive and semi-reflective coating.

2. The anti-glare rearview mirror lens according to claim 1, characterized in that: The sensing area is circular, and the diameter of the sensing area ranges from 1 mm to 5 mm.

3. The anti-glare rearview mirror lens according to claim 1, characterized in that: The thickness of the first glass layer is 0.5 mm to 2 mm.

4. The anti-glare rearview mirror lens according to claim 1, characterized in that: The thickness of the second glass layer is 0.5 mm to 2 mm.

5. The anti-glare rearview mirror lens according to claim 1, characterized in that: The thickness of the flexible liquid crystal layer is 0.1 mm to 0.5 mm.

6. The anti-glare rearview mirror lens according to claim 1, characterized in that: The cover plate is made of transparent plastic or glass.

7. The anti-glare rearview mirror lens according to claim 1, characterized in that: The anti-glare rearview mirror lens also includes a control circuit for controlling the voltage of the flexible liquid crystal layer to achieve an automatic adjustment function.

8. The anti-glare rearview mirror lens according to claim 7, characterized in that: The control circuit includes a front photosensitive component, and the sensing area is opposite to the front photosensitive component for detecting the intensity of the light in front; the control circuit also includes a rear photosensitive component, which is arranged behind the sensing area and is used to detect the intensity of the light in the rear.

9. The anti-glare rearview mirror lens according to claim 7, characterized in that: The control circuit includes an automatic adjustment module and an active adjustment module, which are respectively used to automatically and manually adjust the transmittance of the flexible liquid crystal layer.

10. An anti-glare rearview mirror, characterized in that: The anti-glare rearview mirror comprises the anti-glare rearview mirror lens according to any one of claims 1 to 9.

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