Streaming media inside rear-view mirror

Abstract

The utility model discloses a streaming media inside rear-view mirror which comprises a display screen, a lens and a first optical adhesive layer, the display screen and the lens are oppositely arranged, and the first optical adhesive layer is arranged between the display screen and the lens. The lens is provided with a first bonding surface, the display screen is provided with a second bonding surface, and two sides of the first optical adhesive layer are respectively bonded with the first bonding surface and the second bonding surface; the first optical adhesive layer covers the first adhesive surface and the second adhesive surface. According to the utility model, the first bonding surface and the second bonding surface are completely bonded through the optical adhesive layer, so that an air layer between the lens and the display screen is eliminated, and the refraction phenomenon of light in the transmission process is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle rearview mirror technology, and in particular to a streaming media rearview mirror. Background Technology

[0002] Streaming rearview mirrors capture images from a rear-end camera and transmit them in real time to the mirror's display screen, offering significant advantages such as reduced blind spots and enhanced night vision. However, in traditional streaming rearview mirror designs, the lens and display screen are typically fixed together using a frame. While this frame-mounting method is relatively simple to manufacture and assemble, it presents a significant problem: an air gap exists between the lens and the display screen.

[0003] The presence of an air layer not only increases the refraction and scattering of light, but may also cause light to reflect at the interface between the air and the lens or display screen. Refracted light can cause image distortion or blurring, while reflected light may interfere with the display of the image, reduce the image's clarity and contrast, and thus affect the visual effect of streaming media. Utility Model Content

[0004] In order to overcome at least one of the defects of the prior art, the present invention provides a streaming media rearview mirror, which fully bonds the first adhesive surface and the second adhesive surface through an optical adhesive layer to eliminate the air layer between the lens and the display screen, thereby effectively reducing the refraction of light during transmission.

[0005] The technical solution adopted by this utility model to solve its problem is:

[0006] A streaming media rearview mirror includes a display screen, a lens, and a first optical adhesive layer. The display screen and the lens are disposed opposite to each other, and the first optical adhesive layer is disposed between the display screen and the lens. The lens has a first adhesive surface, and the display screen has a second adhesive surface. Both sides of the first optical adhesive layer are respectively bonded to the first adhesive surface and the second adhesive surface. The first optical adhesive layer covers the first adhesive surface and the second adhesive surface.

[0007] Furthermore, the thickness of the first optical adhesive layer is H, and the value of H ranges from 0.2 to 0.5 mm.

[0008] Furthermore, H is 0.25 mm.

[0009] Furthermore, the lens includes a first glass substrate, a reflective polarizer is provided on one side of the first glass substrate, and the first adhesive surface is formed on the reflective polarizer; the display screen includes a second glass substrate, a first polarizer is provided on the side of the second glass substrate facing the first glass substrate, and the second adhesive surface is formed on the first polarizer; both sides of the first optical adhesive layer are respectively bonded to the reflective polarizer and the first polarizer.

[0010] Furthermore, the display screen includes a second polarizer, which is attached to the side of the second glass substrate away from the first glass substrate.

[0011] Furthermore, the display screen includes a backlight film, which is attached to the side of the second polarizer away from the second glass substrate.

[0012] Furthermore, the streaming media rearview mirror includes a housing with an opening; the display screen and the lens are both disposed within the housing, a protective layer is provided at the opening, the periphery of the protective layer is connected to the housing, and the protective layer is disposed opposite to the lens.

[0013] Furthermore, a second optical adhesive layer is provided between the lens and the protective layer, a third adhesive surface is provided on the side of the lens facing the protective layer, and a fourth adhesive surface is provided on the protective layer. The two sides of the second optical adhesive layer are respectively bonded to the third adhesive surface and the fourth adhesive surface.

[0014] Furthermore, a third polarizer is provided on the side of the first glass substrate away from the second glass substrate, and the third adhesive surface is formed on the third polarizer; the protective layer is transparent glass, and the two sides of the second optical adhesive layer are respectively bonded to the transparent glass and the third polarizer; the second optical adhesive layer covers the third adhesive surface.

[0015] Furthermore, the thickness of the second optical adhesive layer is 0.2-0.5 mm.

[0016] In summary, the streaming media rearview mirror provided by this utility model has the following technical effects:

[0017] This invention uses an optical adhesive layer to fully bond the first and second adhesive surfaces, thereby eliminating the air layer between the lens and the display screen. Since the refractive index of the first optical adhesive layer is between that of air and the lens or display screen, it acts as a transition layer, effectively reducing light refraction during transmission. Simultaneously, the full bonding between the display screen and the lens achieves a tight connection, enhancing connection stability and reducing chromatic aberration and glare. Attached Figure Description

[0018] Figure 1 This is a schematic diagram showing the disassembled structure of the display screen, lens, and protective layer according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of the display screen according to an embodiment of the present utility model;

[0020] Figure 3 This is a front view of the display screen, lens, and protective layer assembled according to an embodiment of the present invention;

[0021] Figure 4 for Figure 3 Sectional view at point AA;

[0022] Figure 5 This is a schematic diagram of the structure of the display screen and lens during assembly according to an embodiment of the present invention.

[0023] The meanings of the reference numerals in the attached figures are as follows:

[0024] 1. Display screen; 11. Second glass substrate; 12. First polarizer; 13. Second polarizer; 2. Lens; 3. First optical adhesive layer; 4. Protective layer; 5. Second optical adhesive layer. Detailed Implementation

[0025] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0028] See Figure 3 This utility model discloses a streaming media rearview mirror, see reference. Figure 1 and Figure 5It includes a display screen 1, a lens 2, and a first optical adhesive layer 3. Specifically, the display screen 1 and the lens 2 are arranged opposite to each other, and the first optical adhesive layer 3 is disposed between the display screen 1 and the lens 2. The lens 2 has a first adhesive surface, the display screen 1 has a second adhesive surface, and the two sides of the first optical adhesive layer 3 are respectively bonded to the first adhesive surface and the second adhesive surface; and the first optical adhesive layer 3 covers the first adhesive surface and the second adhesive surface.

[0029] Based on this structure, during assembly, a first optical adhesive layer 3 can be first applied to the second adhesive surface of the display screen 1, covering the second adhesive surface; then, the first adhesive surface of the lens 2 is brought close to the second adhesive surface and bonded to the first optical adhesive layer 3. During the bonding process, care should be taken to eliminate air bubbles and impurities to ensure the bonding and display effects.

[0030] When using the streaming rearview mirror of this invention, the display screen 1 of the streaming rearview mirror emits light containing real-time image information of the area behind the vehicle. The light emitted from the display screen 1 first passes through a first optical adhesive layer 3 that is tightly bonded to it. After passing through the first optical adhesive layer 3, the light reaches the lens 2, which allows the light from the display screen 1 to pass through and continue propagating forward.

[0031] It should be noted that there is a significant difference in refractive index between the air layer and the lens 2 or display screen 1. When light enters the air layer from the display screen 1 or the lens 2 from the air layer, the direction of light propagation is deflected due to the change in refractive index, i.e., refraction occurs. This refraction causes a deviation in the light transmission path, thus affecting the transmission efficiency and accuracy of the light. Therefore, this application, by providing a first optical adhesive layer 3, can eliminate direct contact between the air layer and the lens 2 or display screen 1, thereby reducing the impact of the refractive index difference on light transmission.

[0032] Specifically, the first optical adhesive layer 3 can be an OCA, OCR, or similar adhesive layer, which typically possesses characteristics such as high transparency, stable refractive index, and excellent optical performance. Since the refractive index of the first optical adhesive layer 3 is usually between that of air and the lens 2 or display screen 1, it acts as a transition layer. When light enters the optical adhesive layer from the display screen 1, the degree of light deflection decreases due to the gradual change in refractive index; similarly, when light enters the lens 2 from the optical adhesive layer, the degree of light deflection further decreases due to the gradual change in refractive index. Thus, by incorporating the optical adhesive layer, the refraction of light during transmission can be effectively reduced.

[0033] Furthermore, scattering refers to the phenomenon where light scatters in various directions when it encounters an inhomogeneous medium or interface during transmission. Inhomogeneous factors such as tiny particles, dust, or air bubbles present in the air layer can all cause light scattering. Optical adhesive layers typically possess high purity and uniformity, effectively reducing the impact of these inhomogeneities on light and thus minimizing scattering.

[0034] This reduces light refraction and scattering during transmission, thereby improving image clarity and contrast. The display effect of the streaming rearview mirror is significantly improved, allowing the driver to see road conditions behind the vehicle more clearly. Furthermore, the display screen 1 and the lens 2 are fully bonded together, enhancing connection stability and reducing color difference and glare issues.

[0035] Furthermore, the thickness of the first optical adhesive layer 3 is H, and the value of H ranges from 0.2 to 0.5 mm.

[0036] It should be noted that this range of values ​​is not set arbitrarily; it needs to take into account the connection effect between the display screen 1 and the lens 2, as well as the display effect of the rearview mirror.

[0037] Specifically, the primary function of the first optical adhesive layer 3 is to eliminate the air gap between the display screen 1 and the lens 2, thereby reducing refraction and scattering of light during transmission. Therefore, the thickness H of the adhesive layer needs to be sufficiently thin to ensure that light can pass through smoothly without excessive optical distortion. However, if the thickness H is less than 0.2 mm, the excessively thin adhesive layer may result in insufficient bonding strength, affecting the stability of the display screen 1 and the lens 2. Therefore, it is necessary to ensure sufficient bonding strength of the adhesive layer while maintaining optical performance.

[0038] Conversely, if the thickness H is set greater than 0.5mm, an excessively thick adhesive layer may increase the amount of adhesive used, raising both cost and weight. Furthermore, an excessively thick adhesive layer may cause a longer focal length, shifting the image position of the rearview mirror and increasing the depth of field. Increased depth of field can affect image sharpness, leading to a decrease in image quality.

[0039] Therefore, when the value of H is in the range of 0.2-0.5mm, the bonding strength between the display screen 1 and the lens 2 is guaranteed, while the lens depth is not increased excessively, thus ensuring the display effect of the image.

[0040] Preferably, H is 0.25mm. This 0.25mm adhesive layer thickness provides sufficient bonding strength. This makes the connection between the display screen 1 and the lens 2 more secure, preventing loosening or detachment due to vibration or impact. Simultaneously, the 0.25mm adhesive layer thickness is thin enough to ensure that light remains smooth as it passes through the adhesive layer, reducing optical distortion caused by refraction and scattering. This helps maintain the consistency of optical transmission between the display screen 1 and the lens 2, improving image clarity. Furthermore, the 0.25mm adhesive layer thickness does not significantly change the focal length of the entire optical system, thus maintaining the stability of the rearview mirror's imaging position and avoiding image quality degradation caused by increased depth of field.

[0041] Furthermore, the lens 2 includes a first glass substrate, and a reflective polarizer is provided on one side of the first glass substrate, with a first adhesive surface formed on the reflective polarizer. See also... Figure 2 The display screen 1 includes a second glass substrate 11, on the side of the second glass substrate 11 facing the first glass substrate, a first polarizer 12 is provided, and a second adhesive surface is formed on the first polarizer 12. The first optical adhesive layer 3 is bonded to the reflective polarizer and the first polarizer 12 on both sides, respectively.

[0042] Based on this structure, when the pixels on display 1 emit light and generate an image, the light is polarized by the first polarizer 12 to ensure image clarity and contrast. The light then passes through the first optical adhesive layer 3 via the first polarizer 12, then through the reflective polarizer, and finally enters the driver's eyes.

[0043] When the streaming rearview mirror functions as a reflector, light from behind the vehicle shines directly onto the reflective polarizer of the mirror. The reflective polarizer has a specific polarization direction, allowing only light with the same polarization direction to pass through and be reflected. When light hits the reflective polarizer, light with the correct polarization direction is reflected. Finally, the reflected light enters the driver's eyes, forming the image of what's behind them.

[0044] The first optical adhesive layer 3 can effectively bond the reflective polarizer and the first polarizer 12 together to form a flat and stable optical interface, preventing them from loosening or falling off due to vibration, temperature changes or external impact, and preventing warping.

[0045] It should be noted that in this embodiment, the lens 2 can be the existing RPM lens 2.

[0046] Furthermore, the display screen 1 includes a second polarizer 13, and the second polarizer 13 is attached to the side of the second glass substrate 11 away from the first glass substrate.

[0047] Thus, through the combined action of the two polarizers, only light rays conforming to the two polarization directions can be observed by the driver. This helps reduce stray light interference and improves the color saturation and contrast of the image.

[0048] Furthermore, the display screen 1 includes a backlight film, and the backlight film is attached to the side of the second polarizer 13 away from the second glass substrate 11.

[0049] Based on this structure, when the streaming rearview mirror needs to display an image, the backlight film starts to emit light. The light emitted by the backlight film passes through the second polarizer 13, the pixels of the display screen 1, and the first polarizer 12, and is finally projected onto the reflective polarizer to form the image observed by the driver.

[0050] The backlight film can be a diffusion film, a brightness enhancement film (prism sheet 2) or the like in the prior art, which can provide stable and uniform backlight illumination for the display screen 1, so that the display screen can display images normally under the illumination of the backlight.

[0051] Therefore, the backlight film is the main source of light emission from the display screen 1. The light emitted by it is modulated by the pixels of the display screen 1, and with the combined action of the two polarizers, a clear and vivid image can be formed.

[0052] Furthermore, the lens 2 can also be an LC lens 2 or an EC lens 2 as in the prior art. This invention preferably uses an LC lens as the lens 2; specifically, the LC lens includes two opposing first glass substrates, with a liquid crystal layer disposed between the two first glass substrates. During use, the arrangement of the liquid crystal molecules can be controlled by electronic signals, thereby changing the propagation path of light and achieving various optical effects.

[0053] It should be noted that the display screen 1 also includes two opposing second glass substrates 11, and a liquid crystal layer is also provided between the two second glass substrates 11. In use, the alignment direction of the liquid crystal molecules can be controlled by electronic signals, thereby changing the degree of light transmission and realizing the change of pixel brightness and color. Both the first glass substrate and the second glass substrate 11 can be transparent glass.

[0054] Furthermore, the streaming media rearview mirror includes a housing, specifically, the housing has an opening, and both the display screen 1 and the lens 2 are disposed within the housing. A protective layer 4 is provided at the opening, and the periphery of the protective layer 4 is connected to the housing; the protective layer 4 and the lens 2 are disposed opposite each other.

[0055] Among them, the protective layer 4 can be protective glass, which is usually made of transparent and wear-resistant materials to ensure that it has good light transmission and durability.

[0056] Further, see Figure 3 and Figure 4 A second optical adhesive layer 5 is provided between the lens 2 and the protective layer 4. Specifically, a third adhesive surface is provided on the side of the lens 2 facing the protective layer 4, and a fourth adhesive surface is provided on the protective layer 4. The two sides of the second optical adhesive layer 5 are respectively bonded to the third adhesive surface and the fourth adhesive surface.

[0057] Based on this structure, after connecting the lens 2 to the display screen 1, a second optical adhesive layer 5 can be provided on the third adhesive surface of the lens 2, and then the fourth adhesive surface of the protective layer 4 is brought close to the third adhesive surface and bonded to the second optical adhesive layer 5.

[0058] Because the second optical adhesive layer 5 possesses excellent optical properties, it ensures that light does not undergo significant refraction, reflection, or scattering during transmission between the lens 2 and the protective layer 4, thereby maintaining image clarity and accuracy. Simultaneously, the adhesive layer 5 forms a strong bond between the lens 2 and the protective layer 4, improving the overall durability and stability of the streaming rearview mirror. Furthermore, the second optical adhesive layer 5 also acts as a sealant, effectively preventing moisture and dust from entering through the gaps between the lens 2 and the protective layer 4, protecting the internal electronic components and optical assemblies of the streaming rearview mirror from damage.

[0059] The second optical adhesive layer 5 can also be an OCA, OCR, or other adhesive layer, with a thickness of 0.2-0.5 mm, preferably 0.25 mm. This ensures a strong connection between the lens 2 and the protective layer 4, as well as a suitable depth of field.

[0060] Furthermore, a third polarizer is provided on the side of the first glass substrate away from the second glass substrate 11, and a third adhesive surface is formed on the third polarizer; wherein, the protective layer 4 is light-transmitting glass, and the two sides of the second optical adhesive layer 5 are respectively bonded to the light-transmitting glass and the third polarizer; in addition, the second optical adhesive layer 5 covers the third adhesive surface.

[0061] The third polarizer controls the polarization direction of light, reducing reflection and scattering within the media-connected rearview mirror, thereby improving image clarity and contrast. The second optical adhesive layer 5 has excellent bonding properties, firmly bonding the transparent glass (protective layer 4) to the third polarizer, enhancing the overall stability and durability of the media-connected rearview mirror.

[0062] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A streaming rearview mirror, characterized by: The mirror includes a display screen, a lens, and a first optical adhesive layer, the display screen is opposite to the lens, and the first optical adhesive layer is arranged between the display screen and the lens; the lens has a first adhesive surface, the display screen has a second adhesive surface, two sides of the first optical adhesive layer are bonded with the first adhesive surface and the second adhesive surface respectively, and the first optical adhesive layer covers the first adhesive surface and the second adhesive surface.

2. The flush-mounted interior rearview mirror of claim 1, wherein: The thickness of the first optical adhesive layer is H, and the value range of H is 0.2-0.5mm.

3. The flush-mounted interior rearview mirror of claim 2, wherein: The H is 0.25mm.

4. The flush-mounted rearview mirror according to claim 1, characterized in that: The lens includes a first glass substrate, one side of the first glass substrate is provided with a reflective polarizer, and the first adhesive surface is formed on the reflective polarizer; the display screen includes a second glass substrate, one side of the second glass substrate facing the first glass substrate is provided with a first polarizer, and the second adhesive surface is formed on the first polarizer; and two sides of the first optical adhesive layer are bonded with the reflective polarizer and the first polarizer respectively.

5. The flush-mounted rearview mirror according to claim 4, characterized in that: The display screen includes a second polarizer, and the second polarizer is attached to one side of the second glass substrate away from the first glass substrate.

6. The flush-mounted rearview mirror according to claim 5, characterized in that: The display screen includes a backlight film, and the backlight film is attached to one side of the second polarizer away from the second glass substrate.

7. The flush-mounted rearview mirror according to claim 4, characterized in that: The streaming rearview mirror includes a housing, and the housing has an opening; the display screen and the lens are arranged in the housing, a protective layer is arranged at the opening, the periphery of the protective layer is connected with the housing, and the protective layer is opposite to the lens.

8. The flush-mounted rearview mirror according to claim 7, characterized in that: A second optical adhesive layer is arranged between the lens and the protective layer, one side of the lens facing the protective layer is provided with a third adhesive surface, the protective layer has a fourth adhesive surface, and two sides of the second optical adhesive layer are bonded with the third adhesive surface and the fourth adhesive surface respectively.

9. The flush-mounted rearview mirror according to claim 8, characterized in that: One side of the first glass substrate away from the second glass substrate is provided with a third polarizer, and the third adhesive surface is formed on the third polarizer; the protective layer is light-transmitting glass, two sides of the second optical adhesive layer are bonded with the light-transmitting glass and the third polarizer respectively, and the second optical adhesive layer covers the third adhesive surface.

10. The stream-embedded rearview mirror of claim 8, wherein: The thickness of the second optical adhesive layer is 0.2-0.5mm.

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