A high reflectivity automotive mirror lens

Abstract

A kind of high reflectivity car reflector lens, including upper piece, lower piece, the adhesive body that the upper piece and lower piece are bonded into closed hollow structure, electrochromic liquid filled in the inner chamber of hollow structure, it is provided with conductive film on the upper surface of the lower piece, the reflectivity is greater than 55%, annularly it is provided with the shielding layer of reflectivity less than 40% on the lower surface of the upper piece, the overhead projection of the shielding layer covers the overhead projection of adhesive body.This utility model has the advantages of: can clearly distinguish display area and adhesive body setting area, it is convenient to combine and install piece body to mirror frame, and ensure that adhesive body setting area is located in lens frame, it is also convenient to check after installation, avoid the possibility that transition position between display area and adhesive body setting area is exposed outside outer frame, so that all display area is exposed in lens frame, and the visual effect is better for driving personnel.

Description

Technical Field

[0001] This utility model relates to the field of automotive rearview mirror technology, and more particularly to a high-reflectivity automotive rearview mirror lens. Background Technology

[0002] The current automatic anti-glare rearview mirror uses a sandwich structure, which consists of two pieces of hot-bent glass that are coated and then bonded together, vacuum-injected with electrochromic liquid, and then sealed and aged.

[0003] A Chinese invention patent application with application number CN201010150633.2 entitled "Vehicle Rearview Mirror Element and Assembly Equipped with These Elements" discloses a rearview mirror used by an observer in a vehicle, comprising: a mirror element including a first light-transmitting substrate including first and second surfaces and a first edge surface, the first substrate having an outer peripheral region; a second substrate including third and fourth surfaces and a second edge surface, the first and second substrates being parallel and spaced apart such that the second and third surfaces face each other to define a gap between them, the fourth surface being located on the back side of the mirror element when viewed from the observer; a first thin film stack deposited on the first substrate, the first thin film stack including a strip of spectral filter material circumferentially disposed in the outer peripheral region; a second thin film stack covering at least a central portion of the third surface; and an electrochromic medium disposed in the gap; wherein the second thin film stack includes at least one conductive layer that extends electrically across the second edge surface to the back side of the mirror element through a conductive portion. However, the difference between the ambient light intensity reflected from the outer periphery and the light intensity reflected from the inner periphery of this type of rearview mirror is no more than 10%, which makes the boundary of the outer periphery unclear when the rearview mirror is installed, making installation inconvenient and difficult to meet the visual requirements of some drivers. Therefore, the structure of this type of rearview mirror needs further improvement. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a high-reflectivity car rearview mirror lens that has a clear visual distinction between the outer peripheral area and the electrochromic area and is easy to install, in light of the above-mentioned existing technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: This high-reflectivity automotive rearview mirror lens includes an upper lens, a lower lens, an adhesive that bonds the upper and lower lenses into a closed hollow structure, and an electrochromic liquid filling the inner cavity of the hollow structure. Its characteristic is that: a conductive film with a reflectivity greater than 55% is deposited on the upper surface of the lower lens; a shielding layer with a reflectivity less than 40% is circumferentially disposed on the lower surface of the upper lens; the shielding layer is a metal shielding film made of chromium or nickel-chromium alloy plated on the surface of the upper lens; the top view projection of the shielding layer covers the top view projection of the adhesive.

[0006] As an improvement, the conductive film is preferably a metal reflective film made of silver or silver alloy material plated on the surface of the lower sheet.

[0007] In a further improvement, the top-view projection of the metal reflective film can preferably coincide with the top-view projection of the internal region enclosed by the shielding layer.

[0008] In a further improvement, a reflective film extension section capable of conducting electrode sheets can preferably be provided on the surface of the lower sheet corresponding to the metal shielding film. The reflective film extension section is also a conductive film of silver or silver alloy material plated on the surface of the lower sheet.

[0009] As an improvement, both the upper and lower sheets can preferably be curved glass made of EC glass.

[0010] As an improvement, a transparent conductive film can preferably be deposited on the surface of the upper sheet surrounded by the shielding layer.

[0011] In a further improvement, the transparent conductive film may preferably be an ITO film.

[0012] As an improvement, a notch for filling electrochromic liquid can preferably be provided on the annular adhesive, and a cap is provided on the notch.

[0013] In a further improvement, the cap may preferably be a sealing body formed after UV adhesive has solidified.

[0014] Compared with the prior art, the advantages of this utility model are as follows: a conductive film with a reflectivity greater than 55% is provided on the upper surface of the lower lens body, and a shielding layer with a reflectivity of less than 40% is plated on the surface of the upper lens body using chromium or nickel-chromium alloy material; this structure can clearly distinguish the display area and the adhesive setting area, which facilitates the assembly and installation of the lens body into the lens frame and ensures that the adhesive setting area is located in the outer frame of the lens. It also facilitates inspection after installation and avoids the possibility that the transition area between the display area and the adhesive setting area is exposed outside the outer frame. In this way, all the area exposed inside the outer frame of the lens is the display area, which provides a better visual effect for drivers and can meet the visual requirements of some high-demand drivers. Attached Figure Description

[0015] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0016] Figure 2 for Figure 1 Exploded structural diagram;

[0017] Figure 3 yes Figure 2 Exploded view of the structure of the upper and middle sections after flipping;

[0018] Figure 4This is a structural schematic diagram of an embodiment of the present utility model. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figures 1 to 4 As shown, the high-reflectivity automotive rearview mirror lens of this embodiment includes an upper lens 1, a lower lens 2, an adhesive 3 that bonds the upper lens 1 and the lower lens 2 into a closed hollow structure, and an electrochromic liquid 4 filled in the inner cavity of the hollow structure. The adhesive 3 and the electrochromic liquid 4 are known technologies and will not be described in detail. A conductive film 21 with a reflectivity greater than 55% is disposed on the upper surface of the lower lens 2, and a shielding layer 11 with a reflectivity less than 40% is disposed annularly on the lower surface of the upper lens 1. The top view projection of the shielding layer 11 covers the top view projection of the adhesive 3. The conductive film 21 is a metal reflective film made of silver or a silver alloy plated on the surface of the lower lens. The top view projection of the metal reflective film coincides with the top view projection of the inner region enclosed by the shielding layer. The shielding layer 11 is a metal shielding film made of chromium or a nickel-chromium alloy plated on the surface of the upper lens. The coating processes of the metal reflective film and the metal shielding film are prior art and will not be described in detail. Silver alloy materials and nickel-chromium alloy materials are well-known technologies, so they will not be described in detail.

[0021] A reflective film extension section, capable of conducting electrode 5, is disposed on the surface of the lower sheet corresponding to the metal shielding film. This reflective film extension section is also a conductive film plated with silver or a silver alloy on the surface of the lower sheet. Electrode 5 includes a positive electrode and a negative electrode, arranged as follows: Figure 4 As shown, the specific setup and electrical working principle are well-known technologies, so they will not be described in detail here.

[0022] Both the upper sheet 1 and the lower sheet 2 are curved glass pieces made of EC glass. The curved glass has a convex center, resembling a convex lens. A transparent conductive film 12 is deposited on the surface of the upper sheet, which is surrounded by a shielding layer. The transparent conductive film 12 is an ITO film. ITO material and coating process are known technologies and will not be described in detail.

[0023] A notch 31 for filling electrochromic liquid is provided on the annular adhesive 3, and a cap is provided on the notch 31. The cap is a sealing body formed after the UV adhesive has solidified. The UV adhesive is an adhesive that solidifies after being irradiated by ultraviolet light. The specific filling process of the electrochromic liquid is a known technology and will not be described in detail.

Claims

1. A high-reflectivity automotive rearview mirror lens, comprising an upper lens (1), a lower lens (2), an adhesive (3) for bonding the upper lens (1) and the lower lens (2) into a closed hollow structure, and an electrochromic liquid (4) filling the cavity of the hollow structure, characterized in that: A conductive film (21) with a reflectivity greater than 55% is deposited on the upper surface of the lower sheet (2), and a shielding layer (11) with a reflectivity less than 40% is arranged in a ring on the lower surface of the upper sheet (1). The shielding layer (11) is a metal shielding film made of chromium or nickel-chromium alloy plated on the surface of the upper sheet. The top view projection of the shielding layer (11) covers the top view projection of the adhesive (3).

2. The automotive rearview mirror lens according to claim 1, characterized in that: The conductive film (21) is a metal reflective film made of silver or silver alloy material plated on the surface of the lower sheet.

3. The automotive rearview mirror lens according to claim 2, characterized in that: The top view projection of the metal reflective film coincides with the top view projection of the internal region enclosed by the shielding layer.

4. The automotive rearview mirror lens according to any one of claims 1 to 3, characterized in that: A reflective film extension section that can conduct electrode sheet (5) is provided on the surface of the lower sheet corresponding to the metal shielding film. The reflective film extension section is also a conductive film of silver or silver alloy material plated on the surface of the lower sheet.

5. The automotive rearview mirror lens according to any one of claims 1 to 3, characterized in that: Both the upper sheet (1) and the lower sheet (2) are curved glass made of EC glass.

6. The automotive rearview mirror lens according to any one of claims 1 to 3, characterized in that: A transparent conductive film (12) is deposited on the surface of the upper sheet surrounded by the shielding layer.

7. The automotive rearview mirror lens according to claim 6, characterized in that: The transparent conductive film (12) is an ITO film.

8. The automotive rearview mirror lens according to any one of claims 1 to 3, characterized in that: An annular adhesive (3) has a notch (31) for filling with electrochromic liquid, and a cap is provided on the notch (31).

9. The automotive rearview mirror lens according to claim 8, characterized in that: The cap is a sealing body formed after UV adhesive solidifies.

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