CN214845855U

CN214845855U - Take anti-dazzling screen structure of metal level

Info

Publication number: CN214845855U
Application number: CN202120449616.2U
Authority: CN
Inventors: 陈志刚
Original assignee: Dongguan Jiejun Plastic Products Co ltd
Current assignee: Dongguan Jiejun Plastic Products Co ltd
Priority date: 2021-03-02
Filing date: 2021-03-02
Publication date: 2021-11-23
Anticipated expiration: 2031-03-02

Abstract

The utility model discloses a take anti-dazzling screen structure of metal level has circular shape piece body, and the center of piece body is provided with the light trap, the piece body is including the first light shield layer, first PET layer, copper alloy layer, second PET layer and the second light shield layer that set gradually, the inner wall of light trap sets up to interior concavity. The utility model provides a pair of take anti-dazzling screen structure of metal level, this anti-dazzling screen adopt five layer architecture, and the different indent diameter is formed to copper alloy layer and first PET layer, second PET layer respectively again, like this, can prevent that unnecessary light reflection from getting into in the view-finder, improving imaging quality.

Description

Take anti-dazzling screen structure of metal level

Technical Field

The utility model relates to an optical device processing technology field specifically is a take anti-dazzling screen structure of metal level.

Background

The light blocking sheet, also called as light blocking sheet, is used as a necessary light blocking element in the fields of cameras, mobile phone cameras and the like, aims to prevent stray light from entering a viewfinder to influence the imaging quality, is used for the light blocking sheet in the cameras, also called as a diaphragm, a light blocking ring, a mylar sheet and the like, and has the thickness of 0.025-0.012 mm generally, and a central hole of the light blocking sheet is a light through hole. In fact, the light rays are not always irradiated in parallel, and the light rays are crossed due to different intensities in the light rays, so that the side wall of the central hole always reflects the light and part of the light enters the imager further.

At present, in the field of anti-dazzling screens, a main core process is how to reduce the side wall reflection of a central hole, usually the central hole is punched, and then light absorption paint is sprayed in the central hole to absorb light and emit less light.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take anti-dazzling screen structure of metal level, this anti-dazzling screen structure can reduce the light reflex by a wide margin to the view-finder in.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a take anti-dazzling screen structure of metal level has the circular shape piece body, and the center of piece body is provided with the light trap, the piece body is including the first light shield layer, first PET layer, copper alloy layer, second PET layer and the second light shield layer that set gradually, the inner wall of light trap sets up to interior concavity.

Further, the inner diameters of the first light-shielding layer and the second light-shielding layer are D1, the inner diameters of the first PET layer, the second PET layer and the copper alloy layer are D2, the inner diameter of the copper alloy layer is D3, and D1< D2< D3.

Furthermore, the first shading layer and the second shading layer are ink layers.

Further, the copper alloy layer is bonded with the first PET layer and the second PET layer.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model provides a pair of take anti-dazzling screen structure of metal level has circular shape piece body, and the center of piece body is provided with the light trap, the piece body is including the first light shield layer, first PET layer, copper alloy layer, second PET layer and the second light shield layer that set gradually, the inner wall of light trap sets up to interior concavity. This anti-dazzling screen adopts five layer structures, and the difference is formed different indent diameters to copper alloy-layer and first PET layer, second PET layer respectively again, like this, can prevent in unnecessary light reflection gets into the view-finder, improves the imaging quality.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a reflection diagram of the optical path of the present invention.

Fig. 3 is a schematic view of a partial structure of the present invention.

In the figure: the light-transmitting sheet comprises a sheet body-1, a first shading layer-11, a first PET layer-12, a copper alloy layer-13, a second PET layer-14, a second shading layer-15 and a light-transmitting hole-2.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the utility model provides a take anti-dazzling screen structure of metal level has circular shape piece body 1, and the center of piece body 1 is provided with light trap 2, piece body 1 is including the first light shield layer 11, first PET layer 12, copper alloy layer 13, second PET layer 14 and the second light shield layer 15 that set gradually, the inner wall of light trap sets up to interior concavity. The light shading sheet adopts a five-layer structure, and different concave diameters are formed on the copper alloy layer, the first PET layer and the second PET layer respectively, so that redundant light rays can be prevented from being reflected into a viewfinder, and the imaging quality is improved; in practical use, when light rays with different angles irradiate the concave-inward side wall, due to the concave-inward characteristic, part of the light rays can be reflected again and greatly reduce the light rays from entering the viewfinder.

In this embodiment, the first and second light-shielding layers have an inner diameter D1, the first and second PET layers have an inner diameter D2, the copper alloy layer has an inner diameter D3, and D1< D2< D3. The scheme forms the concave shape with convex stages, so that the anti-reflection effect is better compared with the arc-shaped concave. Preferably, the inner wall surface of the copper alloy layer is a rough surface to reduce reflection, and the forming process needs a slightly rough surface formed on the surface of the copper alloy during electrolytic forming.

In this embodiment, the first light-shielding layer 11 and the second light-shielding layer 15 are both ink layers. The printing ink layer adopts the printing ink of preventing printing ink of printing ink layer light transmission and extinction, prevents that the astigmatism that light passed PET formation from influencing the formation of image during this printing ink layer's effect. Specifically, referring to the light path reflection diagram shown in fig. 2, the first light shielding layer is a light absorbing ink, so that light is directly absorbed, visible light reflection can be substantially eliminated, and when other residual light is reflected to the PET layer and the copper alloy layer, corresponding blocking is formed.

The invention also provides a forming process of the light shield with the metal layer, and the implementation mode of the process is as follows.

Example 1, the following molding procedure was followed:

s1, coating a first PET layer on the upper surface of the copper alloy layer, and coating a second PET layer on the lower surface of the copper alloy layer;

s2, coating a first shading layer on the surface of the first PET layer, and coating a second shading layer on the surface of the second PET layer to form a shading belt; the shading belt is wound by belt materials after being formed, and the first shading layer and the second shading layer do not adopt anti-light-transmitting ink, so that light can be prevented from transmitting through the PET layer;

s3, punching the shading tape to form a single shading sheet body; the single light shading sheet body can be punched in different sizes according to actual needs.

S4, pre-punching the shading sheet body to form a fabrication hole; the inner wall of the smooth mirror surface is formed after punching, so that the punching precision is ensured.

S5, placing the light shading sheet body in a strong alkali solution for corrosion forming; the concentration of the strong alkali solution is 30-90%, and the temperature of the strong alkali solution is 30-40 ℃.

And S6, placing the light shielding sheet body in the electrolyte for electrolytic forming.

The forming process in the embodiment forms the inner wall with at least three different inner diameters through three times of forming, so that the formed shading sheet prevents redundant light from reflecting to enter the viewfinder, the imaging quality is improved, the formed product has good quality, the different inner diameters of each section are easily controlled accurately, and the stepped inner concave wall surface is realized.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a take anti-dazzling screen structure of metal level has the circular shape piece body, and the center of piece body is provided with light trap, its characterized in that: the sheet body comprises a first shading layer, a first PET layer, a copper alloy layer, a second PET layer and a second shading layer which are sequentially arranged, and the inner wall of the light hole is concave; the inner diameters of the first light shielding layer and the second light shielding layer are D1, the inner diameters of the first PET layer and the second PET layer are D2, the inner diameter of the copper alloy layer is D3, and D1< D2< D3.

2. The structure of claim 1, wherein: the first shading layer and the second shading layer are ink layers.

3. The structure of claim 1, wherein: the inner wall surface of the copper alloy layer is a rough surface.

4. A light-shielding sheet structure with a metal layer as claimed in any one of claims 1 to 3, wherein: the copper alloy layer is bonded with the first PET layer and the second PET layer.