CN216649792U

CN216649792U - Video camera

Info

Publication number: CN216649792U
Application number: CN202123092443.2U
Authority: CN
Inventors: 李燕
Original assignee: Zhejiang Dahua Technology Co Ltd
Current assignee: Zhejiang Dahua Technology Co Ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-05-31
Anticipated expiration: 2031-12-08

Abstract

The utility model relates to a camera, which comprises a shell, a lens and an extinction part, wherein the lens and the extinction part are arranged in the shell, the shell is provided with a transparent window for the lens to acquire images, the periphery of the extinction part is connected to the inner wall of the shell, the lens penetrates through the extinction part and faces the transparent window, and the extinction part, the shell and the transparent window jointly seal one end of the lens facing the transparent window. According to the camera provided by the utility model, the extinction member arranged opposite to the transparent window can absorb and eliminate light rays which do not enter the lens, so that the probability of reflecting stray light into the lens again is effectively reduced, the image definition is further improved, meanwhile, the structure and the arrangement mode of the extinction member do not influence the shooting view of the lens, the manufacturing and installation processes are simple and convenient, the price is low, and the extinction requirements of various lenses can be met.

Description

Video camera

Technical Field

The utility model relates to the technical field of cameras, in particular to a camera.

Background

Stray light is a ubiquitous problem in the field of security cameras, because a camera generally comprises a lens, a window and a camera main structure, normal imaging light enters the window and the lens from the outside in sequence, and finally images on a chip. However, the internal structures of the lens, the window and the camera have certain reflectivity, and light rays incident on the lens are reflected by the lens, then reflected by the window and incident into the lens; or the light reflected by the window can be emitted to a structural part in the camera, then reflected to the window and then reflected back to the lens, and the light reflected back and forth finally reaches the imaging chip to cause stray light on the image, and the stray light can form a plurality of light spots or light spots to influence the definition of the image.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a camera.

The utility model provides a camera, which comprises a shell, a lens and an extinction part, wherein the lens and the extinction part are arranged in the shell, the shell is provided with a transparent window for the lens to acquire images, the peripheral side of the extinction part is connected to the inner wall of the shell, the lens penetrates through the extinction part and faces the transparent window, and the extinction part, the shell and the transparent window jointly seal one end of the lens, which faces the transparent window.

So set up, the extinction piece that sets up with transparent window relatively can absorb the elimination with the light that does not kick into in the camera lens, effectively reduces the stray light and reflects the probability in the camera lens again, and then improves the image definition, and the structure and the setting mode of extinction piece do not influence the shooting field of vision of camera lens simultaneously, and preparation and mounting process are simple and convenient, low price, can adapt to the extinction demand of multiple camera lens.

In one embodiment of the utility model, the extinction member comprises a substrate, one side of the substrate is provided with an extinction surface, and the extinction surface is arranged on one side of the substrate relatively close to the transparent window.

So set up, the extinction surface is towards transparent window, effectively reduces stray light reflectivity, improves the definition that the camera shot the image.

In one embodiment of the utility model, one side of the substrate is a frosted surface, an ink layer is sprayed on the frosted surface, and the side with the ink layer is close to the transparent window; or one side of the substrate is a frosted surface, the other side of the substrate is sprayed with an ink layer, and one side with the ink layer is relatively close to the transparent window.

So set up, black printing ink can effectively extinction, and frosted structure makes the extinction surface rough uneven simultaneously, easily forms the diffuse reflection, better elimination stray light.

In an embodiment of the present invention, the light-eliminating member further includes a flannelette stacked on the substrate, and the flannelette is located on the same side of the substrate close to the transparent window and on the side far away from the substrate to form the light-eliminating surface.

So set up, the coarse cotton flannel in surface easily forms the diffuse reflection, consequently is close to one side of transparent window with the cotton flannel and regards as the extinction face, can effectively reduce stray light's reflectivity, guarantees the extinction effect.

In one embodiment of the utility model, the substrate is mylar.

So set up, the mylar piece material is thinner, light in weight, and has insulating and the good characteristics of toughness for can enough avoid increasing camera weight in the camera, can not exert an influence to compactness, precision between the camera structure simultaneously.

In one embodiment of the utility model, the mylar tab is black.

So set up, black has the extinction effect, chooses for use black mylar piece can further guarantee the extinction effect.

In one embodiment of the utility model, the optical axes of the extinction member and the lens are perpendicular to each other.

So set up, be convenient for the assembly between extinction spare and camera lens and the casing, can more directly eliminate stray light rapidly simultaneously.

In one embodiment of the utility model, an acute angle is formed between one side of the light extinction part close to the transparent window and the optical axis of the lens.

So set up, change stray light ray reflection direction and reflection distance when increaseing the extinction area, further strengthen the extinction reliability.

In one embodiment of the utility model, the extinction surface is a bending surface; or, the extinction surface is a curved surface.

So set up, the extinction face is the extinction area that the equal ability of bending face or curved surface can increase extinction piece, improves the extinction effect.

In an embodiment of the utility model, a clamping portion is convexly arranged on the periphery of the extinction member close to the lens, and the clamping portion at least surrounds part of the lens body of the lens.

With the arrangement, the connection firmness between the extinction piece and the lens can be enhanced, and the extinction effect is prevented from being influenced by the displacement of the extinction piece.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a camera provided by the present invention;

FIG. 2 is a schematic view of the structure of the extinction member shown in FIG. 1 according to the present invention;

fig. 3 is a schematic structural diagram of a second embodiment of the camera provided by the present invention;

fig. 4 is a schematic structural diagram of a third embodiment of the camera provided by the present invention;

fig. 5 is a schematic structural diagram of a fourth embodiment of the camera provided by the present invention;

fig. 6 is a schematic structural diagram of a fifth embodiment of the video camera provided by the present invention.

100. A camera; 10. a housing; 11. a transparent window; 20. a lens; 30. a light attenuating member; 31. a substrate; 32. flannelette; 33. a clamping part; 301. a extinction surface; 302. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It will be understood that when an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, 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 belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a camera 100 according to a first embodiment of the present invention. The utility model provides a camera 100, which is used in the field of image acquisition.

Stray light is a ubiquitous problem in the field of security cameras, because a camera generally comprises a lens, a window and a camera main structure, normal imaging light enters the window and the lens from the outside in sequence, and finally images on a chip. However, the internal structures of the lens, the window and the camera have certain reflectivity, and light rays incident on the lens are reflected by the lens, then reflected by the window and incident into the lens; or the light reflected by the window can be emitted to a structural part in the camera, then reflected to the window and then reflected back to the lens, and the light reflected back and forth finally reaches the imaging chip to cause stray light on the image, and the stray light can form some light spots or light spots to influence the definition of the image.

Based on this, referring to fig. 1 again, the present invention provides a camera 100, which includes a housing 10, a lens 20 and an extinction member 30, wherein the lens 20 and the extinction member 30 are disposed in the housing 10, the housing 10 is provided with a transparent window 11 for the lens 20 to capture images, the periphery of the extinction member 30 is connected to the inner wall of the housing 10, the lens 20 is disposed through the extinction member 30 and faces the transparent window 11, and the extinction member 30, the housing 10 and the transparent window 11 together enclose one end of the lens 20 facing the transparent window 11.

According to the camera 100 provided by the utility model, the extinction member 30 arranged opposite to the transparent window 11 can absorb and eliminate light rays which are not emitted into the lens 20, so that the probability of reflecting stray light into the lens 20 again is effectively reduced, the image definition is further improved, meanwhile, the structure and the arrangement mode of the extinction member 30 do not influence the shooting view of the lens 20, the manufacturing and installation process is simple and convenient, the price is low, and the extinction requirements of various lenses 20 can be met.

Referring to fig. 2, fig. 2 is a schematic structural view of the extinction member 30 shown in fig. 1 according to the present invention; it can be understood that the extinction member 30 is made of a material with low reflectivity, specifically, in the present invention, a through hole 302 for the lens 20 to pass through is formed in the middle of the extinction member 30, further, the extinction member 30 includes a substrate 31, a extinction surface 301 is formed on one side of the substrate 31, and the extinction surface 301 is disposed on one side of the substrate 31 relatively close to the transparent window 11. With such an arrangement, the extinction surface 301 faces the transparent window 11, so that the stray light reflectivity is effectively reduced, and the image shooting definition of the camera 100 is improved.

Referring to fig. 2 again, preferably, in the present embodiment, the light extinction member 30 further includes a flannelette 32 stacked on the substrate 31, and the flannelette 32 is located on the same side of the substrate 31 close to the transparent window 11 and forms a light extinction surface 301 on a side far from the substrate 31. The lint 32 with the rough surface is easy to form diffuse reflection, so that one side of the lint 32 close to the transparent window 11 is used as a extinction surface 301, the reflectivity of stray light can be effectively reduced, and the extinction effect is guaranteed. It is understood that in other embodiments, other materials with rough surfaces may be used as the light-eliminating surface 301, as long as the light-eliminating surface 301 is black and can form diffuse reflection.

Preferably, in the present embodiment, the substrate 31 is a mylar sheet. The mylar film is thin in material, light in weight, has the characteristics of good insulation and toughness, can be used in the camera 100, can avoid increasing the weight of the camera 100, and cannot influence the tightness and the precision between the structural parts of the camera 100.

Specifically, the manufacturing process of the extinction member 30 is that a flannelette 32 is pasted on one side surface of a large mylar sheet by glue, the flannelette is cut into a required extinction sheet shape after being flattened by a machine, and the side pasted with the flannelette 32 is the extinction surface 301.

Further, preferably, the mylar sheet is black. The black has the extinction effect, chooses for use black mylar piece can further guarantee the extinction effect. It can be understood that the Mylar film also has the appearance of a plurality of color classifications of milky white, black, natural color, transparent color and the like. As long as the effect of the mylar film in the utility model is not affected, in other embodiments, mylar films of other colors may be used as the substrate 31, and ink or other black paint may be sprayed on a side of the mylar film close to and/or away from the transparent window 11 to ensure the light absorption effect.

In another embodiment of the present invention, the matting member 30 may also only include a substrate 31, wherein one side of the substrate 31 is a frosted surface, the frosted surface is coated with an ink layer, and the side having the ink layer is close to the transparent window 11; or, one side of the substrate 31 is a frosted surface, and the other side is sprayed with an ink layer, and the side with the ink layer is relatively close to the transparent window 11. Black ink can effectively absorb light, and the frosted structure makes the extinction surface 301 rough and uneven, easily forms diffuse reflection, better elimination stray light. In this embodiment, the substrate 31 is preferably a transparent PC sheet, one side surface of the transparent PC sheet is frosted, the other side surface is ink-printed, and the surface printed with ink is the extinction surface 301.

In the first embodiment of the present invention, it is preferable that the light extinction member 30 and the optical axis of the lens 20 are perpendicular to each other. With such an arrangement, the assembling between the light-eliminating member 30 and the lens 20 and the housing 10 is facilitated, and the stray light can be eliminated more directly and rapidly.

It is understood that, in other embodiments, the extinction member 30 may have an inclination angle with the optical axis of the lens 20, as long as the extinction member 30, the housing 10 and the transparent window 11 are not affected to seal the end of the lens 20 facing the transparent window 11, so that light cannot enter the side of the extinction member 30 away from the transparent window 11.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a second embodiment of the video camera 100 provided by the present invention; in the second embodiment of the present invention, it is preferable that the side of the light extinction member 30 close to the transparent window 11 is at an acute angle with respect to the optical axis of the lens 20. By the arrangement, the reflection direction and the reflection distance of the stray light rays are changed while the area of the extinction surface 301 is enlarged, and the extinction reliability is further enhanced.

Referring to fig. 4 and 5, fig. 4 is a schematic structural diagram of a third embodiment of the video camera 100 provided by the present invention; fig. 5 is a schematic structural diagram of a fourth embodiment of the video camera 100 provided by the present invention; in order to increase the extinction area, in some embodiments of the present invention, the extinction surface 301 is a bending surface; preferably, in the third embodiment of the present invention, the bending surface is formed by two folding surfaces, and an included angle is formed between the two folding surfaces. It is understood that in other embodiments, the bending surfaces may be formed by three or more than four folding surfaces, and the degree of the included angle between adjacent folding surfaces is not limited, as long as the extinction effect of the extinction member 30 is not affected.

In some embodiments of the present invention, the extinction surface 301 is a curved surface to increase the extinction area. Preferably, in the fourth embodiment of the present invention, the curved surface is formed by one arc-shaped surface, and it should be understood that, in other embodiments, as long as the extinction function of the extinction member 30 is not affected, the position of the center of the arc-shaped surface is not limited, and the curved surface may be formed by two or more than three arc-shaped surfaces.

It is understood that, in the present invention, the shape of the side of the extinction member 30 facing away from the extinction surface 301 may not be limited, and may be the same as the shape of the extinction surface 301 or different from the shape of the extinction surface 301, as long as the extinction effect of the extinction member 30 is not affected.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a fifth embodiment of the video camera 100 provided by the present invention. Preferably, in this embodiment, the extinction member 30 is convexly provided with a clamping portion 33 on the periphery side close to the lens 20, and the clamping portion 33 at least surrounds a part of the lens body of the lens 20. Preferably, the locking portion 33 protrudes toward the transparent window 11 and is connected to the edge of the through hole 302. With such an arrangement, the connection firmness between the extinction member 30 and the lens 20 can be enhanced, and the extinction effect is prevented from being influenced by the displacement of the extinction member 30.

The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.

Claims

1. The utility model provides a camera, its characterized in that places in including casing (10) camera lens (20) and extinction piece (30) of casing (10), casing (10) are provided with the confession transparent window (11) that camera lens (20) gathered the image, all sides of extinction piece (30) connect in the inner wall of casing (10), camera lens (20) are worn to locate extinction piece (30) and orientation transparent window (11), extinction piece (30) casing (10) and transparent window (11) seal jointly camera lens (20) orientation the one end of transparent window (11).

2. The camera according to claim 1, characterized in that the matt member (30) comprises a substrate (31), wherein a matt surface (301) is provided on one side of the substrate (31), and wherein the matt surface (301) is provided on a side of the substrate (31) adjacent to the transparent window (11).

3. The camera according to claim 2, characterized in that one side of the substrate (31) is a frosted surface, the frosted surface being coated with an ink layer, the side with the ink layer being adjacent to the transparent window (11); or the like, or, alternatively,

one side of the base plate (31) is a frosted surface, the other side of the base plate is sprayed with an ink layer, and one side with the ink layer is close to the transparent window (11).

4. The camera according to claim 2, wherein the matt member (30) further comprises a fleece (32) laminated to the substrate (31), the fleece (32) being located on a side of the substrate (31) adjacent to the transparent window (11), a side of the fleece (32) remote from the substrate (31) forming the matt surface (301).

5. The camera according to any of claims 2 to 4, wherein the substrate (31) is a mylar foil.

6. The camera of claim 5, wherein the mylar sheet is black.

7. The camera of claim 1, wherein the optical axes of the extinction member (30) and the lens (20) are perpendicular to each other.

8. A camera according to claim 1, characterized in that the side of the extinction member (30) adjacent to the transparent window (11) is at an acute angle to the optical axis of the lens (20).

9. The camera according to claim 2, wherein the extinction face (301) is a bending face; or the extinction surface (301) is a curved surface.

10. The camera according to claim 1, wherein a clamping portion (33) is convexly provided on a peripheral side of the extinction member (30) close to the lens (20), and the clamping portion (33) at least surrounds a part of the lens body of the lens (20).