CN215499281U

CN215499281U - Camera with camera lens

Info

Publication number: CN215499281U
Application number: CN202122200814.8U
Authority: CN
Inventors: 吴本华; 吴剑飞
Original assignee: Huaibei Kanghui Electronic Technology Co ltd
Current assignee: Huaibei Kanghui Electronic Technology Co ltd
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2022-01-11
Anticipated expiration: 2031-09-13

Abstract

The utility model discloses a camera, which comprises a camera body and a lens, wherein the front end of the lens is provided with a front end lens, an external lens combination is arranged inside a lens barrel of the lens, and a camera bellows with a shutter and an image sensor are arranged inside the camera body; the camera further comprises an auxiliary lens, the auxiliary lens is coaxially arranged between the image sensor and the shutter or between the external lens combination and the shutter, and the auxiliary lens is used for converting non-parallel light rays of linear imaging into parallel light rays or nearly parallel light rays of the non-linear imaging and projecting the parallel light rays or nearly parallel light rays onto a photosensitive surface of the image sensor. The camera can change some linear imaging model cameras into nonlinear models by simply adding the auxiliary lens under the condition of not changing the structure of the existing camera, so that the aim of improving the definition of pictures is achieved, and when the pictures shot by the standard lens and the telephoto lens camera are used for VR splicing synthesis, the definition, goodness of fit and three-dimensional effect of the pictures are improved.

Description

Camera with camera lens

Technical Field

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

Background

The camera is an apparatus for forming an image by using an optical imaging principle and recording the image using a negative film, and light reflected from a subject is focused by a photographic lens (a photographing objective lens) and a shutter for controlling an exposure amount, and then the subject forms a latent image on a photosensitive material in a dark box.

At present, the photosensitive surface of an image sensor adopted by an existing camera is a planar structure, and when a linear imaging model (such as a telephoto lens, a standard lens and the like) is adopted, the problems of blurring, insufficient depth of field and the like exist, and when the image sensor is used for VR shooting, defects of insufficient definition of VR picture stitching and splicing, dislocation of splicing, image quality reduction, reduction of a three-dimensional effect and the like exist.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a camera.

The utility model realizes the purpose through the following technical scheme:

a camera comprises a camera body and a lens connected to the front end of the camera body, wherein a front end lens is arranged at the front end of the lens, an external lens combination is arranged inside a lens barrel of the lens, and a camera bellows with a shutter and an image sensor are arranged inside the camera body from front to back;

the camera further comprises an auxiliary lens, the auxiliary lens is coaxially arranged between the image sensor and the shutter or between the external lens combination and the shutter, and the auxiliary lens is used for converting non-parallel light rays of linear imaging into parallel light rays or nearly parallel light rays of the non-linear imaging and projecting the parallel light rays or nearly parallel light rays onto a photosensitive surface of the image sensor.

The further improvement lies in that the auxiliary lens adopts a conventional spherical lens or a Fresnel spherical lens.

The further improvement is that when the auxiliary lens is coaxially arranged between the image sensor and the shutter, the auxiliary lens is detachably arranged in the body;

when the auxiliary lens is coaxially arranged between the external lens combination and the shutter, the auxiliary lens is detachably arranged outside the body, the auxiliary lens further comprises an installation part, and the auxiliary lens is detachably arranged in the installation part.

The further improvement is that the mounting part is connected with the body and the lens through a thread or a buckle structure.

The utility model has the beneficial effects that: the camera can change some linear imaging model cameras into nonlinear models by simply adding the auxiliary lens under the condition of not changing the existing camera structure, thereby obviously improving the definition of pictures, and obviously improving the definition, goodness of fit and three-dimensional effect of the pictures when the pictures shot by the standard lens and the telephoto lens camera are used for VR splicing synthesis.

Drawings

FIG. 1 is a schematic structural view of an auxiliary lens according to the present invention;

FIG. 2 is a schematic structural view of the auxiliary lens of the present invention when externally disposed;

FIG. 3 is a schematic diagram of a different structure of an auxiliary lens;

FIG. 4 is a schematic cross-sectional view of a concave Fresnel concave spherical body;

fig. 5 is a schematic cross-sectional view of a convex fresnel spherical body.

In the figure: 1. a body; 2. a lens; 3. a front end lens; 4. an external lens assembly; 5. a shutter; 6. a dark box; 7. an image sensor; 8. an auxiliary lens; 9. and (4) a mounting piece.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

Example 1

As shown in fig. 1, a camera includes a body 1 and a lens 2 connected to the front end of the body 1, the front end of the lens 2 is provided with a front lens 3, an external lens assembly 4 is arranged inside a lens barrel of the lens 2, a camera bellows 6 with a shutter 5 and an image sensor 7 are arranged inside the body 1 from front to back (of course, the body 1 and the lens 2 also include some other necessary components, such as a focusing mechanism, a main board, a chip, etc., which are all the prior art, and the description is not repeated herein; the camera further comprises an auxiliary lens 8, the auxiliary lens 8 is detachably mounted inside the camera body 1, the auxiliary lens 8 is coaxially arranged between the image sensor 7 and the shutter 5, and the auxiliary lens 8 is used for changing non-parallel light rays of linear imaging into parallel light rays or approximate parallel light rays of the non-linear imaging to be projected onto a photosensitive surface of the image sensor 7.

The camera mainly aims to change some linear imaging model cameras into non-linear models (such as a telephoto lens and a standard lens), so that the definition of pictures and the quality of VR picture stitching are improved, and the difficulty of VR picture stitching is reduced.

Of course, when the auxiliary lens 8 is coaxially disposed between the image sensor 7 and the shutter 5, the auxiliary lens 8 may be provided with a mounting member 9, and the auxiliary lens 8 may be detachably mounted inside the camera through the mounting member 9.

Example 2

As shown in fig. 2, a camera comprises a camera body 1 and a lens 2 connected to the front end of the camera body 1, wherein the front end of the lens 2 is provided with a front lens 3, an external lens assembly 4 is arranged inside a lens barrel of the lens 2, and a camera bellows 6 with a shutter 5 and an image sensor 7 are arranged inside the camera body 1 from front to back; the camera further comprises an auxiliary lens 8, the camera further comprises a mounting part 9 arranged between the camera body 1 and the camera lens 2, the auxiliary lens 8 is detachably mounted in the mounting part 9, the mounting part 9 is connected with the camera body 1 and the camera lens 2 through threads or a buckle structure, and the camera is convenient to use along with the mounting.

In addition, as shown in fig. 3, the auxiliary lens 8 is a conventional spherical lens or a fresnel spherical lens, which can be selected according to the requirement, wherein the fresnel lens has the characteristics of planarization, lightness and thinness, and is convenient to install.

The camera is mainly used for standard and long-focus lenses, and a few wide-angle lenses can be used. Because most lenses such as standard and long focus lenses are pinhole imaging (linear imaging model), light projected on an image sensor is non-parallel light, and a picture has a blurring phenomenon. The addition of the auxiliary lens 8 can change non-parallel light rays into parallel light rays or close to the parallel light rays, and then the parallel light rays are projected onto the photosensitive surface of the image sensor 7, so that the aim of eliminating the blurring phenomenon is fulfilled. The incident angle of the changed light on the image sensor 7 is not necessarily a right angle, the telephoto lens can adopt a right angle, and the incident angle of the standard lens is slightly larger than 90 degrees, so that the pixel loss rate is low when the processing such as VR picture stitching and splicing is carried out at the later stage.

Compared with the traditional camera, the picture displayed by the projection of the parallel light coming out of the auxiliary lens 8 onto the image sensor 7 is a radially deformed picture, so that the direct picture output by the camera is a deformed two-dimensional plane picture. The deformed two-dimensional plane picture can be directly played on a plane display device or printed on a printing carrier, or the two-dimensional deformed picture can be converted into an undeformed three-dimensional picture or a spherical picture through software, the spherical picture is played point to point on the spherical carrier or printed on a corresponding three-dimensional bearing surface, the picture is not deformed and has no blurring phenomenon, and the three-dimensional effect can be further improved. In addition, the picture quality of VR picture synthesis is improved, and the synthesis difficulty is reduced.

It needs to be further explained that: the Fresnel structure used by the camera comprises a conventional Fresnel structure and a special Fresnel structure, the conventional Fresnel structure is a Fresnel spherical structure which is a whole flat surface, and the special Fresnel structure is a Fresnel spherical structure which is wholly pressed to be concave or is raised by the top. For example, fig. 4 shows a concave fresnel concave spherical surface structure, and fig. 5 shows a convex fresnel convex spherical surface structure.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. The utility model provides a camera, camera includes fuselage (1) and connects camera lens (2) at fuselage (1) front end, its characterized in that: a front-end lens (3) is arranged at the front end of the lens (2), an external lens combination (4) is arranged inside a lens barrel of the lens (2), and a dark box (6) with a shutter (5) and an image sensor (7) are arranged inside the machine body (1) from front to back;

the camera further comprises an auxiliary lens (8), the auxiliary lens (8) is coaxially arranged between the image sensor (7) and the shutter (5) or between the external lens combination (4) and the shutter (5), and the auxiliary lens (8) is used for changing non-parallel light rays of linear imaging into parallel light rays or approximate parallel light rays of the non-linear imaging to project onto a photosensitive surface of the image sensor (7).

2. A camera according to claim 1, characterized in that: the auxiliary lens (8) is a conventional spherical lens or a Fresnel spherical lens.

3. A camera according to claim 1, characterized in that: when the auxiliary lens (8) is coaxially arranged between the image sensor (7) and the shutter (5), the auxiliary lens (8) is detachably arranged in the machine body (1);

when auxiliary lens (8) coaxial line was located between external lens combination (4) and shutter (5), auxiliary lens (8) demountable installation was outside fuselage (1), auxiliary lens (8) still include installed part (9), and auxiliary lens (8) demountable installation is in installed part (9).

4. A camera according to claim 3, characterized in that: the mounting piece (9) is connected with the camera body (1) and the camera lens (2) through threads or a buckle structure.