CN210807432U

CN210807432U - Camera and monitoring system

Info

Publication number: CN210807432U
Application number: CN201922201396.7U
Authority: CN
Inventors: 李学鹏; 夏若彬; 胡菁
Original assignee: Zhejiang Dahua Technology Co Ltd
Current assignee: Zhejiang Dahua Technology Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-06-19
Anticipated expiration: 2029-12-10

Abstract

The utility model provides a camera and monitored control system. Wherein, the camera includes: a lens body; the outer surface of the front cover is provided with a first mounting surface on one side facing the lens body, the lens body is connected with the first mounting surface, and the center line of the optical axis of the lens body is perpendicular to the first mounting surface; the imaging plate, the position that the internal surface of protecgulum is used for connecting the imaging plate has the second installation face, has contained angle A between first installation face and the second installation face, and the perpendicular optics central line of imaging plate is perpendicular to the second installation face. The utility model discloses the problem that the depth of field scope is little of face camera among the prior art has been solved effectively.

Description

Camera and monitoring system

Technical Field

The utility model relates to a camera equipment field particularly, relates to a camera and monitored control system.

Background

The existing face camera usually adopts a large-aperture lens (usually larger than F1.6), the depth of field of the large-aperture lens is very small, namely the range of clear imaging, when the face of a monitored person appears in the monitoring range of the camera, a face picture only shows a clear state in a very small end range, the face image becomes blurred after exceeding the range, and the normal use of the face camera and the experience of a client are influenced.

Therefore, the problem that the depth of field range of the face camera is small exists in the prior art.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a camera and a monitoring system to solve the problem of small depth of field of the face camera in the prior art.

In order to achieve the above object, according to an aspect of the present invention, there is provided a camera including: a lens body; the outer surface of the front cover is provided with a first mounting surface on one side facing the lens body, the lens body is connected with the first mounting surface, and the center line of the optical axis of the lens body is perpendicular to the first mounting surface; the imaging plate, the position that the internal surface of protecgulum is used for connecting the imaging plate has the second installation face, has contained angle A between first installation face and the second installation face, and the perpendicular optics central line of imaging plate is perpendicular to the second installation face.

Further, the front cover comprises a cover plate and a circumferential side wall plate extending around the periphery of the cover plate, the first mounting surface is positioned on the outer surface of the cover plate, the second mounting surface is positioned on the inner surface of the cover plate, and the first mounting surface is perpendicular to the circumferential side wall plate; or the second mounting face is perpendicular to the circumferential side wall plate.

Furthermore, the lens body is provided with a third mounting surface, after the lens body is connected with the front cover, the third mounting surface is parallel to the first mounting surface, and the center line of the optical axis of the lens respectively passes through the center of the third mounting surface and the center of the first mounting surface; and/or the imaging plate is provided with a fourth mounting surface, after the imaging plate is connected with the front cover, the fourth mounting surface is parallel to the second mounting surface, and the vertical optical center line respectively passes through the center of the fourth mounting surface and the center of the second mounting surface.

Further, the central line of the optical axis of the lens passes through the central point of the imaging plate.

Further, an included angle A between the first mounting surface and the second mounting surface is larger than 0 degree and smaller than or equal to 6 degrees.

Further, the cover plate comprises a cover plate body and an adjusting piece, wherein the cover plate body and the adjusting piece are clamped with each other, the cover plate body is provided with a first mounting surface, and the adjusting piece is provided with a second mounting surface.

Further, the number of degrees of included angle A can be adjusted, and installation angle is adjusted to adjust included angle A between apron body and the regulating part through the adjustment.

Further, the connection mode of the lens body and the first mounting surface is at least one of threaded connection, adhesive dispensing connection, screw locking connection, buckle connection and adhesive bonding.

Furthermore, the front cover is provided with an adapter, the first mounting surface is positioned on the adapter, an external thread is arranged on one side, facing the adapter, of the lens body, the adapter is provided with an internal thread matched with the external thread, and the lens body is in threaded connection with the adapter.

According to another aspect of the present invention, there is provided a monitoring system comprising the above-mentioned camera.

Use the technical scheme of the utility model, camera in this application includes camera lens body, protecgulum and imaging plate. The outer surface of the front cover is provided with a first mounting surface on one side facing the lens body, the lens body is connected with the first mounting surface, and the center line of the optical axis of the lens body is vertical to the first mounting surface; the position of the inner surface of the front cover, which is used for connecting the imaging plate, is provided with a second mounting surface, an included angle A is formed between the first mounting surface and the second mounting surface, and the vertical optical center line of the imaging plate is perpendicular to the second mounting surface.

When the camera with the structure is used, the lens body is connected with the first mounting surface, the imaging plate is connected with the second mounting surface, and an included angle exists between the first mounting surface and the second mounting surface, so that an object plane, namely a human face plane, in a scene range monitored by the camera can be completely and clearly imaged on the imaging plate, and the problem that the depth range of field of the human face camera in the prior art is small is effectively solved.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows an exploded view of a camera according to an embodiment of the invention;

fig. 2 shows an exploded view of the lens body, the front cover and the imaging plate of the camera of fig. 1;

fig. 3 shows a schematic diagram of the relationship between the central line of the optical axis of the lens and the angle of the vertical optical central line in the present application.

Wherein the figures include the following reference numerals:

10. a lens body; 11. the center line of the optical axis of the lens; 12. a third mounting surface; 20. a front cover; 21. a first mounting surface; 22. a second mounting surface; 23. a circumferential side wall plate; 24. a cover plate; 241. a cover plate body; 242. an adjustment member; 30. an imaging plate; 31. a vertical optical centerline; 32. a fourth mounting surface; 33. a center point; 40. a camera rear barrel.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that, unless otherwise indicated, 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 application belongs.

In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

In order to solve the problem that the depth of field range of a human face camera in the prior art is small, the application provides the camera and the monitoring system.

The monitoring system in the present application includes a camera described below.

It should also be noted that the camera in the present application may be a face camera.

As shown in fig. 1 and 2, the camera in the present application includes a lens body 10, a front cover 20, and an imaging plate 30. The outer surface of the front cover 20 is provided with a first mounting surface 21 on one side facing the lens body 10, the lens body 10 is connected with the first mounting surface 21, and the lens optical axis central line 11 of the lens body 10 is perpendicular to the first mounting surface 21; the inner surface of the front cover 20 has a second mounting surface 22 at a position for connecting the imaging plate 30, the first mounting surface 21 and the second mounting surface 22 have an included angle a therebetween, and the vertical optical centerline 31 of the imaging plate 30 is perpendicular to the second mounting surface 22.

When the camera with the structure is used, the lens body 10 is connected with the first mounting surface 21, the imaging plate 30 is connected with the second mounting surface 22, and an included angle exists between the first mounting surface 21 and the second mounting surface 22, so that an object surface, namely a human face surface, in a scene range monitored by the camera can be completely and clearly imaged on the imaging plate 30, and the problem that the depth of field range of the human face camera in the prior art is small is effectively solved.

Moreover, the camera in the present application further includes a camera rear barrel 40, and the camera rear barrel 40 is connected to an end of the front cover 20 away from the lens body 10. It should be noted that when the camera of the present application is assembled, the imaging plate 30 is located inside the front cover 20.

It should be noted that the main purpose of the present application of the included angle a between the first mounting surface 21 and the second mounting surface 22 is to make the lens optical axis center line 11 and the vertical optical center line 31 of the imaging plate 30 included.

It should also be noted that in the present application, the specific value of the angle a and the installation height of the camera are calculated by analyzing the camera monitoring scene by means of the schem's law.

Specifically, the lens optical axis center line 11 passes through the center point 33 of the imaging plate 30. By the arrangement, the imaging effect of the camera can be effectively ensured. That is, no matter how the included angle a changes, the lens optical axis center line 11 needs to pass through the center point 33 of the imaging plate 30 in order to ensure the imaging effect of the camera.

Specifically, the front cover 20 includes a cover plate 24 and a circumferential side wall plate 23 extending around the periphery of the cover plate 24, the first mounting surface 21 being located on the outer surface of the cover plate 24, the second mounting surface 22 being located on the inner surface of the cover plate 24, the first mounting surface 21 being perpendicular to the circumferential side wall plate 23; or the second mounting surface 22 is perpendicular to the circumferential side wall plate 23. By this arrangement, an included angle between the first mounting surface 21 and the second mounting surface 22 can be ensured.

It should be noted that, although the first mounting surface 21 and the second mounting surface 22 are not perpendicular to the circumferential side wall plate 23, an included angle between the first mounting surface 21 and the second mounting surface 22 can be ensured, at this time, the lens optical axis center line 11 cannot pass through the center point 33 of the imaging plate 30, and therefore, the optimal imaging effect of the camera cannot be ensured.

Specifically, the lens body 10 has a third mounting surface 12, after the lens body 10 is connected to the front cover 20, the third mounting surface 12 is parallel to the first mounting surface 21, and the lens optical axis center line 11 passes through the center of the third mounting surface 12 and the center of the first mounting surface 21, respectively. With this arrangement, when the lens body 10 is coupled to the front cover 20, the third mounting surface 12 coincides with the first mounting surface 21, and the centers of the third mounting surface 12 and the first mounting surface 21 also coincide with each other.

Specifically, the imaging plate 30 has a fourth mounting surface 32, and after the imaging plate 30 is connected to the front cover 20, the fourth mounting surface 32 is parallel to the second mounting surface 22, and the vertical optical center line 31 passes through the center of the fourth mounting surface 32 and the center of the second mounting surface 22, respectively. With this arrangement, when the imaging plate 30 is mounted to the front cover 20, the fourth mounting surface 32 coincides with the second mounting surface 22, and the center point 33 of the fourth mounting surface 32 coincides with the center point 33 of the second mounting surface 22.

Specifically, the included angle a between the first mounting surface 21 and the second mounting surface 22 is greater than 0 degree and 6 degrees or less.

In addition, it should be noted that the specific size of the included angle a can be set according to the actual use condition, so as to ensure that the camera has the best monitoring effect.

As shown in fig. 3, the included angle B is an included angle formed by the lens optical axis center line 11 rotating counterclockwise with the center point 33 of the imaging plate 30 as a fixed point and the vertical optical center line 31, and the included angle C is an included angle formed by the lens optical axis center line 11 rotating clockwise with the center point 33 of the imaging plate 30 as a fixed point and the vertical optical center line 31. And the degrees of the included angle B and the included angle C are both more than or equal to 0 degree and less than or equal to 5 degrees.

Specifically, the cover plate 24 includes a cover plate body 241 and an adjusting piece 242 clamped to each other, the cover plate body 241 has a first mounting surface 21, and the adjusting piece 242 has a second mounting surface 22. By the arrangement, the included angle A can be adjusted, so that the field depth range of the camera can be changed.

Specifically, the degree of the included angle a can be adjusted, and the included angle a can be adjusted by adjusting the installation angle between the cover plate body 241 and the adjusting piece 242.

Specifically, the connection manner of the lens body 10 and the first mounting surface 21 is at least one of threaded connection, adhesive dispensing connection, screw locking connection, snap connection, and adhesive bonding.

In the present application, the lens body 10 and the first mounting surface 21 are connected by screwing, and after the lens body 10 is connected in place, the third mounting surface 12 of the lens body 10 coincides with the first mounting surface 21. And the connection between the lens body 10 and the front cover 20 can be ensured to be more stable by adopting a threaded connection mode.

Specifically, the front cover 20 has an adaptor, the first mounting surface 21 is located on the adaptor, one side of the lens body 10 facing the adaptor has an external thread, the adaptor has an internal thread matching with the external thread, and the lens body 10 is in threaded connection with the adaptor. Of course, the connection between the lens body 10 and the front cover 20 may also be realized by an adaptor, and the arrangement may also change the included angle a between the first mounting surface 21 and the second mounting surface 22 by adjusting the mounting angle of the adaptor.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

1. the problem that the depth of field range of the face camera in the prior art is small is effectively solved;

2. the size of the included angle A can be changed according to different use scenes so as to ensure that the camera is in the best monitoring effect;

3. the structural design is simple and reliable, and the replaceability is strong.

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A camera, comprising:

a lens body (10);

a front cover (20), wherein one side of the outer surface of the front cover (20) facing the lens body (10) is provided with a first mounting surface (21), the lens body (10) is connected with the first mounting surface (21), and a lens optical axis central line (11) of the lens body (10) is perpendicular to the first mounting surface (21);

the imaging plate (30), the position that the internal surface of protecgulum (20) is used for connecting imaging plate (30) has second installation face (22), have between first installation face (21) and the second installation face (22) contained angle A, and the perpendicular optics central line (31) of imaging plate (30) is perpendicular to second installation face (22).

2. The camera of claim 1, wherein the front cover (20) comprises a cover plate (24) and a circumferential side wall plate (23) extending around a periphery of the cover plate (24), the first mounting face (21) being located on an outer surface of the cover plate (24) and the second mounting face (22) being located on an inner surface of the cover plate (24),

the first mounting face (21) is perpendicular to the circumferential side wall plate (23); or

The second mounting surface (22) is perpendicular to the circumferential side wall plate (23).

3. The camera of claim 1,

the lens body (10) is provided with a third mounting surface (12), after the lens body (10) is connected with the front cover (20), the third mounting surface (12) is parallel to the first mounting surface (21), and the lens optical axis central line (11) respectively passes through the center of the third mounting surface (12) and the center of the first mounting surface (21); and/or

The imaging plate (30) is provided with a fourth mounting surface (32), after the imaging plate (30) is connected with the front cover (20), the fourth mounting surface (32) is parallel to the second mounting surface (22), and the vertical optical center line (31) respectively passes through the center of the fourth mounting surface (32) and the center of the second mounting surface (22).

4. The camera according to claim 3, characterized in that the lens optical axis center line (11) passes through a center point (33) of the imaging plate (30).

5. The camera according to any one of claims 1 to 4, characterized in that the angle A between the first mounting surface (21) and the second mounting surface (22) is greater than 0 degrees and equal to or less than 6 degrees.

6. The camera of claim 2, wherein the cover plate (24) comprises a cover plate body (241) and an adjusting piece (242) which are clamped to each other, the cover plate body (241) having the first mounting surface (21), and the adjusting piece (242) having the second mounting surface (22).

7. The camera of claim 6, wherein the degree of the included angle A can be adjusted, and the included angle A is adjusted by adjusting the installation angle between the cover plate body (241) and the adjusting piece (242).

8. The camera according to any one of claims 1 to 4, wherein the lens body (10) is connected to the first mounting surface (21) by at least one of a screw connection, a glue-dispensing connection, a screw-lock attachment connection, a snap connection, and an adhesive bond.

9. The camera according to any one of claims 1 to 4, characterized in that the front cover (20) has an adapter on which the first mounting surface (21) is located, a side of the lens body (10) facing the adapter having an external thread, the adapter having an internal thread cooperating with the external thread, the lens body (10) being in threaded connection with the adapter.

10. A monitoring system, characterized in that it comprises a camera according to any one of claims 1 to 9.