CN114070989A

CN114070989A - Video camera

Info

Publication number: CN114070989A
Application number: CN202111491311.9A
Authority: CN
Inventors: 关宏杰; 田伟; 薛康
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-02-18

Abstract

The application provides a camera, including support, lens subassembly and reflector assembly. The lens assembly comprises a lens, and the lens comprises a lens arranged at the front end of the lens. The mirror assembly and the lens assembly are arranged on the support along the first direction, the mirror assembly comprises a mirror, the lens assembly is rotatably arranged on the support, the mirror is rotatably arranged on the support by taking a second direction perpendicular to the first direction as an axis, the lens faces the mirror, the mirror inclines relative to the lens, and the mirror is used for reflecting at least part of incident light to the lens. The monitoring range can be enlarged by the rotation of the reflector and the rotation of the lens component, and the large-range monitoring of the camera is realized.

Description

Video camera

Technical Field

The application relates to the technical field of video monitoring, in particular to a camera.

Background

The camera is widely applied to a plurality of scenes such as schools, companies and banks, the lens used by the camera needs to meet the application requirement of the current scene, but the shooting visual angle of some lenses is small, and the requirement of the monitoring range under a specific scene cannot be met.

Disclosure of Invention

The present application provides an improved camera.

The present application provides a camera, including:

a support;

the lens assembly comprises a lens, and the lens comprises a lens arranged at the front end of the lens; and

a mirror assembly, the mirror assembly with the lens assembly arrange in along a first direction in the support, the mirror assembly includes the mirror, the lens assembly rotationally set up in the support, the mirror assembly rotationally set up in the support with perpendicular to a second direction of first direction is the axle, the lens orientation the mirror, just the mirror relative the lens slope, the mirror is used for at least part of incident light reflection to the lens.

Optionally, the lens assembly is rotatably disposed on the bracket by taking a third direction perpendicular to the first direction and the second direction as an axis.

Optionally, including the worm wheel and the worm that mutually support, the worm is followed the second direction sets up and uses the second direction rotationally set up in for the axle the support, worm wheel fixed connection in lens subassembly and with the worm meshing, the worm with the worm wheel cooperation makes the lens subassembly with the third direction is for the axle the support rotates.

Optionally, the support includes the main part, certainly the supporting part that the main part protrusion set up and protrusion in the installation department that the supporting part set up, the installation department is equipped with the intercommunication the inboard of support and the hole in the outside, the worm passes through the hole is worn to locate the installation department.

Optionally, the lens assembly includes a lens holder, the lens is fixedly disposed on the lens holder, the lens holder includes a first side surface and a second side surface, which are oppositely disposed along the third direction, a rotation shaft is fixedly disposed on the first side surface, and the rotation shaft passes through the holder and can rotate relative to the holder.

Optionally, the lens holder includes a mounting groove for accommodating the lens, the mounting groove includes an opening, a bottom end disposed opposite to the opening, and a sidewall connected to the bottom end, the sidewall includes a first sidewall and a second sidewall disposed opposite to each other, and a third sidewall connecting the first sidewall and the second sidewall, the lens holder further includes a mounting wall extending from one end of the first sidewall or the third sidewall close to the first sidewall, and the rotating shaft is disposed on the mounting wall; and/or

The second side face is provided with a bulge, the bracket is provided with an arc-shaped groove matched with the bulge, and the bulge can be arranged in the arc-shaped groove in a sliding manner along the arc-shaped groove; and/or

The support is provided with a mounting hole matched with the rotating shaft, the rotating shaft extends into the mounting hole, and a rotating shaft bearing is arranged between the rotating shaft and the mounting hole, so that the lens component rotates relative to the support; and/or

The support is provided with scale marks at intervals along the edge of the arc-shaped groove.

Optionally, the lens assembly is rotatably disposed on the bracket by taking the second direction as an axis.

Optionally, the bracket includes a base, and a first bracket and a second bracket that are disposed on the base, the mirror assembly is disposed on the first bracket, the lens assembly is disposed on the second bracket, and the second bracket is rotatably disposed on the base with the second direction as an axis.

Optionally, the lens subassembly include the camera lens fixed plate and with the lens holder that the camera lens fixed plate is connected, the camera lens centre gripping set up in the camera lens fixed plate with between the lens holder, the lens holder with the leg joint, the camera lens fixed plate include butt portion and with the connecting portion that butt portion connects, butt portion including support hold in the camera lens dorsad the butt face of one side of lens holder and connect the butt face with the connection face of connecting portion, the connection face certainly the butt face extremely connecting portion are to being close to the direction slope of camera lens, connecting portion fixed connection in the lens holder.

Optionally, the mirror assembly includes a mirror motor and a rotary bracket fixedly disposed on the bracket, the mirror includes two opposite sides, one of the two sides is connected to the mirror motor, the other side is connected to the rotary bracket, and the mirror is rotatable relative to the rotary bracket about the second direction.

Optionally, the mirror assembly further includes a mirror support, the mirror is embedded in the mirror support, the mirror support is connected to the rotating support, the mirror support includes a wall surrounding the mirror, the wall includes a first wall, a second wall opposite to the first wall, and a third wall connected to the first wall and the second wall, the third wall is connected to the rotating support, the first wall is close to the lens with respect to the second wall, the third wall includes a first connection end connected to the rotating support, and the first connection end is close to the first wall with respect to the second wall.

Optionally, the surrounding wall includes a fourth surrounding wall arranged opposite to the first surrounding wall, the fourth surrounding wall includes a second connection end connected to the mirror motor, and the first connection end and the second connection end are located on the same straight line.

Optionally, the camera further comprises a position measuring device and a controller, the position measuring device comprises a fixing portion and a rotating portion, the fixing portion is fixedly arranged on the support, the rotating portion is connected with the reflector, the position measuring device is used for collecting a rotating position signal of the reflector and feeding the rotating position signal back to the controller, and the controller is used for controlling the rotation of the reflector motor according to the rotating position signal.

The application provides a camera's speculum uses the second direction of perpendicular to first direction to be the rotatable setting of axle in the support, and the camera lens subassembly uses the third direction of perpendicular to first direction and second direction to be the rotatable setting in support of axle, lens orientation speculum, and the speculum inclines for the lens, and the speculum is used for reflecting at least part of incident ray to the lens, and the speculum is rotatory can enlarge monitoring range with the rotation of camera lens subassembly, realizes monitoring on a large scale of camera.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

FIG. 1 is a perspective view of a camera in accordance with an exemplary embodiment of the present application;

FIG. 2 is a perspective view of the camera of FIG. 1 from another angle;

FIG. 3 is a perspective view of the camera of FIG. 1 with the mirror assembly at rest and the lens assembly in two extreme positions;

FIG. 4 is a perspective view of the camera of FIG. 1 with the lens assembly at rest and the mirror assembly in two extreme positions;

FIG. 5 is a perspective view of the camera mount of FIG. 1;

FIG. 6 is an exploded perspective view of the lens assembly of the camera of FIG. 1;

FIG. 7 is a perspective view of the lens assembly of the camera of FIG. 1;

FIG. 8 is an exploded perspective view of the worm gear of the camera of FIG. 1;

FIG. 9 is an exploded perspective view of the mirror assembly of the camera of FIG. 1;

fig. 10 is a perspective view of the mirror assembly of the camera of fig. 1.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

FIG. 1 is a perspective view of a camera 100 according to an exemplary embodiment of the present application; fig. 2 is a perspective view of the camera 100 shown in fig. 1 from another angle.

Referring to fig. 1, the present application provides a camera 100 comprising a mount 10, a lens assembly 11 and a mirror assembly 12. The mount 10 serves as a support structure for holding the lens assembly 11, the mirror assembly 12, etc., and the camera 100 may be mounted to an external structure via the mount 10. The bracket 10 includes a base 79 and a first bracket 80 and a second bracket 81 disposed on both sides of the base 79 along the first direction 18, the first direction 18 is parallel to the base 79, the first bracket 80 is used for fixing the mirror assembly 12, the second bracket 81 is used for fixing the lens assembly 11, and the mirror assembly 12 and the lens assembly 11 are arranged on the bracket 10 along the first direction 18 and are rotatably disposed on the bracket 10. The support 10 has a second direction 19, the second direction 19 being defined perpendicular to the base 79 and perpendicular to the first direction 18. The lens assembly 11 includes a lens 13 for shooting and monitoring, the lens 13 may be a telephoto lens, a standard lens, or the like, the telephoto lens refers to a photographic lens with a longer focal length than the standard lens, and is generally used for shooting and monitoring a long-distance scene, the shot scene space range is smaller, and the monitoring angle range is smaller. In some embodiments, the lens 13 includes a lens barrel (not shown) for fixing, a protective shell 78 disposed on an outer surface of the lens barrel for preventing the lens 13 from being damaged, a front end 14 of the lens 13 and a rear end 15 of the lens 13 disposed opposite to each other, and a lens 16 disposed at the front end 14 of the lens 13.

The reflector assembly 12 includes a reflector 17, the reflector 17 may be in an elliptical shape, a rectangular shape, or the like, or may be a concave mirror, a convex mirror, a plane mirror, or the like, and may be selected according to requirements such as a distance from the lens 16 disposed at the front end 14 of the lens 13 to the reflector 17, a rotation angle set by the lens assembly 11 and the reflector assembly 12, and the like, which is not limited in the present application. In the present embodiment, the mirror 17 is an imaging mirror 16: the rectangular plane mirror of 9 can match with the actual angle of view of the lens 13, and the structural design can be more compact.

In some embodiments, the mirror assembly 12 is rotatably disposed on the frame 10 about a second direction 19 perpendicular to the first direction 18, and the lens assembly 11 is rotatably disposed on the frame 10. In some embodiments, the lens assembly 11 may be rotatably disposed on the frame 10 about the second direction 19. In other embodiments, the lens assembly 11 may be rotatably disposed on the frame 10 with a third direction 20 perpendicular to the first direction 18 and the second direction 19 as an axis. In the present embodiment, the mirror assembly 12 is disposed on the first bracket 80, the lens assembly 11 is disposed on the second bracket 81, that is, the mirror assembly 12 is rotatably disposed on the first bracket 80 with a first axis (not shown) parallel to the second direction 19 as an axis, the lens assembly 11 is rotated in a pitching manner with respect to the base 79, and the second bracket 81 is rotatably disposed on the base 79 with the second direction 19 as an axis, so that the lens assembly 11 can rotate horizontally with respect to the base 79 with the second direction 19 as an axis.

Namely, at least the following cases are included: the mirror component 12 does not rotate, and the lens component 11 does pitching motion or horizontal rotation relative to the bracket 10; the reflector component 12 rotates horizontally relative to the bracket 10, and the lens component 11 does not rotate; the mirror component 12 rotates horizontally relative to the bracket 10, and the lens component 11 moves in a pitching manner or rotates horizontally relative to the bracket 10; the mirror assembly 12 rotates vertically with respect to the stand 10, and the lens assembly 11 tilts or rotates horizontally with respect to the stand 10. The rotation angle of the mirror assembly 12 and the rotation angle of the lens assembly 11 can be determined according to actual requirements. The mirror 16 faces the mirror 17, the lens 13 is used for receiving the light reflected by the mirror assembly 12, the mirror 17 is inclined relative to the mirror 16, and the mirror 17 is used for reflecting at least part of the incident light to the mirror 16, so that the wide-range monitoring of the lens 13 is realized through reflection imaging. The field of view area of the camera 100 is determined by the reflection area of the mirror assembly 12, that is, the field of view area of the camera 100 can be adjusted by adjusting the rotation angles of the lens assembly 11 and the mirror assembly 12, and the wide-range monitoring of the camera 100 can be realized by adjusting the field of view area of the camera 100.

By adopting the scheme that the reflector 17 is rotatably arranged on the bracket 10 by taking the second direction 19 as an axis, and the lens assembly 11 is rotatably arranged on the bracket 10, the monitoring range can be enlarged, and the large-range monitoring of the camera 100 can be realized. In some cases, when the lens 13 is a telephoto lens, the purpose of long-distance and wide-range monitoring of the camera 100 can be achieved.

Fig. 3 is a perspective view of the camera 100 shown in fig. 1 with the mirror assembly 12 at rest and the lens assembly 11 in two extreme positions; fig. 4 is a perspective view of the camera 100 shown in fig. 1 with the lens assembly 11 at rest and the mirror assembly 12 in two extreme positions.

Referring to fig. 1 and 3, the lens 13 includes an optical axis, and the optical axis stated herein may be regarded as a central axis of the lens 13, and when the lens assembly 11 is tilted to a first angle, the optical axis intersects with the mirror assembly 12 at a first position; when the lens assembly 11 is tilted to a second angle, the optical axis intersects the mirror assembly 12 at a second position. When the lens assembly 11 is at the two extreme positions, the tilting angles of the lens assembly 11 are respectively the maximum elevation angle and the maximum depression angle, the first angle may be the maximum elevation angle, the maximum depression angle or any one of the maximum elevation angle and the maximum depression angle, and the second angle is the same. Wherein, the movement track of the lens component 11 is determined by the first position and the second position, and the movement track can be regarded as a connecting line set of the intersection point of the optical axis and the reflector component 12 when the lens component 11 rotates in a pitching way. Neither the first position nor the second position is the center of the mirror assembly 12 and the motion trajectory is offset from the center of the mirror assembly 12. In some embodiments, a line connecting the first position and the second position is parallel to the first axis, and deviates from the first axis in a direction perpendicular to the first axis in the plane of the reflector 17, i.e. at this time, the reflector assembly 12 does not rotate, and the lens assembly 11 makes a stable pitching rotation relative to the base 79, so that a partial area of the reflector 17 for reflecting light to the lens assembly 11 exceeds half of the area of the reflector 17, so that the reflected light can enter the lens 13 through the reflector 17 more easily, and the whole structure is more compact while the range of the field area of the camera 100 is set.

Referring to fig. 1 and 4, when the mirror assembly 12 is at two extreme positions, the angle of horizontal rotation of the mirror assembly 12 about the first axis relative to the base 79 is the maximum clockwise rotation angle and the maximum counterclockwise rotation angle, when the mirror assembly 12 rotates to the maximum clockwise rotation angle and the maximum counterclockwise rotation angle, the point where the optical axis intersects with the mirror assembly 12 is located in the mirror surface of the mirror 17, and the shooting range of the lens 13 completely falls in the mirror surface of the mirror 17, so that all incident light rays can enter the lens 13 through the mirror assembly 12, and the phenomenon of incomplete shooting picture is prevented.

Referring to fig. 3 and 4, the lens assembly 11 of the present application makes a pitching motion relative to the frame 10, and the range of the motion angle is +10 ° to-10 °; the movement of the mirror assembly 12 and the lens assembly 11 will be described by taking an example in which the mirror assembly 12 is horizontally rotated with respect to the holder 10 by a rotation angle ranging from +15 ° to-15 °.

Referring to fig. 3, when the mirror assembly 12 is stationary with respect to the stand 10 and the lens assembly 11 moves with respect to the stand 10 by an angle ranging from +10 ° to-10 °, the monitoring position is changed up and down, so that the monitoring range in the vertical direction can be expanded. Referring to fig. 4, when the lens assembly 11 is stationary with respect to the holder 10 and the mirror assembly 12 is rotated with respect to the holder 10 by an angle of rotation of +15 ° to-15 °, the monitoring position is changed left and right, and the horizontal monitoring range can be expanded, and the angle of rotation of the mirror 17 can be calculated to be 15+15 — 30 °, and the monitoring range can be expanded to 30 × 2 — 60 °. When the lens 13 is a telephoto lens, the horizontal angle of the telephoto lens is 15 ° to 30 °, and the monitoring range of the camera 100 is 75 ° to 90 °, which can meet the monitoring requirement under most conditions, and is equivalent to wide-angle monitoring, i.e., long-distance and large-range monitoring of the camera 100 can be achieved.

Fig. 5 is a perspective view of the stand 10 of the camera 100 shown in fig. 1.

Referring to fig. 1 and 5, in some embodiments, the first bracket 80 is disposed to protrude from the base 79 in the second direction 19, the arrangement is such that the mirror assembly 12 can determine the corresponding arrangement position according to the arrangement height of the lens assembly 11, the first bracket 80 includes a plane portion 82 and a connecting wall 83 connected between the plane portion 82 and the base portion 79, the connecting wall 83 can be arranged perpendicular to the base portion 79, or can be arranged obliquely relative to the base portion 79, the application is not limited, the distance between the plane portion 82 and the base portion 79 depends on the angle range of the tilting rotation of the lens assembly 11 and the distance between the optical axis and the base portion 79 when the lens assembly 11 is arranged horizontally relative to the base portion 79, so that the mirror 17 can reflect at least part of the incident light to the lens 13, and the effect of adjusting the field of view area of the camera 100 by adjusting the rotation angles of the lens assembly 11 and the mirror assembly 12 is achieved. In the present embodiment, the distance between the flat surface portion 82 and the base portion 79 is defined as: when the lens assembly 11 tilts and rotates to the maximum depression angle and the maximum elevation angle, the point where the optical axis intersects with the reflector assembly 12 is located in the mirror surface of the reflector 17, and the shooting range of the lens 13 completely falls in the mirror surface of the reflector 17, so that all incident light rays in the field angle range of the lens 13 can enter the lens 13 through the reflector assembly 12, and the occurrence of incomplete display pictures is prevented.

Fig. 6 is an exploded perspective view of the lens assembly 11 of the camera 100 shown in fig. 1; fig. 7 is a perspective view of the lens assembly 11 of the camera 100 shown in fig. 1.

Referring to fig. 1, 5-7, in some embodiments, the bracket 10 is provided with an arc-shaped slot 39 (shown in fig. 1 and 5) engaged with the protrusion 38, the second bracket 81 includes a wall 86 extending along the second direction 19, the wall 86 is provided with an arc-shaped slot 39, the lens assembly 11 is provided with a protrusion 38 engaged with the arc-shaped slot 39, a center of the arc-shaped slot 39 is disposed near one side of the mirror assembly 12, such that the arc-shaped slot 39 is bent away from the first bracket 80, the protrusion 38 is slidably disposed along the arc-shaped slot 39 in the arc-shaped slot 39, and a friction force between the protrusion 38 and the arc-shaped slot 39 provides a supporting force for the lens assembly 11 to a certain extent, such that the lens assembly 11 can be balanced in the third direction 20, and the stability of the lens assembly 11 during rotation is ensured. In this embodiment, the frame 10 is provided with scale marks 40 at intervals along the edge of the arc-shaped slot 39 (see fig. 1), and the current position of the lens assembly 11 can be observed by naked eyes by setting the scale marks 40, so as to ensure the accuracy of the operation of the lens assembly 11.

In some embodiments, arcuate slot 39 includes a first end 84 and a second end 85, with first end 84 defining a maximum elevation angle of lens assembly 11 and second end 85 defining a maximum depression angle of lens assembly 11 to limit the tilt angle of lens assembly 11. The lens assembly 11 rotates along the arc-shaped slot 39 in a pitching manner, and the lens assembly 11 and the reflector assembly 12 are defined as follows: during the movement of the lens assembly 11 from the first end 84 to the second end 85, the points where the optical axis intersects the mirror assembly 12 are both located within the mirror surface of the reflector 17, and the maximum elevation angle and the maximum depression angle of the lens assembly 11 are defined by the positions of the first end 84 and the second end 85 of the arc-shaped groove 39 on the second bracket 81, so that all incident light rays in the field angle range of the lens 13 can enter the lens 13 through the mirror assembly 12.

In some embodiments, during the movement of the lens assembly 11 from the first end 84 to the second end 85, the reflecting mirror 17 is divided into two parts by a line segment formed by a point where the optical axis intersects with the reflecting mirror 17, that is, the moving track of the lens assembly 11 divides the reflecting mirror 17 into two parts, wherein the area of the part for reflecting light to the lens assembly 11 is larger than half of the area of the reflecting mirror 17, so that the reflected light can enter the lens 13 through the reflecting mirror 17 more easily.

In some embodiments, the second bracket 81 includes a first portion 87 and a second portion 88 oppositely disposed along a third direction 20 perpendicular to the first direction 18 and the second direction 19, the first portion 87 and the second portion 88 can be disposed oppositely or alternatively disposed in the first direction 18, the first portion 87 includes a wall 86, the arc-shaped slot 39 is disposed on the first portion 87, and the lens assembly 11 is disposed between the first portion 87 and the second portion 88 along the third direction 20 and can tilt relative to the base 79 about the axis of the third direction 20, so that the lens assembly 11 is more balanced in the third direction 20 and the stability of the lens assembly 11 during rotation can be ensured.

In some embodiments, the lens assembly 11 includes a lens holder 21, the lens 13 is fixedly disposed on the lens holder 21, the lens holder 21 is used for supporting and fixing the lens 13, the lens holder 21 includes a first side surface 22 and a second side surface 23 oppositely disposed along a third direction 20, the first side surface 22 is disposed near the second portion 88, the second side surface 23 is disposed near the first portion 87, the second side surface 23 is disposed with a protrusion 38, the arc-shaped groove 39 is disposed at the first portion 87, a rotating shaft 24 is fixedly disposed on the first side surface 22, the rotating shaft 24 penetrates through the holder 10 and can rotate relative to the holder 10, the rotating shaft 24 penetrates through the second portion 88, and the rotating shaft 24 is configured to support the lens assembly 11 and limit displacement of the lens assembly 11 in the first direction 18, the second direction 19 and the third direction 20, so as to ensure reliability of rotation of the lens assembly 11. In some embodiments, the bracket 10 is provided with a mounting hole 25 (see fig. 1 or fig. 5) which is matched with the rotating shaft 24, the rotating shaft 24 extends into the mounting hole 25, and a rotating shaft bearing 26 (see fig. 1) is arranged between the rotating shaft 24 and the mounting hole 25, so that the lens assembly 11 can rotate relative to the bracket 10, the arrangement can reduce the transmission resistance between the rotating shaft 24 and the mounting hole 25, and can ensure the movement precision of the rotating movement of the lens assembly 11. In the present embodiment, the mounting hole 25 is disposed facing the mirror assembly 12 in the third direction 20, which makes the entire structure of the video camera 100 more compact and smaller.

In some embodiments, the fixing device further includes a clamping block 27 (see fig. 1) fixedly disposed on the bracket 10, the fixing manner may be bolt fixing, the clamping block 27 at least partially covers the rotating shaft bearing 26 along the third direction 20, and the first side surface 22 and the clamping block 27 may be closely disposed on both sides of the rotating shaft bearing 26 along the third direction 20, so as to prevent the position of the rotating shaft bearing 26 in the mounting hole 25 from changing, and ensure the reliability of the installation of the rotating shaft bearing 26.

In some embodiments, the lens holder 21 includes a mounting groove 28 for receiving the lens 13, the mounting groove 28 includes an opening 29, a bottom 30 disposed opposite the opening 29, and a sidewall 31 connected to the bottom 30, the sidewall 31 includes a first sidewall 32 and a second sidewall 33 disposed opposite each other, and a third sidewall 34 connecting the first sidewall 32 and the second sidewall 33. In the present embodiment, the third sidewall 34 is provided with an arc-shaped recess 35, and the arc of the recess 35 is consistent with the arc of the outer surface of the front end 14 of the lens 13, so that the lens 13 can be better fixedly accommodated in the lens holder 21. The lens holder 21 further includes a mounting wall 36 extending from an end of the first sidewall 32 or the third sidewall 34 close to the first sidewall 32, that is, the mounting wall 36 may be formed by extending from the first sidewall 32 along the first direction 18, or may be formed by extending from the third sidewall 34 along the first direction 18. In some embodiments, the lens holder 21 is provided with a rib 37 connected to the mounting wall 36 and the third side, so as to increase the strength of the joint surface between the mounting wall 36 and the third side and prevent the mounting wall 36 from being deformed and damaged by force. The rotation shafts 24 are provided on the mounting wall 36, and in the present embodiment, the number of the rotation shafts 24 is one, and the first side wall 32 is the side wall 31 provided away from the side where the subject is photographed by the camera 100, so that the mounting wall 36 can be prevented from blocking incident light.

In some embodiments, the lens assembly 11 includes a lens holder plate 41, the lens holder 21 is connected to the lens holder plate 41, the lens 13 is sandwiched between the lens holder plate 41 and the lens holder 21, a protective shell 78 for tightly attaching the lens fixing plate 41 and the lens holder 21 to the outside of the lens 13, a lens 13 is fixed on the lens holder 21, the lens holder 21 is connected with the holder 10, the lens fixing plate 41 includes an abutting portion 42 and a connecting portion 43 connected with the abutting portion 42, the abutting portion 42 includes an abutting surface 44 abutting against one side of the lens 13 opposite to the lens holder 21 and a connecting surface 45 connecting the abutting surface 44 and the connecting portion 43, the connecting surface 45 is inclined from the abutting surface 44 to the connecting portion 43 toward the lens 13, the connecting portion 43 is fixedly connected with the lens holder 21, the arrangement can better limit the movement of the lens 13 in the third direction 20, so that the fixing effect of the lens 13 is better.

Fig. 8 is an exploded perspective view of worm gear 46 and worm 47 of camera 100 shown in fig. 1.

Referring to fig. 2, 5 and 8, in some embodiments, the lens module includes a worm wheel 46 and a worm 47, which are engaged with each other, the worm 47 is disposed along the second direction 19 and is rotatably disposed on the bracket 10 with the second direction 19 as an axis, that is, the worm 47 is rotatably disposed on the second bracket 81 with the second direction 19 as an axis, so that the worm wheel 46 is driven by the worm 47 to perform movement, the worm wheel 46 is fixedly connected to the lens module 11 and is engaged with the worm 47, the worm 47 is engaged with the worm wheel 46 to rotate the lens module 11 with the third direction 20 as an axis relative to the bracket 10, that is, relative to the second bracket 81, the worm wheel 46 is fixedly connected to the lens module 11 to perform the rotation of the lens module 11 with the third direction 20 as an axis relative to the bracket 10, the rotation of the lens module 11 is performed by the worm wheel 46 being engaged with the worm 47, so that the lens module 11 is prevented from rotating under the self-gravity, the weight of the lens 13 is balanced to provide a self-locking force for the lens assembly 11, thereby ensuring the stability of the monitoring position and the viewing angle. In this embodiment, the camera 100 further comprises a worm motor 48 and a worm support 49, the worm 47 comprises two opposite ends arranged along the second direction 19, one end of the worm 47 is connected to the worm motor 48, the other end of the worm 47 is connected to the worm support 49, and a first worm bearing 50 is arranged between the worm support 49 and the worm 47 to realize the rotation of the worm 47 relative to the support 10.

In some embodiments, the worm motor 48 is disposed on a side of the second bracket 81 close to the base 79, the worm 47 is disposed on a side of the second bracket 81 away from the base 79, that is, the worm 47 is disposed on an outer side of the second bracket 81, the worm motor 48 includes a second rotating shaft 90 disposed on the worm motor 48, the second rotating shaft 90 is disposed on a side of the second bracket 81 close to the base 79, that is, the worm motor 48 is disposed on an inner side of the second bracket 81, and the second rotating shaft 90 passes through the second bracket 81 and is connected to the worm 47, and the worm motor 48 is configured to drive the lens assembly 11 to rotate relative to the second bracket 81 about the third direction 20 to implement the pitching motion of the lens assembly 11 relative to the base 79.

Referring to fig. 5, in some embodiments, the bracket 10 includes a main body 73, a supporting portion 74 protruding from the main body 73, and a mounting portion 75 protruding from the supporting portion 74, the supporting portion 74 protruding from the main body 73 and providing a sufficient space for the movement of the worm wheel, the mounting portion 75 is provided with a hole 76 communicating the bracket inner side 57 and the bracket outer side 56, and the worm 47 is inserted into the mounting portion 75 through the hole 76, so as to better limit the displacement of the worm 47 in the first direction 18 and the third direction 20. In the present embodiment, a second worm bearing 77 is disposed between the worm 47 and the hole 76 to better limit the position of the worm 47 and ensure the stability of the movement of the lens assembly 11.

In this embodiment, the worm wheel 46 includes a worm wheel body 51 and a connecting block 52 fixedly connected to the worm wheel body 51, the worm wheel teeth 53 are disposed on the worm wheel body 51 and are uniformly arranged along the circumferential direction of the worm wheel body 51, the connecting block 52 is fixedly connected to the lens support 21, the worm wheel body 51 may be in a shape of a sector, a semicircle, a circle, or the like, and cooperates with the worm 47 to implement the pitching motion of the lens assembly 11 relative to the support 10. In the present embodiment, the turbine body is disposed at the upper end of the connecting block 52, which can provide a space for the movement of the turbine and lens assembly 11.

In some embodiments, the device further comprises a sensor (not shown) and a controller (not shown), wherein the sensor may be a position sensor such as a photoelectric sensor, the sensor is fixedly arranged on the bracket 10 and is used for acquiring a position signal of the lens 13 and feeding the position signal back to the controller, the controller controls the stop and the start of the worm motor 48 according to the position signal, and the sensor is arranged to judge whether the lens assembly 11 reaches an extreme position, so as to prevent the lens 13 from colliding with the bracket 10 to damage the lens 13.

Fig. 9 illustrates an exploded perspective view of the mirror assembly 12 of the camera 100 shown in fig. 1; fig. 10 is a perspective view of the mirror assembly 12 of the camera 100 shown in fig. 1.

Referring to fig. 1, 9 and 10, in some embodiments, the mirror assembly 12 includes a mirror motor 54 and a rotating bracket 55 fixedly disposed on the bracket 10, the mirror 17 includes two opposite sides, one of the sides is connected to the mirror motor 54, the other side is connected to the rotating bracket 55, the mirror 17 can be constrained from moving in the second direction 19, the accuracy of the monitoring range is ensured, the mirror 17 can rotate around the second direction 19 relative to the rotating bracket 55, the rotating bracket 55 can limit the rotation angle of the mirror 17, and the fixing position and the fixing angle of the rotating bracket 55 on the bracket 10 determine the initial monitoring position of the camera 100 in the horizontal direction. In some embodiments, the camera 100 includes a blocking member (not shown) removably disposed on the plane of the stand 10 on which the mirror assembly 12 is disposed, the blocking member being disposed at an extreme set angle position of the mirror 17 for blocking rotational movement of the mirror 17 about the second direction 19 to prevent the rotational angle of the mirror 17 from exceeding the set angle.

In some embodiments, the planar portion 82 is provided with a through hole 91 penetrating through the planar portion 82 along the second direction 19, the mirror assembly 12 is disposed on a side of the planar portion 82 away from the base 79, i.e., on an outer side of the first bracket 80, the mirror motor 54 includes a first rotating shaft 89 disposed at one end of the mirror motor 54, the first rotating shaft 89 passes through the through hole 91 to be connected to the mirror assembly 12, and the mirror motor 54 is used for driving the mirror assembly 12 to rotate. The mirror motor 54 is disposed on a side of the plane portion 82 close to the base portion 79, that is, on an inner side of the first bracket 80, which can protect the mirror motor 54, and since the first bracket 80 is disposed to protrude from the base portion 79 along the second direction 19, the mirror motor 54 is disposed on a side of the plane portion 82 far from the base portion 79, which can improve the space utilization of the video camera 100.

In some embodiments, the mirror assembly 12 further includes a mirror holder 58, the mirror 17 is embedded in the mirror holder 58, the mirror holder 58 is connected to the rotating holder 55, the mirror holder 58 includes a wall 59 disposed around the mirror 17, the wall 59 is used for limiting the position of the mirror 17 and protecting the mirror 17, the wall 59 includes a first wall 60, a second wall 61 disposed opposite to the first wall 60, a third wall 62 connected to the first wall 60 and the second wall 61, the third wall 62 is connected to the rotating holder 55, the first wall 60 is disposed near the lens 16 relative to the second wall 61, the third wall 62 includes a first connecting end 63 connected to the rotating holder 55, the first connecting end 63 is disposed near the first wall 60 relative to the second wall 61, and the arrangement is such that the overall structure design is more compact.

In some embodiments, the wall 59 includes a fourth wall 64 opposite the first wall 60, the fourth wall 64 includes a second connection end 65 connected to the mirror motor, and the first connection end 63 and the second connection end 65 are located on the same straight line to facilitate the rotation of the mirror 17 about the second direction 19, so that the mirror 17 can rotate more smoothly.

In this embodiment, the first surrounding wall 60 is provided with a first rotating structure 66 protruding from the first connecting end 63 along the second direction 19, the second surrounding wall 61 is provided with a second rotating structure 67 protruding from the second connecting end 65 along the second direction 19, a mirror bearing 68 is provided between the first rotating structure 66 and the rotating bracket 55, so as to ensure the precision of the rotating motion of the mirror 17, the second rotating structure 67 is connected with the mirror motor 54, and the connection mode may be pin shaft fit, so that the second rotating structure 67 and the mirror motor 54 are more reliably fixed.

In some embodiments, the camera 100 further includes a position measuring device 69, the position measuring device 69 includes a fixing portion 70 and a rotating portion 71, the fixing portion 70 is fixedly disposed on the bracket 10, the rotating portion 71 is connected to the reflector 17, the position measuring device 69 is configured to collect a rotation position signal of the reflector 17 and feed the rotation position signal back to the controller, and the controller controls the rotation of the reflector motor 54 according to the rotation position signal, so as to detect the rotation position of the reflector 17 in real time, and make the rotation angle of the reflector 17 more accurate. In this embodiment, the position measuring device 69 is a magnetic encoder 72, which can accurately feed back the moving position of the mirror 17 to the controller.

The present application provides a camera 100 comprising a mirror assembly 12; a lens assembly 11, the lens assembly 11 including a lens 13; and a support 10 including a base 79 and a first support 80 and a second support 81 disposed on opposite sides of the base 79 along a first direction 18, the first direction 18 being parallel to the base 79, the support 10 having a second direction 19, the second direction 19 being defined perpendicular to the base 79 and perpendicular to the first direction 18, the mirror assembly 12 being rotatably disposed on the first support 80 about a first axis parallel to the second direction 19, the lens assembly 11 being disposed on the second support 81, the lens assembly 11 being tiltable relative to the base 79;

the lens 13 is used for receiving the light reflected by the reflector assembly 12, the field of view area of the camera 100 is determined by the reflection area of the reflector assembly 12, the lens 13 comprises an optical axis, and the optical axis intersects with the reflector assembly 12 at a first position when the lens assembly 11 is tilted to a first angle;

when the lens component 11 is tilted to a second angle, the optical axis intersects with the mirror component 12 at a second position;

wherein, the movement track of the lens component 11 is determined by the first position and the second position, neither of the first position and the second position is the center of the reflector component 12, and the movement track deviates from the center of the reflector component 12.

In some embodiments, the mirror assembly 12 comprises a mirror 17, a line connecting the first position and the second position being parallel to the first axis and offset from the first axis in a direction perpendicular to the first axis in the plane of the mirror 17, such that the portion of the mirror 17 that is used to reflect light to the lens assembly 11 has more than half the area of the mirror 17.

In some embodiments, the first bracket 80 is disposed to protrude from the base 79 along the second direction 19, the first bracket 80 includes a flat portion 82 and a connecting wall 83 connected between the flat portion 82 and the base 79, and a distance between the flat portion 82 and the base 79 depends on an angular range of the lens assembly 11 in pitch and rotation and a distance between the optical axis and the base 79 when the lens assembly 11 is disposed horizontally with respect to the base 79.

In some embodiments, the mirror assembly 12 includes a mirror 17, the first bracket 80 is disposed protruding from the base 79 along the second direction 19, the first bracket 80 includes a planar portion 82 and a connecting wall 83 connected between the planar portion 82 and the base 79, a distance between the planar portion 82 and the base 79 is defined as: when the lens assembly 11 is tilted to the maximum depression angle and the maximum elevation angle, the point where the optical axis intersects the mirror assembly 12 is located within the mirror surface of the mirror 17.

In some embodiments, the planar portion 82 is provided with a through hole 91 extending through the planar portion 82 in the second direction 19, and the mirror assembly 12 is disposed on a side of the planar portion 82 away from the base portion 79;

the camera 100 further includes a mirror motor 54, the mirror motor 54 is disposed on a side of the planar portion 82 close to the base portion 79, the mirror motor 54 includes a first rotating shaft 89 disposed at one end of the mirror motor 54, the first rotating shaft 89 passes through the through hole 91 and is connected to the mirror assembly 12, and the mirror motor 54 is configured to drive the mirror assembly 12 to rotate.

In some embodiments, the second bracket 81 includes a wall 86 extending along the second direction 19, the wall 86 defines an arcuate slot 39, a center of the arcuate slot 39 is disposed near a side of the mirror assembly 12, the arcuate slot 39 includes a first end 84 and a second end 85, the first end 84 defines a maximum elevation angle of the lens assembly 11, and the second end 85 defines a maximum depression angle of the lens assembly 11.

In some embodiments, the mirror assembly 12 includes a mirror 17, the lens assembly 11 tilts along the arcuate slot 39, and the lens assembly 11 and the mirror assembly 12 define: during the movement of the lens assembly 11 from the first end 84 to the second end 85, the intersection point of the optical axis and the mirror assembly 12 is located within the mirror surface of the mirror 17.

In some embodiments, during the movement of the lens assembly 11 from the first end 84 to the second end 85, a line segment formed by a point where the optical axis intersects with the reflector 17 divides the reflector 17 into two parts, wherein an area of the part for reflecting light to the lens assembly 11 is larger than half of an area of the reflector 17.

In some embodiments, the second bracket 81 includes a first portion 87 and a second portion 88 oppositely disposed along a third direction 20 perpendicular to the first direction 18 and the second direction 19, the first portion 87 includes the wall 86, and the lens assembly 11 is disposed between the first portion 87 and the second portion 88 along the third direction 20, and is tilted relative to the base 79 about the third direction 20.

In some embodiments, the lens module includes a worm wheel 46 and a worm 47, the worm 47 is rotatably disposed on the second bracket 81 with the second direction 19 as an axis, the worm wheel 46 is fixedly connected to the lens module 11 and is engaged with the worm 47, and the worm 47 and the worm wheel 46 cooperate to rotate the lens module 11 with respect to the second bracket 81 with the third direction 20 as an axis.

In some embodiments, a worm 47 motor is included, the worm 47 motor is disposed on a side of the second bracket 81 close to the base 79, the worm 47 is disposed on a side of the second bracket 81 far from the base 79, the worm 47 motor includes a second rotating shaft 90 disposed on the worm 47 motor, the second rotating shaft 90 is disposed on a side of the second bracket 81 close to the base 79, the second rotating shaft 90 passes through the second bracket 81 to be connected to the worm 47, and the worm 47 motor is configured to drive the lens assembly 11 to rotate relative to the second bracket 81 with the third direction 20 as an axis.

In some embodiments, the second bracket 81 is rotatably disposed on the base 79 about the second direction 19.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims

1. A camera, comprising:

a support;

2. The camera of claim 1, wherein the lens assembly is rotatably disposed to the holder about an axis in a third direction perpendicular to the first direction and the second direction.

3. The camera of claim 2, comprising a worm gear and a worm that are engaged with each other, the worm being disposed along the second direction and rotatably disposed on the bracket about the second direction, the worm gear being fixedly connected to the lens assembly and being engaged with the worm, the worm being engaged with the worm gear to rotate the lens assembly relative to the bracket about the third direction.

4. The camera of claim 3, wherein the bracket includes a main body portion, a supporting portion protruding from the main body portion, and an installation portion protruding from the supporting portion, the installation portion having a hole communicating the inside and the outside of the bracket, the worm being inserted into the installation portion through the hole.

5. The camera of claim 2, wherein the lens assembly comprises a lens holder, the lens is fixedly disposed on the lens holder, the lens holder comprises a first side and a second side opposite to each other along the third direction, and a rotation shaft is fixedly disposed on the first side, and the rotation shaft passes through the holder and can rotate relative to the holder.

6. The camera of claim 5, wherein the lens holder includes a mounting slot for receiving the lens, the mounting slot includes an opening, a bottom end disposed opposite to the opening, and a sidewall connected to the bottom end, the sidewall includes a first sidewall and a second sidewall disposed opposite to each other, and a third sidewall connecting the first sidewall and the second sidewall, the lens holder further includes a mounting wall extending from one end of the first sidewall or the third sidewall near the first sidewall, and the rotation shaft is disposed on the mounting wall; and/or

7. The camera of claim 1, wherein the lens assembly is rotatably disposed to the bracket about the second direction.

8. The camera of claim 7, wherein the bracket comprises a base and first and second brackets disposed on the base, the mirror assembly being disposed on the first bracket, the lens assembly being disposed on the second bracket, the second bracket being rotatably disposed on the base about the second axis.

9. The camera according to claim 1, wherein the lens assembly includes a lens fixing plate and a lens holder connected to the lens fixing plate, the lens is clamped between the lens fixing plate and the lens holder, the lens holder is connected to the holder, the lens fixing plate includes an abutting portion and a connecting portion connected to the abutting portion, the abutting portion includes an abutting surface abutting against a side of the lens facing away from the lens holder and a connecting surface connecting the abutting surface and the connecting portion, the connecting surface is inclined from the abutting surface to the connecting portion in a direction close to the lens, and the connecting portion is fixedly connected to the lens holder.

10. The camera of claim 1, wherein the mirror assembly includes a mirror motor and a rotatable mount fixedly mounted to the mount, the mirror including two oppositely disposed sides, one of the sides being connected to the mirror motor and the other side being connected to the rotatable mount, the mirror being rotatable relative to the rotatable mount about the second axis.

11. The camera of claim 10, wherein the mirror assembly further comprises a mirror support, the mirror being embedded in the mirror support, the mirror support being coupled to the rotational support, the mirror support comprising a wall disposed around the mirror, the wall comprising a first wall, a second wall disposed opposite the first wall, a third wall coupled to the first wall and the second wall, the third wall being coupled to the rotational support, the first wall being disposed adjacent to the lens relative to the second wall, the third wall comprising a first coupling end coupled to the rotational support, the first coupling end being disposed adjacent to the first wall relative to the second wall.

12. The camera of claim 11, wherein the wall includes a fourth wall disposed opposite the first wall, the fourth wall including a second connection end connected to the mirror motor, the first connection end and the second connection end being in a common line.

13. The camera of claim 10, further comprising a position measuring device and a controller, wherein the position measuring device comprises a fixing portion and a rotating portion, the fixing portion is fixedly disposed on the bracket, the rotating portion is connected to the reflector, the position measuring device is configured to collect a rotation position signal of the reflector and feed the rotation position signal back to the controller, and the controller is configured to control rotation of the reflector motor according to the rotation position signal.