CN216531525U

CN216531525U - Camera

Info

Publication number: CN216531525U
Application number: CN202123369666.9U
Authority: CN
Inventors: 袁永达; 王建; 曹慧强; 蔡斌
Original assignee: Zhejiang Dahua Technology Co Ltd
Current assignee: Zhejiang Dahua Technology Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-05-13
Anticipated expiration: 2031-12-28

Abstract

The utility model relates to the field of monitoring equipment, and discloses a camera, which comprises a lens; the shell is detachably connected with the lens and provided with a front cover and a rear cover which are buckled and connected to form an accommodating space; the bracket structure is positioned in the accommodating space and comprises a bracket body, an optical filter assembly and a sensor, wherein the optical filter assembly is arranged on the bracket body in a sliding manner along a first direction, and the sensor is arranged on one side of the bracket body, which is far away from the optical filter assembly; the bracket body is provided with an avoidance groove for exposing the sensor, the optical filter component is provided with at least two different optical filters arranged along a first direction, and the orthographic projection of the optical filters positioned at the working station on the bracket body covers the avoidance groove; the support structure is rotatably arranged on the front cover around the second direction so as to adjust the angle between the plane where the optical filter in the optical filter component is located and the optical axis direction of the lens. The method is used for ensuring the imaging quality of the camera in the daytime and at night.

Description

Camera

Technical Field

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

Background

At present, in the field of intelligent traffic, a traffic camera is mainly used for capturing illegal behaviors of motor vehicles and non-motor vehicles; extraction of pedestrian, motor vehicle, non-motor vehicle structured information, and the like. In order to ensure the accuracy and reliability of monitoring information, the images shot by the monitoring camera are required to clearly reflect the images of the vehicle, the license plate and the face of the driver in the vehicle. With the development of science and technology, people have higher and higher requirements on image quality. Under the night environment with insufficient illumination, the large-aperture lens can capture more light, so that the brightness of a shot image is higher. In an intelligent transportation face mount scene, a large aperture and a large focal length lens are generally used to meet the corresponding use scene. The lens with large aperture and long focal length generally has smaller depth of field, so that the situation of local blurring of the picture can occur, and normal use and customer experience are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a camera, which is used for ensuring the imaging quality of the camera in the daytime and at night.

In order to achieve the purpose, the utility model provides the following technical scheme:

a camera, comprising: a lens;

the shell is detachably connected with the lens and is provided with a front cover and a rear cover, and the front cover and the rear cover are buckled and connected to form an accommodating space;

the support structure is positioned in the accommodating space and comprises a support body, an optical filter assembly and a sensor, the optical filter assembly is slidably arranged on the support body along a first direction, the plane where the first direction is located is perpendicular to the optical axis of the lens, and the sensor is arranged on one side, away from the optical filter assembly, of the support body; the bracket body is provided with an avoidance groove for exposing the sensor, the optical filter component is provided with at least two different optical filters arranged along the first direction, the optical filters are provided with working stations and non-working stations, and the orthographic projection of the optical filters on the working stations on the bracket body covers the avoidance groove;

the support structure is rotatably arranged on the front cover around a second direction, and the second direction is perpendicular to the optical axis direction of the lens so as to adjust the angle between the imaging surface of the sensor and the optical axis direction of the lens.

The lens is detachably connected with the shell, the shell is provided with a front cover and a rear cover, the front cover and the rear cover are buckled and connected to form an accommodating space, the support structure in the accommodating space is rotatably installed on the front cover and comprises a support body and an optical filter assembly, the optical filter assembly is slidably arranged on the support body along a first direction, the plane where the first direction is located is perpendicular to the optical axis direction of the lens, an avoiding groove is formed in the support body, the optical filter assembly is provided with at least two different optical filters which are arranged along the first direction, if the optical filter is in the daytime, one of the optical filters is selected, infrared rays are cut off, reflected rays can be weakened, and imaging quality is improved; if the light intensity is at night, another optical filter is selected, the light intensity is increased, and the imaging quality is improved; because the optical filter has a working station and a non-working station, when the optical filter is positioned at the working station, the projection of the optical filter on the bracket body covers the avoiding groove, and according to different conditions, the optical filters of different models can be selectively switched, so that the operation is convenient and the imaging quality can be improved. The support structure rotates around the second direction, the second direction is perpendicular to the optical axis direction of the lens, and the included angle between the imaging surface of the sensor and the optical axis is changed by adjusting the support structure, so that the imaging definition is improved.

Optionally, the arrangement direction of the optical filters in the optical filter assembly is the first direction, and the first direction is parallel to the second direction.

Optionally, the camera further comprises a first drive mechanism for driving the optical filter assembly to move in the first direction;

the first driving mechanism is mounted on the bracket body.

Optionally, the first driving mechanism includes a first motor, a screw rod in transmission connection with the first motor, and a sliding block in threaded fit with the screw rod;

the optical filter component comprises an optical filter support and an optical filter arranged on the optical filter support, the optical filter support is provided with a connecting piece, and the connecting piece is connected with the sliding block.

Optionally, the support structure further includes a sliding rod extending along the first direction, the filter support is in sliding fit with the sliding rod, and an orthographic projection of the sliding rod on the filter support is not coincident with the filter.

Optionally, the number of the sliding rods is two, the two sliding rods are arranged in parallel, and the optical filter support is in sliding fit with the two sliding rods.

Optionally, the camera further comprises a second driving mechanism for driving the support structure to rotate;

the second driving mechanism is installed on one side, facing the rear cover, of the front cover.

Optionally, the second driving mechanism comprises a second motor, a gear in transmission connection with the second motor, and a rack engaged with the gear; the gear drives the rack to move along the first direction;

the side of the front cover facing the rear cover is provided with a rack slot for placing the rack;

the rack deviates from one side of the rack groove and is provided with an inclined surface, the inclined surface is abutted to the support structure, and when the rack moves along a first direction, the distance between the front cover and the support structure is changed along with the angle of the inclined surface.

Optionally, a ball groove for placing a ball is arranged in the rack groove, and one side of the rack facing the rack groove is in contact with the ball placed in the ball groove.

Optionally, a protruding point is arranged on one side, facing the front cover, of the bracket body, and the protruding point abuts against the inclined plane.

Optionally, the support structure further includes a rotating shaft disposed on the support body, and the front cover is formed with a rotating groove matched with the rotating shaft.

Drawings

Fig. 1 is a schematic perspective view of a camera according to an embodiment of the present invention;

fig. 2 is an exploded view of a camera according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a bracket structure of a camera according to an embodiment of the present invention after rotating a certain angle;

FIG. 4 is a schematic view of a stent structure according to an embodiment of the present invention;

FIG. 5 is an exploded view of a support structure provided by an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a filter holder according to an embodiment of the present invention;

FIG. 7 is a schematic view of an assembly of a filter holder and a sliding rod according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a front surface of a stent body according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a back surface of a stent body according to an embodiment of the present invention;

fig. 10 is a schematic view of a front cover of a video camera according to an embodiment of the present invention;

fig. 11 is a schematic view of an angle structure of a rack according to an embodiment of the present invention;

FIG. 12 is a schematic view of another angular configuration of a rack according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a camera provided in an embodiment of the present invention, with a rear cover removed.

Icon: 1-a lens; 11-optical axis; 2-a housing; 21-front cover; 211-rack slot; 2111-ball groove; 212-a ball bearing; 213-a rotary groove; 214-spring post; 215-platen support surface; 216-fixed screw holes; 22-rear cover; 221-a first outlet; 222-a second outlet; 3-a scaffold structure; 31-a stent body; 311-avoidance slots; 312-bumps; 313-spring post relief holes; 314-sliding bar slot; 315-optocoupler board mounting slot; 316-first motor mount slot; 317-dispensing a glue surface; 318-spring support surface; 32-a filter assembly; 321-a filter holder; 322-an optical filter; 322 a-a first filter; 322 b-a second filter; 323-connecting member; 3231-a drive groove; 324 a-first switching limiting piece; 324 b-a second switch limiting piece; 325-upper locating plate; 326-lower spacer; 327-extended sheet; 33-a sensor; 34-a sensor plate; 35-a slide bar; 36-a rotating shaft; 37-a first optical coupler plate; 38-a second light coupling plate; 41-a first motor; 42-a screw rod; 43-a slider; 51-a second motor; 52-a rack; 521-a bevel; 522-ball bearing surface; 523-transmission gear; 6-first shading foam; 61-a first threading slot; 7-second shading foam; 71-a second threading slot; 8-pressing a plate; 9-a spring; a-a screw; b-a screw; c-screws; d-screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 3, an embodiment of the present invention provides a camera including: a lens 1;

a housing 2 detachably connected to the lens 1, the housing 2 having a front cover 21 and a rear cover 22, the front cover 21 and the rear cover 22 being snap-coupled to form an accommodating space;

the support structure 3 is located in the accommodating space, wherein the support structure 3 includes a support body 31, a filter assembly 32 and a sensor 33, the filter assembly 32 is slidably disposed on the support body 31 along a first direction, a plane where the first direction is located is perpendicular to the optical axis 11 of the lens 1, and the sensor 33 is mounted on a side of the support body 31 departing from the filter assembly 32; the bracket body 31 is provided with an avoiding groove 311 for exposing the sensor 33, the optical filter assembly 32 is provided with at least two optical filters of different types arranged along a first direction, the optical filters are provided with working stations and non-working stations, and when any one of the at least two optical filters of different types is in a working station, the orthographic projection of the optical filter 322 in the working station on the bracket body 31 covers the avoiding groove 311;

the support structure 3 is rotatably mounted on the front cover 21 around a second direction, which is perpendicular to the optical axis 11 direction of the lens 1, so as to adjust the angle between the imaging surface of the sensor 33 and the optical axis 11 direction of the lens 1.

It should be noted that, the lens 1 is detachably connected with the housing 2, the housing 2 has a front cover 21 and a rear cover 22, the front cover 21 and the rear cover 22 are fastened and connected to form an accommodating space, the support structure 3 in the accommodating space is rotatably mounted on the front cover 21, the support structure 3 includes a support body 31 and a filter assembly 32, the filter assembly 32 is slidably disposed on the support body 31 along a first direction, a plane of the first direction is perpendicular to the optical axis 11 direction of the lens 1, the support body 31 has an avoiding groove 311, the filter assembly 32 has at least two filters 322 of different types arranged along the first direction, if the light is in the daytime, one of the filters of the types is selected to cut off infrared light and reduce reflected light, thereby improving imaging quality; if the light intensity is at night, another type of optical filter is selected, the light intensity is increased, and the imaging quality is improved; because the optical filter has a working station and a non-working station, when the optical filter is at the working station, the projection of the optical filter on the bracket body 31 covers the avoiding groove 311, and according to different conditions, the optical filters 322 of different models can be selectively switched, so that the operation is convenient and the imaging quality can be improved. Because the support structure 3 rotates around the second direction, the second direction is perpendicular to the direction of the optical axis 11 of the lens 1, and the included angle between the imaging surface of the sensor 33 and the optical axis 11 is changed by adjusting the support structure 3, the imaging definition is improved, and the camera provided by the utility model can be applied to different scenes through the structure.

In order to ensure the imaging quality of the monitoring camera in the daytime and at night, a switching mechanism for switching optical filters is arranged in the monitoring camera, and a combined optical filter is usually used in the daytime and is used for cutting off infrared light and polarized light formed by light reflection; and a full-transmission filter is adopted at night to ensure the image quality.

With continued reference to fig. 1, the first light-shielding foam 6 and the second light-shielding foam 7 are respectively fixed at corresponding positions of the rear cover 22 by single-sided back glue; the rear cover 22, the first shading foam 6 and the second shading foam 7 mainly play roles in sealing, dust prevention and shading.

Of course, the filter assembly 32 is driven by the first driving mechanism to move in the first direction to effect switching of the filters. The camera further comprises a second driving mechanism for driving the support structure 3 to rotate; the second drive mechanism is mounted on the side of the front cover 21 facing the rear cover 22.

With continued reference to fig. 1 and 2, the rear cover 22 is provided with a first wire outlet 221 and a second wire outlet 222, which are respectively used for a cable passing through the second electrode and a Flexible Printed Circuit board (FPC) cable connected to the sensor board 34, and finally the cable of the second motor 51 passes through the first wire passing groove 61 formed on the first light-shielding foam 6, and the FPC cable connected to the sensor board 34 passes through the second wire passing groove 71 formed on the second light-shielding foam 7.

As shown in fig. 4 and 5, the arrangement direction of the filters in the filter assembly 32 is a first direction, and the first direction is parallel to a second direction, and the camera provided by the embodiment of the present invention further includes a first driving mechanism for driving the filter assembly 32 to move along the first direction;

the first drive mechanism is mounted on the holder body 31. The sensor 33 is mounted on the sensor board 34, and the sensor board 34 is fixed on the dispensing surface 317 of the holder body 31 by dispensing.

Specifically, the first driving mechanism includes a first motor 41, a screw rod 42 in transmission connection with the first motor 41, and a sliding block 43 in threaded fit with the screw rod 42;

the filter assembly 32 includes a filter holder 321 and a filter mounted on the filter holder 321, the filter holder 321 has a connecting member 323, and the connecting member 323 is connected to the sliding block 43.

As shown in fig. 6 and 7, in particular, the support structure 3 further includes a sliding rod 35 extending along the first direction, the filter support 321 is slidably engaged with the sliding rod 35, and an orthogonal projection of the sliding rod 35 on the filter support 321 is not coincident with the filter. The number of the sliding rods 35 is two, the two sliding rods 35 are arranged in parallel, and the filter support 321 is in sliding fit with the two sliding rods 35.

When the filter assembly 32 is specifically assembled, the first filter 322a and the second filter 322b are respectively fixed on the filter holder 321 by dispensing. As shown in fig. 6 and 7, the filter holder 321 has a connecting member 323 in the form of two connecting pieces between which a driving groove 3231 is formed; the filter holder 321 further has two switching limiting pieces and an extending piece 327, and the number of the switching limiting pieces may be two as shown in the figure, or the number of the switching limiting pieces may be selected according to actual needs. An upper positioning piece 325 and a lower positioning piece 326 are provided on the lower side of the filter holder 321 along a direction perpendicular to the arrangement direction of the first filter 322a and the second filter 322b, one of the slide bars 35 is installed between the switching stopper and the extending piece 327, and the other slide bar 35 is installed between the two upper positioning pieces 325 and the two lower positioning pieces 326. The two slide bars 35 are then placed in the four slide bar slots 314 on the bracket, respectively. Of course, the number of the above-described structures is illustrated by way of example in the drawings, and the number is not particularly limited.

Then, the four screws D are screwed to the corresponding screw holes on the bracket body 31, at this time, the four screws D press two ends of the two sliding rods 35 respectively, the two sliding rods 35 are fixed on the bracket body 31 through the four sliding rod grooves 314 on the bracket body 31 and the four screws D, at this time, the optical filter bracket 321 can only move along the axial direction of the sliding rods 35, that is, the optical filter bracket 321 moves along the first direction. Then, the first optical coupler plate 37 and the second optical coupler plate 38 are respectively placed in the two optical coupler plate mounting grooves 315 of the bracket body 31, and are respectively fixed on the bracket body 31 through a screw C. The first motor 41 is placed in the first motor mounting groove 316 on the bracket body 31, the sliding block 43 on the lead screw 42 passes through the transmission groove 3231 on the filter bracket 321, and the first motor 41 is fixed on the bracket body 31 by two screws C, when the first motor 41 rotates, the first motor 41 drives the lead screw 42 to rotate, the lead screw 42 drives the sliding block 43 to move, and the sliding block 43 drives the filter bracket 321 to axially move along the sliding rod 35, so that switching of the filters 322 of different models is completed, and the filters 322 of different models are switched to the avoidance groove 311 of the bracket body 31 according to actual scenes.

When the holder body 31 and the front cover 21 are assembled, as shown in fig. 8 to 10, the holder body 31 is in a state where the filter assembly 32 is not mounted, a ball groove 2111 for placing the balls 212 is provided in the rack groove 211, one side of the rack 52 facing the rack groove 211 is in contact with the balls 212 placed in the ball groove 2111, the balls 212 are respectively placed in the ball grooves 2111 of the front cover 21, the specific number of the ball grooves 2111 is matched with the inclined surface 521 of the rack 52 matched therewith, the number of the balls 212 is also matched with the number of the ball grooves 2111, the number of the ball grooves 2111 is two in the drawing, the rack 52 is then placed in the rack groove 211 provided in the front cover 21, the ball support surface 522 of the rack 52 is in contact with the two balls 212, and the balls 212 mainly function of the balls 212 is to reduce the friction force when the rack 52 moves left and right in the rack groove 211, here, the left-right movement is a movement in a first direction; then, the second motor 51 is fixed to the front cover 21 by two screws a, at this time, a gear (not shown in the figure) provided on the second motor 51 is just engaged with the transmission teeth 523 in the rack 52, and when the second motor 51 rotates, the gear on the second motor 51 drives the rack 52 to move left and right in the rack slot 211, that is, to move in the first direction. When the assembled bracket structure 3 is installed in the front cover 21, the rotating shaft 36 on the bracket body 31 is first placed in the rotating groove 213 formed on the front cover 21 and engaged with the rotating shaft 36, in order to ensure the stability of the bracket body 31 during rotation, the rotating shaft 36 may have two right rotating shaft 36 and left rotating shaft 36, the front cover 21 is provided with a left rotary groove 213 and a right rotary groove 213 which are matched with the left rotary shaft 36 and the right rotary shaft 36, a spring post avoiding hole 313 is arranged on the bracket body 31, the spring post avoiding hole 313 is sleeved in a spring post 214 on the front cover 21, in particular, in order to ensure the stability of the connection, the spring post avoiding hole 313 is provided with a right spring post avoiding hole 313 and a left spring post avoiding hole 313 on the left and right sides of the bracket body 31, the right spring post avoiding hole 313 and the left spring post avoiding hole 313 are respectively sleeved into the two spring posts 214 on the left side and the right side of the front cover 21; then, the two pressing plates 8 are respectively fixed on the two pressing plate supporting surfaces 215 on the left and right sides of the front cover 21 through screws a, at this time, the bracket structure 3 can only rotate around the axes of the rotating shafts 36 on the left and right sides of the bracket body 31 within a certain angle range relative to the front cover 21; then, the two springs 9 are respectively sleeved on the spring posts 214 arranged on the front cover 21, the tops of the two spring posts 214 are respectively screwed with a screw B, at this time, the two springs 9 are in a compressed state, one ends of the two springs are in contact with the spring supporting surface 318 of the bracket, the other ends of the springs 9 are pressed against the screws B, the bracket structure 3 is subjected to downward pressure given by the springs 9, one side of the bracket body 31 facing the front cover 21 is provided with a convex point 312, and the convex point 312 is abutted to the inclined surface 521. At this time, the two salient points 312 disposed on the bracket are respectively contacted with the two inclined planes 521 disposed on the rack 52.

The second driving mechanism comprises a second motor 51, a gear in transmission connection with the second motor 51 and a rack 52 meshed with the gear; the gear drive rack 52 moves in a first direction; the side of the front cover 21 facing the rear cover 22 has a rack slot 211 for placing the rack 52; the side of the rack 52 facing away from the rack slot 211 is provided with a slope 521, the slope 521 abuts against the bracket structure 3, and when the rack 52 moves along the first direction, the distance between the front cover 21 and the bracket structure 3 changes along with the angle of the slope 521.

Referring to fig. 11 and 12 with respect to the specific structure of the rack 52, when the second motor 51 rotates, the rack 52 moves in the rack groove 211 in a first direction, and the bracket structure 3 rotates a certain angle around the two rotating shafts 36 on the bracket body 31 due to the inclined surface 521 on the rack 52. Finally, the lens 1 is fixed on the front end face of the front cover 21 through threads, and the rear cover 22 is fixed on the front cover 21 through a buckle.

As shown in fig. 13, when the support structure 3 provided by the embodiment of the present invention is used specifically: first, four screws are passed through four fixing screw holes 216 formed in the front cover 21, the camera provided by the embodiment of the present invention is fixed in the corresponding protective cover, and the cable of the second motor 51 and the cable of the FPC are respectively connected to the relevant control board of the camera. When the optical filter is switched: the first filter 322a is a combined filter for cutting off the infrared light and the polarized light formed by the reflection of the light, and is generally used in the daytime; the second filter 322b is a full-transmission filter, and is generally used at night. In daytime, through software intelligent recognition control, the first motor 41 is started to rotate in a certain direction, the first motor 41 drives the screw rod 42 to rotate, the screw rod 42 drives the sliding block 43 to move, the sliding block 43 drives the optical filter bracket 321, the first optical filter 322a and the second optical filter 322b to axially move along the sliding rod 35, when the optical filter bracket 321 moves to a certain distance, the second switching limiting piece 324b arranged on the optical filter bracket moves to the sensing area of the second optical coupling plate 38, the second optical coupling plate 38 gives a feedback signal to the camera to stop the rotation of the first motor 41, at the moment, the first optical filter 322a just coincides with the avoidance groove 311 arranged on the bracket body 31, light coming from the lens 1 just passes through the first optical filter 322a and the avoidance groove 311 and finally reaches the imaging surface of the sensor 33 on the sensor plate 34, due to the existence of the first optical filter 322a, the infrared light can be well cut off and the reflected light can be weakened, and the imaging quality is improved. Similarly, at night, through software intelligent recognition control, the first electrode motor is started to rotate in the opposite direction, the motor drives the screw rod 42 to rotate, the screw rod 42 drives the sliding block 43 to move, the sliding block 43 drives the optical filter bracket 321, the first optical filter 322a and the second optical filter 322b to move along the other direction of the sliding rod 35 shaft, when the optical filter bracket 321 moves to a certain distance, the first switching limiting piece 324a arranged on the optical filter bracket moves to the sensing area of the first optical coupling plate 37, the first optical coupling plate 37 gives a feedback signal to the camera to stop the rotation of the first motor 41, at the moment, the second optical filter 322b just coincides with the avoidance groove 311 arranged on the bracket body 31, the light coming from the lens 1 just can pass through the second optical filter 322b and the avoidance groove 311 and finally reaches the imaging surface of the sensor 33 on the sensor plate 34, due to the existence of the second optical filter 322b, the brightness is increased, and the imaging quality is improved.

During the adjustment of the depth of field: referring to fig. 3, when a part of the image is blurred due to an excessively small depth of field in the image, a command is issued to the camera through remote control to trigger the second motor 51 to rotate in a certain direction, at this time, when the second motor 51 rotates, the rack 52 moves in a certain direction in the rack groove 211, due to the action of the inclined plane 521 on the rack 52, the inclined plane 521 on the rack 52 gives an upward thrust to the two convex points 312 on the bracket, so that the bracket structure 3 rotates by a certain angle around the axes of the left and right rotating shafts 36 on the bracket, when the included angle α between the optical axis 11 of the lens 1 and the imaging plane of the sensor 33 rotates to a certain angle, the image monitored by the camera can be completely and clearly imaged on the imaging plane of the camera, so as to obtain the best recognition effect, at this time, a command for stopping rotation of the second motor 51 is issued, so that the second motor 51 stops rotating.

In the field of intelligent traffic monitoring, different use scenarios of cameras are: for example, the monitoring camera has different installation heights and uses the lens 1 with different focal length, the alpha angle values are all different, and in actual use, the embodiment of the utility model can obtain any required alpha angle value according to the actual use scene.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A camera, comprising: a lens;

2. The camera according to claim 1, wherein the direction of arrangement of the filters in the filter assembly is the first direction, and the first direction is parallel to the second direction.

3. The camera of claim 2, further comprising a first drive mechanism for driving movement of the optical filter assembly in the first direction;

the first driving mechanism is mounted on the bracket body.

4. The camera of claim 3, wherein the first driving mechanism comprises a first motor, a lead screw in transmission connection with the first motor, and a slide block in threaded fit with the lead screw;

5. The camera of claim 4, wherein the support structure further comprises a sliding rod extending along the first direction, the filter support being in sliding engagement with the sliding rod, an orthographic projection of the sliding rod on the filter support being misaligned with the filter.

6. The camera of claim 5, wherein there are two sliding rods, two sliding rods are disposed in parallel, and the filter holder is slidably engaged with the two sliding rods.

7. A camera according to any one of claims 1 to 6, further comprising a second drive mechanism for driving rotation of the mounting structure;

8. The camera of claim 7, wherein the second drive mechanism comprises a second motor, a gear in driving connection with the second motor, and a rack engaged with the gear; the gear drives the rack to move along the first direction;

the rack deviates from one side of the rack groove and is provided with an inclined surface, the inclined surface is abutted to the support structure, and when the rack moves along the first direction, the distance between the front cover and the support structure is changed along with the angle of the inclined surface.

9. The camera of claim 8, wherein a ball groove for receiving a ball is provided in the rack groove, and a side of the rack facing the rack groove is in contact with the ball received in the ball groove.

10. The camera of claim 9, wherein a side of the bracket body facing the front cover is provided with a convex point, and the convex point abuts against the inclined surface.

11. The camera of claim 10, wherein the bracket structure further comprises a pivot provided on the bracket body, and the front cover is formed with a rotation groove engaged with the pivot.