CN216852084U

CN216852084U - Camera head

Info

Publication number: CN216852084U
Application number: CN202123214069.9U
Authority: CN
Inventors: 罗小平; 谢涌铁
Original assignee: Shenzhen Longhorn Automotive Electronic Equipment Co Ltd
Current assignee: Shenzhen Longhorn Automotive Electronic Equipment Co Ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-06-28
Anticipated expiration: 2031-12-20

Abstract

The embodiment of the utility model provides a camera, including the casing, assemble in the PCB board of casing, wear to locate camera lens and a plurality of spliced poles that adopt the material that coefficient of thermal expansion is low on the casing to make, the spliced pole has predetermined length and both ends respectively with casing and PCB board relatively fixed and make the image sensor on the PCB board be located the focus position of camera lens. The embodiment of the utility model provides a through setting up the spliced pole that a plurality of root adoption thermal expansion coefficient low material was made, on the spliced pole both ends were fixed in casing and PCB board respectively, the spliced pole is injectd the distance between casing and the PCB board with predetermined length and is equated to and has also injectd the distance between camera lens and the image sensor, thereby guarantees image sensor is difficult for receiving the exogenic action and skew the focus position of camera lens, and the spliced pole adopts low expansion coefficient material, can not lead to the distance between camera lens and the image sensor to change by a wide margin because of the thermal expansion under the high temperature environment yet, effectively improves the hot drift phenomenon.

Description

Camera head

Technical Field

The embodiment of the utility model provides a photographic equipment technical field especially relates to a camera.

Background

Along with the higher and higher requirements of people on the definition of shot pictures, the focusing stability of the camera is also higher and higher. The camera usually includes the casing, assemble in the casing and one side surface is assembled the PCB board that has image sensor and wears to locate on the casing and stretch into the inside one end of casing is just right image sensor's camera lens, when shooing, need with image sensor places in just in the focus position of camera lens can guarantee the definition of shooing the picture. However, the camera can generate a large amount of heat after working for a long time, each component in the camera is very easy to expand by heating under a high-temperature environment, the lens and the image sensor are respectively fixed on the shell and the PCB, the distance between the lens and the image sensor is very easy to change by the influence of the expansion by heating, and then the phenomenon of thermal drift is generated due to the fact that the shot picture is fuzzy due to the fact that the image sensor is out of focus.

The common method for improving the thermal drift phenomenon of the camera is to arrange a lens base below the lens, the lens is connected with the lens base through a connecting piece, the connecting piece can drive the lens to move along the optical axis direction of the lens within a certain range to preset displacement, and the preset displacement compensates the offset distance of the focal position of the image sensor relative to the lens caused by the thermal expansion of the internal components of the camera. However, the design and installation difficulty of the lens base and the connecting piece is high, and different displacement values are required to be set according to different lenses in the preset displacement, which is not enough to match with the existing common camera structure.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a technical problem who solves provides a camera, and based on the structural design of common camera, the structure is small and exquisite, assembles conveniently and improves the hot drift phenomenon of camera greatly.

In order to solve the technical problem, an embodiment of the utility model provides a following technical scheme: the utility model provides a camera, includes the casing, assemble in the casing and one side surface equipment have image sensor's PCB board, wear to locate on the casing and stretch into the inside one end of casing is just right image sensor's camera lens and a plurality of spliced poles that adopt the material that coefficient of thermal expansion is low to make, the spliced pole have predetermined length and both ends respectively with the casing with PCB board relatively fixed and make image sensor is located the focus position of camera lens.

Furthermore, a caulking groove is formed in the position, corresponding to each connecting column, of the shell, and one end, butted with the shell, of each connecting column is fixed in the caulking groove through riveting or welding technology.

Furthermore, a threaded hole is formed in the position, corresponding to each connecting column, of the shell, a first threaded portion is arranged at one end, butted with the shell, of each connecting column, and the connecting columns are fixed in the threaded holes through the first threaded portions in a threaded manner.

Furthermore, the PCB is provided with a through hole corresponding to each connecting column, and one end of each connecting column, which is butted with the PCB, penetrates through the through hole and is welded and fixed with the PCB.

Furthermore, a through hole is formed in the position, corresponding to each connecting column, of the PCB, a second threaded portion is formed in one end, butted with the PCB, of each connecting column, and penetrates through the through hole, and a nut is arranged on the PCB, is far away from the side, where the image sensor is assembled, of the board surface, is correspondingly screwed on the second threaded portion and abuts against the board surface of the PCB.

Furthermore, a UV adhesive layer is filled between the side plate surface of the PCB board provided with the image sensor and the shell.

Furthermore, a boss is further arranged on the inner surface of the side wall, opposite to the side face of the side of the shell, where the image sensor is assembled with the PCB, the UV glue layer is adhered to the outer end face of the boss, and the side face of the side of the shell, where the image sensor is assembled with the PCB, is correspondingly abutted against the UV glue layer.

Furthermore, the inner surface of the side wall of the shell, which is opposite to the side surface of the PCB board where the image sensor is assembled, is also provided with a mounting groove, the center of the mounting groove is provided with a mounting hole penetrating through the side wall, the lens is arranged in the mounting hole in a penetrating manner and is fixedly connected with the shell, the boss is arranged at the corner of the mounting groove, and the outer end surface of the boss is flush with the outer end surface of the notch of the mounting groove.

Further, the lens and the mounting hole are fixedly connected through thread fit, and a sealing glue is filled between the lens and the shell.

After the technical scheme is adopted, the embodiment of the utility model provides an at least, following beneficial effect has: the embodiment of the utility model provides a through set up a plurality of spliced poles that adopt the material that coefficient of thermal expansion is low between casing and PCB board, the spliced pole has predetermined length and both ends respectively with the casing with the PCB board relatively fixed and make the image sensor is located the focus position of camera lens, the spliced pole is injectd with predetermined length the casing with the distance between the PCB board is equal to and also injectd the camera lens with the distance between the image sensor, thereby guarantee that the image sensor is difficult for receiving the external force and skew the focus position of camera lens, and the spliced pole adopts low expansion coefficient material, for example steel, metal copper, quartz, glass fiber, pottery etc. thermal expansion coefficient is less than 20 ppm/K's material and makes, when necessary, can also carry out operations such as tin plating, silver-plating or gilding at the spliced pole surface, the connecting column can not cause the distance between the lens and the PCB to be greatly changed due to thermal expansion even under the high-temperature environment generated by long-time work of the camera, thereby ensuring that the image sensor on the PCB is always positioned at the position of the focus of the lens and effectively improving the thermal drift phenomenon.

Drawings

Fig. 1 is a schematic view of a split state of an optional embodiment of the camera of the present invention.

Fig. 2 is a schematic view of an overall three-dimensional structure of an optional embodiment of the camera of the present invention.

Fig. 3 is a schematic view of a disassembled state of another alternative embodiment of the camera head of the present invention at another perspective angle.

Fig. 4 is a schematic view of an overall three-dimensional structure of a housing according to an optional embodiment of the camera of the present invention.

Fig. 5 is a cross-sectional view of a longitudinal section of a diagonal of a slot of a housing mounting groove of an alternative embodiment of the camera of the present invention.

Fig. 6 is a cross-sectional view of a longitudinal section of an optional embodiment of the camera of the present invention through a central line of two UV glue layers.

Detailed Description

The present application will now be described in further detail with reference to the accompanying drawings and specific examples. It is to be understood that the following illustrative embodiments and description are only intended to illustrate the present invention, and are not intended to limit the present invention, and features in the embodiments and examples may be combined with each other in the present application without conflict.

As shown in fig. 1-6, an optional embodiment of the present invention provides a camera, which comprises a housing 1, a PCB 2 assembled with an image sensor 21 in the housing 1 and assembled on a side surface thereof, a connecting column 4 disposed on the housing 1 and extending into the housing 1, wherein the lens 3 of the image sensor 21 and the connecting column 4 are made of a material with a low thermal expansion coefficient, the connecting column 4 has a predetermined length and two ends thereof are fixed to the housing 1 and the PCB 2 respectively, so that the image sensor 21 is located at a focal point of the lens 3.

In the present embodiment, a plurality of connection posts 4 made of a material with a low thermal expansion coefficient are disposed between the housing 1 and the PCB 2, the connection posts 4 have a predetermined length, and two ends of the connection posts 4 are respectively fixed relative to the housing 1 and the PCB 2, so that the image sensor 21 on the PCB 2 is located at the focal position of the lens 3, the connection posts 4 limit the distance between the housing 1 and the PCB 2 to be equal to the distance between the lens 3 and the image sensor 21, thereby ensuring that the image sensor 21 is not easily affected by an external force to deviate from the focal position of the lens 3, and the connection posts 4 are made of a material with a low expansion coefficient, such as steel, copper, quartz, fiberglass, ceramic, etc., with a thermal expansion coefficient less than 20ppm/K, and if necessary, tin plating may be performed on the outer surface of the connection posts 4, Silver plating or gold plating and other operations, the connecting column 4 can not cause the great change of the distance between the lens 3 and the PCB 2 due to thermal expansion even under the high-temperature environment generated by the long-time work of the camera, the image sensor 21 on the PCB 2 is ensured to be always positioned at the position of the focus of the lens 3, and the thermal drift phenomenon is effectively improved.

In another optional embodiment of the present invention, as shown in fig. 3 to 5, a caulking groove 10 is formed on the housing 1 at a position corresponding to each of the connecting posts 4, and one end of each connecting post 4 abutting against the housing 1 is fixed in the caulking groove 10 by a riveting or welding process. This embodiment is through corresponding to every on the casing 1 the caulking groove 10 has been seted up to the position department of spliced

pole

4, 4 one end of spliced pole is inserted in the caulking groove 10 and fixed through riveting or welded connection, simple process, it is firm to connect.

In another optional embodiment of the present invention, as shown in fig. 3, a threaded hole 10 is opened at a position corresponding to each of the connection posts 4 on the casing 1, a first threaded portion 41 is provided at one end of each of the connection posts 4, which is abutted against the casing 1, and the connection post 4 is screwed into the threaded hole 10 by the first threaded portion 41. In the embodiment, the threaded holes 10 are formed in the shell 1 corresponding to the connecting columns 4, the connecting columns 4 are fixed in the threaded holes 10 through the first threaded parts 41 arranged at one ends of the connecting columns, so that the connecting firmness between the connecting columns 4 and the shell 1 is guaranteed, and meanwhile, the disassembly and the assembly are convenient.

In another optional embodiment of the present invention, as shown in fig. 1 and 5, a through hole 23 is opened on the PCB 2 corresponding to each connecting column 4, and one end of the connecting column 4 abutting against the PCB 2 is inserted into the through hole 23 and is welded to the PCB 2. This embodiment is through on the PCB board 2 corresponding to every the perforation 23 is seted up to the position department of spliced pole 4, spliced pole 4 with the one end of PCB board 2 butt joint is worn to locate in the perforation 23 and with PCB board 2 welded fastening, guarantee spliced pole 4 and PCB board 2 fastness of being connected.

In the present invention, in still another optional embodiment, as shown in fig. 3, 5 and 6, a through hole 23 is opened at a position corresponding to each of the connecting posts 4 on the PCB 2, the connecting post 4 and one end of the PCB 2 abutting against each other are provided with a second thread portion 43 and are penetrated and disposed in the through hole 23, and a nut 5 is additionally provided from the PCB 2 is far away from the assembly and is provided with the image sensor 21 side, and the surface of the PCB is correspondingly screwed on the second thread portion 43 and tightly abutted against the surface of the PCB 2. This embodiment is through PCB board 2 corresponds every perforation 23 is seted up to the position of spliced pole 4 to with spliced pole 4 with second screw thread portion 43 that the one end that PCB board 2 docked set up wears to locate in perforation 23, have nut 5 in addition kept away from PCB board 2 to be assembled the face of image sensor 21 one side correspond the spiro union in second screw thread portion 43 and support tightly PCB board 2 face has realized the fixed connection between spliced pole 4 and PCB board 2, and threaded connection's mode makes things convenient for the dismouting more.

In another optional embodiment of the present invention, as shown in fig. 1 and fig. 6, a UV glue layer 6 is further filled between a side of the PCB 2 assembled with the image sensor 21 and the housing 1. This embodiment is through PCB board 2 equipment have image sensor 21 one side face with fill UV glue film 6 between the casing 1, it is right to realize the accurate focusing of camera promotes the definition of shooing the picture.

In the present invention, as shown in fig. 1, fig. 3 and fig. 6, the inner surface of the lateral wall 12 of the housing 1 opposite to the side of the PCB board 2 with the image sensor 21 assembled thereon is further provided with a boss 121, the UV glue layer 6 is adhered on the outer end surface of the boss 121, the PCB board 2 with the image sensor 21 assembled thereon has a side of the board corresponding to the abutment against the UV glue layer 6. In this embodiment, the boss 121 is arranged on the inner surface of the side wall 12 of the PCB 2 board surface of the image sensor 21 just opposite to the assembly of the housing 1, the UV glue layer 6 is adhered to the outer end surface of the boss 121, the PCB 2 is assembled with one side board surface of the image sensor 21, and the camera is focused by filling the UV glue layer 6 between the board surfaces of the image sensor 21 on the boss 121 and the PCB 2, so that the UV glue layer 6 is prevented from being exposed to the external environment, and the focusing stability of the image sensor 21 is improved.

In the present invention, as shown in fig. 3 and fig. 4, a mounting groove 123 is further formed on the inner surface of the side wall 12 opposite to the side surface of the image sensor 21 and assembled with the PCB board 2 of the housing 1, a mounting hole 125 penetrating through the side wall 12 is disposed at the center of the mounting groove 123, the lens 3 is inserted into the mounting hole 125 and fixedly connected to the housing 1, the boss 121 is disposed at the corner of the mounting groove 123 and the outer end surface of the boss 121 is flush with the outer end surface of the notch of the mounting groove 123. In the embodiment, the mounting groove 123 is formed on the inner surface of the side wall 12 of the housing 1 facing the image sensor 21, and the mounting hole 125 is formed in the center of the mounting groove 123 for the lens 3 to penetrate therethrough, so that the lens 3 is fixedly connected with the housing 1; the boss 121 set up in the corner department of mounting groove 123 and the outer terminal surface of boss 121 flushes with the notch outer terminal surface of mounting groove 123, is convenient for glue and establishes UV glue film 6 and has also reduced the quantity of UV glue, reduces manufacturing cost. When the equipment camera, wear to locate in mounting hole 125 earlier camera lens 3 relatively fixed with casing 1, again with the one end and the casing 1 fixed connection of spliced pole 4, then glue on the outer terminal surface of boss 121 and establish UV glue film 6 and realize accurate focusing with PCB board 2 butt to UV glue film 6 surface, keep away from the one end and the PCB board 2 fixed connection of casing 1 with spliced pole 4 at last.

In another optional embodiment of the present invention, as shown in fig. 1 and 5, the lens 3 is fixedly connected to the mounting hole 125 through a screw-fit and a sealant 7 is filled between the lens 3 and the housing 1. The lens 3 and the mounting hole 125 are fixedly connected through thread fit, so that the structure is simple and the assembly and disassembly are convenient; a sealant 7 is filled between the lens 3 and the shell 1, and the lens 3 and the shell 1 are connected in a sealing manner, so that the damage of the camera caused by the water vapor, dust and the like of the external environment entering the shell 1 can be avoided; meanwhile, the sealant 7 can also be used for compensating an axial clearance caused by a dimensional error between the lens 3 and the threaded connection part of the mounting hole 125, and improving the axial dimensional accuracy when the lens 3 is assembled.

The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, and these forms are within the scope of the present invention.

Claims

1. The utility model provides a camera, includes the casing, assemble in just one side surface equipment has image sensor's PCB board and wears to locate in the casing and stretch into on the casing inside one end just right image sensor's camera lens, a serial communication port, camera still includes the spliced pole that a plurality of adoption thermal expansion coefficient is less than 20ppm K's material and makes, the spliced pole have predetermined length and both ends respectively with the casing with PCB board relatively fixed and make image sensor is located the focus position of camera lens.

2. The camera head according to claim 1, wherein a caulking groove is formed in the housing at a position corresponding to each of the connection posts, and one end of the connection post, which is butted against the housing, is fixed in the caulking groove by a riveting or welding process.

3. The camera head according to claim 1, wherein a threaded hole is formed in the housing at a position corresponding to each of the connecting posts, a first threaded portion is formed at one end of each connecting post, which is in butt joint with the housing, and the connecting post is screwed and fixed in the threaded hole by the first threaded portion.

4. The camera head according to claim 2 or 3, wherein a through hole is formed in the PCB at a position corresponding to each connecting column, and one end of each connecting column, which is butted against the PCB, penetrates through the through hole and is welded and fixed with the PCB.

5. The camera head according to claim 2 or 3, wherein a through hole is formed in the PCB at a position corresponding to each connecting post, a second threaded portion is formed at one end of each connecting post, which is in butt joint with the PCB, and penetrates through the through hole, and a nut is correspondingly screwed onto the second threaded portion from the surface of the PCB, on which the image sensor is assembled, and abuts against the surface of the PCB.

6. The camera head as claimed in claim 1, wherein a UV glue layer is filled between a side of the PCB board where the image sensor is mounted and the housing.

7. The camera head according to claim 6, wherein a boss is further disposed on an inner surface of a side wall of the housing opposite to a side of the PCB assembly where the image sensor is mounted, the UV adhesive layer is adhered to an outer end surface of the boss, and a side of the PCB assembly where the image sensor is mounted is correspondingly abutted against the UV adhesive layer.

8. The camera as claimed in claim 7, wherein a mounting groove is further formed on an inner surface of a side wall of the housing opposite to a side of the PCB assembly on which the image sensor is mounted, a mounting hole is formed in a center of the mounting groove and penetrates through the side wall, the lens is inserted into the mounting hole and is fixedly connected to the housing, the boss is disposed at a corner of the mounting groove, and an outer end surface of the boss is flush with an outer end surface of a notch of the mounting groove.

9. The camera of claim 8, wherein the lens is fixedly connected with the mounting hole by screw-fitting and a sealant is filled between the lens and the housing.