CN111698392B

CN111698392B - Video camera

Info

Publication number: CN111698392B
Application number: CN201910185448.8A
Authority: CN
Inventors: 李杨; 叶展
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2019-03-12
Filing date: 2019-03-12
Publication date: 2022-01-07
Anticipated expiration: 2039-03-12
Also published as: CN111698392A

Abstract

The invention relates to a camera which comprises a first shell, a lens module and an end plate, wherein a window is arranged on the first shell, and a first installation cavity is formed in the first shell. The lens module is installed in the first installation cavity and comprises a lens, and the lens and the window are arranged oppositely. The lens module comprises a second shell, a second installation cavity is formed in the second shell, the second shell is provided with an installation part, a light outlet is formed in the installation part, and the outer surface of the installation part is an installation surface. The end plate is provided with an image sensor, the image sensor is arranged opposite to the light outlet, the end plate is connected with the mounting part, a sealing body is arranged between the end plate and the mounting surface, and the sealing body is arranged around the periphery of the light outlet. Be provided with the seal between end plate and the installation face, the seal is with light-emitting window and external isolated to can prevent that external dust and light from getting into the second installation cavity from light-emitting window, prevent that external dust and light from influencing the formation of image of camera. The camera has better imaging effect.

Description

Video camera

Technical Field

The present invention relates to a camera.

Background

The camera includes the shell, has the installation cavity in the shell, has seted up the window on the shell, generally installs transparent safety cover on the window. The installation cavity is internally provided with a lens module which comprises a lens, and the lens is arranged opposite to the protection cover.

The lens module comprises a shell, wherein an installation cavity is formed in the shell, an optical element is arranged in the installation cavity of the lens module, and the optical element can process and transmit optical signals. The shell is provided with an installation part, and a light outlet is formed in the installation part. The image sensor is arranged on the end plate, the end plate is connected with the mounting portion, the image sensor is arranged opposite to the light outlet, and the image sensor is arranged opposite to the optical element. The image sensor is used for receiving the optical signal of the optical element and transmitting the optical signal to the processing chip.

The current end plate passes through the binder to be fixed on the surface of installation department to have the clearance between the surface of end plate and installation department, this clearance and light-emitting opening intercommunication, external dust and light enter into the light-emitting opening from this clearance easily, and then enter into the installation intracavity of camera lens module, reduce the imaging of camera.

Disclosure of Invention

The invention aims to provide a camera capable of improving imaging effect.

The technical scheme of the invention is as follows:

a camera, comprising:

the window is arranged on the first shell, and a first installation cavity is formed in the first shell;

the lens module is arranged in the first installation cavity and comprises a lens, and the lens is arranged opposite to the window; the lens module comprises a second shell, a second mounting cavity is arranged in the second shell, the second shell is provided with a mounting part, a light outlet is formed in the mounting part, and the outer surface of the mounting part is a mounting surface;

the end plate, be provided with image sensor on the end plate, image sensor with the light-emitting window sets up relatively, the end plate with the installation department links to each other, just the end plate with be provided with the seal between the installation face, the seal encloses to be established the periphery of light-emitting window.

Preferably, in the above camera, the image sensor is provided on an inner surface of the end plate, and the sealing body is provided between the inner surface of the end plate and the mounting surface.

Preferably, in the above camera, the end plate has an inner surface, an outer surface, and a side surface, the image sensor is provided on the inner surface of the end plate, and the sealing body is provided between the side surface of the end plate and the mounting surface.

Preferably, in the above camera, the sealing body is a sealant or an adhesive tape or a sealing ring or foam.

Preferably, in the above camera, the camera further includes a connecting body connecting the end plate and the mounting portion.

Preferably, in the above camera, the connecting body is an adhesive paste provided between the inner surface of the end plate and the mounting surface.

Preferably, in the camera, the sealing body is provided around the periphery of the connecting body.

Preferably, in the camera, a light splitting element is disposed in the second mounting cavity, and the light splitting element includes two light emitting surfaces; the number of the installation parts is two, light outlets are formed in the two installation parts, and the two light outlet surfaces are respectively opposite to the two light outlets; the quantity of end plate is two, two the end plate respectively with two the installation department is connected.

Preferably, in the camera, the light-emitting surface is parallel to the image sensor opposite to the light-emitting surface, and one of the light-emitting surfaces is perpendicular to the axial line of the lens.

Preferably, in the camera, the included angle between the two end plates is 45-135 degrees.

The camera of the invention has the advantages that: be provided with the seal between end plate and the installation face, the seal is with light-emitting window and external isolated to can prevent that external dust and light from getting into the second installation cavity from light-emitting window, prevent that external dust and light from influencing the formation of image of camera. Compared with the existing camera, the camera provided by the invention has a better imaging effect.

Drawings

FIG. 1 is a partial side view of a lens module with a seal removed according to an embodiment of the invention;

FIG. 2 is a partial top view of the lens module with the sealing body removed according to the embodiment of the invention;

FIG. 3 is a partially exploded view of the camera with the seal removed in accordance with an embodiment of the present invention;

FIG. 4 is a block diagram of two image sensors according to an embodiment of the present invention;

FIG. 5 is a partial block diagram of a camera in accordance with an embodiment of the present invention;

FIG. 6 is a view of a seal between a first end plate and a first mounting surface according to an embodiment of the present invention;

fig. 7 is a view showing a structure of a seal between the second end plate and the second mounting surface according to the embodiment of the present invention.

The component names and designations in the drawings are as follows:

the optical lens assembly comprises a first housing 10, a window 11, a lens 20, a second housing 30, a second mounting cavity 31, a first light outlet 32, a first mounting surface 321, a second light outlet 33, a second mounting surface 331, a beam splitter prism 40, a first light outlet 41, a second light outlet 42, a first end plate 50, a first outer surface 51, a first inner surface 52, a first sealing surface 521, a first side surface 53, a first image sensor 54, a second end plate 60, a second outer surface 61, a second inner surface 62, a second sealing surface 621, a second side surface 63, a second image sensor 64, a sealing body 70, a connecting body 80 and a gap 90.

Detailed Description

Example 1

The embodiment discloses a camera, which comprises a first shell 10, a lens module and an end plate, wherein a window 11 is arranged on the first shell 10, and a first installation cavity is arranged in the first shell 10; the lens module is installed in the first installation cavity, the lens module includes a lens 20, and the lens 20 is disposed opposite to the window 11. The lens module includes a second housing 30, a second mounting cavity 31 is provided in the second housing 30, the second housing 30 has a mounting portion, a light outlet is provided on the mounting portion, and an outer surface of the mounting portion is a mounting surface. The end plate is provided with an image sensor, the image sensor is arranged opposite to the light outlet, the end plate is connected with the mounting part, a sealing body 70 is arranged between the end plate and the mounting surface, and the sealing body 70 is arranged around the periphery of the light outlet.

The gap is arranged between the end plate of the existing camera and the mounting surface of the mounting part, and the gap is not sealed, so that external dust and light enter the light outlet from the gap and then enter the mounting cavity of the lens module, and the camera shooting effect is influenced. The camera of the present embodiment has the advantages that: be provided with seal 70 between end plate and the installation face, seal 70 is with light-emitting opening and external isolated to can prevent that external dust and light from getting into second installation cavity 31 from the light-emitting opening, prevent that external dust and light from influencing the formation of image of camera. Compared with the existing camera, the camera of the embodiment has better imaging effect.

The second mounting cavity 31 of the lens module is generally mounted with a light splitting element, for example, the light splitting element may be a light splitting prism 40, and the light splitting prism 40 has a light emitting surface opposite to the light outlet, so that the image sensor is opposite to the light emitting surface of the light splitting prism 40. The beam splitter prism 40 transmits the collected optical signal to the image sensor, the image sensor transmits the optical signal to the processing chip, and the processing chip processes the optical signal to obtain an image.

The number of the light emitting surfaces of the light splitting prism 40 may be 2, 3, 4, and the like, and preferably, the number of the light emitting surfaces of the light splitting prism 40 of this embodiment may be two, where the two light emitting surfaces are the first light emitting surface 41 and the second light emitting surface 42, respectively. Accordingly, the number of the mounting portions on the second housing 30 of the lens module is two, the two mounting portions are a first mounting portion and a second mounting portion, respectively, the outer surface of the first mounting portion is a first mounting surface 321, and the outer surface of the second mounting portion is a second mounting surface 331. The first installation part and the second installation part are respectively provided with a light outlet, the light outlet on the first installation part is a first light outlet 32, the light outlet on the second installation part is a second light outlet 33, the first light outlet 32 and the second light outlet 33 are respectively communicated with the second installation cavity 31, and the first light outlet 32 is opposite to and parallel to the first light outlet 41. The second light outlet 33 is opposite to and parallel to the second light emitting surface 42. Accordingly, the number of end plates is two, the two end plates being the first end plate 50 and the second end plate 60, respectively. Referring to fig. 1, 2 and 4, the first end plate 50 has a first outer surface 51, a first inner surface 52 and a first side surface 53, and the second end plate 60 has a second outer surface 61, a second inner surface 62 and a second side surface 63. Accordingly, the number of image sensors is two, the two image sensors being the first image sensor 54 and the second image sensor 64, respectively. The first image sensor 54 is mounted on the first inner surface 52 of the first end plate 50, and other electronic components are also mounted on the first outer surface 51 of the first end plate 50. A second image sensor 64 is mounted on the second inner surface 62 of the second end plate 60 and other electronic components are mounted on the second outer surface 61 of the second end plate 60.

As shown in fig. 3, the first light emitting surface 41 is disposed parallel to the first image sensor 54, and the second light emitting surface 42 is disposed parallel to the second image sensor 64. The first light emitting surface 41 may be disposed parallel to the first light outlet 32, and similarly, the second mounting surface 331 may be disposed parallel to the second light outlet 33. The first light outlet 32 and the second light outlet 33 have sufficient sizes so as not to block signal transmission between the first light outlet 41 and the first image sensor 54 and between the second light outlet 42 and the second image sensor 64. The first light emitting surface 41 may be a rectangular surface, and the second light emitting surface 42 may be a rectangular surface. The first light outlet 32 may be a rectangular opening, and the second light outlet 33 may be a rectangular opening. As shown in fig. 4, the first image sensor 54 has a rectangular block structure, and the first image sensor 54 is disposed opposite to the first light outlet 32 of the rectangular opening structure. The second image sensor 64 has a rectangular block structure, and the second image sensor 64 is disposed opposite to the second light outlet 33 having the rectangular opening structure.

The first inner surface 52 of the first end plate 50 is disposed opposite to the first mounting surface 321, such that the first image sensor 54 is disposed opposite to the first light emitting surface 41. The first image sensor 54 is used for receiving the optical signal transmitted by the first light emitting surface 41. The second inner surface 62 of the second end plate 60 is disposed opposite to the second mounting surface 331, so that the second image sensor 64 is disposed opposite to the second light emitting surface 42. The second image sensor 64 is used for receiving the optical signal transmitted by the second light emitting surface 42. For example: the first image sensor 54 may convert the received optical signal into a color electrical signal and transmit the color electrical signal to the processing chip, and the second image sensor 64 may convert the received optical signal into a brightness electrical signal and transmit the brightness electrical signal to the processing chip. The processing chip performs fusion processing on the color electric signals and the brightness electric signals to obtain a color image, the processing chip sends the color image to the CPU, and the CPU performs coding processing on the color image and outputs the coded image.

In the lens module without the sealing body in this embodiment, as shown in fig. 1, fig. 2 and fig. 3, a gap 90 is formed between the first inner surface 52 of the first end plate 50 and the first mounting surface 321, and a gap 90 is also formed between the second inner surface 62 of the second end plate 60 and the second mounting surface 331. The gap 90 communicates with the outside and the second mounting cavity 31, and dust from the outside can enter the second mounting cavity 31 through the gap 90 and deposit on the surfaces of the first light emitting surface 41 and the second light emitting surface 42 or on the inner surface of the lens 20, thereby affecting the transmission of the optical signal of the beam splitter prism 40 and the imaging of the camera. The dust entering the second mounting cavity 31 from the outside also affects the optical signal processing and transmission of other components, and further affects the imaging of the camera. External light can enter the second mounting cavity 31 from the gap 90, which affects the optical signal transmission effect between the light-emitting surface of the beam splitter prism and the image sensor, and further affects the imaging of the camera.

The lens module with the sealing body added is shown in fig. 5, 6 and 7, the sealing body is added between the first inner surface 52 of the first end plate 50 and the first mounting surface 321, and the sealing body is added between the second inner surface 62 of the second end plate 60 and the second mounting surface 331, and the sealing body is arranged in the gap 90, so that the first light outlet 32 and the second light outlet 33 are isolated from the outside, thereby preventing external dust and light from entering the second mounting cavity 31, and achieving the purpose of improving the imaging effect of the camera. The sealing body needs to isolate all light outlets communicating with the second mounting cavity 31 from the outside. For example, when the number of the light-emitting ports is 3, 3 sealing bodies are provided, and the 3 sealing bodies isolate the 3 light-emitting ports from the outside, so that external dust and light are prevented from entering the second mounting cavity 31 from any one of the light-emitting ports.

As shown in fig. 1 and 2, the first inner surface 52 of the first end plate 50 and the first mounting surface 321 and the inner end of the first side surface 53 and the first mounting surface 321 have a gap 90 therebetween. Gaps 90 are provided between the second inner surface 62 of the second end plate 60 and the second mounting surface 331 and between the inner end of the second side surface 63 and the second mounting surface 331. I.e., gaps 90 are provided between the inner surface of the end plate and the mounting surface and between the side surfaces and the mounting surface. According to the different mounted position of sealing, this embodiment includes two kinds of technical scheme:

the first scheme is as follows: preferably, the sealing body 70 of the present embodiment is disposed between the inner surface and the mounting surface of the end plate. Two clamping surfaces are formed between the inner surface of the end plate and the mounting surface. With the seal setting between these two clamping surfaces, be favorable to playing the fixed effect of centre gripping to the seal to need not set up mounting or fixed knot structure in addition and fix the position of seal.

Scheme II: preferably, the sealing body 70 of the present embodiment is disposed between the side surface of the end plate and the mounting surface. Because the side of end plate is located the outside, it is more convenient to set up the seal.

In the first and second embodiments, the sealing body 70 is preferably a sealant or an adhesive tape or a sealing ring.

Preferably, the sealing body 70 of the present embodiment may also be foam. The foam is a material foamed by plastic particles. The foam has elasticity, and the foam has the advantages that: light weight, quick pressure-sensitive fixation, convenient use, free bending, ultrathin volume and reliable performance.

The sealing body 70 of the present embodiment may be another sealing member having a sealing function. The effect of the sealant is optimal, the sealant can play a role in sealing and can also play a good role in connecting the end plate with the mounting surface, so that the end plate and the mounting surface do not need to be connected additionally, and the assembling process and time can be saved.

The sealant is an adhesive which deforms along with the shape of the sealing surface, is not easy to flow and has certain cohesiveness. It is made up by using dry or non-dry viscous material of asphalt, natural resin or synthetic resin, natural rubber or synthetic rubber, etc. as base material, adding inert fillers of talcum powder, clay, carbon black, titanium white powder and asbestos, etc. and adding plasticizer, solvent, solidifying agent and accelerator. Can be divided into three categories of elastic sealant, liquid sealing gasket and sealing putty.

When the sealing body 70 is a sealant, a circle of the sealant can be coated on the inner surface or the mounting surface of the end plate, and then the inner surface and the mounting surface of the end plate are closed until the sealant is solidified. Specifically, a ring of sealant can be injected onto the first inner surface 52 or the first mounting surface 321 of the first end plate 50 by automated assembly, and then the first inner surface 52 and the first mounting surface 321 are closed. And injecting a ring of sealant on the second inner surface 62 or the second mounting surface 331 of the second end plate 60 by automatic assembly, and then closing the second inner surface 62 and the second mounting surface 331. As shown in fig. 5, the inner surface and the mounting surface of the end plate may be closed first, and then a circle of sealant is injected between the side surface and the mounting surface of the end plate by automatic installation until the sealant is solidified. Specifically, a ring of sealant can be injected between the first side 53 of the first end plate 50 and the first mounting surface 321 by automated assembly. A bead of sealant is injected between the second side 63 of the second end plate 60 and the second mounting surface 331 by automated assembly. The sealant is arranged along the side face of the end plate, and when the end plate is of a rectangular plate block structure, the sealant is also of a rectangular annular structure.

Preferably, the camera further includes a connecting body 80, and the connecting body 80 connects the end plate and the mounting portion. The advantage of providing the connector 80 is that: the end plate and the mounting portion may be connected in advance so that the position of the image sensor on the end plate can be accurately aligned with the light exit surface of the prism 40. When the sealing body is arranged, the positions of the end plate and the mounting part are fixed, and the high position precision is achieved. Set up the seal this moment, need not consider and adjust the relative position of end plate and installation department to reduced the degree of difficulty that sets up the seal, this embodiment sets up connector 80 and carries out the benefit of being connected in advance to end plate and installation department promptly and is: the sealing body is convenient to arrange. At this time, when the sealing body is a sealant or an adhesive tape, the sealing body further plays a role in connecting and fixing the end plate and the mounting portion.

The connecting body 80 may be a screw, but the position accuracy of the end plate and the mounting portion cannot be satisfied by the screw connection. As shown in fig. 1, 2 and 3, the connecting body 80 is preferably an adhesive glue disposed between the inner surface and the mounting surface of the end plate. The end plate and the installation part are connected by using the adhesive glue, so that the connection is convenient, the occupied space is small, and the requirement on the position precision of the end plate and the installation part can be met. The end plate can be automatically installed on the inner surface or the installation surface of the end plate, adhesive glue is injected into the end plate, and then the inner surface and the installation surface of the end plate are closed. Specifically, as shown in fig. 3, two pieces of adhesive are first disposed on the first mounting surface 321, the two pieces of adhesive are disposed in parallel and opposite to each other, and the two pieces of adhesive are respectively disposed on two sides of the first light outlet 32, that is, the first light outlet 32 is disposed between the two pieces of adhesive. The first inner surface 52 and the first mounting surface 321 of the first end plate 50 are then abutted. Similarly, two pieces of adhesive are disposed on the second mounting surface 331 in parallel and opposite to each other, and the two pieces of adhesive are respectively disposed on two sides of the second light outlet 33, that is, the second light outlet 33 is disposed between the two pieces of adhesive. And then the second inner surface 62 and the second mounting surface 331 of the second end plate 60 are folded.

The first end plate 50 of the present embodiment may have a rectangular plate structure, and accordingly, a rectangular wire may be disposed on the first mounting surface 321 or an edge of the first mounting surface 321 forms a rectangular wire. When the first end plate 50 is connected to the first mounting surface 321, the first image sensor 54 and the first light emitting surface 41 can be ensured to have higher position accuracy by aligning the rectangular frame lines on the first end plate 50 and the first mounting surface 321. Similarly, the second end plate 60 may be a rectangular plate structure, and accordingly, a rectangular wire may be disposed on the second mounting surface 331 or an edge of the second mounting surface 331 forms a rectangular wire. When the second end plate 60 is connected to the second mounting surface 331, the second image sensor 64 and the second light emitting surface 42 can be ensured to have higher position accuracy by aligning the rectangular frame lines on the second end plate 60 and the second mounting surface 331.

Referring to fig. 3 and 5, the sealing body 70 is preferably disposed around the periphery of the connecting body 80. Since the connecting body 80 connects the end plate and the mounting portion in advance, it is convenient to dispose the sealing body 70 at the periphery of the connecting body 80.

As shown in fig. 7, preferably, the light-emitting surfaces are disposed parallel to the image sensor opposite to the light-emitting surfaces, and one of the light-emitting surfaces is perpendicular to the axis of the lens 20, which is advantageous for example: the utilization rate of light rays is improved, and the imaging effect is improved. Specifically, the first light emitting surface 41 is disposed parallel to the first image sensor 54, and the second light emitting surface 42 is disposed parallel to the second image sensor 64. The first light emitting surface 41 is perpendicular to the axis of the lens 20. Therefore, the first image sensor 54 is perpendicular to the axis line of the lens 20. The first end plate 50 carrying the first image sensor 54 is also perpendicular to the axis of the lens 20. The first end plate 50 is disposed adjacent to the second end plate 60, and the second end plate 60 may be disposed between the lens 20 and the first end plate 50.

As shown in fig. 5, the first end plate 50 is preferably angled with respect to the second end plate 60 at an angle of 45-135 degrees. For example, the included angles between the first end plate 50 and the second end plate 60 are 45 degrees, 70 degrees, 90 degrees, and 135 degrees. Preferably, the angle between the first end plate 50 and the second end plate 60 is 70 degrees, which benefits are for example: the utilization rate of light rays is improved, and the imaging effect is improved.

The camera of this embodiment can also include the light filling lamp, carries out the light filling to the camera through this light filling lamp, and the light filling lamp is used for improving the luminance of treating the control scene. The light supplement lamp can be a white light lamp or an infrared lamp.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and those skilled in the art can make many variations and modifications of the technical solution of the present invention by using the method disclosed in the above disclosure without departing from the technical solution of the present invention, and the present invention is covered by the claims.

Claims

1. A camera, comprising:

the device comprises a first shell (10), wherein a window (11) is arranged on the first shell (10), and a first installation cavity is formed in the first shell (10);

the lens module is arranged in the first installation cavity and comprises a lens (20), and the lens (20) is arranged opposite to the window (11); the lens module comprises a second shell (30), a second installation cavity (31) is formed in the second shell (30), the second shell (30) is provided with an installation part, the installation part is a plate-shaped structural member, a light outlet is formed in the installation part, the outer surface of the installation part is an installation surface, and the installation surface is a plane surface type;

the end plate is provided with an image sensor, the image sensor is arranged opposite to the light outlet, the end plate is connected with the mounting part, a sealing body (70) is arranged between the end plate and the mounting surface, and the sealing body (70) is arranged around the periphery of the light outlet;

a light splitting element (40) is arranged in the second mounting cavity (31), and the light splitting element (40) comprises two light emitting surfaces; the number of the installation parts is two, the two installation parts are integrally formed, light outlets are formed in the two installation parts, and the two light outlet surfaces are respectively opposite to the two light outlets; the number of the end plates is two, and the two end plates are respectively connected with the two mounting parts; two the installation department be preset the contained angle between the installation face.

2. The camera of claim 1, wherein the image sensor is disposed on an inner surface of the end plate, the seal (70) being disposed between the inner surface of the end plate and the mounting surface.

3. The camera of claim 1, wherein the end plate has an inner surface, an outer surface, and a side surface, the image sensor is disposed on the inner surface of the end plate, and the seal (70) is disposed between the side surface of the end plate and the mounting surface.

4. A camera according to any one of claims 1 to 3, characterized in that the sealing body (70) is a sealant or a tape or a sealing ring or foam.

5. A camera according to any one of claims 1 to 3, characterized in that the camera further comprises a connecting body (80), the connecting body (80) connecting the end plate and the mounting portion.

6. Camera according to claim 5, characterized in that the connecting body (80) is an adhesive glue arranged between the inner surface of the end plate and the mounting surface.

7. The camera of claim 5, wherein the sealing body (70) surrounds a periphery of the connecting body (80).

8. The camera according to claim 1, wherein the light-emitting surfaces are disposed parallel to the image sensor opposite thereto, and one of the light-emitting surfaces is perpendicular to an axial line of the lens (20).

9. The camera of claim 8, wherein the angle between the two end plates is 45-135 degrees.