CN216647060U - Remove camera module of ghost image formation of image - Google Patents

Abstract

The application provides a camera module for removing double image imaging, which comprises a movable optical filter component, wherein the movable optical filter component comprises a double-optical-filter switcher, and an IR (infrared) optical filter and an AR (anti-reflection) optical filter positioned on one side of the IR optical filter are arranged in the double-optical-filter switcher; the spectrum coating of the AR filter is transmitted by single-pass infrared of 850nm or 940 nm. This application is in order to solve that the full transmission filter of prior art exists under the night mode, if have under the weak visible light condition, there is the blur ghost phenomenon, the problem of influence shooting picture quality, AR filter spectrum coating film is that single-pass infrared 850nm or 940nm sees through in this scheme, the infrared spectrum can be decided according to the spectrum of the supplementary infrared light source that the complete machine used, other wavelength spectrums cut off to see through, even there is visible light to exist simultaneously, can not influence the formation of image yet, do not cause the ghost image, and then improve and shoot the picture quality.

Description

Remove camera module of ghost image formation of image

Technical Field

The utility model relates to the technical field of cameras, in particular to a camera module for removing double image imaging.

Background

The camera can be divided into a digital camera and an analog camera, the digital camera can convert an analog video signal generated by a video acquisition device into a digital signal and then store the digital signal in a computer, the video signal captured by the analog camera can be converted into a digital mode through a specific video capture card and can be converted into the computer for application after being compressed, the digital camera can directly capture an image and then is transmitted into the computer through a serial interface, a parallel interface or a USB interface, the camera in the computer market basically takes the digital camera as a main part, the USB digital camera using a novel data transmission interface in the digital camera is a main part, most of the acquisition cards visible in the market are products, and besides, the digital camera is also a product matched with the video for use, but not a mainstream, due to the rapid popularization of the personal computer, the whole cost of the analog camera is high, the BSV liquid crystal splicing screen interface and other reasons cannot be met, and the transmission speed of the USB interface is far higher than the speed of a serial port and a parallel port, so that the digital camera and the analog camera of the market USB interface can be matched with a video acquisition card or a USB video acquisition card for use, and can be conveniently connected with a computer for use.

The monitoring camera is a semiconductor imaging device, have sensitivity height, strong light resistance, the distortion diminishes, small, longe-lived, advantages such as antidetonation, the monitoring camera is important equipment among the monitored control system, and the camera module is important part among the monitoring camera, present control class uses the camera module of portable optical filter subassembly, its optical filter spectrum is the scheme of full transmission basically, like the camera module that china utility model provided, the adoption is the full transmission light filter, the spectrum of this kind of optical filter is for following 400nm-1100nm basically and sees through, this kind of camera module has the blurred ghost phenomenon under the mode of night, if have under the weak visible light condition, influence and shoot the picture quality. Therefore, the camera module for removing the ghost image is improved.

Disclosure of Invention

The technical problem to be solved by the scheme is as follows: the existing camera assembly has the problem of double images in the using process.

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

remove the camera module of ghost image formation of image to improve above-mentioned problem.

The present application is specifically such that:

the optical filter comprises a movable optical filter component, wherein the movable optical filter component comprises a double-optical filter switcher, and an IR optical filter and an AR optical filter positioned on one side of the IR optical filter are arranged in the double-optical filter switcher;

the spectrum coating of the AR optical filter is transmitted by single-pass infrared of 850nm or 940 nm;

in order to solve the problem that the full-transmission optical filter in the prior art has a blurred double image phenomenon and affects the shooting image quality under a dark mode and weak visible light conditions, the AR optical filter in the scheme has a single-pass infrared spectrum coating of 850nm or 940nm, the infrared spectrum can be determined according to the spectrum of an auxiliary infrared light source used by the whole machine, other wavelength spectrums are cut off and transmitted, and even if visible light exists at the same time, the imaging cannot be affected, the double image cannot be caused, and the shooting image quality is improved.

As the preferable technical scheme, the imaging device further comprises an imaging assembly, and a heat dissipation assembly is arranged on the imaging assembly.

As the preferable technical scheme, the imaging assembly comprises a circuit board, and a base and a connector located on one side of the base are mounted on the top of the circuit board.

The top of the circuit board is also provided with a photosensitive chip, and the photosensitive chip is positioned in the base;

the bottom of the circuit board is provided with a control wafer, and the position of the control wafer corresponds to the position of the photosensitive chip;

the double-filter switcher is arranged in the middle of the base in an inserting mode, and the positions of the IR filter and the AR filter correspond to the position of the base.

As a preferred technical scheme of the application, the imaging assembly further comprises a lens arranged at the top of the base.

As a preferred technical scheme of the present application, the heat dissipation assembly includes a groove, and the groove is formed in the middle of the outer peripheral surface of the circuit board;

a heat dissipation part is embedded in the groove, the outer side of the heat dissipation part extends to the outer side of the groove, and a plurality of through holes are formed in the heat dissipation part;

this scheme can strengthen the intensity of circuit board through the radiating piece that sets up, and in the use radiating piece can in time distribute away the heat that the circuit board during operation produced, reduces the heat and piles up, through the through-hole that sets up, can improve the area of contact of radiating piece and air, and then improves the radiating effect.

Drawings

Fig. 1 is a schematic structural diagram of a camera module for ghost image removal imaging provided in the present application;

fig. 2 is a schematic partial cross-sectional structural view of a camera module for ghost image removal provided by the present application;

fig. 3 is a schematic top view structural diagram of an IR filter and an AR filter of the camera module for ghost image removal provided by the present application;

fig. 4 is a schematic structural diagram of a movable optical filter assembly of the camera module for ghost image removal provided by the present application;

fig. 5 is a schematic structural diagram of a heat dissipation member of the camera module for ghost image removal provided by the present application;

FIGS. 6a and 6b are graphs of the transmission spectra of IR and AR, respectively, of a conventional IRCUT device;

FIG. 7 is a schematic diagram of a spectral light path of a conventional IRCUT module when a camera module is switched to an AR mode in a night mode;

FIG. 8a is a graph of the transmission spectrum of an AR filter of the present application in the presence of both infrared and visible light;

FIG. 8b is a transmission spectrum of the AR filter of the present application in the presence of both IR spectrum and weak visible light.

The following are marked in the figure:

1. a movable filter assembly; 101. a dual-filter switcher; 102. an IR filter; 103. an AR filter;

2. an imaging assembly; 202. a lens; 203. a circuit board; 204. a photosensitive chip; 205. a control chip; 206. a connector; 207. a base; 208. mounting holes;

3. a heat dissipating component; 301. a groove; 302. a heat sink; 303. and a through hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.

Thus, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model as claimed, but is merely representative of some embodiments of the utility model. 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.

It should be noted that the embodiments of the present invention and the features and technical solutions thereof may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like refer to orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and such terms are used for convenience of description and simplification of the description, and do not refer to or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Example 1:

as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the present embodiment provides a camera module for ghost image removal, which includes a movable optical filter assembly 1, the movable optical filter assembly 1 includes a dual optical filter switch 101, an IR filter 102 mainly passes through the visible light spectrum, other wavelength spectral cut-off, suitable for use in scenes with sufficient illumination, commonly referred to as daytime mode, AR filter 103 suitable for use in scenes with no visible light or insufficient brightness environment, commonly referred to as night mode, in use, the switching of the IR filter 102 and the AR filter 103 can be accomplished by the dual filter switch 101, so that switching from the day mode to the night mode and from the night mode to the day mode can be accomplished, further, the dual-filter switch 101 is provided with an IR filter 102 and an AR filter 103 located at one side of the IR filter 102 in the dual-filter switch 101, which is suitable for the change of the usage environment;

as shown in fig. 2 and 4, as a preferred embodiment, in addition to the above-mentioned mode, the AR filter 103 is further coated with a single-pass infrared 850nm or 940nm transparent spectrum, and other wavelength spectrums can be cut off and transmitted by this arrangement, so that even if there is visible light existing at the same time during use, the imaging of the camera module for removing ghost image is not affected, and no ghost image is caused, thereby further improving the overall shooting image quality, satisfying the user's requirement for high image quality, and also improving the commercial value of the camera module for removing ghost image.

Example 2:

the scheme of example 1 is further described below in conjunction with specific working modes, which are described in detail below:

as shown in fig. 1 and fig. 2, as a preferred embodiment, on the basis of the above manner, further, the imaging module 2 is further included, the imaging module 2 can be used for supporting the movable optical filter assembly 1, and can also play a certain protection role for the imaging module 2, the imaging module 2 is provided with the heat dissipation module 3, the heat dissipation module 3 can improve the heat dissipation effect of the imaging module 2 and the movable optical filter assembly 1 while increasing the strength of the imaging module 2, the failure of the imaging module 2 and the movable optical filter assembly 1 due to heat accumulation during the use process is reduced, and further the service life of the whole camera module for removing the ghost image is prolonged, so that the competitiveness of the camera module for removing the ghost image in the market is improved.

As shown in fig. 1 and fig. 2, as a preferred embodiment, in addition to the above-mentioned manner, further, the imaging assembly 2 includes a circuit board 203, four mounting holes 208 are further formed on the circuit board 203, the mounting holes 208 are round holes with smooth inner walls, in the using process, the round holes are more convenient for the screws to pass through and can be better matched with the screws, the four mounting holes 208 are respectively close to the four corner positions of the circuit board 203, in the use process, the camera module for removing double images can be installed and fixed by screws penetrating through the installation holes 208, the top of the circuit board 203 is provided with a base 207 and a connector 206 positioned on one side of the base 207, the connector 206 is used for connecting a wire row for transmitting data and providing electric energy, therefore, the transmission of signals between the circuit board 203 and the monitoring system is realized, and the pictures shot by the camera module can be transmitted to the monitoring system.

As shown in fig. 2, as a preferred embodiment, on the basis of the foregoing manner, further, a light sensing chip 204 is further disposed on the top of the circuit board 203, the light sensing chip 204 captures light passing through the lens 202 and converts the light into an electronic signal, and the light sensing chip 204 is located in the base 207, so that the base 207 can protect the light sensing chip 204, reduce interference of external factors on the operation of the light sensing chip 204, and improve the service life of the light sensing chip 204.

As shown in fig. 2, as a preferred embodiment, on the basis of the above manner, further, the bottom of the circuit board 203 is provided with a control wafer 205, the control wafer 205 is used for controlling and coordinating the operation of the components of the camera module for deghosting, and the position of the control wafer 205 corresponds to the position of the photosensitive chip 204.

As shown in fig. 1 and fig. 2, as a preferred embodiment, in addition to the above manner, the dual-filter switch 101 is inserted into the middle of the base 207, the dual-filter switch 101 is fixedly connected to the base 207, the base 207 can protect the IR filter 102 and the AR filter 103, and the positions of the IR filter 102 and the AR filter 103 correspond to the position of the base 207.

As shown in fig. 1 and fig. 2, as a preferred embodiment, on the basis of the above manner, further, the imaging assembly 2 further includes a lens 202 disposed on the top of the base 207, the lens 202 is used for light to enter, and can achieve the function of blocking outside dust from entering, and can play a role of protecting the rest of the components in the imaging assembly 2, and reduce the interference of outside adverse factors such as dust and moisture.

As shown in fig. 2, as a preferred embodiment, based on the above manner, further, the heat dissipation assembly 3 includes a groove 301, the arrangement of the groove 301 can improve the stability of the connection between the heat dissipation member 302 and the circuit board 203, the groove 301 is opened in the middle of the outer peripheral surface of the circuit board 203, the groove 301 is specifically configured in a frame shape, and the frame-shaped groove 301 can be adapted to the circuit board 203.

As shown in fig. 1, 2 and 5, as a preferred embodiment, on the basis of the above manner, further, a heat dissipation member 302 is embedded in the groove 301, the heat dissipation member 302 is also frame-shaped, the heat dissipation member 302 is made of materials including, but not limited to, aluminum, copper and steel, the outer side of the heat dissipation member 302 extends to the outer side of the groove 301, the strength of the circuit board 203 can be enhanced through the heat dissipation member 302, and the heat generated when the circuit board 203 works can be timely dissipated by the heat dissipation member 302 in the using process, so as to reduce heat accumulation, the contact area between the heat dissipation member 302 and air can be increased through the arranged through holes 303, so that the heat dissipation effect is increased, and the heat dissipation member 302 is provided with a plurality of through holes 303.

Example 3:

the schemes of example 1 and example 2 are further described below in conjunction with specific working examples, which are described in detail below:

commercially available IRCUT components have IR and AR spectral specifications generally as follows:

IR: is a full color filter, mainly visible light passes through, as shown in fig. 6 a;

AR: for a full transmission filter, both the main visible and infrared wavelengths can pass, as shown in fig. 6 b.

Under the night mode, when the camera module switches to the AR mode, can start infrared light source auxiliary imaging, if there is visible light when existing simultaneously this moment, because the refractive index of different wavelength spectrums is different, visible light and infrared light can divide into two tunnel imaging paths and reach sensitization chip 204 when AR light filter 103, so sensitization chip 204 receives the different spectrum light paths of same object image, cause the fuzzy ghost phenomenon to take place, influence the formation of image effect, as shown in figure 7.

In order to solve the influence of visible light or weak visible light on imaging image quality fuzzy ghosting in a night mode, the scheme optimizes the spectrum specification of the AR so as to solve the problem of imaging fuzzy ghosting, and mainly comprises the following steps:

firstly, the spectrum coating of the AR filter 103 is transmitted by single-pass infrared of 850nm or 940nm, the infrared spectrum can be determined according to the spectrum of an auxiliary infrared light source used by the whole machine, the spectrum of other wavelengths is cut off and transmitted, even if visible light exists at the same time, the imaging cannot be influenced, no double image is caused, the spectrum is as shown in figure 8a, the spectrum of the AR coating is transmitted by 850nm or 940nm, and the other wavelengths are cut off;

secondly, the transmittance of the spectrum of the weak visible light part is used for weakening the imaging effect of the visible light, as shown in fig. 8b, the transmittance of the spectrum of the visible light wave band is reduced in a region 400 and 570 in the figure;

by optimizing the coating film of the approximate AR spectrum, the problem of camera imaging fuzzy ghost caused by the simultaneous existence of infrared spectrum and visible light source in the AR mode can be solved.

Specifically, this remove camera module of ghost image formation of image when during operation/use: in the daytime, the dual-filter switch 101 controls the movement of the IR filter 102 and the AR filter 103, so that the position of the IR filter 102 corresponds to the light sensing chip 204, and in the nighttime, the dual-filter switch 101 controls the movement of the IR filter 102 and the AR filter 103, so that the position of the AR filter 103 corresponds to the light sensing chip 204, light enters from the lens 202, passes through the IR filter 102 or the AR filter 103 and then irradiates on the light sensing chip 204, and the light sensing chip 204 converts captured light into an electronic signal.

In the use, in order to solve the problem that the full transmission filter in the prior art has a fuzzy ghost phenomenon and affects the shooting image quality under a night mode and weak visible light conditions, the AR filter spectrum coating in the scheme is single-pass infrared 850nm or 940nm transmission, the infrared spectrum can be determined according to the spectrum of an auxiliary infrared light source used by the whole machine, other wavelength spectrums are cut off and transmitted, and even if visible light exists at the same time, the imaging cannot be affected, the ghost is not caused, and the shooting image quality is further improved.

The above embodiments are only used for illustrating the utility model and not for limiting the technical solutions described in the utility model, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above embodiments, and therefore, any modification or equivalent replacement of the present invention is made; all such modifications and variations are intended to be included herein within the scope of this disclosure and the appended claims.

Claims (10)

1. The camera module for removing ghost image imaging is characterized by comprising a movable optical filter assembly (1), wherein the movable optical filter assembly (1) comprises a double-optical-filter switcher (101), and an IR optical filter (102) and an AR optical filter (103) located on one side of the IR optical filter (102) are arranged in the double-optical-filter switcher (101).

2. The camera module for ghost image elimination as set forth in claim 1, wherein the AR filter (103) is spectrally coated with a single pass infrared 850nm or 940nm transmission.

3. The camera module for ghost image elimination according to claim 1, further comprising an imaging component (2), wherein a heat dissipation component (3) is disposed on the imaging component (2).

4. A deghosting imaging camera module according to claim 3, characterized in that the imaging assembly (2) comprises a circuit board (203), the top of the circuit board (203) being mounted with a base (207) and a connector (206) on one side of the base (207).

5. A camera module for deghosting imaging according to claim 4, characterized in that the top of the circuit board (203) is further provided with a photosensitive chip (204), the photosensitive chip (204) being located in a base (207).

6. A camera module for deghosting imaging according to claim 5, characterized in that the bottom of the circuit board (203) is provided with a control wafer (205), the position of the control wafer (205) corresponding to the position of the photosensitive chip (204).

7. The camera module for deghosting images as claimed in claim 6, wherein the dual filter switcher (101) is inserted in the middle of the base (207), and the positions of the IR filter (102) and the AR filter (103) correspond to the position of the base (207).

8. A deghosting imaging camera module according to claim 3 or 7, characterized in that the imaging assembly (2) further comprises a lens (202) arranged on top of the base (207).

9. Camera module of deghosting imaging according to claim 4, characterized in that the heat sink assembly (3) comprises a groove (301), the groove (301) opening in the middle of the outer circumference of the circuit board (203).

10. A camera module for ghost image elimination according to claim 9, wherein a heat dissipation member (302) is embedded in the groove (301), an outer side of the heat dissipation member (302) extends to an outer side of the groove (301), and a plurality of through holes (303) are formed in the heat dissipation member (302).

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