CN216391166U - Camera module and electronic equipment - Google Patents
Camera module and electronic equipment Download PDFInfo
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- CN216391166U CN216391166U CN202122592012.6U CN202122592012U CN216391166U CN 216391166 U CN216391166 U CN 216391166U CN 202122592012 U CN202122592012 U CN 202122592012U CN 216391166 U CN216391166 U CN 216391166U
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- tunable filter
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Abstract
The utility model discloses a camera module and electronic equipment, wherein the camera module comprises a photosensitive chip, a tunable filter and a lens, wherein the photosensitive chip and the tunable filter are respectively positioned on two sides of the lens; the tunable filter is used for controlling the light incoming wavelength of light rays so as to obtain target spectrums of N different wave bands, wherein N is a natural number greater than 1; the photosensitive chip is used for recording N pieces of imaging information of the target scenery by the lens under the N pieces of target spectrums. The utility model discloses a camera module and electronic equipment, which are used for solving the technical problem that the camera module in the prior art is large in size and cannot be applied to miniature equipment.
Description
Technical Field
The utility model relates to the technical field of camera shooting, in particular to a camera module and electronic equipment.
Background
At present, multispectral cameras are widely applied in the fields of agriculture, biomedicine, military, atmospheric remote sensing and the like. However, the existing multispectral camera module is large in size and cannot be applied to micro-terminal equipment, or a lens needs to be customized specially, so that the universality of the lens is reduced, most multispectral camera module components are too many, and the cost of applying the multispectral camera module components to the micro-terminal equipment is also high.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a camera module and electronic equipment, has solved among the prior art camera module volume big partially, can't use the technical problem on the small-size mobile device, has realized reducing camera module volume to use the camera module to the technological effect on little terminal equipment.
In a first aspect, the present application provides a camera module, which includes a photosensitive chip, a tunable filter, and a lens, where the photosensitive chip and the tunable filter are respectively located on two sides of the lens;
the tunable filter is used for controlling the light incoming wavelength of light rays so as to obtain target spectrums of N different wave bands, wherein N is a natural number greater than 1;
the photosensitive chip is used for recording N pieces of imaging information of the lens to the target scenery under N pieces of target spectrums.
Optionally, the camera module further includes a first optical filter and a second optical filter;
the first optical filter is positioned on the light inlet side of the tunable filter and used for filtering light rays in a useless wave band;
the second optical filter is positioned between the lens and the photosensitive chip and is used for filtering light rays generated by diffraction of the tunable filter.
Optionally, the first optical filter and the second optical filter are respectively fixed on the surface of the tunable filter and the surface of the lens through optical glue;
or the first optical filter and the second optical filter are respectively integrated on the surface of the tunable filter and the surface of the lens in a film coating mode.
Optionally, the tunable filter allows light with a wavelength band of 700-940 nm to pass through;
the number of the target spectrums is 3, and the wave bands of the target spectrums are respectively 725-850 nm, 850-900 nm and 900-940 nm.
Optionally, the tunable filter is a fabry perot tunable filter.
Optionally, the camera module further includes:
the tunable filter base is fixed with the tunable filter and the first optical filter through glue;
one end of the flexible circuit board is connected with the tunable filter in a welding mode;
the lens base is fixed with the lens through glue;
the flexible circuit board is connected with the other end of the flexible circuit board and is electrically connected with the tunable filter through the flexible circuit board;
and the connector is connected with the rigid-flexible circuit board.
Optionally, the tunable filter includes an upper layer of glass, a lower layer of glass, and a tunable filter located between the upper layer of glass and the lower layer of glass, and the upper layer of glass, the lower layer of glass, and the tunable filter are fixedly connected by glue.
Optionally, the lens is a near-infrared lens, and the photosensitive chip is a CMOS chip.
Optionally, the camera module is a mobile phone camera module.
In a second aspect, an electronic device is provided, which includes the camera module provided in the first aspect.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the tunable filter is arranged on the light inlet side of the camera module lens, and the light inlet wavelength of light is controlled through the tunable filter, so that multispectral shooting is realized; due to the adoption of the tunable filter, the size of the camera module can be greatly reduced, so that the camera module can be applied to the micro-terminal equipment.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIGS. 1-3 are schematic structural diagrams of a multispectral camera module in the prior art;
fig. 4 is a schematic structural diagram of a multispectral camera module in an embodiment of the present application;
FIG. 5 is a schematic diagram of the structure of FIG. 4 in one embodiment;
FIG. 6 is a schematic diagram of the structure of FIG. 4 in one embodiment;
fig. 7 is a schematic diagram of an electronic device in an embodiment of the present application.
Detailed Description
The embodiment of the application provides a camera module, and the technical problem that the camera module in the prior art is large in size and cannot be applied to non-terminal equipment is solved.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
the camera module comprises a photosensitive chip, a tunable filter and a lens, wherein the photosensitive chip and the tunable filter are respectively positioned on two sides of the lens; the tunable filter is used for controlling the light incoming wavelength of light rays so as to obtain target spectrums of N different wave bands, wherein N is a natural number greater than 1; the photosensitive chip is used for recording N pieces of imaging information of the lens to the target scenery under N pieces of target spectrums.
There are three main categories of multispectral cameras available today: the first type is a multi-lens type multispectral camera, as shown in fig. 1, where lenses are lenses, and IR filters are filters, and the camera generally has 4-9 lenses, each lens has a filter, and allows light of a narrow spectrum to pass through, and multiple lenses capture the same scene at the same time, and record image information of several different spectral bands with one film; the second type is a multi-phase type multi-spectral camera, as shown in fig. 2, which is the same as fig. 1, wherein the lens is a lens, the IR filter is an optical filter, and the camera is composed of several cameras, wherein each camera has a different optical filter, respectively receives information on different spectral bands of a scene, and simultaneously shoots the same scene, and each camera obtains a set of films with specific spectral bands; the third type is a beam splitting type multispectral camera, as shown in fig. 3, in which a plurality of prism beam splitters are used between a lens (lens) and a plurality of sets of films to split light from a scene into light beams of a plurality of wavelength bands, and the sets of films are used to record optical information of each wavelength band.
On one hand, the three multispectral cameras have a plurality of components, and the cost is high when the multispectral cameras are applied to micro terminal equipment; on the other hand, the module is too big, can't adapt to little terminal equipment limited assembly space. But it is inevitable trend to be applied to little terminal equipment with multispectral camera, therefore this application utility model people provides this application scheme to reduce the volume of multispectral camera module, in order to apply to little terminal equipment with multispectral camera module with lower cost.
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In a first aspect, an embodiment of the present application provides a camera module, as shown in fig. 4, including:
the tunable filter comprises a photosensitive chip 401, a tunable filter 402 and a lens 403, wherein the photosensitive chip 401 and the tunable filter 402 are respectively located on two sides of the lens 403; the tunable filter 402 is configured to control an incoming wavelength of light to obtain N target spectra of different bands, where N is a natural number greater than 1; the photosensitive chip 401 is configured to record N pieces of imaging information of the target scene by the lens 403 under N target spectra.
In a specific embodiment, the tunable filter 402 is a fabry perot tunable filter, and specifically, the fabry perot tunable filter is manufactured based on a Micro-Electro-Mechanical System (MEMS), has a chip-scale size, and can greatly reduce the volume of the multispectral camera module. In a specific implementation process, the width of the optical slit of the tunable filter 402 can be adjusted by changing the driving voltage of the tunable filter 402, so that the central transmission wavelength of the tunable filter 402 can be controlled, and target spectra of N different bands are obtained, where N is a natural number greater than 1. Wherein the optical slit is an optical channel between two parallel plane mirrors of the tunable filter. The upper mirror and the lower mirror are oppositely arranged, and an air gap, namely an optical gap, is arranged between the upper mirror and the lower mirror. When voltage is applied to the lens, electrostatic force is generated to change the distance between the air gaps, so that the transmittance of different wavelengths is changed, and different spectral images are obtained. For example, in a multispectral camera module using a near-infrared lens, the tunable filter allows light with a wavelength of 700-940 nm to pass through, and the target spectra are 3, specifically, 725-850 nm, 850-900 nm, and 900-940 nm, respectively. Of course, in a specific implementation process, tunable filters of other different bands, such as ultraviolet bands, may also be manufactured according to different application fields, and the application is not limited thereto.
In another embodiment, the tunable filter may also be implemented based on the michael two-beam interference spectroscopy principle or the convex grating spectral imaging principle, which is not limited in this application. In addition, in the specific implementation process, because a traditional optical splitter is not adopted, the lens 403 is not required to be specially customized to be matched with the optical splitter, and only a conventional near-infrared lens is adopted, so that the manufacturing cost of the camera module can be effectively reduced. The photosensitive chip 401 may be a CMOS (Complementary Metal-Oxide Semiconductor) chip to further reduce the volume of the multispectral camera, and the power consumption of the CMOS chip is lower than that of a CCD (Charge Coupled Device).
In a specific embodiment, the multispectral camera module provided in the embodiment of the present application further includes a first filter 404 and a second filter 405, as shown in fig. 5. The first filter 404 is located on the light-incoming side of the tunable filter 402 and is used for filtering the light of the unwanted wavelength band entering from the outside, so as to ensure that the tunable filter 402 operates in an ideal environment without excessive stray light interference. The second optical filter 405 is located between the photosensitive chip 401 and the lens 403, and is configured to filter the light generated by diffraction of the tunable filter 402, that is, remove light with an unwanted wavelength, and reduce stray light, thereby reducing double images and further ensuring imaging quality. In a specific implementation, the first filter 404 and the second filter 405 may be fixed on the surface of the tunable filter 402 and the surface of the lens 403 by optical glue, respectively. The tunable filter 402 includes a light-transmitting effective region 4021 located in the middle region and a peripheral non-effective region 4022 located in the peripheral region, see fig. 6. In this embodiment, the tunable filter 402 includes an upper glass structure, a lower glass structure, and a tunable filter fixed between the two glass structures, and the glass and the tunable filter can be clamped and fixed by glue. Or, the first optical filter 404 and the second optical filter 405 may be integrated on the surface 402 of the tunable filter and the surface 403 of the lens 403 respectively by a film coating method, so as to improve the integration of the multispectral camera module, and make the multispectral camera module more compact and exquisite in structure.
In an optional embodiment, as shown in fig. 6, the camera module provided in this embodiment may further specifically include a tunable filter base 406, a flexible circuit board 407, a lens base 408, a rigid-flex circuit board 409, and a connector 410. The tunable filter base 406 and the lens base 408 may be fixed by gluing, the tunable filter base 406, the tunable filter 402 and the first optical filter 404 are fixed together by gluing, and one end of the flexible circuit board 407 is connected with the tunable filter 402 by welding, where the glue in this embodiment may be thermosetting glue or glue with other components. As shown in fig. 6, in order to accommodate the flexible circuit board 407 in the camera module, a through hole 4061 is formed on a side portion of the tunable filter base 406 in the embodiment, so that the flexible circuit board 407 can extend out of the tunable filter base 406, a first groove 4081 is formed on a side wall of the lens base 408 to accommodate the flexible circuit board 407, and a second groove 4082 is formed on the rigid-flexible circuit board 409 so that the other end of the flexible circuit board 407 is connected below the rigid-flexible circuit board 409. The lens base 408 and the lens 403 are fixed together by glue, and in a specific implementation process, the lens base 408 and the lens barrel are of an integrated structure, so as to further reduce the volume of the multispectral camera module. The flexible-rigid circuit board 409 is also connected with the tunable filter 402 by welding, so that the flexible circuit board 407 electrically connects the flexible-rigid circuit board 409 and the tunable filter 402, and the flexible-rigid circuit board 409 is also connected with the connector 410.
In a specific implementation process, the camera module can be a mobile phone camera module. The mobile phone camera shooting capability is one of important indexes for measuring the performance of a mobile phone, and with the development of science and technology, higher requirements are put forward on the volume, the resolution ratio and the like of a mobile phone camera module. The camera module that this application embodiment provided is small and have superior meticulous spectral resolution, can regard it as cell-phone camera module, be applied to aspects such as oily analysis of skin, vegetables pesticide residue analysis to improve people's quality of life.
In a second aspect, based on the same concept of the present invention, the present application further provides an electronic device 701, as shown in fig. 7, the electronic device 701 includes the camera module 702 provided in the first aspect.
In a specific implementation process, the electronic device 701 may be an electronic device with a camera function, such as a mobile phone, a laptop, a tablet, a monitor, and a detector, which is not limited in this application. It should be understood that the camera module provided by the present application is included in the scope of the present application.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
the tunable filter is arranged on the light inlet side of the camera module lens and used for controlling the light inlet wavelength of light rays, so that N target spectrums with different wave bands can be provided for the lens, and N is a natural number which is more than or equal to 1; the photosensitive chip records imaging information of the lens to the target scenery under the N target spectrums.
Due to the fact that multispectral shooting is achieved through the tunable filter, the size of the camera module can be greatly reduced, and the camera module can be applied to micro-terminal equipment.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.
It will be apparent to those skilled in the art that various changes and modifications may be made in 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 (10)
1. A camera module is characterized by comprising a photosensitive chip, a tunable filter and a lens, wherein the photosensitive chip and the tunable filter are respectively positioned on two sides of the lens;
the tunable filter is used for controlling the light incoming wavelength of light rays so as to obtain target spectrums of N different wave bands, wherein N is a natural number greater than 1;
the photosensitive chip is used for recording N pieces of imaging information of the lens to the target scenery under N pieces of target spectrums.
2. The camera module of claim 1, further comprising a first filter and a second filter;
the first optical filter is positioned on the light inlet side of the tunable filter and used for filtering light rays in a useless wave band;
the second optical filter is positioned between the lens and the photosensitive chip and is used for filtering light rays generated by diffraction of the tunable filter.
3. The camera module of claim 2,
the first optical filter and the second optical filter are respectively fixed on the surface of the tunable filter and the surface of the lens through optical glue;
or the first optical filter and the second optical filter are respectively integrated on the surface of the tunable filter and the surface of the lens in a film coating mode.
4. The camera module of claim 1,
the tunable filter allows light with a wave band of 700-940 nm to pass through;
the number of the target spectrums is 3, and the wave bands of the target spectrums are respectively 725-850 nm, 850-900 nm and 900-940 nm.
5. The camera module of claim 1, wherein the tunable filter is a fabry perot tunable filter.
6. The camera module of claim 2, further comprising:
the tunable filter base is fixed with the tunable filter and the first optical filter through glue;
one end of the flexible circuit board is connected with the tunable filter in a welding mode;
the lens base is fixed with the lens through glue;
the flexible circuit board is connected with the other end of the flexible circuit board and is electrically connected with the tunable filter through the flexible circuit board;
and the connector is connected with the rigid-flexible circuit board.
7. The camera module of claim 6, wherein the tunable filter comprises an upper glass layer, a lower glass layer, and a tunable filter disposed between the upper glass layer and the lower glass layer, and the upper glass layer, the lower glass layer, and the tunable filter are fixedly connected by glue.
8. The camera module of claim 1, wherein the lens is a near infrared lens and the photo sensor chip is a CMOS chip.
9. The camera module of claim 1, wherein the camera module is a cell phone camera module.
10. An electronic device, comprising the camera module according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122592012.6U CN216391166U (en) | 2021-10-27 | 2021-10-27 | Camera module and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122592012.6U CN216391166U (en) | 2021-10-27 | 2021-10-27 | Camera module and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216391166U true CN216391166U (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122592012.6U Active CN216391166U (en) | 2021-10-27 | 2021-10-27 | Camera module and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216391166U (en) |
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2021
- 2021-10-27 CN CN202122592012.6U patent/CN216391166U/en active Active
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