CN215934943U - Camera module and electronic equipment - Google Patents
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- CN215934943U CN215934943U CN202121647636.7U CN202121647636U CN215934943U CN 215934943 U CN215934943 U CN 215934943U CN 202121647636 U CN202121647636 U CN 202121647636U CN 215934943 U CN215934943 U CN 215934943U
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Abstract
The embodiment of the application provides a camera module and electronic equipment, and this electronic equipment includes camera module, camera module are including the parfocal lens, the optical filtering unit, photosensitive element and the printed circuit board that set up in order. The light filtering unit comprises a first light filter, a second light filter and an electrode layer, the electrode layer is electrically connected to external voltage, and the photosensitive element is attached to the printed circuit board and is electrically connected with the printed circuit board. The first optical filter is used for filtering infrared light, the second optical filter is used for filtering visible light, and the filtering rate of the first optical filter and the second optical filter to the infrared light and the visible light can be changed along with the change of the voltage input to the electrode layer. The application provides a camera module realizes controlling the luminousness of visible light and infrared light simultaneously in a camera module, promotes the imaging quality, reduces manufacturing cost.
Description
Technical Field
The application relates to the technical field of electronic equipment, in particular to a camera module and electronic equipment.
Background
With the advent of the media age, more and more users like to record or share the moment of life with others at any time by means of photographing or videoing, which means that people expect to photograph photographic works of higher quality in both bright and dark environments. Most of the traditional electronic products have the function of imaging in dark environment. However, the camera module of the conventional electronic product can only image visible light or infrared light, so that the camera module can only ensure high imaging quality in a specific scene, and the imaging quality of works shot in other scenes is low.
In order to make the electronic product all possess higher image quality in all scenes, can realize through the combination with visible light camera module and infrared camera module, the camera module that obtains so the combination can be controlled the luminousness of visible light and infrared light simultaneously, is applicable to the shooting of all scenes, and its picture of shooing has higher image quality. However, the increase of the camera module means that the number of required internal components of the camera module is increased, and the manufacturing cost is increased.
SUMMERY OF THE UTILITY MODEL
The application provides a camera module and electronic equipment for the luminousness to visible light and infrared light is controlled simultaneously in a camera module, promotes the imaging quality, reduces manufacturing cost.
In a first aspect, an embodiment of the present application provides a camera module, including: the device comprises a parfocal lens, a filtering unit, a photosensitive element and a printed circuit board;
the focusing lens comprises a light inlet side and a light outlet side and is used for focusing and imaging ambient light. The light filtering unit, the photosensitive element and the printed circuit board are sequentially arranged on one side of the light emitting side of the parfocal lens;
the photosensitive element is arranged on the printed circuit board, the photosensitive element is used for receiving optical signals passing through the filtering unit, converting the optical signals into electrical signals and transmitting the electrical signals, and the printed circuit board is used for receiving the electrical signals and supplying power to the photosensitive element;
the light filtering unit comprises a fixed frame, a first light filter, a second light filter and an electrode layer; the electrode layer is fixed on the fixing frame, the electrode layer is electrically connected to an external voltage, the voltage is variable voltage, and the first optical filter and the second optical filter are arranged between the electrode layers;
the first optical filter is used for filtering infrared light, and the second optical filter is used for filtering visible light.
When voltage is applied to the electrode layer, a first light beam penetrating out of the parfocal lens passes through the first optical filter to filter infrared light, a second light beam is output from the first optical filter, the second light beam passes through the second optical filter to filter visible light, a third light beam is output from the second optical filter, and the third light beam is emitted to the photosensitive element.
In a second aspect, an embodiment of the present application further provides an electronic device, which includes a housing, a camera module, and a motherboard;
the camera module and the mainboard are located in the shell, and the camera module is electrically connected with the mainboard.
This electronic equipment is when shooing formation of image or discernment formation of image, can control the luminousness of visible light and infrared light simultaneously, promotes the formation of image quality.
According to the technical scheme, the camera module and the electronic equipment are provided, and the electronic equipment comprises the camera module. The camera module comprises a parfocal lens, a filtering unit, a photosensitive element and a printed circuit board which are sequentially arranged; the light filtering unit comprises a fixed frame, a first light filter, a second light filter and an electrode layer, wherein the first light filter, the second light filter and the electrode layer are fixed on the fixed frame; the first optical filter and the second optical filter are located in the electrode layer. The photosensitive element is positioned on the printed circuit board and electrically connected with the printed circuit board.
The first optical filter is used for filtering infrared light, and the second optical filter is used for filtering visible light. The light transmittance of the first optical filter and the second optical filter to visible light and infrared light can be controlled by regulating and controlling the voltage introduced into the electrode layer, so that the shot picture has higher imaging quality. And just can realize the debugging to infrared light and visible light luminousness simultaneously in a camera module, compare with the current technique that needs to reach the same effect and adopt infrared camera module and visible light camera module combination, the cost is cheaper.
Drawings
Fig. 1 is a schematic plan view of a camera module according to the present application;
fig. 2 is a side view of a camera module according to the present application;
FIG. 3 is a schematic structural diagram of a filter unit according to the present application;
FIG. 4 is a schematic structural view of the fixing frame of the present application;
FIG. 5 is a schematic cross-sectional view of a filter unit according to the present application;
FIG. 6 is a schematic view of a position structure of a first electrode layer in an embodiment of the present disclosure;
FIG. 7 is a schematic view of a position structure of a third electrode layer in an embodiment of the present application;
FIG. 8 is a diagram of an optical path of an embodiment of the present application for visible light imaging by simply filtering infrared light;
FIG. 9 is a light path diagram of the embodiment of the present application when imaging in a dark environment;
FIG. 10 is a diagram of an optical path of an embodiment of the present application for infrared imaging by simply filtering visible light;
FIG. 11 is a diagram of an optical path when privacy protection is performed according to an embodiment of the present application;
FIG. 12 is a schematic structural diagram of a spacer layer according to an embodiment of the present disclosure;
FIG. 13 is a schematic structural diagram of a spacer layer according to an embodiment of the present disclosure;
fig. 14 is a schematic hardware structure diagram of a terminal device provided in an embodiment of the present application;
fig. 15 is a schematic structural diagram of an electronic device according to the present application.
Illustration of the drawings:
wherein, 1-parfocal lens; 2-a light filtering unit; 3-a photosensitive element; 4-a printed circuit board; 5-a shell; 6-a camera module; 7-a main board; 11-light input side; 12-light emitting side; 21-a fixing frame; 22-a first filter; 23-a second optical filter; 24-an electrode layer; 25-a first insulating protection layer; 26-a second insulating protective layer; 241-a first electrode layer; 242 — a second electrode layer; 243-third electrode layer; 244-fourth electrode layer; 245-an isolation layer; 51-lens hole.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.
In some embodiments, the camera module is an image input device, and is an electronic device essential for image capture. After the camera module collects images through the lens of the camera module, the images are processed and converted into digital signals which can be identified by the terminal.
To achieve the above functions, the camera module may include an imaging component and an optical signal conversion component. The imaging component may include a focusing lens, a filter, and other lens elements related to focusing and imaging. These lens elements are typically nested in a holder 21 having a cavity structure. By means of a plurality of lens elements in the holder 21, focused imaging of ambient light can be achieved.
The optical signal conversion assembly may include optical sensing elements 3, printed circuit boards 4, and other electrical components related to optical-to-electrical signal conversion and communication functions. The light-sensing element 3 may be connected to the printed circuit board 4 by a signal line. The photoelectric signal conversion is realized by the photosensitive element 3 and the electric signal is transmitted to other elements by the printed circuit board 4. For example, the photosensitive element includes a plurality of photosensitive pixel blocks, each photosensitive pixel block corresponds to three photosensitive units, red, green and blue, after reaching the photosensitive element, the optical signal further enters the corresponding photosensitive unit, the photosensitive units are substantially photodiodes, the optical signal with different intensities can be converted into electrical signals with different intensities, and the electrical signals are amplified by the printed circuit board 4 and then transmitted to other elements.
Different camera modules, the image quality is different, and present common camera module has infrared camera module, ordinary camera module and two optical filtering camera modules. The infrared camera module can only image infrared light, and the night imaging effect is good; the common camera module can only image visible light, and has a good imaging effect at a bright position; the double-filtering camera module can image infrared light and visible light simultaneously and is suitable for various shooting scenes. Therefore, the dual-filter camera module is more and more popular for users.
At present, there are two common dual-filter camera modules. One is to combine an independent infrared camera module with an independent visible light camera module. The infrared camera module generally comprises a focusing lens, an infrared filter and a photoelectric signal conversion assembly, so that the infrared camera module only images infrared light; the visible light camera module generally comprises a focusing lens, a visible light filter and a photoelectric signal conversion assembly, and therefore the visible light camera module only images for visible light. Adopt two above-mentioned camera module superimposed structures, can realize forming images simultaneously infrared light and visible light. However, the camera module needs more elements than a single camera module, and the cost is high. The other is to arrange a mechanical device in the camera module, and realize switching modes through the mechanical device, namely adding or reducing the filtering component in the camera module. However, the camera module needs enough internal space to arrange a mechanical device, is commonly used for a monitor camera, and is not suitable for portable electronic products such as mobile phones.
In order to realize the formation of image to visible light and infrared light simultaneously in a camera module, promote formation of image quality, reduce manufacturing cost, the partial embodiment of this application provides a camera module, and figure 1 is the planar structure schematic diagram of this camera module. As shown in fig. 1, the camera module provided by the present application includes a zoom lens 1, a filter unit 2, a photosensitive element 3, and a printed circuit board 4.
The parfocal lens 1 is used for focusing and imaging ambient light, and the parfocal lens 1 is used for imaging infrared light and visible light on the same focal plane. Fig. 2 is a side view of the camera module, and as can be seen from fig. 2, the parfocal lens 1 includes a light-entering side 11 and a light-exiting side 12, and light enters from the light-entering side 11 and exits from the light-exiting side 12.
The light filtering unit 2, the photosensitive element 3 and the printed circuit board 4 are sequentially arranged on the light emergent side 12 side of the parfocal lens 1. The filter unit 2 is used to selectively filter visible light and infrared light. The photosensitive element 3 is attached to the printed circuit board 4 and electrically connected to the printed circuit board 4. The light sensing element 3 is used for converting optical signals into electrical signals and transmitting the electrical signals, and the printed circuit board 4 is configured to receive the electrical signals and supply power to the light sensing element 3.
Fig. 3 is a schematic structural diagram of the filter unit according to the present application. As shown in fig. 3, the filter unit 2 includes a fixing frame 21, a first filter 22, a second filter 23, and an electrode layer 24. Fig. 4 is a schematic structural view of the fixing frame of the present application. As shown in fig. 4, the fixing frame 21 has a ring-shaped structure, and a hollow cavity is formed inside the fixing frame.
In some embodiments, the fixing frame 21 may be a cylinder, and a hollow cavity is formed inside. Alternatively, the fixing frame 21 may be a cube or a rectangular parallelepiped, and a hollow cavity is formed inside. It will be appreciated that the dimensions of the cavity should match the dimensions of the first optical filter 22, the second optical filter 23 and the electrode layer 24, so as to accommodate the first optical filter 22, the second optical filter 23 and the electrode layer 24 within the cavity.
Fig. 5 is a schematic cross-sectional structure diagram of the filter unit of the present application; as can be seen from fig. 5, the first optical filter 22, the second optical filter 23 and the electrode layer 24 are all located in the cavity; wherein the first filter 22 and the second filter 23 are disposed in the electrode layer 24.
In some embodiments, the inner wall of the fixing frame 21 may be provided with a groove, and the first filter 22, the second filter 23 and the electrode layer 24 are all clamped in the groove. Specifically, the circumferential side walls of the first filter 22, the second filter 23, and the electrode layer 24 are snapped in the grooves so that the circumferential side walls of the first filter 22, the second filter 23, and the electrode layer 24 are in contact with the inner walls of the grooves.
In some embodiments, the first filter 22, the second filter 23 and the electrode layer 24 may be adhered in the fixing frame 21 and fixedly connected to the fixing frame 21. Specifically, the circumferential side walls of the first filter 22, the second filter 23, and the electrode layer 24 are bonded to the inner wall of the fixing frame 21, and are fixedly connected to the fixing frame 21.
Further, the first filter 22 and the second filter 23 are made of different electrochromic materials, respectively. The electrochromic material can generate electrochemical oxidation-reduction reaction under the action of an external electric field, the color of the electrochromic material is changed along with the transfer of ions in the electrochromic material, and the absorption condition of light is changed accordingly. Therefore, the electrochromic material has adjustability of light transmission under the action of an electric field.
In some embodiments, the first filter 22 is made of a material whose infrared absorption spectrum changes under the action of an electric field, such as a titanium oxide (TiO) material, a nickel oxide (NiO) material, a nanocrystalline material, and the like. By controlling the intensity of the electric field applied to the first filter 22, the transmittance of the first filter 22 to infrared light can be further controlled.
More specifically, when no electric field is applied to the first filter 22, the infrared light is completely absorbed by the first filter 22 and cannot pass through the first filter 22; when an electric field is applied to the first filter 22, the absorption rate of the infrared light by the first filter 22 gradually decreases with the increase of the applied electric field strength until the absorption rate of the infrared light by the first filter 22 decreases to zero, and at this time, the infrared light is not absorbed by the first filter 22 and can pass through the first filter 22.
In some embodiments, the intrinsic factors affecting the transmittance of the first optical filter 22 to infrared light at least include the material of the first optical filter 22, and in specific applications, the first optical filter 22 may be designed according to the prior art, which is not described in detail herein.
In some embodiments, the material used for the second filter 23 changes its visible light absorption spectrum under the action of the electric field. Such as tungsten trioxide (WO)3) Titanium Trioxide (TiO)3) And vanadium dioxide (VO)2) And the like. By controlling the intensity of the electric field applied to the second filter 23, the transmittance of the second filter 23 to visible light can be further controlled.
More specifically, when no electric field is applied to the second filter 23, the second filter 23 exhibits non-absorbability to visible light, and at this time, the visible light can completely pass through the second filter 23; when an electric field is applied to the second filter 23, the absorptivity of the second filter 23 to visible light gradually increases as the applied electric field increases until the second filter 23 can completely absorb the visible light, at which time the visible light cannot pass through the second filter 23.
In some embodiments, the intrinsic factors affecting the transmittance of the second optical filter 23 to visible light at least include the material of the second optical filter 23, and in specific applications, the second optical filter 23 may be designed with reference to the prior art, which is not described in detail herein.
In some embodiments, the electrode layer 24 includes a first electrode layer 241, a second electrode layer 242, and a third electrode layer 243.
In some embodiments, the first filter 22 is located between the first electrode layer 241 and the second electrode layer 242, and it is required that two side surfaces of the first filter 22 are respectively in contact with the surfaces of the first electrode layer 241 and the second electrode layer 242, for example, the first electrode layer 241 and the second electrode layer 242 may be adhered to two sides of the first filter 22, or the first electrode layer 241 and the second electrode layer 242 may detachably cover two sides of the first filter 22.
In some embodiments, the second filter 23 is located between the second electrode layer 242 and the third electrode layer 243, and it is required that two side surfaces of the second filter 23 are respectively in contact with the surfaces of the second electrode layer 242 and the third electrode layer 243, for example, the second electrode layer 242 and the third electrode layer 243 may be adhered to two sides of the second filter 23, or the second electrode layer 242 and the third electrode layer 243 may detachably cover two sides of the second filter 23.
In some embodiments, the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243 may be supplied with a variable voltage by connecting the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243 to an external power source, respectively.
In some embodiments, an external power source may provide voltages to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243 through one or more control chips, respectively. The chip is controlled and the voltage values applied to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243 can be controlled. Alternatively, the number of the external power sources may be multiple, and the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243 are respectively supplied with voltages through one or more control chips.
In some embodiments, the camera module is applied to the electronic device 100, the external power source may also be a battery in the electronic device 100, and the battery is connected to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243 through the control circuit to provide voltage to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243, and the value of the voltage can be regulated.
Further, if the voltage values of the voltages applied to the first electrode layer 241 and the second electrode layer 242 are different, a potential difference is formed between the first electrode layer 241 and the second electrode layer 242, so as to generate an electric field, at this time, the first optical filter 22 located between the first electrode layer 241 and the second electrode layer 242 generates an oxidation-reduction reaction under the effect of the electric field, and the absorption spectrum of the infrared light by the first optical filter 22 changes along with the transfer of ions therein, that is, the light transmittance of the first optical filter 22 to the infrared light changes. For example, when the potential difference between the first electrode layer 241 and the second electrode layer 242 is increased, the electric field intensity of the electric field generated between the first electrode layer 241 and the second electrode layer 242 is increased, and the transmittance of the first filter 22 for infrared light is increased accordingly. Alternatively, when the potential difference between the first electrode layer 241 and the second electrode layer 242 is decreased, the electric field intensity of the electric field generated between the first electrode layer 241 and the second electrode layer 242 is decreased, and the light transmittance of the first filter 22 to infrared light is decreased accordingly.
Further, if the voltage values of the voltages applied to the second electrode layer 242 and the third electrode layer 243 are different, a potential difference is formed between the second electrode layer 242 and the third electrode layer 243, so as to generate an electric field, at this time, the second optical filter 23 located between the second electrode layer 242 and the third electrode layer 243 undergoes an oxidation-reduction reaction under the effect of the electric field, and the absorption spectrum of the visible light by the second optical filter 23 changes along with the transfer of ions therein, that is, the light transmittance of the visible light by the second optical filter 23 changes. For example, when the potential difference between the second electrode layer 242 and the third electrode layer 243 is increased, the electric field intensity of the electric field generated between the second electrode layer 242 and the third electrode layer 243 is increased, and the transmittance of the second filter 23 to visible light is reduced. Alternatively, when the potential difference between the second electrode layer 242 and the third electrode layer 243 is decreased, the electric field intensity of the electric field generated between the second electrode layer 242 and the third electrode layer 243 is decreased, and the light transmittance of the second filter 23 to visible light is increased accordingly.
In some embodiments, referring to fig. 6, the first electrode layer 241 is disposed near the parfocal lens 1, the third electrode layer 243 is disposed away from the parfocal lens 1, and the second electrode layer 242 is disposed between the first electrode layer 241 and the third electrode layer 243. A light beam L1 composed of infrared light and visible light enters from the light entrance side 11 of the parfocal lens 1, and exits from the focal point of the light exit side 12, passes through the first electrode layer 241 and enters the first optical filter 22, the first optical filter 22 filters the infrared light in the light beam L1 and exits from the first optical filter 22 as a light beam L2, the light beam L2 passes through the second electrode layer 242 and enters the second optical filter 23, the second optical filter 23 filters the visible light in the light beam L2 and exits from the second optical filter 23 as a light beam L3, the light beam L3 passes through the third electrode layer 243 and enters the photosensitive element 3, the photosensitive element 3 recognizes the received light beam L3 as an optical signal, converts the optical signal into an electrical signal and sends the electrical signal to the printed circuit board 4, and the electrical signal is received and stored by the printed circuit board 4.
In some embodiments, referring to fig. 7, the first electrode layer 241 is disposed away from the parfocal lens 1, the third electrode layer 243 is disposed close to the parfocal lens 1, and the second electrode layer 242 is disposed between the first electrode layer 241 and the third electrode layer 243. A light beam L1 'composed of infrared light and visible light enters from the light entrance side 11 of the parfocal lens 1, and exits from the focal point of the light exit side 12, passes through the third electrode layer 243 and enters the second optical filter 23, the second optical filter 23 filters the visible light in the light beam L1', the light beam L2 'exits from the second optical filter 23, the light beam L2' passes through the second electrode layer 242 and enters the first optical filter 22, the first optical filter 22 filters the infrared light in the light beam L2 ', the light beam L3' exits from the first optical filter 22, the light beam L3 'passes through the first electrode layer 241 and enters the photosensitive element 3, the photosensitive element 3 recognizes the received light beam L3' as an optical signal, converts the optical signal into an electrical signal, and sends the electrical signal to the printed circuit board 4, and the printed circuit board 4 receives and stores the electrical signal.
Specifically, the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243 are all made of a transparent conductive material, such as conductive glass (ITO).
In some embodiments, the filter unit 2 further includes a first insulating protective layer 25 and a second insulating protective layer 26. The first insulating protective layer 25 and the second insulating protective layer 26 are made of a transparent insulating material, such as polymethyl methacrylate (pmma), polyester resin (Polyethylene terephthalate), and the like, for protecting the electrode layer and preventing leakage of electricity from the electrode layer.
Further, the first insulating protection layer 25 and the second insulating protection layer 26 may be a film structure, the first insulating protection layer 25 covers the first electrode layer 241 far away from the first filter, and the second insulating protection layer 26 covers the third electrode layer far away from the second filter.
In some embodiments, voltages are applied to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243, respectively, so that potential differences are generated between the first electrode layer 241 and the second electrode layer 242, and between the second electrode layer 242 and the third electrode layer 243, thereby generating an electric field, and the first optical filter 22 and the second optical filter 23 undergo an oxidation-reduction reaction under the action of the electric field, and the light transmittance thereof changes accordingly, that is, by controlling the values of the potential differences between the first electrode layer 241 and the second electrode layer 242, and between the second electrode layer 242 and the third electrode layer 243, the light transmittance of the first optical filter 22 and the second optical filter 23 can be controlled.
In some embodiments, with V12Denotes a potential difference, V, between the first electrode layer 241 and the second electrode layer 24223Represents a potential difference, T, between the second electrode layer 242 and the third electrode layer 2431Represents the transmittance, T, of the first filter 22 to infrared light1maxRepresents the maximum transmittance of the first filter 22 for infrared light; t is2Represents the transmittance, T, of the second filter 23 to visible light2maxRepresenting the maximum transmittance of the second filter 23 for visible light, then:
when V is12When the pressure is less than or equal to V1, T1＝0％；
When V is12When not less than V2, T1＝T1maxWherein, V1<V2；
When V is23When not less than V3, T2＝0％，
When V is23When the pressure is less than or equal to V4, T2＝T2maxWherein, V4<V3；
Thus, by regulating V12And V23Will bring different beneficial effects to the embodiments of the present application, for example:
when it is necessary to perform visible light imaging by simply filtering infrared light, the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243 are connected to an external power source, and voltages are applied to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243, respectively. See FIG. 8, let V12≤V1，V23V4, at the moment, the light transmittance T of the first filter 22 to infrared light10%, the transmittance T of the second filter 23 to visible light2＝T2max. Go toStep by step, can be adjusted by V23To adjust the transmittance T of the second filter 23 to visible light2Let V4 be less than or equal to V23If V3 is smaller, the transmittance of the second filter 23 to visible light is 0% < T2≤T2maxAnd within this range, V23The larger the value of (A), the greater the transmittance T of the second filter 23 to visible light2The smaller. The camera module under this state is the visible light camera module, only can form images to the visible light.
When imaging is required in a dark environment, the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243 are connected to an external power source, and voltages are applied to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243, respectively. See FIG. 9, let V1 < V12V is not more than V2, and V is not less than V423< V3, where the transmittance of the first filter 22 for infrared light is 0% < T1≤T1maxThe light transmittance of the second filter 23 to visible light is 0% < T2≤T2max. Infrared light and visible light homoenergetic are through the camera module under this state. And within this range, V12The larger the value of (A), the greater the transmittance T of the first filter 22 to infrared light1The larger; v23The larger the value of (A), the greater the transmittance T of the second filter 23 to visible light2The smaller will be.
When infrared light imaging needs to be performed by simply filtering visible light, the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243 are connected to an external power source, and voltages are applied to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243, respectively. See FIG. 10, let V12≥V2，V23At least V3, the light transmittance T of the first filter 22 to infrared light1＝T1maxThe transmittance T of the second filter 23 to visible light20%. Further, V can be adjusted12To adjust the transmittance T of the first filter 22 to infrared light1Let V1 < V12V2 or less, the transmittance of the first filter 22 to infrared light is 0% < T1≤T1maxAnd within this range, V12The larger the value of (b), the larger the transmittance of infrared light by the first filter 22. The camera module in this state is redThe external light camera module can only image infrared light.
When it is necessary to perform privacy protection blocking of all infrared light and visible light imaging, the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243 are connected to an external power supply, respectively, and voltages are applied to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243, respectively. See FIG. 11, let V12＝V1，V23When the transmittance T of the first filter 22 for infrared light is equal to V310%, the transmittance T of the second filter 23 to visible light20%. The infrared light and the visible light can not pass through the camera module in the state.
In some embodiments, electrode layer 24 also includes a fourth electrode layer 244. The fourth electrode layer 244 may be disposed between the second electrode layer 242 and the first filter 22, and the fourth electrode layer 244 may also be disposed between the second electrode layer 242 and the second filter 23.
In some embodiments, referring to fig. 12 and 13, a separator layer 245 is sandwiched between the fourth electrode layer 244 and the second electrode layer 242. Specifically, the two side surfaces of the fourth electrode layer 244 are respectively in contact with the second electrode layer 242 and the isolation layer 245, and the isolation layer 245 is made of a transparent insulating material, such as polymethyl methacrylate (pmma), polyester resin (Polyethylene terephthalate), and the like, and is used for preventing voltages on the second electrode layer 242 and the fourth electrode layer 244 from interfering with each other.
In some embodiments, voltages are applied to the first electrode layer 241, the second electrode layer 242, the third electrode layer 243, and the fourth electrode layer 244, respectively, so that potential differences are generated between the first electrode layer 241 and the second electrode layer 242, and between the third electrode layer 243 and the fourth electrode layer 244, respectively, to generate an electric field, and the first optical filter 22 and the second optical filter 23 undergo an oxidation-reduction reaction under the action of the electric field, and the light transmittance thereof changes accordingly, that is, by controlling the values of the potential differences between the first electrode layer 241 and the second electrode layer 242, and between the third electrode layer 243 and the fourth electrode layer 244, the light transmittance of the first optical filter 22 and the second optical filter 23 can be controlled.
It should be noted that, in the above scheme of controlling the light transmittance of the first optical filter 22 and the second optical filter 23 by controlling the potential differences between the first electrode layer 241 and the second electrode layer 242 and between the second electrode layer 242 and the third electrode layer 243, in a specific implementation, if only the voltage applied to the second electrode layer 242 is changed, the potential differences between the first electrode layer 241 and the second electrode layer 242 and between the second electrode layer 242 and the third electrode layer 243 are changed accordingly, and only the voltage values applied to the first electrode layer 241, the second electrode layer 242 and the third electrode layer 243 are changed simultaneously or the voltage applied to the second electrode layer 242 is fixed, and only the voltage values applied to the first electrode layer 241 and the third electrode layer 243 are changed, so that the desired effect can be obtained.
After the fourth electrode layer 244 and the isolation layer 245 are added, the regulation and control of the voltages applied to the first electrode layer 241, the second electrode layer 242, the third electrode layer 243, and the fourth electrode layer 244 are simpler and more flexible, and as described above, the light transmittance of the first optical filter 22 and the second optical filter 23 can be controlled by respectively controlling the values of the potential differences between the first electrode layer 241 and the second electrode layer 242, and between the second electrode layer 242 and the third electrode layer 243.
According to the technical scheme, the camera module 6 comprises a parfocal lens 1, a filtering unit 2, a photosensitive element 3 and a printed circuit board 4 which are sequentially arranged; the filter unit 2 comprises a fixed frame 21, and a first filter 22, a second filter 23 and an electrode layer 24 which are positioned on the fixed frame 21; the first filter 22 and the second filter 23 are located in the electrode layer 24. The photosensitive element 3 is attached to the printed circuit board 4 and electrically connected to the printed circuit board 4.
The first filter 22 is used for filtering infrared light, and the second filter 23 is used for filtering visible light. By regulating and controlling the voltage introduced into the electrode layer 24, the light transmittance of the first optical filter 22 and the second optical filter 23 to visible light and infrared light can be controlled, so that the shot picture has higher imaging quality. And just can realize the debugging to infrared light and visible light luminousness simultaneously in a camera module 6, compare with the current technique that needs to reach the same effect and adopt infrared camera module and the combination of visible light camera module, the cost is cheaper.
The following is a second embodiment of the present application.
A second embodiment of the present application provides an electronic device 100, and the electronic device 100 may be, for example, a mobile phone, a tablet computer, an aerial vehicle, a digital camera, and the like.
Fig. 14 is a schematic hardware structure diagram of an electronic device according to an embodiment of the present application. As shown, the electronic device 100 may include a processor 110, a memory 120, and the camera module 6, wherein the memory 120 and the camera module 6 are electrically connected to the processor 110.
In some embodiments, processor 110 may include one or more processing units, such as: the processor 110 may include an Application Processor (AP), a modem processor, a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a neural Network Processor (NPU), among others. The different processing units may be independent devices, or may be integrated into one or more processors, for example, a system on a chip (SoC).
In some embodiments, a memory may also be provided in the processor 110 for storing instructions and data, for example, image data transmitted from the camera module 6.
In some embodiments, processor 110 may include one or more interfaces. The interface may include an integrated circuit (I2C) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a general-purpose input/output (GPIO) interface, a Subscriber Identity Module (SIM) interface, and/or a Universal Serial Bus (USB) interface, etc.
The memory 120 may be used to store computer-executable program code, which includes instructions. The memory 120 may include a program storage area and a data storage area. The storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like. The storage data area may store data (such as audio data, phone book, etc.) created during use of the electronic device 100, and the like. Further, the memory 120 may include one or more memory units, for example, may include a volatile memory (volatile memory), such as: dynamic Random Access Memory (DRAM), Static Random Access Memory (SRAM), and the like; non-volatile memory (NVM) may also be included, such as: read-only memory (ROM), flash memory (flash memory), and the like. The processor 110 executes various functional applications of the electronic device 100 and data processing by executing instructions stored in the memory 120 and/or instructions stored in a memory provided in the processor.
The camera module 6 is used for capturing still images or videos. The camera module 6 comprises a parfocal lens 1, a filtering unit 2, a photosensitive element 3 and a printed circuit board 4, and an object projects an optical image to the photosensitive element 3 through the parfocal lens 1 and the filtering unit 2. The photosensitive element 3 may be a Charge Coupled Device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The light sensing element 3 converts the optical signal into an electrical signal, which is then transferred to the ISP through the printed circuit board 4 to be converted into a digital image signal. And the ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signals into image signals in standard RGB, YUV, RYYB and other formats. In some embodiments, the electronic device 100 may include 1 or N camera modules 6, where N is a positive integer greater than 1.
In some embodiments, as shown in fig. 15, the electronic device 100 further includes a housing 5, and the processor 110, the memory 120, and the camera module 6 are all located in the housing 5.
In some embodiments, the housing 5 includes at least one lens hole 51, the aperture size of the lens hole 51 matching the size of the parfocal lens 1 and the filter unit 2, the parfocal lens 1 and the filter unit 2 being located in the lens hole 51.
In some embodiments, the processor 110 may include a main board 7, the main board 7 includes a control circuit, and the control circuit is electrically connected to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243 of the camera module 6, respectively, and is configured to provide voltages to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243, and may regulate values of the voltages applied to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243.
In some embodiments, the processor 110 may include a main board 7, the main board 7 includes a control circuit, and the control circuit is electrically connected to the first electrode layer 241, the second electrode layer 242, the third electrode layer 243, and the fourth electrode layer 244 of the camera module 6, respectively, and is configured to provide voltages to the first electrode layer 241, the second electrode layer 242, the third electrode layer 243, and the fourth electrode layer 244, and may regulate values of the voltages provided to the first electrode layer 241, the second electrode layer 242, the third electrode layer 243, and the fourth electrode layer 244.
In some embodiments, the processor 110 may include at least one control chip, and the control chip is electrically connected to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243 of the camera module 6, respectively, and is configured to provide voltages to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243, and may regulate and control the voltage values provided to the first electrode layer 241, the second electrode layer 242, and the third electrode layer 243.
In some embodiments, the processor 110 may include at least one control chip, and the control chip is electrically connected to the first electrode layer 241, the second electrode layer 242, the third electrode layer 243, and the fourth electrode layer 244 of the camera module 6, respectively, and is configured to provide voltages to the first electrode layer 241, the second electrode layer 242, the third electrode layer 243, and the fourth electrode layer 244, and may regulate and control the voltage values provided to the first electrode layer 241, the second electrode layer 242, the third electrode layer 243, and the fourth electrode layer 244.
It is to be understood that the illustrated structure of the embodiment of the present application does not specifically limit the electronic device 100. In other embodiments of the present application, electronic device 100 may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (10)
1. The utility model provides a camera module which characterized in that includes: the device comprises a parfocal lens (1), a filtering unit (2), a photosensitive element (3) and a printed circuit board (4);
the parfocal lens (1) comprises a light inlet side (11) and a light outlet side (12), and the light filtering unit (2), the photosensitive element (3) and the printed circuit board (4) are sequentially arranged on one side of the light outlet side (12) of the parfocal lens (1);
the photosensitive element (3) is arranged on the printed circuit board (4) and is electrically connected with the printed circuit board (4), the photosensitive element (3) is used for receiving optical signals passing through the filtering unit (2), converting the optical signals into electrical signals and transmitting the electrical signals, and the printed circuit board (4) is used for receiving the electrical signals and supplying power to the photosensitive element (3);
the filtering unit (2) comprises a fixed frame (21), a first filter (22), a second filter (23) and an electrode layer (24); the electrode layer (24) is fixed on the fixing frame (21), the electrode layer (24) is electrically connected to an external voltage, the voltage is variable voltage, the first optical filter (22) and the second optical filter (23) are arranged between the electrode layers (24), the first optical filter (22) is used for filtering infrared light, and the second optical filter (23) is used for filtering visible light.
2. The camera module according to claim 1, wherein the electrode layer (24) comprises a first electrode layer (241), a second electrode layer (242) and a third electrode layer (243);
the first filter (22) is located between the first electrode layer (241) and the second electrode layer (242), and the second filter (23) is located between the second electrode layer (242) and the third electrode layer (243).
3. The camera module according to claim 2, wherein the electrode layer (24) further comprises a fourth electrode layer (244);
the fourth electrode layer (244) is provided between the second electrode layer (242) and the first filter (22), and an isolation layer (245) is interposed between the fourth electrode layer (244) and the second electrode layer (242).
4. The camera module according to claim 2, wherein the electrode layer (24) further comprises a fourth electrode layer (244);
the fourth electrode layer (244) is provided between the second electrode layer (242) and the second filter (23), and an isolation layer (245) is interposed between the fourth electrode layer (244) and the second electrode layer (242).
5. The camera module according to claim 3 or 4, wherein the first electrode layer (241) is disposed close to the parfocal lens (1), and the third electrode layer (243) is disposed far from the parfocal lens (1).
6. The camera module according to claim 3 or 4, wherein the first electrode layer (241) is disposed away from the parfocal lens (1), and the third electrode layer (243) is disposed close to the parfocal lens (1).
7. The camera module according to claim 5, wherein the filter unit (2) further comprises a first insulating protection layer (25) and a second insulating protection layer (26), the first insulating protection layer (25) is disposed on a side of the first electrode layer (241) close to the parfocal lens (1), and the second insulating protection layer (26) is disposed on a side of the third electrode layer (243) far away from the parfocal lens (1).
8. The camera module according to claim 6, wherein the filter unit (2) further comprises a first insulating protection layer (25) and a second insulating protection layer (26), the first insulating protection layer (25) is disposed on a side of the first electrode layer (241) away from the parfocal lens (1), and the second insulating protection layer (26) is disposed on a side of the third electrode layer (243) close to the parfocal lens (1).
9. The camera module according to claim 7 or 8, wherein the fixing frame (21) is of a ring-shaped structure, forming a cavity;
the first optical filter (22), the second optical filter (23), the first electrode layer (241), the second electrode layer (242), the third electrode layer (243), the fourth electrode layer (244), the isolation layer (245), the first insulating protection layer (25) and the second insulating protection layer (26) are all located in the cavity.
10. An electronic device, characterized by comprising a housing (5), a camera module (6) according to any one of claims 1 to 9, and a main board (7);
the camera module (6) and the mainboard (7) are located in the shell, and the camera module (6) and the mainboard (7) are electrically connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121647636.7U CN215934943U (en) | 2021-07-20 | 2021-07-20 | Camera module and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121647636.7U CN215934943U (en) | 2021-07-20 | 2021-07-20 | Camera module and electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114793268A (en) * | 2022-03-03 | 2022-07-26 | 海信集团控股股份有限公司 | Camera control method and device and vehicle |
| WO2023179589A1 (en) * | 2022-03-22 | 2023-09-28 | 维沃移动通信有限公司 | Camera module and electronic device |
-
2021
- 2021-07-20 CN CN202121647636.7U patent/CN215934943U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114793268A (en) * | 2022-03-03 | 2022-07-26 | 海信集团控股股份有限公司 | Camera control method and device and vehicle |
| CN114793268B (en) * | 2022-03-03 | 2023-11-14 | 海信集团控股股份有限公司 | Camera control method and device and vehicle |
| WO2023179589A1 (en) * | 2022-03-22 | 2023-09-28 | 维沃移动通信有限公司 | Camera module and electronic device |
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Effective date of registration: 20230919 Address after: 201306 building C, No. 888, Huanhu West 2nd Road, Lingang New District, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai Patentee after: Shanghai Glory Smart Technology Development Co.,Ltd. Address before: Unit 3401, unit a, building 6, Shenye Zhongcheng, No. 8089, Hongli West Road, Donghai community, Xiangmihu street, Futian District, Shenzhen, Guangdong 518040 Patentee before: Honor Device Co.,Ltd. |