CN113747014A - Camera module, electronic equipment and image acquisition method - Google Patents
Camera module, electronic equipment and image acquisition method Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/667—Camera operation mode switching, e.g. between still and video, sport and normal or high- and low-resolution modes
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Abstract
The application discloses camera module, electronic equipment and image acquisition method, camera module includes: the tunable optical filter is positioned between the lens and the black-and-white image sensor, incident light sequentially penetrates through the lens and the tunable optical filter and irradiates the black-and-white image sensor, and the drive chip controls the spectral range of the incident light penetrating through the tunable optical filter. Therefore, the camera module is adjusted to be in different working modes, so that the wave bands of incident light rays passing through the tunable filter are different, and under the action of the incident light rays of different wave bands, the black-and-white image sensor can generate images of different types, so that the type of the image generated by the black-and-white image sensor is improved, and the image acquisition function of the camera module is diversified.
Description
Technical Field
The application belongs to the technical field of electronics, and particularly relates to a camera module, electronic equipment and an image acquisition method.
Background
With the development of electronic technology, people have higher and higher requirements on image acquisition, and thus have higher and higher requirements on camera modules. In the process of implementing the present application, the applicant finds that at least the following problems exist in the prior art: because invisible light such as infrared light and ultraviolet ray of need filtering usually among the current camera module to make the camera module only use visible light to carry out image acquisition, the image acquisition function of the current camera module of visible is comparatively single.
Disclosure of Invention
The application aims to provide a camera module, electronic equipment and an image acquisition method, and at least solves one of the problems that the image acquisition function of the current camera module is single.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a camera module, including: the device comprises a lens, a tunable optical filter, a driving chip and a black-and-white image sensor, wherein the tunable optical filter is positioned between the lens and the black-and-white image sensor, incident light rays sequentially pass through the lens and the tunable optical filter and irradiate onto the black-and-white image sensor, and the driving chip controls the spectral range of the incident light rays passing through the tunable optical filter.
In a second aspect, an embodiment of the present application provides an electronic device, including: the camera module is provided.
In a third aspect, an embodiment of the present application further provides an image capturing method applied to the camera module in the first aspect,
the method comprises the following steps:
determining a working mode of the camera module as a target working mode, and determining a waveband of the incident light which can pass through the tunable optical filter as a target waveband, wherein the target working mode corresponds to the target waveband;
and under the condition that the wave band of the incident light is a target wave band, controlling the black-and-white image sensor to acquire a target image.
In the embodiment of the application, the camera module is in different working modes, the wave bands of the incident light rays which can pass through the tunable filter are different, and the wave bands correspond to the working modes one to one, so that the camera module is in different working modes through adjustment, the wave bands of the incident light rays which can pass through the tunable filter are different, under the action of the incident light rays of different wave bands, the black-and-white image sensor can generate images of different types, the types of the images generated by the black-and-white image sensor are improved, and the image acquisition function of the camera module is diversified.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a camera module according to an embodiment of the present disclosure;
fig. 2 is an exploded view of a camera module according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a tunable filter in a camera module according to an embodiment of the present disclosure;
fig. 4 is a second schematic structural diagram of a tunable filter in a camera module according to the present disclosure;
fig. 5 is a schematic structural diagram of a black-and-white image sensor in a camera module according to an embodiment of the present disclosure;
fig. 6 is one of timing diagrams of a tunable filter and a black-and-white image sensor in a camera module according to an embodiment of the present disclosure;
fig. 7 is a second timing diagram of a tunable filter and a black-and-white image sensor in a camera module according to the present invention;
fig. 8 is a flowchart of an image capturing method provided in an embodiment of the present application;
fig. 9 is a schematic structural diagram of an image capturing device according to an embodiment of the present disclosure;
fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application;
fig. 11 is a second schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. 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 application.
The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a camera module provided in an embodiment of the present application, and fig. 2 is an exploded view of the camera module provided in the embodiment of the present application, and as shown in fig. 1 and fig. 2, the camera module includes: the image sensor comprises a lens 10, a tunable optical filter 20, a driving chip and a black-and-white image sensor 30, wherein the tunable optical filter 20 is located between the lens 10 and the black-and-white image sensor 30, incident light sequentially passes through the lens 10 and the tunable optical filter 20 and irradiates the black-and-white image sensor 30, and the driving chip controls the spectral range of the incident light passing through the tunable optical filter 20.
The spectral range of the incident light passing through the tunable filter 20 is 400 to 800 nm, and the driving chip may be used to control the variation of the tunable filter 20, so as to adjust the spectral range of the incident light passing through the tunable filter 20.
When the camera module is in different working modes, the wavelength bands (corresponding spectral ranges) of the incident light that can pass through the tunable filter 20 are different, and the wavelength bands correspond to the working modes one to one.
The working principle of the embodiment of the application can be referred to as the following expression:
by adjusting the camera module to be in different working modes, the wave bands of incident light passing through the tunable filter 20 are different, and under the action of the incident light of different wave bands, the black-and-white image sensor 30 can generate images of different types, so that the type of the image generated by the black-and-white image sensor 30 is improved, and the image acquisition function of the camera module is diversified.
For example: when the camera module is in the first working mode, the band of the incident light passing through the tunable filter 20 is an ultraviolet band, that is, the first working mode corresponds to the ultraviolet band, and when the light source is an ultraviolet light source (that is, the light emitted by the light source is the incident light), an ultraviolet image can be generated on the black-and-white image sensor 30, that is, the camera module can realize the function of ultraviolet imaging; similarly, when the camera module is in the second operating mode, the band of the incident light passing through the tunable filter 20 is an infrared band, that is, the second operating mode corresponds to the infrared band, and when the light source is an infrared light source, an infrared image can be generated on the black-and-white image sensor 30, that is, the camera module can realize an infrared imaging function at this time.
The spectral range of the incident light passing through the tunable filter 20 may be 400 to 800 nm, for example: the spectral range of the ultraviolet light can be 400 nanometers, the spectral range of the blue light is 450 to 480nm, the spectral range of the green light is 500 to 560nm, the spectral range of the purple light is 400 to 435nm, the spectral range of the cyan light is 480 to 490nm, the spectral range of the yellow light is 580 to 595nm, the spectral range of the red light is 622 to 760nm, and the spectral range of the infrared light can be 780 to 800 nanometers.
In addition, while the ultraviolet imaging function or the infrared imaging function is realized, some characteristic parameters of a shot object may be detected by matching with a corresponding target algorithm according to the characteristics of the ultraviolet imaging or the infrared imaging, the shot object may refer to an object collected by the camera module, and an image finally generated in the black-and-white image sensor 30 includes corresponding characteristics of the object, and the characteristic parameters may include parameters such as surface temperature or food maturity.
For example: the infrared imaging is combined with a corresponding algorithm to realize the functions of temperature testing, night vision devices, biological identification and the like.
It should be noted that, when the camera module is in other operation modes, the specific principle may refer to the above-mentioned related expressions of the first operation mode and the second operation mode.
In addition, the operating mode in which the camera module is located may be understood to include at least one of the following parameters: the time quantum that the camera module was located, the illumination intensity of the environment that the camera module was located, the temperature of the environment that the camera module was located and the humidity of the environment that the camera module was located.
Referring to fig. 1 and 2, the camera module may further include a lens holder 11, the lens holder 11 is provided with a receiving hole, the lens 10 may be embedded in the receiving hole, and the tunable filter 20 may be disposed opposite to the lens 10 and the black-and-white image sensor 30, respectively. The lens holder 11 may also be referred to as a lens barrel or a motor.
Among them, as an alternative embodiment, the black and white image sensor 30 may be referred to as a black and white (Mono) image sensor. Referring to fig. 5, the black-and-white image sensor 30 may include a lens 31, a metal circuit layer 32, and a photodiode layer 33, which are sequentially stacked.
In an alternative embodiment, the tunable filter 20 is a liquid crystal tunable filter. The Liquid Crystal Tunable Filter may also be referred to as a Liquid Crystal Tunable Filter (LCTF). The LCTF is an optical device manufactured according to the electric control birefringence effect of liquid crystal and the interference principle of polarized light, is used as an optical filter, and has the advantages of narrow bandwidth, low power consumption, wide tuning range, low driving voltage, simple structure and the like, so that the imaging effect of the camera module is better.
When the tunable filter 20 is a liquid crystal tunable filter, the LCTF can cut off infrared light and ultraviolet light, and the black-and-white image sensor 30 outputs a black-and-white image; in addition, the LCTF can filter the wavelength bands that only pass R, G, B lights (i.e. red, green, and blue colors), and the monochrome image sensor 30 captures R, G, B monochrome color channel images, and then combines the 3 color channel images into an RGB color image; on the basis, the black-and-white image and the RGB color image can be synthesized, so that the display parameters of the synthesized image can be enhanced, and the display parameters can include at least part of parameters such as signal-to-noise ratio, definition, brightness and the like, and the imaging effect of the image acquired by the camera module is further enhanced.
As an alternative embodiment, referring to fig. 3, the liquid crystal tunable filter includes a plurality of phase retarders cascaded in sequence. Therefore, the phase delay plate can be used for screening the light of different wave bands in the incident light and only allowing the light of a specific wave band to be emitted, so that the screening of the light of the specific wave band can be realized. And a plurality of phase delay pieces are cascaded in sequence, so that the screening effect on the light rays in a specific wave band can be further enhanced.
The retardation plate may be referred to as a Lyot plate.
As an alternative embodiment, referring to fig. 4, the phase retarder includes a first polarizer 21, a liquid crystal panel 22, a quartz panel 23, and a second polarizer 24, and the first polarizer 21, the liquid crystal panel 22, the quartz panel 23, and the second polarizer 24 are sequentially stacked.
The phase delay piece provided in the embodiment can ensure that the screening effect on the light rays of the specific wave band is more reliable, and the phase delay piece has a simple structure and is lower in cost.
The working principle of the present embodiment can be referred to as the following expression:
natural lightPhase retardation occurs when passing through the Lyot plate, and the calculation formula of the phase retardation can be seen as the following formula: 2 pi ΓGeneral assemblyλ, where λ is the wavelength, δ is the phase retardation of the incident and the outgoing light, ΓGeneral assemblyIs the optical path difference between incident light and emergent light in the phase retarderdΔnΓ is the optical path difference between the incident light and the emergent light of the liquid crystal plate 22 or the quartz plate 23, d is the width of the liquid crystal plate 22 or the quartz plate 23, and Δ n is the refractive index difference generated before and after the electrically controlled birefringence effect of the liquid crystal, therefore, Γ of each phase retarderGeneral assembly＝ΓLiquid crystal sheet+ΓQuartz plateAnd the spectral transmittance of each phase retarder is: t is1＝I1/I0＝0.5(1+cosδ)＝0.5[1+cos(2πΔnd/λ)]Wherein, I1And I0Are all light intensity vectors, and I1Is the light intensity vector of the emergent light, I0Is the light intensity vector of the incident light.
Meanwhile, since a plurality of phase retarders are cascaded in sequence, Γ of any one phase retardern+1＝2ΓnThat is, the optical path difference of any one phase retardation plate is twice as large as the optical path difference of the previous phase retardation plate connected to the phase retardation plate.
In combination with the above T1And Γn+1Then T is known2＝I2/I1＝0.5(1+cos2δ)，T3＝I3/I2T can be obtained similarly to 0.5(1+ cos4 δ)4And TnThus, TGeneral assembly＝T1*T2*T3*……TnWhen T is 1, that is, m λ is Δ nd (m is an integer), the wavelength band having the wavelength at λ is selected and output. The LCTF is thus electronically adjustable over a wide band of wavelengths.
In this way, the dynamic modulation of the optical filter is realized by changing the voltage applied to the liquid crystal, modulating the phase of the wavelength respectively, selecting the output range of the waveband, and locking other wavelengths, so that high-precision narrow-wave output is obtained.
As an alternative embodiment, referring to fig. 4, the phase retarder further includes a first glass substrate 25 and a second glass substrate 26, the first glass substrate 25 is located between the first polarizer 21 and the liquid crystal sheet 22, and the first glass substrate 25 abuts against the first polarizer 21 and the liquid crystal sheet 22, respectively, the second glass substrate 26 is located between the liquid crystal sheet 22 and the quartz sheet 23, and the second glass substrate 26 abuts against the liquid crystal sheet 22 and the quartz sheet 23, respectively.
In this way, since the first glass substrate 25 is located between the first polarizer 21 and the liquid crystal panel 22 and the second glass substrate 26 is located between the liquid crystal panel 22 and the quartz panel 23, damage to the liquid crystal panel 22 and the quartz panel 23 can be reduced by the first glass substrate 25 and the second glass substrate 26, and the protective effect on the liquid crystal panel 22 and the quartz panel 23 can be enhanced, and at the same time, the light guiding effect on light can be further enhanced by providing the first glass substrate 25 and the second glass substrate 26.
The embodiment of the present application further provides an electronic device, which includes the above-mentioned camera module, and since the electronic device provided in the embodiment of the present application includes the above-mentioned camera module, the electronic device has the same beneficial technical effects as the above-mentioned embodiment, and the structure of the camera module can be referred to the corresponding expressions in the above-mentioned embodiment, and is not described herein again in detail.
The embodiment of the present application further provides an image capturing method, where the method provided in this embodiment is applied to the camera module in the above embodiment, and the camera module includes: the image sensor comprises a lens 10, a tunable optical filter 20 and a black-and-white image sensor 30, wherein the tunable optical filter 20 is positioned between the lens 10 and the black-and-white image sensor 30, and incident light sequentially passes through the lens 10 and the tunable optical filter 20 and irradiates the black-and-white image sensor 30;
as shown in fig. 8, the method comprises the steps of:
The working mode may refer to corresponding expressions in the above embodiments, and is not described herein again.
And 802, controlling the black-and-white image sensor to acquire a target image under the condition that the wave band of the incident light is a target wave band.
It should be noted that, the steps in this embodiment may be completed by a controller of the camera module, and when the camera module is applied to the electronic device, the controller may also be referred to as a controller of the electronic device.
When the target waveband is an ultraviolet waveband, the target image is a purple spectrum image, when the target waveband is an infrared waveband, the target image is a red spectrum image, and when the target waveband is a green waveband, the target image is a green spectrum image.
Therefore, different color spectrum images can be obtained, the types of the images collected by the camera module are increased, and the image collecting function of the camera module is diversified.
As an optional implementation manner, the target operation mode includes a first operation mode, a second operation mode and a third operation mode, the target wavelength band includes a first wavelength band, a second wavelength band and a third wavelength band, the first operation mode corresponds to the first wavelength band, the second operation mode corresponds to the second wavelength band, and the third operation mode corresponds to the third wavelength band;
under the condition that the wave band of the incident light is a target wave band, controlling the black-and-white image sensor to acquire a target image, comprising the following steps:
controlling the black-and-white image sensor to acquire a first image under the condition that the wave band of the incident light is the first wave band, controlling the black-and-white image sensor to acquire a second image under the condition that the wave band of the incident light is the second wave band, and controlling the black-and-white image sensor to acquire a third image under the condition that the wave band of the incident light is the third wave band, wherein the colors in the display contents of the first image, the second image and the third image are different;
and determining an image obtained by synthesizing the first image, the second image and the third image as the target image, wherein the color of the display content of the target image is obtained by synthesizing the colors of the display content of the first image, the second image and the third image.
Wherein the first, second and third bands may all be different.
In the embodiment, images obtained by different wave bands can be synthesized to obtain a synthesized image, so that the type of the image collected by the camera module is further enhanced, namely, the diversity of the image collected by the camera module is further enhanced.
The present embodiment is illustrated below:
the first wavelength band may be a blue light (λ B ═ 435.8nm) wavelength band, the first image may be a blue light spectrum image, the second wavelength band may be a green light (λ B ═ 546.1nm) wavelength band, the second image may be a green light spectrum image, the third wavelength band may be a red light (λ B ═ 700.8nm) wavelength band, and the third image may be a red light spectrum image, and the first image, the second image, and the third image are synthesized to obtain a target image, that is, the color of the display content of the target image is synthesized according to the color in the display content of the first image, the second image, and the third image, so that the synthesized image may acquire part or all of the information of the photographed scene, thereby enhancing the integrity of the synthesized image in acquiring the information of the photographed scene.
As an optional implementation, the target operation modes further include a fourth operation mode, the target wavelength band includes a fourth wavelength band, and the first wavelength band, the second wavelength band, and the third wavelength band all belong to a part of the fourth wavelength band;
under the condition that the wave band of the incident light is a target wave band, controlling the black-and-white image sensor to acquire a target image, and the method further comprises the following steps:
under the condition that the wave band of the incident light is the fourth wave band, controlling the black-and-white image sensor to acquire a fourth image;
after determining an image obtained by synthesizing the first image, the second image, and the third image as the target image, the method further includes:
and correcting the target image according to the fourth image.
The fourth wavelength band may be referred to as a visible light wavelength band (e.g., 380-760nm), and the first, second and third wavelength bands are part of the fourth wavelength band, and the fourth image may be referred to as a full-spectrum luminance image.
In this embodiment, the full-spectrum luminance image may completely reflect various parameters of the current environment, and the display parameter of the target image may be corrected by using the fourth image, so as to enhance the display parameter of the corrected target image, and the display parameter may include at least some parameters of the luminance, the signal-to-noise ratio, the dark environment photosensitive performance, and the like, so as to further enhance the imaging effect of the corrected target image.
As an optional implementation manner, the determining that the working mode in which the camera module is located is the target working mode includes:
receiving a target signal sent by the black-and-white image sensor;
and determining the working mode of the tunable optical filter as a target working mode according to the target signal.
The target signal may indicate that one frame of image of the black-and-white image sensor has been acquired, and is in a time gap between the completion of the acquisition of the current frame of image and the start of the acquisition of the next frame of image, so that the target signal may be sent, and the tunable optical filter 20 may be controlled to switch the working mode according to the target signal.
Therefore, the phenomenon that the imaging effect of the acquired image is poor due to the fact that the working mode is switched when the image of the black-and-white image sensor is not acquired can be reduced, namely the imaging effect of the acquired image can be enhanced by the method and the device.
The specific type of the target signal is not limited herein, and for example: the target signal may be a V _ sync down signal.
Referring to fig. 6 and 7, each V _ sync (i.e. the duration corresponding to one pulse signal) indicates that the image acquisition of one frame on the monochrome image sensor 30 is completed, and at this time, the LCTF is at R light (red-only mode), G light (green-only mode), B light (blue-only mode) or Mono (visible-light-only mode).
In the present application, the operation mode of the camera module may also be understood as the operation mode of the tunable filter 20.
Of course, as an alternative embodiment, the switching of the operation mode may also be controlled at regular preset time intervals. In this way, interaction with the black and white image sensor 30 is reduced, reducing power consumption.
In the embodiment of the present application, the electronic Device may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), a Wearable Device (Wearable Device), or the like.
It should be noted that, in the image capturing method provided in the embodiment of the present application, the executing subject may be an image capturing device, or a control module in the image capturing device for executing the image capturing method. In the embodiment of the present application, an image acquisition method executed by an image acquisition apparatus is taken as an example to describe the image acquisition apparatus provided in the embodiment of the present application.
As shown in fig. 9, fig. 9 is a schematic structural diagram of an image capturing device provided in this embodiment of the present application, where the image capturing device 900 is applied to a camera module, and the camera module includes: the tunable optical filter is positioned between the lens and the black-and-white image sensor, and incident light sequentially passes through the lens and the tunable optical filter and irradiates the black-and-white image sensor; as shown in fig. 9, the image capturing apparatus 900 includes:
a determining module 901, configured to determine that a working mode in which the camera module is located is a target working mode, so as to determine that a waveband of the incident light that can pass through the tunable filter is a target waveband, where the target working mode corresponds to the target waveband;
and the control module 902 is configured to control the black-and-white image sensor to acquire a target image when the wavelength band of the incident light is a target wavelength band.
Optionally, the target operating modes include a first operating mode, a second operating mode and a third operating mode, the target bands include a first band, a second band and a third band, the first operating mode corresponds to the first band, the second operating mode corresponds to the second band, and the third operating mode corresponds to the third band;
a control module 902 comprising:
the first control sub-module is used for controlling the black-and-white image sensor to acquire a first image under the condition that the wave band of the incident light is the first wave band, controlling the black-and-white image sensor to acquire a second image under the condition that the wave band of the incident light is the second wave band, and controlling the black-and-white image sensor to acquire a third image under the condition that the wave band of the incident light is the third wave band, wherein the colors of the display contents of the first image, the second image and the third image are different;
and the first determining submodule is used for determining an image obtained by synthesizing the first image, the second image and the third image as the target image, and the color of the display content of the target image is obtained by synthesizing the colors of the display content of the first image, the second image and the third image.
Optionally, the target operating modes further include a fourth operating mode, the target wavelength band includes a fourth wavelength band, and the first wavelength band, the second wavelength band, and the third wavelength band all belong to a portion of the fourth wavelength band;
the control module 902 further includes:
the second control submodule is used for controlling the black-and-white image sensor to acquire a fourth image under the condition that the wave band of the incident light is the fourth wave band;
the image capturing apparatus 900 further includes:
and the correction module is used for correcting the target image according to the fourth image.
Optionally, the determining module 901 includes:
the receiving submodule is used for receiving a target signal sent by the black-and-white image sensor;
and the second determining submodule is used for determining the working mode of the camera module as a target working mode according to the target signal.
The image acquisition device in the embodiment of the present application may be a device, or may be a component, an integrated circuit, or a chip in a terminal. The device can be mobile electronic equipment or non-mobile electronic equipment. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine or a self-service machine, and the like, and the embodiments of the present application are not particularly limited.
The image acquisition device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.
The image acquisition device provided by the embodiment of the application can realize each process realized by the method embodiment of fig. 8, and is not repeated here for avoiding repetition.
Optionally, as shown in fig. 10, an electronic device 1000 is further provided in this embodiment of the present application, and includes a processor 1001, a memory 1002, and a program or an instruction stored in the memory 1002 and executable on the processor 1001, where the program or the instruction is executed by the processor 1001 to implement each process of the above-mentioned embodiment of the image capturing method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
It should be noted that the electronic device in the embodiment of the present application includes the mobile electronic device and the non-mobile electronic device described above.
Fig. 11 is a schematic diagram of a hardware structure of an electronic device implementing an embodiment of the present application.
The electronic device 1100 includes, but is not limited to: a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109, a processor 1110, and the like.
Those skilled in the art will appreciate that the electronic device 1100 may further include a power source (e.g., a battery) for supplying power to the various components, and the power source may be logically connected to the processor 1110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system. The electronic device structure shown in fig. 11 does not constitute a limitation of the electronic device, and the electronic device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is not repeated here.
Wherein, the processor 1110 is configured to:
determining a working mode of the camera module as a target working mode, and determining a waveband of the incident light which can pass through the tunable optical filter as a target waveband, wherein the target working mode corresponds to the target waveband;
and under the condition that the wave band of the incident light is a target wave band, controlling the black-and-white image sensor to acquire a target image.
Optionally, the target operating modes include a first operating mode, a second operating mode and a third operating mode, the target bands include a first band, a second band and a third band, the first operating mode corresponds to the first band, the second operating mode corresponds to the second band, and the third operating mode corresponds to the third band;
the controlling, performed by processor 1110, of acquiring a target image by the black-and-white image sensor when the wavelength band of the incident light is a target wavelength band includes:
controlling the black-and-white image sensor to acquire a first image under the condition that the wave band of the incident light is the first wave band, controlling the black-and-white image sensor to acquire a second image under the condition that the wave band of the incident light is the second wave band, and controlling the black-and-white image sensor to acquire a third image under the condition that the wave band of the incident light is the third wave band, wherein the colors in the display contents of the first image, the second image and the third image are different;
and determining an image obtained by synthesizing the first image, the second image and the third image as the target image, wherein the color of the display content of the target image is obtained by synthesizing the colors of the display content of the first image, the second image and the third image.
Optionally, the target operating modes further include a fourth operating mode, the target wavelength band includes a fourth wavelength band, and the first wavelength band, the second wavelength band, and the third wavelength band all belong to a portion of the fourth wavelength band;
the controlling, performed by the processor 1110, the black-and-white image sensor to acquire a target image when the wave band of the incident light is a target wave band further includes:
under the condition that the wave band of the incident light is the fourth wave band, controlling the black-and-white image sensor to acquire a fourth image;
Optionally, the determining, performed by the processor 1110, that the working mode in which the camera module is located is a target working mode includes:
receiving a target signal sent by the black-and-white image sensor;
and determining the working mode of the camera module as a target working mode according to the target signal.
It should be understood that in the embodiment of the present application, the input Unit 1104 may include a Graphics Processing Unit (GPU) 11041 and a microphone 11042, and the Graphics processor 11041 processes image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1106 may include a display panel 11061, and the display panel 11061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1107 includes a touch panel 11071 and other input devices 11072. A touch panel 11071, also called a touch screen. The touch panel 11071 may include two portions of a touch detection device and a touch controller. Other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein. The memory 1109 may be used for storing software programs and various data including, but not limited to, application programs and an operating system. Processor 1110 may integrate an application processor that handles primarily operating systems, user interfaces, applications, etc. and a modem processor that handles primarily wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 1110.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the embodiment of the image acquisition method, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.
The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.
The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction to implement each process of the embodiment of the image acquisition method, and can achieve the same technical effect, and the details are not repeated here to avoid repetition.
It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a camera module which characterized in that includes: the device comprises a lens, a tunable optical filter, a driving chip and a black-and-white image sensor, wherein the tunable optical filter is positioned between the lens and the black-and-white image sensor, incident light rays sequentially pass through the lens and the tunable optical filter and irradiate onto the black-and-white image sensor, and the driving chip controls the spectral range of the incident light rays passing through the tunable optical filter.
2. The camera module of claim 1, wherein the tunable filter is a liquid crystal tunable filter.
3. The camera module of claim 2, wherein the liquid crystal tunable filter comprises a plurality of sequentially cascaded phase retarders.
4. The camera module according to claim 3, wherein the phase retarder comprises a first polarizer, a liquid crystal plate, a quartz plate and a second polarizer, and the first polarizer, the liquid crystal plate, the quartz plate and the second polarizer are sequentially stacked.
5. The camera module of claim 4, wherein the phase retarder further comprises a first glass substrate and a second glass substrate, the first glass substrate is located between the first polarizer and the liquid crystal sheet, and the first glass substrate is respectively abutted with the first polarizer and the liquid crystal sheet, the second glass substrate is located between the liquid crystal sheet and the quartz sheet, and the second glass substrate is respectively abutted with the liquid crystal sheet and the quartz sheet.
6. An electronic device, characterized by comprising the camera module of any one of claims 1 to 5.
7. An image acquisition method is applied to the camera module set of any one of claims 1 to 5;
the method comprises the following steps:
determining a working mode of the camera module as a target working mode, and determining a waveband of the incident light which can pass through the tunable optical filter as a target waveband, wherein the target working mode corresponds to the target waveband;
and under the condition that the wave band of the incident light is a target wave band, controlling the black-and-white image sensor to acquire a target image.
8. The method of claim 7, wherein the target operating modes include a first operating mode, a second operating mode, and a third operating mode, the target bands include a first band, a second band, and a third band, the first operating mode corresponds to the first band, the second operating mode corresponds to the second band, and the third operating mode corresponds to the third band;
under the condition that the wave band of the incident light is a target wave band, controlling the black-and-white image sensor to acquire a target image, comprising the following steps:
controlling the black-and-white image sensor to acquire a first image under the condition that the wave band of the incident light is the first wave band, controlling the black-and-white image sensor to acquire a second image under the condition that the wave band of the incident light is the second wave band, and controlling the black-and-white image sensor to acquire a third image under the condition that the wave band of the incident light is the third wave band, wherein the colors in the display contents of the first image, the second image and the third image are different;
and determining an image obtained by synthesizing the first image, the second image and the third image as the target image, wherein the color of the display content of the target image is obtained by synthesizing the colors of the display content of the first image, the second image and the third image.
9. The method of claim 8, wherein the target operating mode further comprises a fourth operating mode, the target band of wavelengths comprises a fourth band of wavelengths, and the first band of wavelengths, the second band of wavelengths, and the third band of wavelengths are all part of the fourth band of wavelengths;
under the condition that the wave band of the incident light is a target wave band, controlling the black-and-white image sensor to acquire a target image, and the method further comprises the following steps:
under the condition that the wave band of the incident light is the fourth wave band, controlling the black-and-white image sensor to acquire a fourth image;
after determining an image obtained by synthesizing the first image, the second image, and the third image as the target image, the method further includes:
and correcting the target image according to the fourth image.
10. The method according to any one of claims 7 to 9, wherein the determining that the operation mode of the camera module is the target operation mode comprises:
receiving a target signal sent by the black-and-white image sensor;
and determining the working mode of the camera module as a target working mode according to the target signal.
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