CN107544102A - A kind of camera lens module compensates confocal system and method - Google Patents
A kind of camera lens module compensates confocal system and method Download PDFInfo
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Abstract
Confocal system and method are compensated the invention discloses a kind of camera lens module.The technical scheme that the present invention is implemented, an optical liquid eyeglass is set between camera lens and imaging surface, by adjusting the thickness of optical liquid eyeglass, changes the focal plane of image formation by rays.Simultaneously, by the modulating transfer function value for contrasting the image obtained under different optical liquid lens thicknesses, obtain the maximum image of current environment light intensity modulated transfer function values, that is most clearly image, the optical liquid lens thickness corresponding to the image is determined, the thickness of adjustment optical liquid eyeglass enables camera lens module that clearly image is presented in imaging surface.By the technical scheme, it can guarantee that under different illumination conditions, camera lens module can obtain most clearly image in real time, solve camera lens module under different light intensities and be imaged unsharp problem.
Description
Technical field
The present invention relates to lens imaging field, more particularly to a kind of camera lens module to compensate confocal system and method.
Background technology
Because dispersion phenomenon be present in glass, focal plane that the monitoring camera of prior art is imaged under visible light conditions with
The focal plane being imaged under the conditions of infrared light is inconsistent, causes after ambient light dies down, it may appear that the fuzzy phenomenon of image.It is existing
There is technology one to solve this problem using completely confocal method, specially choose aspherical, low abbe number glass and deviation
The glass combination of Abbe number straight line, reduce visible ray and the skew in infrared imaging face.Program design difficulty is big, cost compared with
It is high.Prior art two sets two optical filters specially in camera lens module, passes through daytime and evening using confocal method is compensated
Upper different usage scenario switching optical filters, reach and compensate confocal purpose.Program imaging definition precision is unadjustable, and is
By solving the problems, such as that image color distortion obtains clearly image.In addition switching device is more complicated, increases camera lens module
Volume and design complexity.
The content of the invention
In order to solve the problems, such as that night even present in above-mentioned background technology is fuzzy, the invention provides a kind of camera lens mould
The compensation confocal system and method for group.
According to an aspect of the invention, there is provided a kind of camera lens module compensates confocal system, the camera lens module bag
Camera lens and imaging surface are included, the system also includes：Digital signal processing module, it is arranged on thickness between the camera lens and the imaging surface
Adjustable optical liquid eyeglass, the adjusting means of thickness regulation is carried out to the optical liquid eyeglass, is arranged on the camera lens
The photosensitive sensor of environmental light intensity signal is gathered around module in real time；
The digital signal processing module electrically connects the photosensitive sensor and the adjusting means, obtains the photosensitive sensor
The environmental light intensity signal of collection, the environmental light intensity signal of this acquisition is compared with the preceding environmental light intensity signal once obtained
Compared with if environmental light intensity signal becomes the thickness for by force, controlling the adjusting means to increase the optical liquid eyeglass；If environmental light intensity
Signal weaker, then the adjusting means is controlled to reduce the thickness of the optical liquid eyeglass.
Preferably, during the thickness of the optical liquid eyeglass changes, the digital signal processing module obtain it is described into
One group of image of image planes, the modulating transfer function value of every image is calculated, therefrom determine the maximum figure of modulating transfer function value
Picture, the adjusting means is controlled by the thickness regulation of the optical liquid eyeglass to the acquisition modulating transfer function value maximum
The corresponding position of image.
Preferably, the optical liquid eyeglass includes coaxial mounted first optical glass and the second optical glass, described
First optical glass can move forward and backward position relative to second optical glass；First optical glass and second light
Learn glass and form a cavity, the cavity is connected by a connection channel with an additional cavity, in the cavity and the additional cavity
It is sealed with optical liquid；
The adjusting means applies the normal pressure or negative pressure of different value, control by the optical liquid into the additional cavity
Make the optical liquid in the additional cavity and flow in or out the cavity, the optical liquid in the cavity drives first light
Learn glass and move forward and backward position relative to second optical glass, and then adjust first optical glass and second light
Learn the thickness of the optical liquid between glass.
Preferably, the optical liquid eyeglass includes coaxial mounted first optical glass and the second optical glass, described
First optical glass can move forward and backward position relative to second optical glass；First optical glass and second light
Learn glass and form a cavity, the cavity interior sealing has optical liquid, and the optical liquid uses organic optical film coated；
The adjusting means is by applying the normal pressure or negative pressure of different value to first optical glass, described in control
First optical glass moves forward and backward position relative to second optical glass, two sides up and down of the organic optical film with
Moved with first optical glass, drive the left and right sides of the organic optical film to middle shrinkage or to both sides
Compression, and then adjust and be coated on the height of optical liquid in the organic optical film and first optical glass and described
The distance between second optical glass is consistent.
Preferably, on first optical glass and/or second optical glass plating be formed with it is anti-reflection or filter action
Optical thin film.
According to another aspect of the present invention, there is provided a kind of camera lens module compensates confocal method, and methods described includes：
The adjustable optical liquid eyeglass of thickness is set between the camera lens and imaging surface of camera lens module, is the optics liquid
Somascope piece sets the adjusting means for carrying out thickness regulation, and sets photosensitive sensor to gather ring in real time around the camera lens module
Border light intensity signal；
Obtain the environmental light intensity signal of photosensitive sensor collection, by the environmental light intensity signal of this acquisition with it is preceding once
The environmental light intensity signal of acquisition is compared, if environmental light intensity signal becomes strong, controls the adjusting means to increase the optics
The thickness of liquid lens；If environmental light intensity signal weaker, the adjusting means is controlled to reduce the thickness of the optical liquid eyeglass
Degree.
Preferably, during the thickness of the optical liquid eyeglass changes, one group of image of the imaging surface, meter are obtained
The modulating transfer function value of every image is calculated, therefrom determines the maximum image of modulating transfer function value, controls the regulation dress
Put the thickness regulation of the optical liquid eyeglass to the corresponding position for obtaining the maximum image of the modulating transfer function value.
Preferably, the optical liquid eyeglass includes coaxial mounted first optical glass and the second optical glass, described
First optical glass can move forward and backward position relative to second optical glass；First optical glass and second light
Learn glass and form a cavity, the cavity is connected by a connection channel with an additional cavity, in the cavity and the additional cavity
It is sealed with optical liquid；
The adjusting means applies the normal pressure or negative pressure of different value, control by the optical liquid into the additional cavity
Make the optical liquid in the additional cavity and flow in or out the cavity, the optical liquid in the cavity drives first light
Learn glass and move forward and backward position relative to second optical glass, and then adjust first optical glass and second light
Learn the thickness of the optical liquid between glass.
Preferably, the optical liquid eyeglass includes coaxial mounted first optical glass and the second optical glass, described
First optical glass can move forward and backward position relative to second optical glass；First optical glass and second light
Learn glass and form a cavity, the cavity interior sealing has optical liquid, and the optical liquid uses organic optical film coated；
The adjusting means is by applying the normal pressure or negative pressure of different value to first optical glass, described in control
First optical glass moves forward and backward position relative to second optical glass, and the both sides up and down of the organic optical film follow
First optical glass moves forward and backward together, drives the left and right sides of the organic optical film to middle shrinkage or to both sides
Compression, and then adjust and be coated on the height of optical liquid in the organic optical film and first optical glass and described
The distance between second optical glass is consistent.
Preferably, it is coated with first optical glass and/or second optical glass anti-reflection or filter action
Optical thin film.
Technique according to the invention scheme, an optical liquid eyeglass is set between camera lens and imaging surface, according to ambient light
The thickness of strong change regulation optical liquid eyeglass, changes the focal plane of image formation by rays, realizes the camera lens under different light conditions
Compensation it is confocal.Meanwhile by contrasting the modulating transfer function value of the image obtained under different optical liquid lens thicknesses, obtain
The maximum image of current environment light intensity modulated transfer function values, i.e. most clearly image, determine the optics corresponding to the image
Liquid lens thickness, the thickness of adjustment optical liquid eyeglass enable camera lens module that clearly image is presented in imaging surface.By this
Technical scheme, it can guarantee that under different illumination conditions, camera lens module can obtain most clearly image in real time, solve different light
Camera lens module is imaged unsharp problem under intensity.
Brief description of the drawings
Fig. 1 is that a kind of camera lens module of one embodiment of the invention compensates confocal system；
A kind of structure chart of optical liquid eyeglass of Fig. 2 one embodiment of the invention；
The structure chart of another optical liquid eyeglass of Fig. 3 one embodiment of the invention；
A kind of camera lens module of Fig. 4 one embodiment of the invention compensates confocal method.
Embodiment
In order to solve the technical problem proposed in background technology, present inventor is expected by adjusting liquid lens
Thickness change image formation by rays focal plane, make camera lens daytime visible ray and night infrared light different condition under focal plane position
Can reach consistent, day and night can into clearly as.To make the object, technical solutions and advantages of the present invention more clear
Chu, embodiments of the present invention are described in further detail below in conjunction with accompanying drawing.
Embodiment one
Fig. 1 is that a kind of camera lens module of one embodiment of the invention compensates confocal system, referring to Fig. 1, the camera lens module
Including camera lens 110 and imaging surface 160 and compensation confocal system.The compensation confocal system includes digital signal processing module 150, optics
Liquid lens 120, adjusting means 130 and photosensitive sensor 140.
Photosensitive sensor 140 is arranged on around camera lens module, for gathering environmental light intensity signal in real time.Photosensitive sensor
Ambient light sensor is provided with 140, light intensity change that can in real time in monitoring of environmental, and the light intensity gathered in real time is believed
Number send to digital signal processing module 150.
Digital signal processing module 150, for receiving the light intensity signal of the transmission of photosensitive sensor 140, carry out after handling accordingly
Corresponding control signal is produced to send to adjusting means 130.Letter is transmitted in the modulation that digital signal processing module 150 is additionally operable to calculate image
Numerical value, and determine the maximum image of modulating transfer function value.Processor is provided with digital signal processing module 150, can be handled a variety of
Data signal and digital picture.
Optical liquid eyeglass 120, by two panels optical glass, optical liquid and the organic optical film group for sealing optical liquid
Into optical glass can move up and down the thickness for changing optical liquid eyeglass 120.Optical liquid eyeglass 120 is arranged on camera lens 110
Between imaging surface 160, its thickness can be adjusted by adjusting means 130.
Adjusting means 130, for adjusting the thickness of optical liquid eyeglass 120.Specifically, can be set in adjusting means 130
Set driver, certain pressure can be produced, pass through the thickness of the effect regulation optical liquid eyeglass 120 of pressure.
The digital signal processing module 150 of the compensation confocal system exists with photosensitive sensor 140 and adjusting means 130 to be electrically connected
Relation, necessary data transfer can be carried out with it.Photosensitive sensor 140 collects the light intensity signal in environment, by with number
Electrical connection between word processing module sends the light intensity signal to digital signal processing module 150.Digital signal processing module 150 obtains
The light intensity signal is taken, by it compared with the preceding light intensity signal once obtained, judges environmental light intensity changing rule.Specifically,
The light intensity signal of this acquisition and the last light intensity signal work obtained is poor, if the difference is more than the maximum of preset threshold range
Value, illustrate that the light intensity signal of environment becomes strong, digital signal processing module 150 produces the control of the thickness of increase optical liquid eyeglass 120
Signal, if the difference is less than the minimum value of preset threshold range, illustrate that the light intensity signal of environment dies down, digital signal processing module 150
Produce the control signal for the thickness for reducing optical liquid eyeglass 120.Digital signal processing module 150 by caused control signal send to
Adjusting means 130, adjusting means 130 receives control signal, and produces correspondingly sized driving force, adjusts optical liquid eyeglass
120 thickness increase reduces.
The preset threshold range for setting light intensity to change, ensure that the change of light intensity within the specific limits will not cause optical liquid
The thickness change of eyeglass, avoid causing light intensity decreasing or extra light source to cause what light intensity enhancing was brought because object shuts out the light
Faulty operation.When the change of light intensity is beyond preset threshold range, illustrates that ambient light is changed really, such as enter from daytime
Enter night, now just carry out the thickness adjustment of optical liquid eyeglass, improve the accuracy of camera lens module imaging clearly.
In one embodiment of the invention, during the change of the thickness of optical liquid eyeglass 120, the imaging of camera lens module
Face 160 automatically snaps image and preserved.Digital signal processing module 150 obtains one group of image that the shooting of imaging surface 160 preserves, and calculates every
Open the modulating transfer function value of image.Modulation transfer function is the side that current evaluation camera lens module imaging definition compares science
Method, the modulating transfer function value of image is calculated, image definition can be drawn.Modulation of the digital signal processing module 150 from each image
Determine the maximum image of modulating transfer function value in transfer function values, controling adjustment device 130 is by optical liquid eyeglass 120
Opening position corresponding with the maximum of modulation transfer function is arrived in thickness regulation, and the compensation for completing camera lens module is confocal.
Embodiment two
Fig. 2 is a kind of structure chart of optical liquid eyeglass of one embodiment of the invention, referring to Fig. 2, the light of the present embodiment
Learning liquid lens includes the first optical glass 121 and the second optical glass 122, and the first optical glass 121 can move along wall,
Moving direction is that relative second optical glass 122 is movable.Second optical glass 122 is fixed, the first optical glass 121
It is movable, you can to change the thickness of optical liquid eyeglass.
First optical glass 121 and the second optical glass 122 are coaxially mounted in camera lens module, the wall structure with surrounding
A cavity is formed, is full of optical liquid 124 in the cavity.The colourless water or oiliness of high light transmittance can be selected in the optical liquid 124
Liquid.
The optical liquid eyeglass also includes an additional cavity 125, and a certain amount of optical liquid is also stored with the additional cavity 125
124, the additional cavity 125 is connected by a connection channel with cavity.When the first optical glass 121 moves, optical liquid 124 is logical
Interface channel is crossed, is flowed between additional cavity 125 and cavity, guarantee is constantly full of cavity.It is no in additional cavity 125 to be full of optics
Liquid 124, it is to reserve a certain size space, the storage Mobile Space-time intracavitary of the first optical glass 121 is extruded outflow
Optical liquid.
Preferably, additional cavity 125 is coated with the optical liquid in cavity by organic optical film 123, by additional cavity 125 with
Optical liquid in cavity seals to form entirety.The organic optical film 123 coats cavity and the optical liquid in additional cavity, can
To increase the sealing property of optical glass.The preferably colourless high light transmittance of organic optical film 123, deformable Plastic film,
Ensure the transmissivity of light.
Adjusting means 130 is connected with additional cavity 125, and caused power is acted on the optical liquid in additional cavity 125.Regulation
Device 130 applies normal pressure on the optical liquid 124 in additional cavity 125, promotes the optical liquid 124 in additional cavity 125 to flow
Entering cavity, the liquid in cavity, which increases, promotes the first optical glass 121 to be moved to the direction away from the second optical glass 122, from
And increase the thickness of optical liquid eyeglass.Adjusting means 130 applies negative pressure, increases the space of additional cavity 124, optical liquid
124 are back to additional cavity 125 by interface channel out of cavity, and the liquid in cavity is reduced so that the first optical glass 121 with
Moved with the flowing of optical liquid 124 to close to the direction of the second optical glass 122, so as to reduce the thickness of optical liquid eyeglass
Degree.
The pressure size and direction that adjusting means 130 applies can be adjusted, and be increased with adaptive optics liquid lens thickness
Or the change requirement reduced.Specifically, adjusting means 130 produces certain pressure by driver, can be driven by adjusting
The electric current of device, it is set to produce different pressure.
Embodiment three
Fig. 3 is the structure chart of another optical liquid eyeglass of one embodiment of the invention, referring to Fig. 3, the present embodiment
Optical liquid eyeglass includes the first optical glass 121 and the second optical glass 122, and a cavity is formed with the wall structure of surrounding.
First optical glass 121 can move along wall, and the second optical glass 122 is fixed.First optical glass 121 is relative with the
Two optical glass 122 are movable, change the thickness of optical liquid eyeglass.It is sealed with cavity with organic optical film 123
A certain amount of optical liquid 124.Organic optical film is fixed on the first optical glass 121, with the first optical glass 121
Move and change height.It is different from the optical liquid eyeglass in a upper embodiment, there is no additional cavity 125 and connection in the embodiment
Passage.
In the present embodiment, adjusting means 130 is directly connected with the first optical glass 121, and pressure is acted on into the first light
Learn on glass 121.Adjusting means 130 applies normal pressure to the first optical glass 121, and the first optical glass 121 moves forward, far
From the second optical glass 122, with moving together, drive left and right sides has the organic optical film 123 being fixed thereon
Machine optical thin film 123 ensure that and optics liquid is full of between the first optical glass 121 and the second optical glass 122 to middle shrinkage
Body.Adjusting means 130 applies negative pressure to the first optical glass 121, and the first optical glass 121 is moved rearwards, close to the second light
Glass 122 is learned, the organic optical film 123 being fixed thereon promotes organic light of left and right sides with being moved rearwards together
Film 123 is learned to compress to both sides.The optical liquid eyeglass of the embodiment can make optical liquid 124 in the case of a certain amount of, with
The movement of the first optical glass 121 and change the form between optical glass, without increasing or decreasing optical liquid 124.
Using the optical liquid eyeglass of the present embodiment, it is convenient to omit additional cavity and interface channel mould in a upper embodiment
Block, make the structure of camera lens module simpler compact.
In one embodiment of the invention, in order that camera lens module has the saturating of certain optical filtering performance or increasing light
Rate is penetrated, camera lens module is applied under special scenes, unnecessary light is excluded and shadow is caused to the image quality of camera lens module
Ring, plated on the first optical glass and the second optical glass and be formed with anti-reflection or filter action optical thin film.Specifically, this is optically thin
Film can be the light filter film of certain light, such as blue light filter coating or infrared light filter coating etc. or anti-reflection film, increase
The transmissivity of particular light ray, camera lens module is set to pass through more light.
Example IV
Fig. 4 is that a kind of camera lens module of one embodiment of the invention compensates confocal method.Referring to Fig. 4, the present embodiment
Camera lens module, which compensates confocal method, to be included：
Step S410, obtain the light intensity signal of photosensitive sensor collection.
In the step, the light intensity signal that photosensitive sensor gathers in a secondary environment at regular intervals is sent to digital processing
Module, digital signal processing module obtain the light intensity signal and handled.
Whether step S420, this light intensity signal are more than last light intensity signal, if step S431 is then performed, if otherwise
Perform step S432.
The light intensity signal that this is obtained compared with the light intensity signal that the last time obtains, is judged ring by digital signal processing module
The strong and weak change of environmental light.Specifically, it is poor the light intensity signal of this acquisition to be made with the last light intensity signal obtained, if the difference
Value illustrates that the light intensity of environment becomes strong, digital signal processing module produces increase optical liquid mirror more than the maximum of preset threshold range
The control signal of piece thickness is sent to adjusting means；If the difference is less than the minimum value of preset threshold range, illustrate environmental light intensity
Die down, the control signal that digital signal processing module produces reduction optical liquid lens thickness is sent to adjusting means.
Step S431, controling adjustment device increase the thickness of optical liquid eyeglass.
In the step, this light intensity signal obtained is more than the last light intensity signal obtained, and environmental light intensity becomes strong.Regulation
Device receives the signal that digital processing signal is sent, and increases optical liquid lens thickness.
Step S432, controling adjustment device reduce the thickness of optical liquid eyeglass.
In the step, this light intensity signal obtained is less than the last light intensity signal obtained, and environmental light intensity dies down.Regulation
Device receives the control signal that digital processing signal is sent, and reduces optical liquid lens thickness.
In one embodiment of the invention, camera lens module, which compensates confocal method, also includes a feedback image-forming step.
First during optical liquid lens thickness changes, one group of image of imaging surface is obtained.Specifically, adjusting means root
The control signal sent according to digital processing signal, thickness corresponding with control signal is arrived into the thickness regulation of optical liquid eyeglass.
During thickness change, camera lens module captured in real-time image, imaging surface automated imaging preserves, and digital signal processing module obtains imaging
One group of image that face preserves, analyze the definition of image.
Secondly, the modulating transfer function value of every image is calculated, determines the maximum image of modulating transfer function value.Modulation passes
Delivery function is the method for the evaluation camera lens module imaging definition of current relatively science, by the modulation transfer function for calculating image
Value, you can judge the definition of image, obtain camera lens module image quality.Modulating transfer function value illustrates that image is got over closer to 1
Clearly, camera lens module image quality is better.Specifically, the modulating transfer function value of image can be obtained using prior art, this
Place repeats no more.
Finally, controling adjustment device is by corresponding to the thickness regulation to the maximum of modulation transfer function of optical liquid eyeglass
Opening position, realize that the compensation of camera lens module is confocal.Specifically, digital signal processing module determines the figure of the maximum of modulation transfer function
As after, produce corresponding control signal and send to adjusting means, the thickness of controling adjustment device regulation optical liquid eyeglass, make it
Thickness is equal with the optical liquid lens thickness during image of acquirement modulation transfer function maximum, so that camera lens module is constantly
Obtain most clearly image.
In one embodiment of the invention, optical liquid eyeglass includes coaxial mounted first optical glass and the second light
Glass is learned, the second optical glass is fixed, and the first optical glass can move forward and backward position relative to the second optical glass；First
Optical glass and the second optical glass and the wall of surrounding form a cavity, and cavity passes through a connection channel and an additional cavity phase
Even, cavity using one layer of organic optical diaphragm seal with additional cavity, having optical liquid.Adjusting means passes through into additional cavity
Optical liquid applies the normal pressure or negative pressure of different value, controls the optical liquid in additional cavity to flow in or out cavity, cavity
Interior optical liquid drives the first optical glass to move forward and backward position relative to the second optical glass, and then adjusts the first optics glass
The thickness of optical liquid between glass and the second optical glass.
In a preferred embodiment of the invention, using the light in one layer of organic optical film coated cavity and additional cavity
Liquid is learned, increases the sealing property of optical glass.
In another embodiment of the present invention, optical liquid eyeglass includes coaxial mounted first optical glass and second
Optical glass, the first optical glass can move forward and backward position relative to the second optical glass；First optical glass and the second optics
Glass forms a cavity, and cavity interior sealing has optical liquid, and optical liquid uses organic optical film coated；Adjusting means is led to
The normal pressure or negative pressure for applying different value to the first optical glass are crossed, the first optical glass of control is relative to the second optical glass
Movable position, the both sides up and down of organic optical film follow the first optical glass to move forward and backward together, drive organic optical
The left and right sides of film is compressed to middle shrinkage or to both sides, and then adjusts the optical liquid being coated in organic optical film
Height is consistent with the distance between the first optical glass and the second optical glass.
In some currently preferred embodiments of the present invention, on the first optical glass and second optical glass, Ke Yigen
According to the scene that uses of camera lens module, plating is formed with anti-reflection or filter action optical thin film.Specifically, the optical thin film is filter coating
Or anti-reflection film, make camera lens module that there is filtering functions, or the transmissivity of increase particular light ray, enable camera lens module through more
Light.Be coated with the camera lens module of optical thin film, can be applied under special scenes, exclude unnecessary light to camera lens module into
The influence brought as quality.
In summary, the technical scheme that the present invention is implemented, sets an optical liquid eyeglass between camera lens and imaging surface, leads to
The thickness of optical liquid eyeglass is overregulated, changes the focal plane of image formation by rays.By contrasting under different optical liquid lens thicknesses
The modulating transfer function value of the image of acquisition, obtain the maximum image of current environment light intensity modulated transfer function values, i.e., it is most clear
Clear image, determines the optical liquid lens thickness corresponding to the image, and the thickness of adjustment optical liquid eyeglass makes camera lens module
Clearly image can be presented in imaging surface.By the technical scheme, it can guarantee that under different illumination conditions, camera lens module can be in real time
Most clearly image is obtained, camera lens module under different light intensities is solved and is imaged unsharp problem.
Technical scheme gives the optical liquid eyeglass of two kinds of structures.The optical liquid mirror of the first structure
Piece realizes the thickness for changing optical liquid eyeglass by the optical liquid between increasing or decreasing two panels optical glass.Second
The optical liquid eyeglass of structure is by controlling the movement of optical glass to realize the change of lens thickness.Two schemes can be according to ring
The change of environmental light change control optical liquid lens thickness, so that camera lens module obtains clearly image.The first scheme
Optical liquid eyeglass be easily achieved control, the structure of second scheme is simple, small volume.
The foregoing is only a specific embodiment of the invention, under the above-mentioned teaching of the present invention, those skilled in the art
Other improvement or deformation can be carried out on the basis of above-described embodiment.It will be understood by those skilled in the art that above-mentioned tool
The purpose of the present invention is simply preferably explained in body description, and protection scope of the present invention should be defined by scope of the claims.
Claims (10)
1. a kind of camera lens module compensates confocal system, the camera lens module includes camera lens and imaging surface, it is characterised in that described
System includes：Digital signal processing module, be arranged on the adjustable optical liquid eyeglass of thickness between the camera lens and the imaging surface,
The adjusting means of thickness regulation is carried out to the optical liquid eyeglass, is arranged on around the camera lens module collection ambient light in real time
The photosensitive sensor of strong signal；
The digital signal processing module electrically connects the photosensitive sensor and the adjusting means, obtains the photosensitive sensor collection
Environmental light intensity signal, by this acquisition environmental light intensity signal compared with the preceding environmental light intensity signal once obtained, if
Environmental light intensity signal becomes strong, then controls the adjusting means to increase the thickness of the optical liquid eyeglass；If environmental light intensity signal
Die down, then control the adjusting means to reduce the thickness of the optical liquid eyeglass.
2. system according to claim 1, it is characterised in that during the thickness of the optical liquid eyeglass changes,
The digital signal processing module obtains one group of image of the imaging surface, calculates the modulating transfer function value of every image, therefrom really
The maximum image of modulating transfer function value is made, controls the adjusting means by the thickness regulation of the optical liquid eyeglass to obtaining
Obtain the corresponding position of the maximum image of the modulating transfer function value.
3. system according to claim 1, it is characterised in that the optical liquid eyeglass includes coaxial mounted first light
Position can be moved forward and backward relative to second optical glass by learning glass and the second optical glass, first optical glass；Institute
State the first optical glass and second optical glass forms a cavity, the cavity passes through a connection channel and an additional cavity phase
Even, the cavity has optical liquid with the additional cavity interior sealing；
The adjusting means applies the normal pressure or negative pressure of different value by the optical liquid into the additional cavity, controls institute
State the optical liquid in additional cavity and flow in or out the cavity, the optical liquid in the cavity drives the first optics glass
Glass moves forward and backward position relative to second optical glass, and then adjusts first optical glass and the second optics glass
The thickness of optical liquid between glass.
4. system according to claim 1, it is characterised in that the optical liquid eyeglass includes coaxial mounted first light
Position can be moved forward and backward relative to second optical glass by learning glass and the second optical glass, first optical glass；Institute
State the first optical glass and second optical glass forms a cavity, the cavity interior sealing has optical liquid, and the light
Learn liquid and use organic optical film coated；
The adjusting means is by the normal pressure or negative pressure of first optical glass application different value, controlling described first
Optical glass moves forward and backward position relative to second optical glass, and two sides up and down of the organic optical film follow institute
State the first optical glass to move together, drive the left and right sides of the organic optical film to middle shrinkage or pressed to both sides
Contracting, and then adjust and be coated on the height of optical liquid in the organic optical film and first optical glass and described the
The distance between two optical glass are consistent.
5. the system according to claim 3 or 4, it is characterised in that first optical glass and/or second optics
Plating is formed with anti-reflection or filter action optical thin film on glass.
6. a kind of camera lens module compensates confocal method, it is characterised in that methods described includes：
The adjustable optical liquid eyeglass of thickness is set between the camera lens and imaging surface of camera lens module, is the optical liquid mirror
Piece sets the adjusting means for carrying out thickness regulation, and sets photosensitive sensor to gather ambient light in real time around the camera lens module
Strong signal；
The environmental light intensity signal of the photosensitive sensor collection is obtained, the environmental light intensity signal of this acquisition is once obtained with preceding
Environmental light intensity signal be compared, if environmental light intensity signal becomes strong, control the adjusting means to increase the optical liquid
The thickness of eyeglass；If environmental light intensity signal weaker, the adjusting means is controlled to reduce the thickness of the optical liquid eyeglass.
7. according to the method for claim 6, it is characterised in that during the thickness of the optical liquid eyeglass changes,
One group of image of the imaging surface is obtained, the modulating transfer function value of every image is calculated, therefrom determines modulation transfer function
It is worth maximum image, controls thickness regulation of the adjusting means by the optical liquid eyeglass to transmit letter to the modulation is obtained
The corresponding position of the maximum image of numerical value.
8. according to the method for claim 6, it is characterised in that the optical liquid eyeglass includes coaxial mounted first light
Position can be moved forward and backward relative to second optical glass by learning glass and the second optical glass, first optical glass；Institute
State the first optical glass and second optical glass forms a cavity, the cavity passes through a connection channel and an additional cavity phase
Even, the cavity has optical liquid with the additional cavity interior sealing；
The adjusting means applies the normal pressure or negative pressure of different value by the optical liquid into the additional cavity, controls institute
State the optical liquid in additional cavity and flow in or out the cavity, the optical liquid in the cavity drives the first optics glass
Glass moves forward and backward position relative to second optical glass, and then adjusts first optical glass and the second optics glass
The thickness of optical liquid between glass.
9. according to the method for claim 6, it is characterised in that the optical liquid eyeglass includes coaxial mounted first light
Position can be moved forward and backward relative to second optical glass by learning glass and the second optical glass, first optical glass；Institute
State the first optical glass and second optical glass forms a cavity, the cavity interior sealing has optical liquid, and the light
Learn liquid and use organic optical film coated；
The adjusting means is by the normal pressure or negative pressure of first optical glass application different value, controlling described first
Optical glass moves forward and backward position relative to second optical glass, and the both sides up and down of the organic optical film follow described
First optical glass moves forward and backward together, drives the left and right sides of the organic optical film to middle shrinkage or is pressed to both sides
Contracting, and then adjust and be coated on the height of optical liquid in the organic optical film and first optical glass and described the
The distance between two optical glass are consistent.
10. the method according to claim 7 or 9, it is characterised in that in first optical glass and/or described second
Anti-reflection or filter action optical thin film is coated with optical glass.
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