CN107561684A - Optical filter, camera lens module and imaging modules - Google Patents
Optical filter, camera lens module and imaging modules Download PDFInfo
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- CN107561684A CN107561684A CN201710915386.2A CN201710915386A CN107561684A CN 107561684 A CN107561684 A CN 107561684A CN 201710915386 A CN201710915386 A CN 201710915386A CN 107561684 A CN107561684 A CN 107561684A
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Abstract
The invention discloses a kind of optical filter.Optical filter includes the first eyeglass and the second eyeglass that interval is oppositely arranged.High reflection film layer is provided with first eyeglass and relative two surfaces of the second eyeglass.First eyeglass and second eyeglass can relative motion to change the gap length between first eyeglass and second eyeglass, to enable optical filter to switch between visible mode and infrared optical mode.In visible mode, optical filter only allows visible ray to pass through；In infrared optical mode, optical filter only allows infrared light to pass through.The invention also discloses a kind of camera lens module and imaging modules.Optical filter, camera lens module and the imaging modules of embodiment of the present invention are used as optical filter using two spaced eyeglasses be arrangeding in parallel, it may be such that optical filter can be by infrared light and visible ray, so as to only need the function of visible light shooting can be achieved using a camera and infrared light is shot by changing the gap between two eyeglasses.
Description
Technical field
The present invention relates to technical field of imaging, more particularly to a kind of optical filter, camera lens module and imaging modules.
Background technology
When iris recognition technology is applied on the mobile apparatus, because iris recognition needs to be operated in infrared band, therefore, move
Need specially to set an infrared camera to realize iris identifying function in dynamic equipment.But which not only adds hardware into
This, also reduces the free space of the screen of mobile device.
The content of the invention
The embodiment provides a kind of optical filter, camera lens module and imaging modules.
The optical filter of embodiment of the present invention includes the first eyeglass and the second eyeglass that interval is oppositely arranged, first mirror
High reflection film layer, first eyeglass and second eyeglass are provided with piece and relative two surfaces of second eyeglass
Can relative motion to change the gap length between first eyeglass and second eyeglass, to enable the optical filter
Enough to switch between visible mode and infrared optical mode, in the visible mode, the optical filter only allows visible ray to lead to
Cross, in the infrared optical mode, the optical filter only allows infrared light to pass through.
The camera lens module of embodiment of the present invention includes microscope base, the lens barrel on the microscope base and above-mentioned filter
Mating plate.The optical filter is arranged in the lens barrel or the microscope base.
The imaging modules of embodiment of the present invention include：Substrate, imaging sensor on the substrate and above-mentioned is set
Camera lens module.The camera lens module is fixed on the substrate, and described image sensor is housed in the camera lens module.
Optical filter, camera lens module and the imaging modules of embodiment of the present invention use two spaced mirrors be arrangeding in parallel
Piece may be such that optical filter can be by infrared light and visible as optical filter, by changing the gap length between two eyeglasses
Light, so as to only need the function of visible light shooting can be achieved using a camera and infrared light is shot.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the structural representation of the optical filter of some embodiments of the present invention.
Fig. 2 is the structural representation of the optical filter of some embodiments of the present invention.
Fig. 3 is the structural representation of the camera lens module of some embodiments of the present invention.
Fig. 4 is the structural representation of the imaging modules of some embodiments of the present invention.
Fig. 5 is the optical filtering part of some embodiments of the present invention and the structural representation of actuator.
Embodiment
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise " are based on orientation shown in the drawings or position relationship, are for only for ease of
Description is of the invention to be described with simplified, rather than the device or element of instruction or hint meaning must be with specific orientation, Yi Te
Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second " are only used for
Purpose is described, and it is not intended that instruction or hint relative importance or the implicit quantity for indicating indicated technical characteristic.
Thus, " first " is defined, the feature of " second " can be expressed or implicitly includes one or more feature.
In description of the invention, " multiple " are meant that two or more, unless otherwise specifically defined.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection or can mutually communicate；Can be joined directly together, can also be by between intermediary
Connect connected, can be connection or the interaction relationship of two elements of two element internals.For the ordinary skill of this area
For personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it " under "
Can directly it be contacted including the first and second features, it is not directly to contact but pass through it that can also include the first and second features
Between other characterisation contact.Moreover, fisrt feature second feature " on ", " top " and " above " to include first special
Sign is directly over second feature and oblique upper, or is merely representative of fisrt feature level height and is higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " fisrt feature that includes are immediately below second feature and obliquely downward, or be merely representative of
Fisrt feature level height is less than second feature.
Following disclosure provides many different embodiments or example is used for realizing the different structure of the present invention.In order to
Simplify disclosure of the invention, hereinafter the part and setting of specific examples are described.Certainly, they are only example, and
And purpose does not lie in the limitation present invention.In addition, the present invention can in different examples repeat reference numerals and/or reference letter,
This repetition is for purposes of simplicity and clarity, between itself not indicating discussed various embodiments and/or setting
Relation.In addition, the invention provides various specific techniques and material examples, but those of ordinary skill in the art can be with
Recognize the application of other techniques and/or the use of other materials.
Referring to Fig. 1, the optical filter 10 of embodiment of the present invention includes the first eyeglass 11 and second that interval is oppositely arranged
Eyeglass 12.High reflection film layer 14 is provided with first eyeglass 11 and relative two surfaces of the second eyeglass 12.First eyeglass 11
With the second eyeglass 12 can relative motion to change gap d between the first eyeglass 11 and the second eyeglass 12, to cause optical filter 10
It can switch between visible mode and infrared optical mode.In visible mode, optical filter 10 only allows visible ray to pass through.
Under infrared optical mode, optical filter 10 only allows infrared light to pass through.
Specifically, the first eyeglass 11 and the second eyeglass 12 can be plate glass or quartz plate.First eyeglass 11 and second
Eyeglass 12 is parallel to each other and is spaced and is oppositely arranged, and forms Fabry-Perot interferometer.Wherein, the first eyeglass 11 and the second eyeglass
Space between 12 is formed as Fabry-Perot-type cavity.First eyeglass 11 is provided with two surfaces relative with the second eyeglass 12
High reflection film layer 14, high reflection film layer 14 may include metal film or multilayer dielectric film.Wherein, metal film can be silverskin, aluminium film
Deng.
After incident light comprising multi-wavelength enters Fabry-Perot-type cavity by the first eyeglass 11, wavelength meets resonant bars
Very high peak value occurs in the light of part in transmission spectrum, correspond to high-transmission rate, and therefore, this kind of light can be in Fabry-Perot
Intracavitary carries out multiple reflections and forms interfering beam, is gone out finally by the second eyeglass 12 is wholly transmissive, and is unsatisfactory for resonance condition
Light can not pass through the second eyeglass 12.Light is between the transmissivity of Fabry-Perot-type cavity and the first eyeglass 11 and the second eyeglass 12
Gap it is relevant, it is generally the case that resonance condition refers to the half of the width (d) in gap for the wavelength (λ) of light, i.e. d
=λ/2, this time have higher transmissivity.Therefore, if adjusting the big of the gap between the first eyeglass 11 and the second eyeglass 12
It is small, you can to realize the filtering of a variety of light.
The optical filter 10 of embodiment of the present invention is mainly used in by visible ray and infrared light.By optical filter 10 be used for into
During as in module 1000, if visual light imaging can be achieved to obtain coloured image by visible ray in optical filter 10；If optical filter
10 by infrared light, then can be achieved infrared imaging to obtain infrared image.Further, if imaging modules 1000 are applied to match somebody with somebody
It is equipped with the mobile device of iris identifying function, now mobile device only needs to set an imaging modules 1000 that colour can be achieved
The shooting of image taking and iris image, so as to realize the multiplexing of visual light imaging and infrared imaging, reduce mobile device
Hardware cost, while increase the free space of the screen of mobile device.
In some embodiments, under visible mode, it is seen that light includes feux rouges, green glow and blue light.
If the feux rouges that optical filter 10 only allows in visible ray by when, the span in gap is [310,380] nanometer.Namely
To say, when optical filter 10 only passes through feux rouges, the value in gap can be 310 nanometers, 335 nanometers, 350 nanometers, 366 nanometers, 380
Nanometer is equivalent.Because the wave-length coverage of feux rouges in visible ray is 620~760 nanometers, therefore, based on the resonance condition of d=λ/2,
The span in gap should be between 310~380 nanometers.
If the green glow that optical filter 10 only allows in visible ray by when, the span in gap is [245,290] nanometer.Namely
To say, when optical filter 10 only passes through green glow, the value in gap can be 245 nanometers, 256 nanometers, 274 nanometers, 285 nanometers, 290
Nanometer is equivalent.Because the wave-length coverage of green glow in visible ray is 490~580 nanometers, therefore, based on the resonance condition of d=λ/2,
The span in gap should be between 245~290 nanometers.
If the blue light that optical filter 10 only allows in visible ray by when, span [225, the 237.5] nanometer in gap.Namely
To say, when optical filter 10 only passes through blue light, the value in gap can be 225 nanometers, 229 nanometers, 230 nanometers, 235 nanometers,
237.5 nanometer, equivalence.Because the wave-length coverage of blue light in visible ray is 450~475 nanometers, therefore, the resonance based on d=λ/2
Condition, the span in gap should be between 225~237.5 nanometers.
In some embodiments, under infrared optical mode, optical filter 10 only allows infrared light to pass through the now value in gap
Scope is [405,425] nanometer or 470 nanometers.In other words, the span in gap can be 405 nanometers, 413 nanometers, 418.5
Nanometer, 422 nanometers, 425 nanometers, 270 nanometers of equivalences.Between being 770 nanometers to 1 millimeter due to the wave-length coverage of infrared light, and
The wavelength of conventional infrared light is 810~850 nanometers or 940 nanometers, therefore, based on the resonance condition of d=λ/2, gap
Between span should be 405~425 nanometers or value is 470 nanometers.
Fig. 1 and Fig. 2 are referred to, in some embodiments, optical filter 10 also includes actuator 15.Actuator 15 is used to drive
Dynamic first eyeglass 11 and the second eyeglass 12 relatively move.
Specifically, actuator 15 can be magnetic deformation actuator.Magnetostriction brake utilizes the mangneto of magnetic material
Expansion performance, after to material extra electric field, magnetic material can stretch or shrink.Therefore, by magnetic deformation actuator and first
When the eyeglass 12 of eyeglass 11 or second connects, magnetic deformation actuator can drive the first eyeglass 11 or the second eyeglass 12 by flexible
Movement is to change the size in the gap between the first eyeglass 11 and the second eyeglass 12, so as to realize that the tuning of light is filtered.
Referring again to Fig. 1, in some embodiments, optical filter 10 also includes the 3rd eyeglass 13.First eyeglass 11 is located at
Between 3rd eyeglass 13 and the second eyeglass 12.Second eyeglass, 12 relative 3rd eyeglass 13 is fixedly installed, and actuator 15 is fixedly installed
On the 3rd eyeglass 13, actuator 15 is connected with the first eyeglass 11.Actuator 15 is used to drive the first eyeglass 11 to move to change
Gap length.
Referring to Fig. 2, in some embodiments, the first eyeglass 11 is fixedly installed with relative 3rd eyeglass 13.Actuator
15 are fixedly installed on the 3rd eyeglass 13 and are connected with the second eyeglass 12.Actuator 15 is used to drive the second eyeglass 12 to move to change
Varied clearance size.
In this way, actuator 15 can drive the first eyeglass 11 or the second eyeglass 12 to move so as to change the first eyeglass 11 and second
Gap between eyeglass 12 is to realize that the tuning of light is filtered.
Incorporated by reference to Fig. 1, in some embodiments, optical filter 10 is operated under visible mode for visual light imaging
When, actuator 15 needs to change several times the gap of optical filter 10 so as to obtain the value of the light of a variety of colors.For example, actuator 15
Change the gap of optical filter 10 in three times to be received respectively by wavelength as 700 nanometers (i.e. feux rouges), 540 nanometers of (i.e. green glow), 460
The light of rice (i.e. blue light), the light of these three colors can be used for follow-up imaging.Actuator can also divide 6 change optical filters 10
Gap using respectively by wavelength as 700 nanometers, 740 nanometers, 510 nanometers, 550 nanometers, 460 nanometers, 480 nanometers of light, its
In, wavelength is that 700 nanometers and 740 nanometers of light is feux rouges, and wavelength is green glow for 510 nanometers and 550 nanometers of light, wavelength
Light for 460 nanometers and 480 nanometers is blue light.In this way, optical filter not only can be by feux rouges, green glow and blue light, can also be to dividing
It is other that feux rouges, green glow and blue light are layered, to obtain more color informations, be advantageous to follow-up imaging so that most
The color of the image obtained eventually is more true and abundant.
Incorporated by reference to Fig. 1 and Fig. 4, in some embodiments, the gap of optical filter 10, which can also be, intermittently persistently to be become
Change.In other words, when the value in gap is [310,380] nanometer, the gap of optical filter 10 is i.e. lasting since 380 nanometers
Change, and pause changes when reaching in gap 310 nanometers, to cause optical filter 10 by wavelength as the institute in 620~760 nanometers
There is feux rouges, during this period, sensitization function is performed with the imaging sensor 200 of the cooperating of optical filter 10.Then, gap continues to change
Become until the value in gap is 290 nanometer, during this period, closed with the imaging sensor 200 of the cooperating of optical filter 10 photosensitive
Function.Then, gap continues change since 290 nanometers, and pause changes when reaching in gap 245 nanometers, to filter
Piece 10 during this period, is held by the green glow that wavelength is 490~580 nanometers with the imaging sensor 200 of the cooperating of optical filter 10
Row sensitization function.Then, gap continue change until gap value be 237.5 nanometers, during this period, coordinate with optical filter 10
The imaging sensor 200 of work closes sensitization function.Then, gap continues change since 237.5 nanometers, and reaches in gap
Suspend at 225 nanometers and change, to cause optical filter 10 by wavelength as 450~475 nanometers of blue light.In this way, entirely it is being imaged
Period, optical filter 10 can obtain the more feux rouges of light quantity, green glow and blue light, and therefore, the color information of acquisition is more so that final
The color of obtained image is more rich.
Please in conjunction with Fig. 1 and Fig. 4, in some embodiments, when optical filter 10 is operated under infrared optical mode, actuator
15 only can receive infrared light with imaging sensor 200 by the gap of optical filter 10 of change and utilize red
Outer light is imaged.For example, actuator 15 can change the gap length of optical filter 10 so that the value of gap length is received for 420
Rice, it is 840 nanometers of infrared light that imaging sensor 200, which can obtain wavelength, or actuator 15 can change between gap causes
The value of gap is 470 nanometers, and imaging sensor 200 can obtain the infrared light that wavelength is 940 nanometers.
In some embodiments, actuator 15 can also change the gap of optical filter 10 several times or lasting change filters
The gap of light device 10 so that optical filter 10 is by more infrared lights, in this way, imaging sensor 200 can obtain it is more infrared
Light, the quality being ultimately imaged are also more preferable.
Referring to Fig. 3, the camera lens module 100 of embodiment of the present invention includes microscope base 20, the mirror being attached on microscope base 20
Cylinder 30 and the as above optical filter 10 in any one embodiment.Optical filter 10 is arranged in lens barrel 30 or microscope base 20.
Referring again to Fig. 3, in some embodiments, camera lens module 100 also includes to focus lens 40.To focus lens 40 with
Optical filter 10 is located in same light path.Specifically, focus lens 40 are arranged in lens barrel 30, optical filter 10 may be provided at lens barrel 30
Or in microscope base 20.When optical filter 10 is located in microscope base 20, focus lens 40 are arranged on the top of optical filter 10, i.e. lens barrel 30
It is interior.When optical filter 10 is located in lens barrel 30, focus lens 40 may be provided above or below optical filter 10, in other words,
When optical filter 10 is located in lens barrel 30, extraneous light can be successively by optical filter 10 and to focus lens 40 or successively by focusing
Eyeglass 40 and optical filter 10.
In some embodiments, the number to focus lens 40 can be multiple.Camera lens module 100 can be zoom lens,
Specifically, camera lens module 100 also includes driver 50.It is multiple that focus lens 40 are connected with driver 50.The driving pair of driver 50
Focus lens 40 are moved to change the focusing focal length of camera lens module 100.In other embodiments, camera lens module 100 can also be
Tight shot, i.e. irremovable in lens barrel 30 to be fixed on to focus lens 40.
Referring to Fig. 4, the imaging modules 1000 of embodiment of the present invention include substrate 300, the figure of setting on the substrate 300
As the sensor 200 and as above camera lens module 100 in any one embodiment.Camera lens module 100 is fixed on the substrate 300.
Imaging sensor 200 is housed in camera lens module 100.
In this way, imaging sensor 200 receives by the light of optical filter 10 and generates corresponding electric signal output, by with imaging
The processor that module 1000 connects carries out signal transacting to obtain shooting image.When optical filter 10 is operated under visible mode
When, imaging sensor 200 receives feux rouges, green glow and blue light and exports corresponding electric signal several times respectively, and processor carries out letter
Number processing i.e. can obtain coloured image.When optical filter 10 is operated under infrared optical mode, imaging sensor 200 receives infrared light
And corresponding electric signal is exported, processor carries out signal transacting and can obtain infrared image.
Referring again to Fig. 4, in some embodiments, imaging modules 1000 also include optical filtering part 400.Optical filtering part 400 is set
Put in the upstream of the light path of imaging sensor 200.When optical filter 10 is in visible mode, optical filtering part 400 can for passing through
See light.When optical filter 10 is in infrared optical mode, optical filtering part 400 is used to pass through infrared light.
Wherein, optical filtering part 400 is arranged on the upstream of the light path of imaging sensor 200 and referred to：It is located at mirror in optical filter 10
When in seat 20, optical filtering part 400 is arranged between imaging sensor 200 and optical filter 10；It is located in optical filter 10 in lens barrel 30, and
When optical filter 10 is located at the lower section to focus lens, optical filtering part 400 is arranged on imaging sensor 200 and between focus lens 40；Or
Person, it is located in optical filter 10 in lens barrel 30, and when optical filter 10 is located to the tops of focus lens 40, optical filtering part 400 is arranged on figure
As sensor 200 and between focus lens 40；When optical filter 10 is located in lens barrel 30, optical filtering part 400 can also be provided at optical filtering
Piece 10 and between focus lens 40.
It is appreciated that the Fabry Perot interference cavity of first eyeglass 11 and the second eyeglass 12 composition is in ideal in optical filter 10
Under the conditions of can be only by visible ray and infrared light, now optical filter 10 accounts for actually to enter for the transmissivity of visible ray and infrared light
The ratio for penetrating light may be up to 99%, and the accounting of the transmissivity of the light of other wavelength is almost nil, now in visible ray or infrared
The boundary position of the wavelength of light, the perpendicular downward trend of accounting of the transmissivity of optical filter 10.But in practical operation, can
See the boundary position of the wavelength of light or infrared light, the accounting of the transmissivity of optical filter 10 is that have certain decline process.Namely
To say, now optical filter 10 can not only pass through visible or infrared light, moreover it is possible to marginally by except visible ray and infrared light it
The light of other outer wavelength.Therefore, to cause the light that imaging sensor 200 receives more accurate, with obtain preferably into
As quality, can an optical filtering part 400 be set in imaging modules 1000 to filter out other in addition to visible ray and infrared light
The light of wavelength.
Referring again to Fig. 4, in some embodiments, mounting hole 402, optical filtering part are offered on lens barrel 30 or microscope base 20
400 are movably mounted in mounting hole 402.Imaging modules 1000 also include actuator 500.Actuator 500, which is used to drive, to filter
Part 400 is moved to open or block mounting hole 402.
In some embodiments, actuator 500 includes stator 502 and rotor 504.Stator 502 be arranged on lens barrel 30 or
On the inwall of microscope base 20.One end of optical filtering part 400 is set on rotor 504.Rotor 504 drives optical filtering part 400 to rotate with opening
Or block mounting hole 402.
Specifically, when mounting hole 402 is opened on lens barrel 30, actuator 500 is correspondingly disposed on lens barrel 30, stator
502 are also correspondingly disposed on lens barrel 30；When mounting hole 402 is opened on microscope base 20, actuator 500 is correspondingly disposed in microscope base
On 20, stator 502 is also correspondingly disposed on microscope base 20.
In some embodiments, optical filtering part 400 is used for only by infrared light, and filters out the light of its all band.Filter
When mating plate 10 is in visible mode, actuator 500 drives optical filtering part 400 to open mounting hole 402.It is in infrared in optical filter 10
During optical mode, actuator 500 drives optical filtering part 400 to block mounting hole 402.
Specifically, when optical filter 10 is in visible mode, if now optical filtering part 400 is in the shape for blocking mounting hole 402
State, then actuator 500 drive optical filtering part 400 to move so as to open mounting hole 402 so that by the visible ray of optical filter 10 via
Mounting hole 402 is projected directly on imaging sensor 200；If now optical filtering part 400 does not block mounting hole 402, actuator
500 do not act, and are directly projected by the visible ray of optical filter 10 via mounting hole 402 on imaging sensor 200.Filtering
When piece 10 is in infrared optical mode, if now optical filtering part 400 is in the state for blocking mounting hole 402, actuator 500 is not done
Make, infrared light by optical filter 10 after optical filtering part 400 via projecting on imaging sensor 200；If now optical filtering part 400 is not
Mounting hole 402 is blocked, then actuator 500 drives optical filtering part 400 to move so as to shelter from mounting hole 402, so as to pass through optical filter
10 infrared light after optical filtering part 400 via projecting on imaging sensor 200.
In some embodiments, optical filtering part 400 is used for only by visible ray, and filters out the light of its all band.Filter
When mating plate 10 is in visible mode, actuator 500 drives optical filtering part 400 to block mounting hole 402.It is in infrared in optical filter 10
During optical mode, actuator 500 drives optical filtering part 400 to open mounting hole 402.
Specifically, when optical filter 10 is in visible mode, if now optical filtering part 400 be in block mounting hole 402
State, then actuator 500 do not act, the visible ray by optical filter 10 after optical filtering part 400 via projecting imaging sensor
On 200；If now optical filtering part 400 does not block mounting hole 402, actuator 500 drives optical filtering part 400 to move so as to block peace
Hole 402 is filled, so as to be projected by the visible ray of optical filter 10 via optical filtering part 400 on imaging sensor 200.In optical filter 10
During in infrared optical mode, if now optical filtering part 400 is in the state for blocking mounting hole 402, actuator 500 drives optical filtering part
400 motions are so as to open mounting hole 402, so that by the infrared light of optical filter 10 via being projected directly at figure after mounting hole 402
As on sensor 200；If now optical filtering part 400 does not block mounting hole 402, actuator 500, which drives, not to be acted, passes through optical filtering
The infrared light of piece 10 after mounting hole 402 via being projected directly on imaging sensor 200.
In this way, imaging modules 1000 increase optical filtering part 400 to filter out other wavelength in addition to visible ray and infrared light
Light so that imaging sensor 200 gets more accurate data, to obtain quality more preferably image.
Referring to Fig. 5, in some embodiments, optical filtering part 400 includes visible ray optical filtering portion 414 and infrared filtering portion
412.Actuator 500 can be used for driving optical filtering part 400 to move so that visible ray optical filtering portion 414 can be rotatably mounted at mounting hole
On 402, and for driving infrared light optical filtering portion 412 to rotate so that infrared light optical filtering portion 412 can be rotatably mounted at mounting hole
On 402, in this way, further to be filtered to the visible or infrared light by optical filter 10.Wherein, it is seen that light optical filtering portion
414 and infrared light optical filtering portion 412 be set on the rotor 504 of actuator 500, it is seen that light optical filtering portion 414 is set in rotor 504
On one end for being set in infrared light optical filtering portion 412 on rotor 504 of one end hold altogether.
Angle between visible ray optical filtering portion 414 and infrared light optical filtering portion 412 need to be more than or equal to 90 degree.In this way, can
When seeing that light optical filtering portion 414 shelters from mounting hole 402, the completely open mounting hole 402 in infrared light optical filtering portion 412, pass through optical filter 10
Visible ray will not be because being filtered the blocking of infrared light optical filtering portion 412 when passing through visible ray optical filtering portion 414；Filtered in infrared light
When light portion 412 shelters from mounting hole 402, it is seen that the completely open mounting hole 402 in light optical filtering portion 414, pass through the infrared of optical filter 10
Light will not be because being filtered when passing through infrared light optical filtering portion 412 the blocking of visible ray optical filtering portion 414.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (14)
1. a kind of optical filter, it is characterised in that the optical filter includes the first eyeglass and the second eyeglass that interval is oppositely arranged, institute
State and high reflection film layer be provided with the first eyeglass and relative two surfaces of second eyeglass, first eyeglass with it is described
Second eyeglass can relative motion to change the gap length between first eyeglass and second eyeglass, it is described to cause
Optical filter can switch between visible mode and infrared optical mode, and in the visible mode, the optical filter only allows
Visible ray is by the way that in the infrared optical mode, the optical filter only allows infrared light to pass through.
2. optical filter according to claim 1, it is characterised in that under the visible mode, the optical filter only allows
Feux rouges in the visible ray by when, the span in the gap is [310,380] nanometer；
Under the visible mode, green glow that the optical filter only allows in the visible ray by when, the value in the gap
Scope is [245,290] nanometer；
Under the visible mode, blue light that the optical filter only allows in the visible ray by when, the value in the gap
Scope is [225,237.5] nanometer.
3. optical filter according to claim 1, it is characterised in that under the infrared optical mode, the optical filter only allows
The infrared light by when, the span in the gap is [405,425] nanometer；Or
The value in the gap is 470 nanometers.
4. optical filter according to claim 1, it is characterised in that the optical filter also includes actuator, the actuator
For driving first eyeglass to be relatively moved with second eyeglass.
5. according to the optical filter described in claim 1-4 any one, it is characterised in that the optical filter also includes the 3rd mirror
Piece, first eyeglass is between the 3rd eyeglass and second eyeglass；
The relatively described 3rd eyeglass fixed setting of second eyeglass, the actuator are fixedly installed on the 3rd eyeglass simultaneously
It is connected with first eyeglass, the actuator is used to drive the first eyeglass movement to change the gap length；Or
The relatively described 3rd eyeglass fixed setting of first eyeglass, the actuator are fixedly installed on the 3rd eyeglass simultaneously
It is connected with second eyeglass, the actuator is used to drive the second eyeglass movement to change the gap length.
A kind of 6. camera lens module, it is characterised in that the camera lens module include microscope base, the lens barrel on the microscope base, with
And the optical filter described in claim 1 to 5 any one, the optical filter are arranged in the lens barrel or the microscope base.
7. camera lens module according to claim 6, it is characterised in that the camera lens module also includes being arranged on the lens barrel
It is interior to focus lens, it is described that focus lens and the optical filter are located in same light path.
8. a kind of imaging modules, it is characterised in that the imaging modules include：
Substrate；
Imaging sensor on the substrate is set；With
Camera lens module described in claim 6 or 7, the camera lens module are fixed on the substrate, and described image sensor is received
Hold in the camera lens module.
9. imaging modules according to claim 8, it is characterised in that the imaging modules also include optical filtering part, the filter
Light part is arranged on the upstream of the light path of described image sensor, when the optical filter is in the visible mode, the filter
Light part is used to pass through the visible ray, and when the optical filter is in the infrared optical mode, the optical filtering part is used to pass through institute
State visible ray.
10. imaging modules according to claim 9, it is characterised in that offer installation on the lens barrel or the microscope base
Hole, the optical filtering part are movably mounted in the mounting hole, and the imaging modules also include actuator, and the actuator is used for
The optical filtering part motion is driven to open or block the mounting hole.
11. imaging modules according to claim 10, it is characterised in that the optical filtering part is used for only by described infrared
Light, when the optical filter is in the visible mode, the actuator drives the optical filtering part to open the mounting hole；
When the optical filter is in infrared optical mode, the actuator drives the optical filtering part to block the mounting hole.
12. according to claim imaging modules according to claim 10, it is characterised in that the optical filtering part is used to only lead to
The visible ray is crossed, when the optical filter is in the visible mode, the actuator drives the optical filtering part to block institute
State mounting hole；When the optical filter is in infrared optical mode, the actuator drives the optical filtering part to open the mounting hole.
13. imaging modules according to claim 10, it is characterised in that the actuator includes stator and rotor, described
Stator is arranged on the inwall of the lens barrel or the microscope base, and one end of the optical filtering part is set on the rotor, described turn
Subband moves the optical filtering part and rotated to open or block the mounting hole.
14. imaging modules according to claim 13, it is characterised in that the optical filtering part includes visible ray optical filtering portion and red
Outer light optical filtering portion, the visible ray optical filtering portion and infrared light optical filtering portion set are set on the rotor, the visible ray
Hold altogether one end that one end that optical filtering portion is set on the rotor is set on the rotor with the infrared light optical filtering portion.
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| CN201710915386.2A CN107561684B (en) | 2017-09-30 | 2017-09-30 | Optical filter, lens module and imaging module |
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