CN107561685A - Optical filter, camera lens module and imaging modules - Google Patents
Optical filter, camera lens module and imaging modules Download PDFInfo
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- CN107561685A CN107561685A CN201710915564.1A CN201710915564A CN107561685A CN 107561685 A CN107561685 A CN 107561685A CN 201710915564 A CN201710915564 A CN 201710915564A CN 107561685 A CN107561685 A CN 107561685A
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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.First eyeglass includes first minute surface relative with the second eyeglass, and the second eyeglass includes second minute surface relative with the first eyeglass.High reflection film layer is provided with first minute surface and the second minute surface.At least one in first minute surface and the second minute surface is cascaded surface, so as to the first gap of different sizes and the second gap between the first eyeglass and the second eyeglass at least be present.First eyeglass and the second eyeglass can relative motion so that the first gap and the increase of the second Dwell sync or synchronous reduction.The invention also discloses a kind of camera lens module and imaging modules.The first gap of different sizes and the second gap at least be present between the first eyeglass and the second eyeglass of optical filter disclosed by the invention, when the first eyeglass and the second eyeglass relative motion are to a definite value, optical filter can at least export the emergent light of two kinds of different wave lengths, and the purposes of emergent light is wide.
Description
Technical field
The present invention relates to technical field of imaging, more specifically, is related to a kind of optical filter, camera lens module and imaging modules.
Background technology
Usual variable filter includes two relative minute surfaces, can be with by the size in the gap between two minute surfaces of adjustment
The emergent light of different wave length is obtained, and when the gap length of two minute surfaces is adjusted to a definite value, the outgoing of variable filter
The wavelength of light is more single, and the purposes of emergent light is also more single.
The content of the invention
Embodiment of the present invention 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
Piece includes first minute surface relative with second eyeglass, and second eyeglass includes second mirror relative with first eyeglass
Face, first minute surface on second minute surface with being provided with high reflection film layer, first minute surface and second minute surface
In it is at least one for cascaded surface so as to of different sizes first at least be present between first eyeglass and second eyeglass
Gap and the second gap, first eyeglass and second eyeglass can relative motion so that first gap and described the
Two Dwell syncs increase or synchronous reduction.
The camera lens module of embodiment of the present invention includes microscope base, the lens barrel on the microscope base and above-mentioned optical filtering
Piece, the optical filter are arranged in the lens barrel or the microscope base.
The imaging modules of embodiment of the present invention include substrate, set imaging sensor on the substrate and above-mentioned
Camera lens module, the camera lens module fixed on the substrate, and described image sensor is housed in the camera lens module.
Between the first eyeglass and the second eyeglass of the optical filter of embodiment of the present invention, camera lens module and imaging modules at least
The first gap of different sizes and the second gap be present, when the first eyeglass and the second eyeglass relative motion are to a definite value, filter
Mating plate can at least export the emergent light of two kinds of different wave lengths, and the purposes of emergent light is wide.
The additional aspect and advantage of embodiments of the present invention will be set forth in part in the description, partly will be from following
Description in become obvious, or recognized by the practice of embodiments of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention is from combining in description of the accompanying drawings below to embodiment by change
Obtain substantially and be readily appreciated that, wherein：
Fig. 1 is the structural representation of the optical filter of embodiment of the present invention；
Fig. 2 is the structural representation of the optical filter of embodiment of the present invention；
Fig. 3 is the structural representation of the optical filter of embodiment of the present invention；
Fig. 4 is the structural representation of the optical filter of embodiment of the present invention；
Fig. 5 is the structural representation of the optical filter of embodiment of the present invention；
Fig. 6 is the structural representation of the optical filter of embodiment of the present invention；
Fig. 7 is the structural representation of the camera lens module of embodiment of the present invention；
Fig. 8 is the structural representation of the imaging modules of embodiment of the present invention；
Fig. 9 is the optical filtering part of embodiment of the present invention and the structural representation of actuator.
Embodiment
Embodiments of the present invention are described further below in conjunction with accompanying drawing.Same or similar label is from beginning in accompanying drawing
To the whole element for representing same or similar element or there is same or like function.
In addition, the embodiments of the present invention described below in conjunction with the accompanying drawings are exemplary, it is only used for explaining the present invention's
Embodiment, and be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height and is less than second feature.
Referring to Fig. 1, the optical filter 10 of embodiment of the present invention includes the first eyeglass 11 and the second eyeglass 12, the first eyeglass
11 are oppositely arranged with the second eyeglass 12 interval.First eyeglass 11 includes first minute surface 111 relative with the second eyeglass 12.Second mirror
Piece 12 includes second minute surface 121 relative with the first eyeglass 11.It is provided with first minute surface 111 and the second minute surface 121 high anti-
Penetrate film layer 13.At least one in first minute surface 111 and the second minute surface 121 is cascaded surface, so that the first eyeglass 11 and the second mirror
The first gap d 1 and the second gap d 2 of different sizes between piece 12 at least be present.First eyeglass 11 being capable of phase with the second eyeglass 12
To moving so that the first gap d 1 and the synchronous increase of the second gap d 2 or synchronous reduction.
At least exist between the first eyeglass 11 and the second eyeglass 12 of the optical filter 10 of embodiment of the present invention of different sizes
The first gap and the second gap, when the first eyeglass 11 and the relative motion of the second eyeglass 12 are to a definite value, optical filter 10 can
The emergent light of two kinds of different wave lengths is at least exported, the purposes of emergent light is wide.
Referring to Fig. 1, specifically, the first eyeglass 11 and the second eyeglass 12 can be plate glass or quartz plate.First mirror
The minute surface 121 of face 111 and second is relative, and highly reflecting films, high reflection film layer 13 are provided with the first minute surface 111 and the second minute surface 121
Can be metal film or multilayer dielectric film, wherein, metal film can be silverskin, aluminium film etc..
At least one in first minute surface 111 and the second minute surface 121 is cascaded surface, can be the first minute surface 111 and second
Minute surface 121 is cascaded surface (as shown in Figure 2)；Can also be that one among the first minute surface 111 and the second minute surface 121 is ladder
Face, another is plane, such as the first minute surface 111 is cascaded surface and the second minute surface 121 is plane (as shown in figs. 1 and 3).Ladder
Face is parallel including at least two, and minute surface not in the same plane two-by-two, that is to say, that cascaded surface, which can include two, puts down
Row and minute surface (as shown in Figure 1) not in the same plane；Cascaded surface can also be include three it is parallel, and two-by-two not same
Minute surface (as shown in Figure 3) in one plane.Certainly, in cascaded surface, parallel and two minute surfaces neither in the same plane quantity
It can be four, five or more, this is not restricted.
Two gaps of different sizes between first minute surface 111 and the second minute surface 121 at least be present.Such as Fig. 1 and Fig. 2 institutes
Show two gaps of different sizes, respectively the first gap d 1 and second between the first minute surface 111 and the second minute surface 121 be present
Gap d 2；As shown in figure 3, three gaps of different sizes between the first minute surface 111 and the second minute surface 121 be present, respectively
Three gap ds 3, the 4th gap d 4 and the 5th gap d 5, certainly, the quantity in gap of different sizes can also be four, five or
Other quantity, this is not restricted.When the first eyeglass 11 and the second 12 relative motion of eyeglass, multiple Dwell sync increases or same
Step reduces.
The first eyeglass 11 in the optical filter 10 of embodiment of the present invention is oppositely arranged with the second eyeglass 12 interval, the first mirror
The eyeglass 12 of piece 11 and second forms Fabry-Perot interferometer, wherein, the space between the first minute surface 111 and the second minute surface 121
Form Fabry-Perot-type cavity.After entering Fabry-Perot-type cavity after incident light injection optical filter 10 including multi-wavelength, wavelength
Meet that very high peak value occurs in the light of resonance condition in transmission spectrum, correspond to high-transmission rate, therefore, this kind of light can be in method
Fabry-Perot-type intracavitary carries out multiple reflections and forms interfering beam, eventually passes through that optical filter 10 is wholly transmissive to go out, and is unsatisfactory for altogether
The light for condition of shaking can not pass through optical filter 10.Transmissivity and first minute surface 111 and second minute surface of the light in Fabry-Perot-type cavity
Gap between 121 is relevant, it is generally the case that resonance condition refer to the width (d) in gap for the wavelength (λ) of light two/
One, i.e. d=λ/2, this time have higher transmissivity.
Specifically, due at least two gaps of different sizes between the first minute surface 111 and the second minute surface 121 be present, often
Individual different gap is correspondingly formed a Fabry-Perot-type cavity, through different Fabry-Perot-type cavities after transmitted from optical filter 10
The wavelength of the light gone out is also different.For example, referring to Fig. 1, corresponding respectively with the first gap d 1 and the second gap d 2 is the first method
Fabry-Perot-type cavity C1 and the second Fabry-Perot-type cavity C2, the wavelength of the light transmitted from C1 and C2 is respectively λ 1 and λ 2, wherein λ
1=2 × d1, λ 2=2 × d2.The light transmitted from C1 and C2 can be visible ray, such as the feux rouges respectively in visible ray
And blue light；It can also be black light, such as be infrared light；It can also be respectively visible ray and black light, such as divide
Feux rouges and infrared light that Wei be in visible ray.
First eyeglass 11 and the relative motion of the second eyeglass 12 can synchronous change the first gap d 1 and the second gap d 2 size,
The wavelength X 1 and λ 2 of transmitted light are also changed simultaneously.Such as it is that white light is (including visible ray, infrared to inject the light of optical filter 10
The light of the types such as light, ultraviolet light), when the first gap d 1 is initial value, the light transmitted from the first Fabry-Perot-type cavity C1 can
For blue light, the value of the first gap d 1 of adjustment is after desired value, the light transmitted from the first Fabry-Perot-type cavity C1 can change into
Infrared light.Similarly, the light for injecting optical filter 10 is white light, when the first eyeglass 11 and the second 12 relative motion of eyeglass, from second
The light that Fabry-Perot-type cavity C2 is transmitted can also change, and not repeat herein.
Referring to Fig. 1, the embodiment of the present invention will be cascaded surface with the first minute surface 111, the second minute surface 121 is plane, first
Exist between the minute surface 121 of minute surface 111 and second and be described in detail exemplified by first gap d 1 and the second gap d 2.By optical filter
10 when being used for imaging modules, can adjust the size of the first gap d 1 and the size of the second gap d 2 so that is transmitted from C1 and C2
The light gone out is visible ray, and imaging modules can realize visual light imaging to obtain coloured image；The first gap d 1 can also be adjusted
Size and the second gap d 2 size so that the light transmitted from C1 and C2 is infrared light, and imaging modules can be realized infrared
It is imaged to obtain infrared image.Further, if imaging modules are applied to be configured with the mobile device of iris identifying function,
Now mobile device only needs to set an imaging modules that coloured image shooting and the shooting of iris image can be achieved, so as to
The multiplexing of visual light imaging and infrared imaging is realized, reduces the hardware cost of mobile device, while increases the screen of mobile device
The free space of curtain.
Referring to Fig. 1, in some embodiments, optical filter 10 includes being formed on the first eyeglass 11 or the second eyeglass 12
Exiting surface 122, exiting surface 122 is formed with the first light-emitting window 1221 and the second light-emitting window 1222, the first light-emitting window 1221 and
The correspondence of one gap d 1, the second light-emitting window 1222 are corresponding with the second gap d 2.
First light-emitting window 1221 and the second light-emitting window 1222 can be as the exit portal of the light of two kinds of different wave lengths, Ke Yitong
Cross and the light appeared from the first light-emitting window 1221 and the second light-emitting window 1222 is directed in different imaging sensors respectively, to obtain
Obtain different image effects.In the embodiment shown in fig. 1, light injects optical filter 10 and from the second mirror from the first eyeglass 11
Piece 12 projects optical filter 10, and the first minute surface 111 is cascaded surface, and the second minute surface 121 is plane, and exiting surface 122 is formed in the second mirror
On piece 12, exiting surface 122 is opposite with the second minute surface 121.In the embodiment as shown in fig.4, light is injected from the second eyeglass 12
Optical filter 10 and optical filter 10 is projected from the first eyeglass 11, the first minute surface 111 is cascaded surface, and the second minute surface 121 is plane, light extraction
Face 122 is formed on the first eyeglass 11, and exiting surface 122 is opposite with the first minute surface 111.It should be noted that the first light-emitting window
1221 and second light-emitting window 1222 can be formed in groove on exiting surface 122, in order to which user positions the first light-emitting window
1221 and second light-emitting window 1222 position and be easy to and external equipment assemble.First light-emitting window 1221 and the second light-emitting window 1222
It can also be the specific region on exiting surface 122.
Referring to Fig. 1, in some embodiments, the first minute surface 111 is cascaded surface, and the second minute surface 121 is plane, first
Minute surface 111 includes the first sub- 1121 and second sub- minute surface 1131 of minute surface, the first sub- 1121 and second sub- minute surface 1131 of minute surface with
Second minute surface 121 is parallel.
Specifically, the gap of the first sub- minute surface 121 of minute surface 1121 and second is the first gap d 1, the first sub- minute surface 1121 with
Second minute surface 121 is collectively forming the first Fabry-Perot-type cavity C1, and the gap of the second sub- minute surface 121 of minute surface 1131 and second is the
Two gap ds 2, the second sub- minute surface 121 of minute surface 1131 and second are collectively forming the second Fabry-Perot-type cavity C2.First sub- minute surface
1121 can be with equal or unequal with the area of the second sub- minute surface 1131, can be same by mobile first eyeglass 11 or the second eyeglass 12
Step changes the size of the first gap d 1 and the size of the second gap d 2.
Referring to Fig. 1, in some embodiments, the first eyeglass 11 includes the first sub- 112 and second sub- eyeglass of eyeglass
113, the first sub- minute surface 1121 is formed on the first sub- eyeglass 112, and the second sub- minute surface 1131 is formed on the second sub- eyeglass 113,
First sub- eyeglass 112 is equal with the thickness of the second sub- eyeglass 113.
First sub- eyeglass 112 is equal with the thickness of the second sub- eyeglass 113, and light is sub through the first sub- eyeglass 112 and second
The equivalent optical path of eyeglass 113 so that light passed through the first sub- eyeglass 112 identical with the attenuation degree of the second sub- eyeglass 113.When
When the intensity of incident light is identical everywhere, into the first Fabry-Perot-type cavity C1 and the second Fabry-Perot-type cavity C2 light intensity
It is identical.And first sub- eyeglass 112 it is equal with the thickness of the second sub- eyeglass 113 so that processing the first sub- 112 and second sub- mirror of eyeglass
The partial parameters of piece 113 can be easy to processing to obtain the first sub- 112 and second sub- eyeglass 113 of eyeglass with identical.
Referring to Fig. 1, in some embodiments, the first eyeglass 11 also includes connection eyeglass 114, connection eyeglass 114 inclines
Tiltedly the first sub- 112 and second sub- eyeglass 113 of eyeglass of connection.
Connect eyeglass 114 and the first sub- 112 and second sub- eyeglass 113 of eyeglass thickness can with equal, connect eyeglass 114 and
The material of first sub- 112 and second sub- eyeglass 113 of eyeglass can be same or different, and connection eyeglass 114 can be printing opacity
Eyeglass or lighttight eyeglass.
In one embodiment, connect eyeglass 114 and tilt the first sub- 112 and second sub- eyeglass 113 of eyeglass of connection, refer to
It is the connection sub- out of plumb of eyeglass 112 of eyeglass 114 and first, and connects the sub- out of plumb of eyeglass 113 of eyeglass 114 and second.
Certainly, in other embodiments, connection eyeglass 114 can also select and the first sub- sub- mirror of eyeglass 112 or the second
The vertical connection of piece 113.Under the combination of different connected modes, the first eyeglass 11 has different overall structure stabilitys.
Referring to Fig. 5, in some embodiments, the first eyeglass 11 includes the back side 115 opposite with the first minute surface 111,
The back side 115 is plane.
First minute surface 111 is cascaded surface, and the back side 115 is plane, and the structure at the back side 115 is simple, is easily worked, and the first mirror
The intensity of piece 11 is higher, is not susceptible to be broken.
Referring to Fig. 1, in some embodiments, edge is on the direction of the second minute surface 121, the first sub- minute surface 1121
The distance between second sub- minute surface 1131 for (0,50] nanometer.
The wave-length coverage of visible ray is received in [380,780] nanometer, the wave-length coverage of conventional infrared light for [800,900]
Rice.Due to when being imaged using optical filter 10, it is often desirable that the light that optical filter 10 passes through is a type of light, such as
Wish that light that optical filter 10 passes through is visible ray to obtain coloured image, it is desirable alternatively to which the light that optical filter 10 passes through is infrared
Light is to obtain infrared image.Such as when it is above-mentioned conventional infrared light to wish light that optical filter 10 passes through, according to d=λ/2
Resonance condition, the first gap d 1 and the second gap d 2 should be in the range of [400,450] nanometer, and if the first minute surface
111 and second the distance between minute surface 121 Δ d (Δ d=d1-d2) be more than 50 nanometers, then light passes through the first Fabry-Perot
Wavelength after sieve chamber C1 and the second Fabry-Perot-type cavity C2 can not possibly be in the range of [800,900] nanometer.Therefore combine real
Border use demand, the distance between the first minute surface 111 and the second minute surface 121 can be arranged on (0,50] in the range of nanometer, example
It such as can be 10 nanometers, 23 nanometers, 44 nanometers, 50 nanometers.
Referring to Fig. 1, in some embodiments, optical filter 10 also includes actuator 14, and actuator 14 is used to driving the
One eyeglass 11 is so that the first eyeglass 11 and the relative motion of the second eyeglass 12.
Referring to Fig. 6, in some embodiments, actuator 14 be used to drive the second eyeglass 12 so that the first eyeglass 11 with
The relative motion of second eyeglass 12.
Specifically, actuator 14 can be magnetic deformation actuator.Magnetic deformation actuator utilizes the mangneto of magnetic material
Expansion performance, after to material extra electric field, magnetic material can stretch or shrink.Therefore, by the eyeglass 11 of actuator 14 and first
Or second eyeglass 12 when connecting, actuator 14 can drive the first eyeglass 11 or the second eyeglass 12 move to change the by flexible
The size of one gap d 1 and the second gap d 2, so as to realize that the tuning of light is filtered.
In one example, optical filter 10 can be operated under visible mode for visual light imaging, actuator 14
The first eyeglass 11 or the second eyeglass 12 can be driven to obtain the light of multiple color several times.Such as actuator 14 changes in three times
First gap d 1 and the second gap d 2, the light of six kinds of different wave lengths of optical filter 10 can be obtained across, specifically, between first
When the gap d1 and distance, delta d of the second gap d 2 is 20 nanometers, actuator 14 can change the first gap d 1 and the second gap in three times
D2 is used in combination using obtaining light of the wavelength as 700 nanometers and 740 nanometers, 510 nanometers and 550 nanometers, 440 nanometers and 480 nanometers respectively
In follow-up imaging so that the color of the image finally given is more true and abundant.
In another example, optical filter 10 can be operated under infrared optical mode for infrared imaging, actuator 14
With one or many first eyeglass 11 or the second eyeglass 12 can be driven to obtain the infrared light of a variety of different wave lengths.Such as when first
When the distance, delta d of the gap d 2 of gap d 1 and second is 25 nanometers, actuator 14 activates once so that the first gap d 1 is received for 445
Rice, the second gap d 2 are 470 nanometers, and the wavelength that can be obtained through optical filter 10 is 890 nanometers and wavelength is 940 nanometers red
Outer light.
It is appreciated that driver 50 can also be used to drive the first eyeglass 11 and the second eyeglass 12 simultaneously, so that the first eyeglass
11 and the relative motion of the second eyeglass 12.
Referring to Fig. 7, the camera lens module 100 of embodiment of the present invention includes microscope base 20, the lens barrel on microscope base 20
30 and above-mentioned any one embodiment in optical filter 10.Optical filter 10 is arranged in lens barrel 30 or microscope base 20.
Referring again to Fig. 7, in some embodiments, camera lens module 100 is also included 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 can be arranged on lens barrel
30 or microscope base 20 in.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
In 30.When in the lens barrel 30 of optical filter 10, 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 successively by optical filter 10 and to focus lens 40, or successively by pair
Focus lens 40 and optical filter 10.
Quantity to focus lens 40 can be multiple, and camera lens module 100 can be zoom lens.Specifically, camera lens module
100 also include driver 50, and multiple that focus lens 40 are connected with driver 50, driver 50 drives to be moved to change to focus lens 40
Become the focusing focal length of camera lens module 100.Certainly, camera lens module 100 can also be tight shot, i.e. be fixation to focus lens 40
It is irremovable in lens barrel 30.
Referring to Fig. 8, the imaging modules 1000 of embodiment of the present invention include substrate 300, the figure of setting on the substrate 300
As sensor 200 and the camera lens module 100 of any of the above-described embodiment.Camera lens module 100 is fixed on the substrate 300.Image passes
Sensor 200 is housed in camera lens module 100.
Imaging sensor 200 receives by the light of optical filter 10 and generates corresponding electric signal output, by with imaging modules
The processor of 1000 connections carries out signal transacting to obtain shooting image.When optical filter 10 is operated under visible mode, figure
As sensor 200 receives the visible ray (such as feux rouges, green glow and blue light) through a variety of different wave lengths of optical filter 10 and divides more
The secondary corresponding electric signal of output, processor carry out signal transacting and can obtain coloured image.When optical filter 10 is operated in infrared light
When under pattern, imaging sensor 200 receives the infrared light through a variety of different wave lengths of optical filter 10 and exports corresponding telecommunications
Number, processor carries out signal transacting and can obtain infrared image.
Referring to Fig. 8, in some embodiments, imaging modules 1000 also include optical filtering part 400, optical filtering part 400 is set
In light path between imaging sensor 200 and optical filter 10, optical filtering part 400 is used for optionally by visible ray or infrared
Light.
It is appreciated that the Fabry-Perot interference chamber formed in optical filter 10 between first eyeglass 11 and the second eyeglass 12
(C1 and C2) under ideal conditions can be only by the light of predefined type, and by taking infrared light as an example, now optical filter 10 is for infrared
The ratio that the transmissivity of light accounts for actual incident light may be up to 99%, and the accounting of the transmissivity of the light of other wavelength is almost nil,
Now infrared light wavelength boundary position, the perpendicular downward trend of accounting of the transmissivity of optical filter 10.But in reality
In operation, in the boundary position of the wavelength of infrared light, the accounting of the transmissivity of optical filter 10 is that have certain decline process.
I other words now optical filter 10 can not only pass through infrared light, moreover it is possible to marginally pass through other wavelength in addition to infrared light
Light.Similarly, in practical operation, optical filter 10 is when largely passing through visible ray, moreover it is possible to marginally by addition to visible ray
The light of other wavelength.Therefore, to make the light that imaging sensor 200 receives more accurate, to obtain more preferable image quality,
Can an optical filtering part 400 be set in imaging modules 1000 selectively to filter out except visible or infrared light.
Referring again to Fig. 8, in some embodiments, mounting hole 22 is offered on lens barrel 30 or microscope base 20, light passes through
Mounting hole 22 is passed through after optical filter 10, with further to imaging sensor 200.Optical filtering part 400 is movably mounted to mounting hole
In 22.Imaging modules 1000 also include actuator 500.Actuator 500 is used to drive optical filtering part 400 to move to open or block peace
Fill hole 22.
Actuator 500 includes stator 502 and rotor 504.Stator 502 is arranged on the inwall of lens barrel 30 or microscope base 20.Filter
One end of light part 400 is set on rotor 504.Rotor 504, which rotates, drives optical filtering part 400 to rotate to open or block mounting hole
22。
Specifically, when mounting hole 22 is opened on lens barrel 30, actuator 500 is correspondingly disposed on lens barrel 30, stator 502
Also it is correspondingly disposed on lens barrel 30；When mounting hole 22 is opened on microscope base 20, actuator 500 is correspondingly disposed in microscope base 20
On, stator 502 is also correspondingly disposed on microscope base 20.
In one example, it is necessary to when imaging sensor 200 is used for into visual light imaging, if optical filtering part 400 is infrared section
Only optical filter (being only used for by the light outside infrared light), when optical filter 10 is in visible mode (only passing through visible ray), drive
Moving part 500 can be used for driving optical filtering part 400 to block or open mounting hole 22；If optical filtering part 400 (is only used to be infrared by optical filter
In passing through infrared light), when optical filter 10 is in visible mode, actuator 500 can be used for driving optical filtering part 400 to open mounting hole
22。
In another example, it is necessary to when imaging sensor 200 is used for into infrared imaging, if optical filtering part 400 is infrared
Edge filter, when optical filter 10 is in infrared optical mode (only passing through infrared light), actuator 500 can be used for driving optical filtering part
400 open mounting hole 22；If optical filtering part 400 passes through optical filter, when optical filter 10 is in infrared optical mode, actuator to be infrared
500 can be used for driving optical filtering part 400 to block or open mounting hole 22.
Incorporated by reference to Fig. 8 and Fig. 9, in some embodiments, optical filtering part 400 includes visible ray optical filtering portion 402 and infrared light
Optical filtering portion 404.Imaging modules 1000 also include actuator 500, and actuator 500 is used to switching visible ray optical filtering portion 402 and infrared
In a light path between imaging sensor 200 and optical filter 10 among light optical filtering portion 404.
Specifically, in some embodiments, actuator 500 includes stator 502 and rotor 504, and stator 502 is arranged on mirror
On the inwall of cylinder 30 or microscope base 20, it is seen that light optical filtering portion 402 and infrared light optical filtering portion 404 are fixedly connected with rotor 504.Rotor
504 can rotate, to drive one among visible ray optical filtering portion 402 and infrared light optical filtering portion 404 to turn to imaging sensor
In light path between 200 and optical filter 10.
Visible ray optical filtering portion 402 is used to pass through visible ray, and filters out the light of its all band.Infrared light optical filtering portion 404
For by infrared light, and filter out the light of its all band.
When optical filter 10 is in visible mode, actuator 500 drives visible ray optical filtering portion 402 to turn to image sensing
In light path between device 200 and optical filter 10, specifically, mounting hole 22 is blocked in now visible ray optical filtering portion 402.When optical filter 10
During in infrared optical mode, actuator 500 drive infrared light optical filtering portion 404 turn to imaging sensor 200 and optical filter 10 it
Between light path on, specifically, mounting hole 22 is blocked in now infrared light optical filtering portion 404.Referring to Fig. 9, in embodiments of the present invention,
Angle α between visible ray optical filtering portion 402 and infrared light optical filtering portion 404 is more than or equal to 90 degree.So that proper visible ray filters
When mounting hole 22 is blocked in portion 402 completely, the completely open mounting hole 22 in infrared light optical filtering portion 404, similarly, when infrared light optical filtering portion
404 when blocking mounting hole 22 completely, it is seen that the completely open mounting hole 22 in light optical filtering portion 402.
In the description of this specification, reference term " some embodiments ", " embodiment ", " some embodiment party
The description of formula ", " exemplary embodiment ", " example ", " specific example " or " some examples " means with reference to the embodiment
Or specific features, structure, material or the feature of example description are contained at least one embodiment or example of the present invention.
In this manual, identical embodiment or example are not necessarily referring to the schematic representation of above-mentioned term.Moreover, description
Specific features, structure, material or feature can be in any one or more embodiments or example with suitable side
Formula combines.
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 feature.In the description of the invention, " multiple " are meant that at least two, such as two,
Three, 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, the scope of the present invention are limited by claim and its equivalent.
Claims (14)
1. a kind of optical filter, it is characterised in that including being spaced the first eyeglass and the second eyeglass that are oppositely arranged, first eyeglass
Including first minute surface relative with second eyeglass, second eyeglass includes second mirror relative with first eyeglass
Face, first minute surface on second minute surface with being provided with high reflection film layer, first minute surface and second minute surface
In it is at least one be cascaded surface, the first gap of different sizes between first eyeglass and second eyeglass at least be present
With the second gap, first eyeglass and second eyeglass can relative motion so that between first gap and described second
Gap synchronously increase or synchronous reduction.
2. optical filter according to claim 1, it is characterised in that the optical filter include being formed in first eyeglass or
Exiting surface on second eyeglass, the exiting surface is formed with the first light-emitting window and the second light-emitting window, first light-emitting window
Corresponding with first gap, second light-emitting window is corresponding with second gap.
3. optical filter according to claim 1, it is characterised in that first minute surface is cascaded surface, second minute surface
For plane, first minute surface includes the first sub- minute surface and the second sub- minute surface, the first sub- minute surface and the second sub- minute surface
It is parallel with second minute surface.
4. optical filter according to claim 3, it is characterised in that first eyeglass includes the first sub- eyeglass and the second son
Eyeglass, the first sub- minute surface are formed on the described first sub- eyeglass, and the second sub- minute surface is formed in the described second sub- eyeglass
On, the first sub- eyeglass is equal with the thickness of the described second sub- eyeglass.
5. optical filter according to claim 4, it is characterised in that first eyeglass also includes connection eyeglass, the company
Connect lens tilt and connect the first sub- eyeglass and the second sub- eyeglass.
6. optical filter according to claim 3, it is characterised in that first eyeglass includes opposite with first minute surface
The back side, the back side is plane.
7. optical filter according to claim 3, it is characterised in that edge is described on the direction of second minute surface
The distance between first sub- minute surface and the described second sub- minute surface for (0,50] nanometer.
8. optical filter according to claim 1, it is characterised in that the optical filter also includes actuator, the actuator
For driving first eyeglass and/or second eyeglass so that first eyeglass and the second eyeglass relative motion.
A kind of 9. camera lens module, it is characterised in that including：
Microscope base；
Lens barrel on the microscope base；With
Optical filter described in claim 1-8 any one, the optical filter are arranged in the lens barrel or the microscope base.
10. camera lens module according to claim 9, it is characterised in that the camera lens module also includes being arranged on the mirror
In cylinder to focus lens, it is described that focus lens and the optical filter are located in same light path.
A kind of 11. imaging modules, it is characterised in that including：
Substrate；
Imaging sensor on the substrate is set；With
Camera lens module described in claim 9 or 10, the camera lens module are fixed on the substrate, and described image sensor is received
Hold in the camera lens module.
12. imaging modules according to claim 11, it is characterised in that the imaging modules also include optical filtering part, described
Optical filtering part is arranged in the light path between described image sensor and the optical filter, the optical filtering part be used for optionally by
Visible or infrared light.
13. imaging modules according to claim 12, it is characterised in that the optical filtering part includes visible ray optical filtering portion and red
Outer light optical filtering portion, the imaging modules also include actuator, and the actuator is used to switching the visible ray optical filtering portion and described
In a light path between described image sensor and the optical filter among infrared light optical filtering portion.
14. imaging modules according to claim 13, 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 the visible ray optical filtering portion and the infrared light optical filtering portion are and institute
State rotor to be fixedly connected, the rotor can rotate, to drive among the visible ray optical filtering portion and the infrared light optical filtering portion
One turn in the light path between described image sensor and the optical filter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710915564.1A CN107561685B (en) | 2017-09-30 | 2017-09-30 | Optical filter, lens module and imaging module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710915564.1A CN107561685B (en) | 2017-09-30 | 2017-09-30 | Optical filter, lens module and imaging module |
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| CN107561685A true CN107561685A (en) | 2018-01-09 |
| CN107561685B CN107561685B (en) | 2020-10-02 |
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| CN201710915564.1A Active CN107561685B (en) | 2017-09-30 | 2017-09-30 | Optical filter, lens module and imaging module |
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| CN107561685B (en) | 2020-10-02 |
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