CN104914593A - Changeable grating structure control method based on electro-thermal effect - Google Patents
Changeable grating structure control method based on electro-thermal effect Download PDFInfo
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- CN104914593A CN104914593A CN201510367685.8A CN201510367685A CN104914593A CN 104914593 A CN104914593 A CN 104914593A CN 201510367685 A CN201510367685 A CN 201510367685A CN 104914593 A CN104914593 A CN 104914593A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/0147—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on thermo-optic effects
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/0009—Materials therefor
- G02F1/009—Thermal properties
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B2005/1804—Transmission gratings
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- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
Abstract
The invention discloses a changeable grating structure control method based on an electro-thermal effect. The control method comprises steps building a changeable grating structure based on the electro-thermal effect, connecting one ends of all resistance sheets in a parallel way and then connecting the one ends to a signal generator and a power supply in a serial way, connecting resistance sheets at equal intervals to the external signal generator and the power supply via transparent medium, supplying power to the resistance sheets by the power supply, adjusting the signal generator to produce various current signal waveforms, and achieving electric control effect according to change trends of various diffraction angles (theta). After the heating resistance is powered, the diffraction angle of the incoming parallel light changes from 0 to 90 degrees; and diffraction angle is increased compared with other technical schemes, so grating constant change range affected by the diffraction angle is enlarged.
Description
Technical field
The invention relates to a kind of transmission grating, is a kind of transmission grating by controlled current flow structure, relates to photo measure and optical information processing field.
Background technology
Grating is generally the optical element that a large amount of wide equally spaced slit is formed.But, modern age grating kind a lot, some grating diffration unit has been no longer the slit under ordinary meaning.Therefore, nowadays grating is defined as, and can make amplitude or the phase place of incident light, or both produce the optical element of periodic spatial modulation simultaneously.Grating is for transmitted light according to it or when classifying for reflected light, can be divided into transmission grating and reflection grating two class.Wherein transmission grating is generally on optical plate glass, depict the wide equally spaced indentation of a lot of make; Indentation goes out light tight, and the place of quarter is then the slit of printing opacity.
Along with photo measure and optical information processing development, require more and more to require to simplify light path and step, obtained changed grating parameter and the structure of electric control by external circuits, and need not change grating, this method has obvious advantage.
With this for principle similar have patent CN1922914, be utilize photo-thermal effect, change the refractive index of lens, thus change the direction of propagation of light beam, reach the requirement changing light path.This patent keeps original device, does not increase optical device, does not change light source position, simplifies light path, step thus change light path there is greater advantage.But beam light source is wayward and monitoring, uses herein and more holds manageable electric signal, propose the method for electric control.
Summary of the invention
The object of the invention is: a kind of method that changeable optical grating construction based on electrocaloric effect is provided, the method can control with electric signal, when not increasing circuit and node, change the refractive index of transparent medium, namely after incident parallel beam studs with the lens of resistor disc in passing through, heat due to resistor disc generation changes the refractive index of medium, change the light transmitting properties of medium, reach the left and right changing grating constant, finally change light beam by the diffracted beam after this grating.
To achieve these goals, technical scheme of the present invention is:
Based on a control method for the changeable optical grating construction of electrocaloric effect, comprise the following steps:
Step 1, set up the changeable optical grating construction based on electrocaloric effect, comprise source of parallel light, transparent medium, resistor disc, signal generator, power supply, multiple resistor disc is equidistantly parallel is embedded in transparent medium inside, resistor disc is parallel with the incident light of source of parallel light, and perpendicular to transparent medium;
Step 2, is connected in series signal generator, power supply after each resistor disc one end conductor in parallel successively; By the signal generator in external circuits, this signal generator provides the output level of various frequency, waveform, can produce some specific periodically function of time waveform;
Step 3, source of parallel light by transparent medium, after equally spaced resistor disc is connected with external signal generator, power supply, power supply is powered to resistor disc, according to grating equation dsin θ=m λ, because incident light is monochromatic collimated beam, the wavelength X of light is constant, and therefore when grating constant diminishes, sin θ becomes large, namely angle of diffraction becomes large, when d becomes large, sin θ diminishes, and namely angle of diffraction diminishes, by the change of d, directly results in the change in the direction of the diffraction light of outgoing;
Step 4, conditioning signal generator, the different current signal waveform of generation, by the variation tendency that the diffraction angle of change outgoing is different, thus reaches the effect of electric control.
Further, the multiple resistor discs in described step 1 are identical, and thickness is within the scope of 0.8-2mm.
Further, in described step 1, transparent medium is polyimide resin, and keeping solidifying the maximum temperature that can bear is 300 DEG C.
Further, the laying method of described polyimide resin and resistor disc is: polyimide resin is at high operating temperatures for liquid, when resin is liquid, be placed in liquefied resin by equally spaced for identical heating resistor sheet, liquefied resin is now placed in a mold, and mould has corresponding data mark, is used for equidistantly placing heating resistor sheet accurately, then by polyimide resin hardening by cooling, finished product is obtained.
Further, described polyimide resin hardening by cooling process is a polymerization process not adding rigidizer, its polymerization process also in two steps: the first step is that polyimide preformed polymer melts at low temperatures; Second step is that prepolymer is cyclized into infusibility polyimide at relatively high temperatures, is specially: mould heat hardening 30-40 minute on hot press completes a underhardening, then in electric dry oven, carries out secondary supplement sclerosis.
Further, the supply voltage in described step 2 selects 5v, and the maximum output current that signal generator passes into is 2.5ma, and the temperature of heating resistor sheet can reach 250 DEG C according to resistance difference is maximum.
Further, the distance of the transparent medium between each resistor disc described is greater than the thickness of resistor disc.
The present invention has following technical characterstic:
1) this device comprises source of parallel light, light transmission medium, resistor disc, power supply and signal generator.The optical routing source of parallel light adopted, light transmission medium mirror composition.Be inlaid with identical resistor disc in light transmission medium, and resistor disc is equidistant placement, resistor disc is perpendicular to light transmission medium, and the monochromatic collimated beam in incidence is parallel.After power supply powers to the resistor disc of interior edge, electric energy conversion becomes heat energy, defines a region of thermal effect, place around resistor disc, heat changes the microstructure of medium, and then change the transmissivity of medium, make thermal effect also substantially become lighttight region, thus change the grating constant of grating.
2) according to grating equation dsin θ=m λ, because incident light is monochromatic collimated beam, the wavelength X of light is constant, and therefore when d diminishes, sin θ becomes large, and namely angle of diffraction becomes large, and when d becomes large, sin θ diminishes, and namely angle of diffraction diminishes.The i.e. change of d, directly results in the change of the diffraction light of outgoing.
3) transparent dielectric material is polyimide resin, the heat absorption capacity of this material is fabulous, fusing point is at 300 DEG C, heating resistor generates heat according to different resistance values, and scope is maximum reaches 250 DEG C, now the microstructure change of polyimide resin is violent, its light transmission is subject to extreme influence, and incident parallel light is now difficult to through transparent medium, and namely angle of diffraction now will be infinitely close to 90 °.This makes the present invention after heating resistor energising, and be 0 ° ~ 90 ° substantially to the coverage of the angle of diffraction of incident parallel light, angle of diffraction scope is larger compared with other schemes, and the grating constant variation range also just making angle of diffraction affect is larger.
4) by external circuits control system, control inputs enters the current signal of resistor disc, signal generator can input timing pulse signal, sinusoidal signal, the thin signal of triangle etc., the change that the difference of signal can cause region of thermal effect to be formed, d can have the change of corresponding different wave along with different current signal waveform, make the variation tendency of diffraction angle different, thus reach the effect of the change optical grating construction of electric control.
Accompanying drawing explanation
Fig. 1 is specific embodiment of the invention structural representation.
Fig. 2 is that light is having thermal effect effect and contrasting schematic diagram without the light beam under thermal effect effect.
In figure: source of parallel light 1, transparent medium 2, resistor disc 3, signal generator 4, power supply 5, first light beam 6, region of thermal effect 7, second light beam 8.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Based on a control method for the changeable optical grating construction of electrocaloric effect, comprise the following steps:
Step 1, set up the changeable optical grating construction based on electrocaloric effect, comprise source of parallel light 1, transparent medium 2, resistor disc 3, signal generator 4, power supply 5, multiple resistor disc 3 is equidistantly parallel is embedded in transparent medium 2 inside, resistor disc 3 is parallel with the incident light of source of parallel light 1, and perpendicular to transparent medium 2;
Step 2, is connected in series signal generator 4, power supply 5 after each resistor disc 3 one end conductor in parallel successively; By the signal generator 4 in external circuits, this signal generator 4 provides the output level of various frequency, waveform, can produce some specific periodically function of time waveform;
Step 3, source of parallel light 1 by transparent medium 2, after equally spaced resistor disc 3 is connected with external signal generator 4, power supply 5, power supply 5 powers, according to grating equation dsin θ=m λ, because incident light is monochromatic collimated beam to resistor disc 3, the wavelength X of light is constant, and therefore when grating constant diminishes, sin θ becomes large, namely angle of diffraction becomes large, when d becomes large, sin θ diminishes, and namely angle of diffraction diminishes, by the change of d, directly results in the change in the direction of the diffraction light of outgoing;
Step 4, conditioning signal generator 4, the different current signal waveform of generation, by the variation tendency that the diffraction angle of change outgoing is different, thus reaches the effect of electric control.
A kind of method specifically describing further and the invention provides changeable optical grating construction based on electrocaloric effect is described below with reference to Fig. 1-Fig. 2.Incident light source is that the source of parallel light 1 of monochrome is by a transparent medium 2, transparent medium 2 inside is inlaid with resistor disc 3, heating resistor sheet is identical, the thickness requirements of resistor disc 3 is thinner, generally can within the scope of 0.8-2mm (the preferred 1.2mm of the present embodiment), their equally spaced inside being placed in this transparent medium, placement direction is perpendicular to this transparent medium and is parallel to incident light.Transparent medium 2 material is polyimide resin (C35H28N2O7), and keeping solidifying the maximum temperature that can bear is 300 DEG C.Laying method is: resin is at high operating temperatures for liquid, when resin is liquid, be placed in liquefied resin by equally spaced for identical heating resistor sheet, liquefied resin is now placed in a mold, mould has corresponding data mark, be used for equidistantly placing heating resistor sheet accurately, then by resin hardening by cooling, obtain finished product.The hardening process of polyimide resin is a polymerization process not adding rigidizer, and its polymerization process also in two steps.The first step is that polyimide preformed polymer melts at low temperatures.Second step is that prepolymer is cyclized into infusibility polyimide at relatively high temperatures.Concrete method for curing is: mould is once hardened in electric dry oven and carries out secondary supplement sclerosis for heat hardening 30-40 minute on hot press.The distance of the transparent medium 2 between each resistor disc needs the thickness being far longer than resistor disc, the impact after being formed for region of thermal effect in order to last trading day sheet 3 thickness.When power supply 5 powers to these resistor discs 3, due to electrocaloric effect, electric energy conversion becomes heat energy, a region of thermal effect, place is defined around resistor disc 3, heat changes the microstructure of medium, thus change the transmissivity of this medium, the namely refractive index of this region of thermal effect, make this region also substantially become lighttight region, this just changes the grating constant of grating, according to grating equation dsin θ=m λ, because incident light is monochromatic collimated beam, the wavelength X of light is constant, therefore when d becomes large, sin θ diminishes, and angle of diffraction diminishes.The i.e. change of d, directly results in the change in the direction of the diffraction light of outgoing, and this just changes the effect of grating.Power supply 5 is connected with signal generator 4, and power to signal generator 4, supply voltage selects 5v, is 2.5ma by the maximum output current after signal generator 4, and the temperature of heating resistor is different according to the resistance of resistor disc, and control temperature is maximum reaches 250 DEG C.
By the signal generator 4 in external circuits, this signal generator 4 can provide various frequency, waveform and output level, some specific periodically function of time waveform can be produced, such as, sinusoidal wave, pulse waveform, the signals such as triangular waveform, different current signals changes the electric current input of resistor disc, control the production process of heat, thus the forming region of thermal effect can produce different forming processes along with different current signals, this directly affects the change procedure of grating constant, according to grating equation dsin θ=m λ, angle of diffraction also can along with the variation tendency of d, define corresponding change, reach the effect of electric control.Different waveforms can bring different effects, electric current nonlinear change in a certain scope of specifying can be made, the grating constant that resistor disc is formed after producing heat behind region of thermal effect in transparent medium also can by certain Long-term change trend in certain scope, thus angle of diffraction can along with there being corresponding nonlinear change, this variation range can because of the different demands for grating, a controlled parameter is become by control inputs level, and the trend waveform of change changes along with different electric signal, reach the changeable optical grating construction controlled by electric signal.
Composition graphs 1, a kind of method of the changeable optical grating construction based on electrocaloric effect comprises source of parallel light 1, transparent medium 2, resistor disc 3, signal generator 4, power supply 5.Wherein resistor disc 3 is identical resistor discs, is set in transparent medium 2 inner in these resistor discs are equidistant, parallel with the incident light of source of parallel light 1, perpendicular to transparent medium 2, signal generator 4, power supply 5 is in parallel with resistor disc 3, and each resistor disc is directly for being connected in parallel.
Principle of the present invention is: source of parallel light 1 is by transparent medium 2, due to equally spaced resistor disc 3 and external signal generator 4, after power supply 5 is connected, power supply 5 powers to resistor disc 3, due to electrocaloric effect, be heat energy by the electric energy conversion of resistor disc, define region of thermal effect, in region of thermal effect, due to the effect of heat, change the microstructure of transparent medium 2, thus change its refractive index, region of thermal effect is made substantially to become lighttight part, thus change the grating constant of grating, according to grating equation dsin θ=m λ, because incident light is monochromatic collimated beam, the wavelength X of light is constant, therefore when d diminishes, sin θ becomes large, namely angle of diffraction becomes large, when d becomes large, sin θ diminishes, namely angle of diffraction diminishes.The i.e. change of d, directly results in the change in the direction of the diffraction light of outgoing, and this just changes the effect of grating.And the different current signal waveform that signal generator produces, the variation tendency (this change is nonlinear) that the diffraction angle of for a change outgoing is different, thus reach the effect of electric control.
Composition graphs 2, when power supply does not start to power to resistor disc 3, incident parallel light source 1 is by after transparent medium 2, and the diffracted beam of outgoing is the first light beam 6, and the angle of diffraction of this light beam is θ 1, and grating constant is now d1; When power supply starts after to resistor disc 3 power supply, transparent medium 2 inside defines region of thermal effect 7, and the diffracted beam of outgoing is now the second light beam 8, and the angle of diffraction of this light beam is θ 2, and grating constant is now d2.Transparent dielectric material is polyimide resin, the heat absorption capacity of this material is fabulous, fusing point is at 300 DEG C, heating resistor generates heat according to different resistance values, and scope is maximum reaches 250 DEG C, now the microstructure change of polyimide resin is violent, its light transmission is subject to extreme influence, and incident parallel light source 1 is now difficult to through transparent medium 27, and namely angle of diffraction now will be infinitely close to 90 °.This makes the present invention after heating resistor energising, and be 0 ° ~ 90 ° substantially to the coverage of the angle of diffraction of incident parallel light, angle of diffraction scope is larger compared with other schemes, and the grating constant variation range also just making angle of diffraction affect is larger.
Reference specific features is to the explanation that invention has been principle and application above, make those skilled in the art can understand the present invention better, other way of realization can be designed to be applicable to special-purpose under the prerequisite of scope not deviating from appended claims.
Claims (7)
1., based on a control method for the changeable optical grating construction of electrocaloric effect, it is characterized in that, comprise the following steps:
Step 1, set up the changeable optical grating construction based on electrocaloric effect, comprise source of parallel light (1), transparent medium (2), resistor disc (3), signal generator (4), power supply (5), multiple resistor disc (3) is equidistantly parallel is embedded in transparent medium (2) inside, resistor disc (3) is parallel with the incident light of source of parallel light (1), and perpendicular to transparent medium (2);
Step 2, is connected in series signal generator (4) after the conductor in parallel of each resistor disc (3) one end, power supply (5) successively; By the signal generator (4) in external circuits, this signal generator (4) provides the output level of various frequency, waveform, can produce some specific periodically function of time waveform;
Step 3, source of parallel light (1) is by transparent medium (2), after equally spaced resistor disc (3) is connected with external signal generator (4), power supply (5), power supply (5) is powered to resistor disc (3), according to grating equation dsin θ=m λ, because incident light is monochromatic collimated beam, the wavelength of light enters constant, and therefore when grating constant diminishes, sin θ becomes large, namely angle of diffraction becomes large, when d becomes large, sin θ diminishes, and namely angle of diffraction diminishes, by the change of d, directly results in the change in the direction of the diffraction light of outgoing;
Step 4, conditioning signal generator (4), the different current signal waveform of generation, by the variation tendency that the diffraction angle of change outgoing is different, thus reaches the effect of electric control.
2. the control method of the changeable optical grating construction based on electrocaloric effect according to claim 1, is characterized in that, the multiple resistor discs (3) in described step 1 are identical, and thickness is within the scope of 0.8-2mm.
3. the control method of the changeable optical grating construction based on electrocaloric effect according to claim 1, is characterized in that, in described step 1, transparent medium (2) is polyimide resin, and keeping solidifying the maximum temperature that can bear is 300 DEG C.
4. the control method of the changeable optical grating construction based on electrocaloric effect according to claim 3, it is characterized in that, the laying method of described polyimide resin and resistor disc (3) is: polyimide resin is at high operating temperatures for liquid, when resin is liquid, be placed in liquefied resin by equally spaced for identical heating resistor sheet (3), liquefied resin is now placed in a mold, mould has corresponding data mark, be used for equidistantly placing heating resistor sheet accurately, then by polyimide resin hardening by cooling, finished product is obtained.
5. the control method of the changeable optical grating construction based on electrocaloric effect according to claim 4, is characterized in that, described polyimide resin hardening by cooling process is a polymerization process not adding rigidizer, its polymerization process also in two steps:
The first step is that polyimide preformed polymer melts at low temperatures;
Second step is that prepolymer is cyclized into infusibility polyimide at relatively high temperatures, is specially: mould heat hardening 30-40 minute on hot press completes a underhardening, then in electric dry oven, carries out secondary supplement sclerosis.
6. the control method of the changeable optical grating construction based on electrocaloric effect according to claim 1, it is characterized in that, power supply (5) voltage in described step 2 selects 5v, the maximum output current that signal generator (4) passes into is 2.5ma, and the temperature of heating resistor sheet (3) can reach 250 DEG C according to resistance difference is maximum.
7. the control method of the changeable optical grating construction based on electrocaloric effect according to claim 1, is characterized in that, the distance of the transparent medium (2) between described each resistor disc (3) is greater than the thickness of resistor disc.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109828325A (en) * | 2019-03-25 | 2019-05-31 | 苏州科技大学 | A kind of Temperature Control Type Grating Film |
| CN110007474A (en) * | 2019-03-25 | 2019-07-12 | 苏州科技大学 | A kind of electric-controlled type solid 3D Grating Film |
| CN111708175A (en) * | 2020-06-29 | 2020-09-25 | 国科光芯(海宁)科技股份有限公司 | Structured light projection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1424602A (en) * | 2003-01-10 | 2003-06-18 | 中国科学院上海光学精密机械研究所 | Optical fiber tunable polarizer and manufacturing method thereof |
| CN1466014A (en) * | 2002-06-04 | 2004-01-07 | �踻�����ܹ�ҵ�����ڣ�����˾ | Optical fibre Bragg grating |
| CN101339270A (en) * | 2008-08-13 | 2009-01-07 | 中国科学院上海光学精密机械研究所 | Active controllable optical fiber grating |
| CA2553832C (en) * | 2004-02-20 | 2012-11-06 | Dainichiseika Color & Chemicals Mfg. Co., Ltd. | Optically controlled optical-path-switching-type-optical signal transmission apparatus, and method of switching optical paths for optical signals |
-
2015
- 2015-06-29 CN CN201510367685.8A patent/CN104914593A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1466014A (en) * | 2002-06-04 | 2004-01-07 | �踻�����ܹ�ҵ�����ڣ�����˾ | Optical fibre Bragg grating |
| CN1424602A (en) * | 2003-01-10 | 2003-06-18 | 中国科学院上海光学精密机械研究所 | Optical fiber tunable polarizer and manufacturing method thereof |
| CA2553832C (en) * | 2004-02-20 | 2012-11-06 | Dainichiseika Color & Chemicals Mfg. Co., Ltd. | Optically controlled optical-path-switching-type-optical signal transmission apparatus, and method of switching optical paths for optical signals |
| CN101339270A (en) * | 2008-08-13 | 2009-01-07 | 中国科学院上海光学精密机械研究所 | Active controllable optical fiber grating |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109828325A (en) * | 2019-03-25 | 2019-05-31 | 苏州科技大学 | A kind of Temperature Control Type Grating Film |
| CN110007474A (en) * | 2019-03-25 | 2019-07-12 | 苏州科技大学 | A kind of electric-controlled type solid 3D Grating Film |
| CN111708175A (en) * | 2020-06-29 | 2020-09-25 | 国科光芯(海宁)科技股份有限公司 | Structured light projection device |
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Application publication date: 20150916 |