CN112731692A - Method and system for regulating and controlling phase distribution curved surface - Google Patents
Method and system for regulating and controlling phase distribution curved surface Download PDFInfo
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- CN112731692A CN112731692A CN202110012231.4A CN202110012231A CN112731692A CN 112731692 A CN112731692 A CN 112731692A CN 202110012231 A CN202110012231 A CN 202110012231A CN 112731692 A CN112731692 A CN 112731692A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000001276 controlling effect Effects 0.000 title claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 14
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 claims abstract description 58
- 230000010287 polarization Effects 0.000 claims abstract description 11
- 230000003044 adaptive effect Effects 0.000 claims abstract description 8
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000000605 extraction Methods 0.000 claims description 12
- 230000003321 amplification Effects 0.000 claims description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 9
- 230000003750 conditioning effect Effects 0.000 claims 3
- 230000033228 biological regulation Effects 0.000 abstract description 10
- 238000002834 transmittance Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
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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
- G02F1/0136—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 for the control of polarisation, e.g. state of polarisation [SOP] control, polarisation scrambling, TE-TM mode conversion or separation
Abstract
The invention provides a method and a system for regulating and controlling a phase distribution curved surface, wherein the method comprises the following steps: firstly, acquiring a gray signal in an image; the image is determined from the first beam; secondly, calculating the gray signals to obtain a phase distribution curved surface; calculating the error between the phase distribution curved surface and the set phase distribution curved surface; then judging whether the error is less than or equal to a set threshold value or not, and obtaining a judgment result; if the judgment result shows that the image is a gray scale image, stopping acquiring the gray scale signal in the image; and if the judgment result shows that the gray scale signal is not obtained, substituting the error into an adaptive algorithm, calculating to obtain an adjusted voltage, applying the adjusted voltage to the electronic control phaser, enabling the electronic control phaser to carry out polarization and phase depth modulation processing on the input light beam according to the adjusted voltage to generate a first light beam, and returning to obtain the gray scale signal again. The invention improves the diffraction efficiency of the electric control phaser and the regulation efficiency and the precision of the phase distribution curved surface.
Description
Technical Field
The invention relates to the technical field of optics, in particular to a method and a system for regulating and controlling a phase distribution curved surface.
Background
Because the box thickness of the actually processed electric control phase device is uneven, the actual phase distribution curved surface is different from the ideal phase distribution curved surface. In the prior art, the phase depth of an electric control phase modulation device cannot be directly represented and displayed, and only the voltage applied to the electric control phase modulation device can be adjusted blindly, so that an ideal phase distribution curved surface is finally obtained. In the prior art, closed-loop control is not realized, voltage can only be continuously adjusted by people, and the adjustment efficiency and precision are low and manpower is wasted.
Disclosure of Invention
The invention aims to provide a method and a system for regulating and controlling a phase distribution curved surface so as to improve the regulation and control efficiency and precision of the phase distribution curved surface.
In order to achieve the above object, the present invention provides a method for regulating and controlling a phase distribution curved surface, the method comprising:
s1: acquiring a gray signal in an image; the image is determined from the first beam;
s2: calculating the gray signals to obtain a phase distribution curved surface;
s3: calculating the error between the phase distribution curved surface and a set phase distribution curved surface;
s4: judging whether the error is less than or equal to a set threshold value or not, and obtaining a judgment result;
if the judgment result shows that the image is a gray scale image, stopping acquiring the gray scale signal in the image;
and if the judgment result shows that the current light beam is not the first light beam, substituting the error into an adaptive algorithm, calculating to obtain an adjusted voltage, applying the adjusted voltage to the electronic control phaser, enabling the electronic control phaser to perform polarization and phase depth modulation processing on the input light beam according to the adjusted voltage to generate a first light beam, and returning to the step S1.
Optionally, before S1, the method further includes:
and applying an initial voltage to the electrically-controlled phaser so that the electrically-controlled phaser performs polarization and phase depth modulation processing on the input light beam according to the initial voltage to generate a first light beam.
Optionally, the adaptive algorithm comprises: non-blind algorithms, blind algorithms or semi-blind algorithms combining blind and non-blind algorithms.
The invention also provides a system for regulating and controlling the phase distribution curved surface, which comprises:
the electric control phaser is used for carrying out polarization and phase depth modulation processing on the input light beam according to the initial voltage or the adjusted voltage to generate a first light beam;
the optical amplification device is arranged corresponding to the electric control phaser and is used for amplifying and displaying the first light beam;
the gray signal extraction device is arranged corresponding to the optical amplification device and is used for shooting the amplified first light beam displayed on the optical amplification device, generating an image and extracting a gray signal in the image;
the computer is connected with the gray signal extraction device and used for calculating and judging the gray signals in the acquired image according to the regulation and control method of the phase distribution curved surface to obtain regulated voltage;
and the driving circuit is respectively connected with the computer and the electric control phaser and is used for applying initial voltage or adjusted voltage to the electric control phaser.
Optionally, the system for regulating and controlling a phase distribution surface further includes:
and the laser light source is arranged corresponding to the electric control phaser and is used for emitting light beams to the electric control phaser.
Optionally, the grayscale signal extraction device is a color camera or an industrial camera.
Optionally, the optical amplifying device is a microscope lens or a laser beam expander.
Optionally, the electrically controlled phaser is a transmissive electrically controlled phaser or a reflective electrically controlled phaser.
Optionally, the transmission type electronically controlled phaser has a polarizer on each of the incident surface and the exit surface.
Optionally, the incident surface of the reflective electrically-controlled phaser has a polarizer.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a method and a system for regulating and controlling a phase distribution curved surface, wherein the method comprises the following steps: firstly, acquiring a gray signal in an image; the image is determined from the first beam; secondly, calculating the gray signals to obtain a phase distribution curved surface; calculating the error between the phase distribution curved surface and the set phase distribution curved surface; then judging whether the error is less than or equal to a set threshold value or not, and obtaining a judgment result; if the judgment result shows that the image is a gray scale image, stopping acquiring the gray scale signal in the image; and if the judgment result shows that the gray scale signal is not obtained, substituting the error into an adaptive algorithm, calculating to obtain an adjusted voltage, applying the adjusted voltage to the electronic control phaser, enabling the electronic control phaser to carry out polarization and phase depth modulation processing on the input light beam according to the adjusted voltage to generate a first light beam, and returning to obtain the gray scale signal again. The invention improves the diffraction efficiency of the electric control phaser and the regulation efficiency and the precision of the phase distribution curved surface.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flow chart of a method for adjusting a phase distribution surface according to an embodiment of the present invention;
fig. 2 is a structural diagram of a regulation and control system of a phase distribution curved surface according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a method and a system for regulating and controlling a phase distribution curved surface so as to improve the regulation and control efficiency and precision of the phase distribution curved surface.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a flowchart of a method for adjusting a phase distribution surface according to an embodiment of the present invention, and as shown in fig. 1, the method for adjusting a phase distribution surface includes:
s1: acquiring a gray signal in an image; the image is determined from the first light beam.
S2: and calculating the gray signals to obtain a phase distribution curved surface.
S3: and calculating the error between the phase distribution curved surface and the set phase distribution curved surface.
S4: and judging whether the error is less than or equal to a set threshold value or not, and obtaining a judgment result.
And if the judgment result shows that the gray scale signal in the image is acquired, stopping acquiring the gray scale signal in the image.
And if the judgment result shows that the error is not greater than the set threshold, substituting the error into an adaptive algorithm, calculating to obtain an adjusted voltage, applying the adjusted voltage to an electronic control phaser, enabling the electronic control phaser to perform polarization and phase depth modulation processing on the input light beam according to the adjusted voltage to generate a first light beam, and returning to the step S1 until the error between the phase distribution curved surface and the set phase distribution curved surface is less than or equal to the set threshold.
In the embodiment of the present invention, before S1, the method further includes:
and applying an initial voltage to the electrically-controlled phaser so that the electrically-controlled phaser performs polarization and phase depth modulation processing on the input light beam according to the initial voltage to generate a first light beam.
In an embodiment of the present invention, the adaptive algorithm includes: non-blind algorithms, blind algorithms or semi-blind algorithms combining blind and non-blind algorithms. The non-blind algorithm is a minimum mean square error algorithm, a minimum mean square algorithm or a least square algorithm. The blind algorithm is a decision feedback algorithm.
Fig. 2 is a structural diagram of a regulation and control system of a phase distribution curved surface according to an embodiment of the present invention, and as shown in fig. 2, the present invention further provides a regulation and control system of a phase distribution curved surface, where the regulation and control system of a phase distribution curved surface includes: the device comprises an electric control phaser 1, an optical amplification device 2, a gray signal extraction device 3, a computer 4 and a drive circuit 5. The optical amplifying device 2 is arranged corresponding to the electric control phaser 1. The grayscale signal extraction device 3 is disposed corresponding to the optical amplification device 2. The computer 4 is connected with the gray signal extraction device 3. The driving circuit 5 is respectively connected with the computer 4 and the electric control phaser 1.
The electric control phaser 1 is used for carrying out polarization and phase depth modulation processing on an input light beam according to an initial voltage or an adjusted voltage to generate a first light beam. The optical magnifying device 2 is used for magnifying and displaying the first light beam. The optical amplifying device 2 is a microscope lens or a laser beam expander. The gradation signal extraction means 3 is for capturing the amplified first light beam displayed on the optical amplification means 2 and generating an image, and extracting a gradation signal in the image. The grayscale signal extraction device 3 is a color camera or an industrial camera. The computer 4 is used for calculating and judging the acquired gray signals in the image according to the regulation and control method of the phase distribution curved surface to obtain the regulated voltage. The driving circuit 5 is configured to apply an initial voltage or an adjusted voltage to the electrically controlled phaser 1.
In the embodiment of the present invention, the system for regulating and controlling a phase distribution curved surface further includes: and the laser light source 6 is arranged corresponding to the electric control phaser 1 and is used for emitting light beams to the electric control phaser 1.
In the embodiment of the present invention, the electrically controlled phaser 1 is a transmissive electrically controlled phaser or a reflective electrically controlled phaser. The incident surface and the emergent surface of the transmission type electric control phaser are respectively provided with a polaroid. The incidence surface of the reflective electric control phaser is provided with a polaroid. When the electric control phaser 1 is a transmission type electric control phaser, a light beam generated by the laser light source 6 passes through the first polaroid 1-1 to form a polarized light beam. After the polarized light beam is subjected to phase depth modulation by the electric control phase shifter, the optical path difference of the corresponding area of the light beam is changed, and after the polarized light beam passes through the second polaroid 1-2, the light intensity of the corresponding area of the light beam is changed along with the change of the optical path difference, so that a first light beam is formed. When the electric control phaser 1 is a reflective electric control phaser, a light beam generated by the laser source 6 passes through the first polaroid 1-1 to form a polarized light beam. The polarized light beam forms a first light beam after being subjected to phase depth modulation of the electric control phaser.
The invention can be widely applied to an electric control phase modulation device, and can detect, regulate and optimize the phase distribution curved surface, so that the actual phase distribution curved surface is closer to an ideal phase distribution curved surface.
The invention compares the actual relative transmittance distribution curved surface with the expected ideal relative transmittance distribution curved surface, substitutes the relative transmittance distribution curved surface into a self-adaptive algorithm to obtain a new voltage signal, and forms an automatic closed-loop control loop. The problem of iterative debugging complexity is solved, the time in the phase modulation process is greatly reduced, and the modulation precision of phase distribution is improved.
The invention can accurately represent the phase distribution, and simultaneously can control the driving circuit 5 through the computer 4, so that the actual phase distribution curved surface is close to the ideal phase distribution curved surface, and the diffraction efficiency of the electric control phaser 1 is improved. In order to solve the problem of phase distribution detection, the conversion from transmittance to gray scale signal is realized by the gray scale signal extraction means 3. Aiming at the problem of complex iterative debugging, the time in the phase modulation process is greatly reduced through a self-adaptive algorithm, and the phase modulation characteristic is improved. The invention can be applied to electric control phase devices such as liquid crystal gratings, liquid crystal lenses, spatial light modulators, digital micro-reflectors, silicon-based liquid crystals and the like in the future.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to assist in understanding the core concepts of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. A method for regulating and controlling a phase distribution curved surface is characterized by comprising the following steps:
s1: acquiring a gray signal in an image; the image is determined from the first beam;
s2: calculating the gray signals to obtain a phase distribution curved surface;
s3: calculating the error between the phase distribution curved surface and a set phase distribution curved surface;
s4: judging whether the error is less than or equal to a set threshold value or not, and obtaining a judgment result;
if the judgment result shows that the image is a gray scale image, stopping acquiring the gray scale signal in the image;
and if the judgment result shows that the current light beam is not the first light beam, substituting the error into an adaptive algorithm, calculating to obtain an adjusted voltage, applying the adjusted voltage to the electronic control phaser, enabling the electronic control phaser to perform polarization and phase depth modulation processing on the input light beam according to the adjusted voltage to generate a first light beam, and returning to the step S1.
2. The method for controlling a phase distribution surface according to claim 1, further comprising, before S1:
and applying an initial voltage to the electrically-controlled phaser so that the electrically-controlled phaser performs polarization and phase depth modulation processing on the input light beam according to the initial voltage to generate a first light beam.
3. The method for controlling a phase distribution surface according to claim 1, wherein the adaptive algorithm comprises: non-blind algorithms, blind algorithms or semi-blind algorithms combining blind and non-blind algorithms.
4. A system for controlling a phase distribution surface, the system comprising:
the electric control phaser is used for carrying out polarization and phase depth modulation processing on the input light beam according to the initial voltage or the adjusted voltage to generate a first light beam;
the optical amplification device is arranged corresponding to the electric control phaser and is used for amplifying and displaying the first light beam;
the gray signal extraction device is arranged corresponding to the optical amplification device and is used for shooting the amplified first light beam displayed on the optical amplification device, generating an image and extracting a gray signal in the image;
a computer connected to the grayscale signal extraction device, for calculating and judging the grayscale signal in the acquired image according to the method for adjusting and controlling a phase distribution curve according to any one of claims 1 to 3, so as to obtain an adjusted voltage;
and the driving circuit is respectively connected with the computer and the electric control phaser and is used for applying initial voltage or adjusted voltage to the electric control phaser.
5. The system for conditioning a phase profile of claim 4, further comprising:
and the laser light source is arranged corresponding to the electric control phaser and is used for emitting light beams to the electric control phaser.
6. The system for conditioning a phase profile according to claim 4, wherein the grayscale signal extraction device is a color camera or an industrial camera.
7. The system for conditioning a phase profile surface of claim 4, wherein the optical magnification device is a microscope lens or a laser beam expander.
8. The system for controlling a phase profile according to claim 4, wherein the electrically controlled phaser is a transmissive electrically controlled phaser or a reflective electrically controlled phaser.
9. The system for modulating a phase profile of claim 8, wherein said transmissive electrically controlled phaser has a polarizer on each of the entrance and exit surfaces.
10. The system for modulating a phase profile of claim 8, wherein the incident surface of said electronically controlled reflective phaser comprises a polarizer.
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| CN202110012231.4A CN112731692B (en) | 2021-01-06 | 2021-01-06 | Method and system for regulating and controlling phase distribution curved surface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115996285A (en) * | 2023-03-22 | 2023-04-21 | 南昌虚拟现实研究院股份有限公司 | Phase distribution acquisition method, apparatus, electronic device and storage medium |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010217853A (en) * | 2008-06-18 | 2010-09-30 | Sharp Corp | Liquid crystal panel and liquid crystal display |
| US20130113641A1 (en) * | 2010-05-19 | 2013-05-09 | Nec Corporation | Optical intensity-to-phase converter, mach-zehnder interferometer, optical a/d converter, and method of constructing optical intensity-to-phase converter |
| CN104122609A (en) * | 2014-07-29 | 2014-10-29 | 深圳大学 | Method for computing actual focal length of variable-focal-length lens based on liquid crystal spatial light modulator |
| JP2015200835A (en) * | 2014-04-10 | 2015-11-12 | キヤノン株式会社 | Imaging device and phase estimation method |
| CN105675150A (en) * | 2016-01-15 | 2016-06-15 | 中国科学技术大学 | Method for real-time detection of diffraction phase of structure light field |
| CN111290147A (en) * | 2020-04-01 | 2020-06-16 | 深圳大学 | Device and method for regulating and controlling polarization state of light beam |
| CN111537197A (en) * | 2019-12-25 | 2020-08-14 | 上海瑞立柯信息技术有限公司 | Universal calibration method for spatial light modulator phase measurement |
| CN111599321A (en) * | 2019-02-20 | 2020-08-28 | 堺显示器制品株式会社 | Liquid crystal display device and image signal correction method |
| CN111630447A (en) * | 2018-03-12 | 2020-09-04 | Jvc建伍株式会社 | Liquid crystal element, phase modulation device, and method for controlling liquid crystal element |
-
2021
- 2021-01-06 CN CN202110012231.4A patent/CN112731692B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010217853A (en) * | 2008-06-18 | 2010-09-30 | Sharp Corp | Liquid crystal panel and liquid crystal display |
| US20130113641A1 (en) * | 2010-05-19 | 2013-05-09 | Nec Corporation | Optical intensity-to-phase converter, mach-zehnder interferometer, optical a/d converter, and method of constructing optical intensity-to-phase converter |
| JP2015200835A (en) * | 2014-04-10 | 2015-11-12 | キヤノン株式会社 | Imaging device and phase estimation method |
| CN104122609A (en) * | 2014-07-29 | 2014-10-29 | 深圳大学 | Method for computing actual focal length of variable-focal-length lens based on liquid crystal spatial light modulator |
| CN105675150A (en) * | 2016-01-15 | 2016-06-15 | 中国科学技术大学 | Method for real-time detection of diffraction phase of structure light field |
| CN111630447A (en) * | 2018-03-12 | 2020-09-04 | Jvc建伍株式会社 | Liquid crystal element, phase modulation device, and method for controlling liquid crystal element |
| CN111599321A (en) * | 2019-02-20 | 2020-08-28 | 堺显示器制品株式会社 | Liquid crystal display device and image signal correction method |
| CN111537197A (en) * | 2019-12-25 | 2020-08-14 | 上海瑞立柯信息技术有限公司 | Universal calibration method for spatial light modulator phase measurement |
| CN111290147A (en) * | 2020-04-01 | 2020-06-16 | 深圳大学 | Device and method for regulating and controlling polarization state of light beam |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115996285A (en) * | 2023-03-22 | 2023-04-21 | 南昌虚拟现实研究院股份有限公司 | Phase distribution acquisition method, apparatus, electronic device and storage medium |
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