CN112269291A - Electric control type variable focus lens - Google Patents
Electric control type variable focus lens Download PDFInfo
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- CN112269291A CN112269291A CN202011207011.9A CN202011207011A CN112269291A CN 112269291 A CN112269291 A CN 112269291A CN 202011207011 A CN202011207011 A CN 202011207011A CN 112269291 A CN112269291 A CN 112269291A
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- Prior art keywords
- liquid crystal
- nematic liquid
- light
- electrodes
- zooming
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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
- G02F1/29—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 position or the direction of light beams, i.e. deflection
-
- 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
- G02F1/13—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 liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Geometry (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
Abstract
The invention belongs to the technical field of optical liquid crystal zooming, and particularly relates to a zoom lens. The electrically-controlled variable-focus lens comprises a circuit control part and a zooming part, wherein the zooming part comprises two nematic liquid crystal devices, each nematic liquid crystal device comprises a nematic liquid crystal box and two electrodes, the two electrodes are respectively arranged on two opposite sides of the nematic liquid crystal box, and the length directions of the two electrodes are consistent with the optical axis direction of the nematic liquid crystal box; the optical axes of the nematic liquid crystal cells of the two nematic liquid crystal devices are arranged perpendicular to each other; the circuit control part controls two electrodes of each nematic liquid crystal device through the output voltage value, so that potential difference is generated on two sides of a nematic liquid crystal box of the nematic liquid crystal device, and electric control zooming is realized. The invention not only can focus the E light part in the light field, but also can focus the O light.
Description
Technical Field
The invention belongs to the technical field of optical liquid crystal zooming, and particularly relates to a zoom lens.
Background
The existing liquid crystal variable focus system only performs on the E light (abnormal light) part of the light beam, and does not perform the zoom function on the O light (normal light) part of the light beam. Therefore, after the light field intensity passes through the liquid crystal zoom system, part of the intensity is lost, and the utilization rate of energy is influenced.
Disclosure of Invention
The invention aims to solve the technical problem that the existing liquid crystal variable-focus system only performs the zooming function on E light to cause light intensity loss, and provides an electric control type variable-focus lens.
The electrically-controlled variable focal length lens comprises a circuit control part and a zooming part, wherein the zooming part comprises two nematic liquid crystal devices, each nematic liquid crystal device comprises a nematic liquid crystal box and two electrodes, the two electrodes are respectively arranged on two opposite sides of the nematic liquid crystal box, and the length directions of the two electrodes are consistent with the optical axis direction of the nematic liquid crystal box;
the optical axes of the nematic liquid crystal cells of the two nematic liquid crystal devices are arranged perpendicular to each other;
the circuit control part controls the two electrodes of each nematic liquid crystal device through output voltage values, so that potential difference is generated on two sides of the nematic liquid crystal box of the nematic liquid crystal device, and electric control zooming is realized.
The invention outputs a preset voltage value through the circuit control part and transmits the preset voltage value to the electrode of the zooming part, so that potential difference is generated on two sides of the nematic liquid crystal box, the refractive index of the nematic liquid crystal box is changed, a convex lens structure is formed, and the effect of electrically controlled zooming is achieved. Because two layers of nematic liquid crystal boxes with mutually vertical optical axes are used, the focusing effect of O light and E light in an optical field can be realized, and the light intensity loss is reduced.
The thickness of the two nematic liquid crystal cells is the same.
The circuit control part comprises a single chip microcomputer, and the output end of the single chip microcomputer is respectively connected with the four electrodes through leads;
the preset voltage value is controlled and output by the single chip microcomputer, and the voltage is loaded to the four electrodes through the conducting wires, so that the voltages with the same magnitude on the two nematic phase liquid crystal boxes are enabled to be the same, and the refractive index change amounts of the two nematic phase liquid crystal boxes are the same.
The two nematic phase liquid crystal boxes are arranged in the left-right direction and are connected in an attaching mode, and two opposite sides of each nematic phase liquid crystal box are connected with the two electrodes in an attaching mode respectively.
When the optical axis direction of the nematic liquid crystal cell on the left side is the front-back direction, the optical axis direction of the nematic liquid crystal cell on the right side is the up-down direction;
the upper side and the lower side of the nematic liquid crystal box on the left side are respectively provided with one electrode, and the front side and the rear side of the nematic liquid crystal box on the right side are respectively provided with one electrode.
When the light field passes through the nematic liquid crystal cell on the left side, focusing action is generated on the light E passing through the nematic liquid crystal cell on the left side, and the light O is not converged; when the part of the light O in the nematic liquid crystal box on the left side reaches the nematic liquid crystal box on the right side, the light O is changed into the light E, namely the light E is converged in the nematic liquid crystal box on the right side, and the two nematic liquid crystal boxes act together to converge all light energy, so that the zooming of all light is realized.
The positive progress effects of the invention are as follows: the invention adopts the electric control type variable focus lens, which not only has focusing function on the E light part in the light field, but also has focusing function on the O light. The invention carries out zooming processing on the basis of no energy loss, thereby greatly increasing the utilization rate of energy. The device can be used for linearly polarized light and other polarized light, and can also achieve the focusing effect.
Drawings
Fig. 1 is a schematic diagram of a structure of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific drawings.
Referring to fig. 1, the electrically controlled variable focus lens includes a circuit control portion and a zooming portion.
The circuit control part comprises a singlechip as a control unit 1, and a determined voltage value is output through the control of the singlechip.
The zooming part comprises two nematic liquid crystal devices, each nematic liquid crystal device comprises a nematic liquid crystal cell and two electrodes, the two electrodes are respectively arranged on two opposite sides of the nematic liquid crystal cell, and the length directions of the two electrodes are consistent with the optical axis direction of the nematic liquid crystal cell. The optical axes of the nematic liquid crystal cells of the two nematic liquid crystal devices are arranged perpendicular to each other. As shown in fig. 1, when the optical axis direction of the left nematic liquid crystal cell 21 is the front-rear direction, the optical axis direction of the right nematic liquid crystal cell 22 is the vertical direction. The upper and lower sides of the left nematic liquid crystal cell 21 are provided with one electrode 31, respectively, and the front and rear sides of the right nematic liquid crystal cell 22 are provided with one electrode 32, respectively. The thickness of the nematic liquid crystal cell 21 is the same as that of the nematic liquid crystal cell 22. The nematic liquid crystal cell 21 and the nematic liquid crystal cell 22 are arranged in the left-right direction and are closely attached and connected, and the upper side and the lower side of the nematic liquid crystal cell 21 are closely attached and connected to the electrode 31, respectively. The front and rear sides of the nematic liquid crystal cell 22 are respectively closely attached to the electrodes 32.
The circuit control part controls two electrodes of each nematic liquid crystal device through the output voltage value, so that potential difference is generated on two sides of a nematic liquid crystal box of the nematic liquid crystal device, and electric control zooming is realized. Specifically, the output end of the single chip is connected to the two electrodes 31 and the two electrodes 32 through wires. The preset voltage value is controlled and output by the singlechip, and the voltage is loaded to the four electrodes through the leads, so that the two nematic liquid crystal cells have the same voltage, and the refractive index change of the two nematic liquid crystal cells is the same.
Referring to fig. 1, the light field passes through the zoom portion from the left side, when the light field passes through the nematic liquid crystal cell 21, the E light passing through the nematic liquid crystal cell 21 is focused, and the O light portions are not converged; because the optical axes of the nematic liquid crystal cell 21 and the nematic liquid crystal cell 22 are perpendicular to each other, and the main planes thereof are also perpendicular to each other, when the O light portion in the nematic liquid crystal cell 21 reaches the nematic liquid crystal cell on the right side, the O light is changed into the E light, that is, the convergence occurs in the nematic liquid crystal cell on the right side; in contrast, the E light in the nematic liquid crystal cell 21 reaches the nematic liquid crystal cell 22, and the E light is changed into the O light, and the convergence does not occur in the nematic liquid crystal cell 22. Under the combined action of two nematic liquid crystal cells with mutually vertical optical axes, all light energy is converged, and the zooming effect of all light is realized. Because the part of the nematic liquid crystal refractive index change caused by the electric field only acts on the E light part, the double-layer nematic liquid crystal cell is adopted to realize the action of all parts of the optical field.
The invention outputs a preset voltage value through the circuit control part and transmits the preset voltage value to the electrode of the zooming part, so that potential difference is generated on two sides of the nematic liquid crystal box, the refractive index of the nematic liquid crystal box is changed, a convex lens structure is formed, and the effect of electrically controlled zooming is achieved. Because two layers of nematic liquid crystal boxes with mutually vertical optical axes are used, the focusing effect of O light and E light in an optical field can be realized, and the light intensity loss is reduced.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The electronic control type variable focus lens comprises a circuit control part and a zooming part, and is characterized in that the zooming part comprises two nematic liquid crystal devices, each nematic liquid crystal device comprises a nematic liquid crystal box and two electrodes, the two electrodes are respectively arranged on two opposite sides of the nematic liquid crystal box, and the length directions of the two electrodes are consistent with the optical axis direction of the nematic liquid crystal box;
the optical axes of the nematic liquid crystal cells of the two nematic liquid crystal devices are arranged perpendicular to each other;
the circuit control part controls the two electrodes of each nematic liquid crystal device through output voltage values, so that potential difference is generated on two sides of the nematic liquid crystal box of the nematic liquid crystal device, and electric control zooming is realized.
2. The electrically variable focus lens of claim 1 wherein said nematic liquid crystal cells are of the same thickness.
3. The electrically controlled variable focus lens according to claim 1, wherein the circuit control portion comprises a single chip, and the output end of the single chip is connected to the four electrodes respectively through wires;
the preset voltage value is controlled and output by the single chip microcomputer, and the voltage is loaded to the four electrodes through the conducting wires, so that the voltages with the same magnitude on the two nematic phase liquid crystal boxes are enabled to be the same, and the refractive index change amounts of the two nematic phase liquid crystal boxes are the same.
4. An electrically controlled variable focus lens according to claim 1, 2 or 3, wherein two nematic liquid crystal cells are arranged in a left-right direction and are attached to each other, and two opposite sides of each nematic liquid crystal cell are respectively attached to two of said electrodes.
5. The electrically controlled variable focus lens according to claim 4, wherein when the optical axis direction of the nematic liquid crystal cell on the left side is the front-back direction, the optical axis direction of the nematic liquid crystal cell on the right side is the up-down direction;
the upper side and the lower side of the nematic liquid crystal box on the left side are respectively provided with one electrode, and the front side and the rear side of the nematic liquid crystal box on the right side are respectively provided with one electrode.
6. The electrically variable focal lens of claim 5, wherein when the light field passes through the nematic liquid crystal cell on the left side, the E light passing through the nematic liquid crystal cell on the left side is focused, and the O light portions are not converged; when the part of the light O in the nematic liquid crystal box on the left side reaches the nematic liquid crystal box on the right side, the light O is changed into the light E, namely the light E is converged in the nematic liquid crystal box on the right side, and the two nematic liquid crystal boxes act together to converge all light energy, so that the zooming of all light is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011207011.9A CN112269291A (en) | 2020-11-03 | 2020-11-03 | Electric control type variable focus lens |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011207011.9A CN112269291A (en) | 2020-11-03 | 2020-11-03 | Electric control type variable focus lens |
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| Publication Number | Publication Date |
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| CN112269291A true CN112269291A (en) | 2021-01-26 |
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| CN202011207011.9A Pending CN112269291A (en) | 2020-11-03 | 2020-11-03 | Electric control type variable focus lens |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101796448A (en) * | 2007-08-28 | 2010-08-04 | 摩托罗拉公司 | Method and apparatus for auto-focus using liquid crystal adaptive optics |
| TW201426143A (en) * | 2012-11-11 | 2014-07-01 | Lensvector Inc | Capacitively coupled electric field control device |
| CN106462017A (en) * | 2014-04-02 | 2017-02-22 | 埃西勒国际通用光学公司 | Achromatic phase modulator and optical device |
| CN109031737A (en) * | 2018-09-06 | 2018-12-18 | 北京航空航天大学 | A kind of fast-response phase delay device based on the double-deck nematic liquid crystal |
| US20200033694A1 (en) * | 2018-07-27 | 2020-01-30 | Boe Technology Group Co., Ltd. | Liquid crystal lens, control method thereof, liquid crystal lens module and display device |
-
2020
- 2020-11-03 CN CN202011207011.9A patent/CN112269291A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101796448A (en) * | 2007-08-28 | 2010-08-04 | 摩托罗拉公司 | Method and apparatus for auto-focus using liquid crystal adaptive optics |
| TW201426143A (en) * | 2012-11-11 | 2014-07-01 | Lensvector Inc | Capacitively coupled electric field control device |
| CN106462017A (en) * | 2014-04-02 | 2017-02-22 | 埃西勒国际通用光学公司 | Achromatic phase modulator and optical device |
| US20200033694A1 (en) * | 2018-07-27 | 2020-01-30 | Boe Technology Group Co., Ltd. | Liquid crystal lens, control method thereof, liquid crystal lens module and display device |
| CN109031737A (en) * | 2018-09-06 | 2018-12-18 | 北京航空航天大学 | A kind of fast-response phase delay device based on the double-deck nematic liquid crystal |
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