CN110186656A - Laser-projector coupler splitting ratio real-time detection apparatus - Google Patents
Laser-projector coupler splitting ratio real-time detection apparatus Download PDFInfo
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- CN110186656A CN110186656A CN201910588431.7A CN201910588431A CN110186656A CN 110186656 A CN110186656 A CN 110186656A CN 201910588431 A CN201910588431 A CN 201910588431A CN 110186656 A CN110186656 A CN 110186656A
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- light
- modulation
- modulator
- acousto
- optic medium
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
Abstract
Laser-projector coupler splitting ratio real-time detection apparatus, light source is connected by optical fiber with modulator, the AC modulation light of modulator conversion is connected by optical fiber with torch, torch is connected with demodulator, the DC solutions light modulation of demodulator conversion enters in two detectors in parallel, output plughole is arranged in the input jack side of modulator, photoelectric converter is arranged in power supply side, acousto-optic medium is arranged in photoelectric converter side, filter is arranged in acousto-optic medium side, beam splitter is arranged in filter side, prism is arranged in beam splitter side, modulation module is arranged in acousto-optic medium side, modulation module outlet is connected with output plughole.Invention increases the modulation to light source, the modulation light of exchange reaches demodulating end by optical fiber again, it is made to become direct current light again.Since flame light is direct current light, so can be direct current optical isolation, influence in such detector no longer containing flame light, therefore splitting ratio can be preset, and automatically controlled, greatly improved the reliability of efficiency and optical splitter.
Description
Technical field
The present invention relates to laser-projectors to process detection technique field, and in particular to a kind of laser-projector coupler point
Light compares real-time detection apparatus.
Background technique
Laser projection is to transmit frame out using laser beam.Wherein the optical component of laser projection is mainly by red
Turquoise three coloured light valve closes beam X prism, projection lens and driving light valve.There is three color laser of red, green, blue in laser projection.Swash
Light is transmitted to X prism after corresponding optical element and processing the expanding of chip in machine again and integrates three beams of laser, so
The laser after integration is transmitted on projection screen by projection objective again afterwards, entire laser projection is completed and shows process.Laser
The splitting ratio of projector's coupler is an important parameter, and the splitting ratio of present coupler can not all be set and oneself on computers
Dynamic control.And after needing equal flames to exit, measure honourable ratio.Just melt again with this if it is less than desirable value, if it exceeds desirable value
It just scraps, is packed if in required range again.To find out its cause, being entirely that flame light by light pricker is transferred to detector, participate in
Operation and cause.So flames light can only be waited to exit surveys splitting ratio again.
Summary of the invention
The present invention is examined in view of the deficienciess of the prior art, providing a kind of laser-projector with coupler splitting ratio in real time
Survey device.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of laser-projector coupler splitting ratio real-time detection apparatus, by light source, modulator, torch, demodulator and detection
Device composition, light source are connected by optical fiber with modulator, and the AC modulation light of modulator conversion is connected by optical fiber with torch, torch
It is connected with demodulator, the DC solutions light modulation of demodulator conversion enters in two detectors in parallel, the input jack one of modulator
Output plughole is arranged in side, and power supply is installed inside modulator, and photoelectric converter, photoelectric converter side setting sound is arranged in power supply side
Filter is arranged in optical medium, acousto-optic medium side, and beam splitter is arranged in filter side, and prism is arranged in beam splitter side, and acousto-optic is situated between
Matter side be arranged modulation module, modulation module outlet is connected with output plughole, demodulator by successively circuit connection control circuit,
Single-chip microcontroller, photoelectric conversion circuit and Complex Programmable Logic Devices composition.
Apparatus of the present invention increase the modulation to light source, and external light enters inside from input jack, and beam splitter is by light
Line is divided into two parts, and two parts of light enter inside acousto-optic medium after passing through filter and prism respectively, filter
Wave device is filtered the smooth sea in light, a part of light of sound-absorbing material absorption in acousto-optic medium, while internal
Dielectric-slab carries out diffraction and reflection to light, and the light of dielectric-slab is defeated from output plughole by the AC modulation light of modulation module
Out, power supply provides electric power for the operation of equipment, and the modulation light of exchange reaches demodulating end by optical fiber again, it is made to become direct current light again.
Since flame light is direct current light, so can be direct current optical isolation, influence in such detector no longer containing flame light, therefore point
Light ratio can be preset, and automatically controlled, greatly improved the reliability of efficiency and optical splitter.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the structural schematic diagram of apparatus of the present invention；
Fig. 2 is the structural schematic diagram of modulator of the present invention；
Fig. 3 is the structural schematic diagram of demodulator of the present invention.
1 light source, 2 modulators, 3 torches, 4 demodulators, 5 detectors, 6 detectors, 21 input holes, 22 beam splitters, 23 in figure
Prism, 24 filters, 25 acousto-optic mediums, 26 photoelectric converters, 27 power supplys, 28 modulation modules, 29 delivery outlets, 41 control circuits,
42 single-chip microcontrollers, 43 photoelectric conversion circuits, 44 Complex Programmable Logic Devices.
Specific embodiment
As shown in Figure 1, Figure 2 and Figure 3, a kind of laser-projector coupler splitting ratio real-time detection apparatus, by light source 1,
Modulator 2, torch 3, demodulator 4, detector 5 and detector 6 form, and light source 1 is connected by optical fiber with modulator 2, modulator
The AC modulation light of conversion is connected by optical fiber with torch 3, and torch 3 is connected with demodulator 4, the DC solutions light modulation of demodulator conversion
In the detector in parallel into two, output plughole 29 is arranged in 21 side of input jack of modulator, installation electricity inside modulator
Photoelectric converter 26 is arranged in source 27,27 side of power supply, and acousto-optic medium 25 is arranged in 26 side of photoelectric converter, and acousto-optic medium side is set
Filter 24 is set, beam splitter 22 is arranged in filter side, and prism 23, acousto-optic medium side setting modulation mould is arranged in beam splitter side
Block 28, the outlet of modulation module 28 are connected with output plughole 29, and demodulator is by the control circuit 41 of successively circuit connection, single-chip microcontroller
42, photoelectric conversion circuit 43 and Complex Programmable Logic Devices 44 form.
Apparatus of the present invention increase the modulation to light source, and external light enters inside from input jack, and beam splitter is by light
Line is divided into two parts, and two parts of light enter inside acousto-optic medium after passing through filter and prism respectively, and filter is to weak in light
Wave is filtered, and the sound-absorbing material in acousto-optic medium absorbs a part of light, while internal dielectric-slab carries out diffraction to light
And reflection, the light of dielectric-slab are exported by the AC modulation light of modulation module from output plughole, power supply is that the operation of equipment mentions
For electric power, the modulation light of exchange reaches demodulating end by optical fiber again, it is made to become direct current light again.Since flame light is direct current light, institute
With can be direct current optical isolation, influence in such detector no longer containing flame light, therefore splitting ratio can be preset, automatically
Control, greatly improves the reliability of efficiency and optical splitter.
Claims (1)
1. a kind of laser-projector coupler splitting ratio real-time detection apparatus, it is characterized in that by light source, modulator, torch, solution
Device and detector composition are adjusted, light source is connected by optical fiber with modulator, and the AC modulation light of modulator conversion passes through optical fiber and fire
Torch is connected, and torch is connected with demodulator, and the DC solutions light modulation of demodulator conversion enters in two detectors in parallel, modulator
Output plughole is arranged in input jack side, and power supply is installed inside modulator, and photoelectric converter, photoelectric converter is arranged in power supply side
Acousto-optic medium is arranged in side, and filter is arranged in acousto-optic medium side, and beam splitter is arranged in filter side, and rib is arranged in beam splitter side
Modulation module is arranged in mirror, acousto-optic medium side, and modulation module outlet is connected with output plughole, and demodulator is by successively circuit connection
Control circuit, single-chip microcontroller, photoelectric conversion circuit and Complex Programmable Logic Devices composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910588431.7A CN110186656A (en) | 2019-07-02 | 2019-07-02 | Laser-projector coupler splitting ratio real-time detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910588431.7A CN110186656A (en) | 2019-07-02 | 2019-07-02 | Laser-projector coupler splitting ratio real-time detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110186656A true CN110186656A (en) | 2019-08-30 |
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ID=67724640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910588431.7A Pending CN110186656A (en) | 2019-07-02 | 2019-07-02 | Laser-projector coupler splitting ratio real-time detection apparatus |
Country Status (1)
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| CN (1) | CN110186656A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849589A (en) * | 2019-09-29 | 2020-02-28 | 深圳市火乐科技发展有限公司 | Method for detecting optocoupler by using ADC (analog to digital converter), intelligent projector and related product |
Citations (7)
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| CN1034695C (en) * | 1991-06-03 | 1997-04-23 | 住友电器工业株式会社 | Method for fabricating optical fibre couplers |
| CN1338645A (en) * | 2000-08-10 | 2002-03-06 | 台研光电科技股份有限公司 | Efficient production method of optical fiber coupler |
| CN1558210A (en) * | 2004-02-12 | 2004-12-29 | 上海大学 | Coupled type polarization preserving fiber fadeout wave sensor |
| CN101106429A (en) * | 2006-07-11 | 2008-01-16 | 上海科泰信息技术有限公司 | Optical access system for optical modem using high speed synchronization data exchange standard |
| CN201191837Y (en) * | 2008-04-08 | 2009-02-04 | 北京汉潮大成科技孵化器有限公司 | Optical modem |
| CN102096153A (en) * | 2009-12-11 | 2011-06-15 | 北京交通大学 | Manufacturing equipment and method of optical fiber coupler |
| CN208156347U (en) * | 2018-05-25 | 2018-11-27 | 重庆尚茂科技发展有限公司 | Polarization maintaining optical fibre acousto-optic modulator |
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2019
- 2019-07-02 CN CN201910588431.7A patent/CN110186656A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034695C (en) * | 1991-06-03 | 1997-04-23 | 住友电器工业株式会社 | Method for fabricating optical fibre couplers |
| CN1338645A (en) * | 2000-08-10 | 2002-03-06 | 台研光电科技股份有限公司 | Efficient production method of optical fiber coupler |
| CN1558210A (en) * | 2004-02-12 | 2004-12-29 | 上海大学 | Coupled type polarization preserving fiber fadeout wave sensor |
| CN101106429A (en) * | 2006-07-11 | 2008-01-16 | 上海科泰信息技术有限公司 | Optical access system for optical modem using high speed synchronization data exchange standard |
| CN201191837Y (en) * | 2008-04-08 | 2009-02-04 | 北京汉潮大成科技孵化器有限公司 | Optical modem |
| CN102096153A (en) * | 2009-12-11 | 2011-06-15 | 北京交通大学 | Manufacturing equipment and method of optical fiber coupler |
| CN208156347U (en) * | 2018-05-25 | 2018-11-27 | 重庆尚茂科技发展有限公司 | Polarization maintaining optical fibre acousto-optic modulator |
Non-Patent Citations (2)
| Title |
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| 孔婧 等: "一种实现光纤耦合器分光比微调的新方法", 《光学技术》 * |
| 柳春郁 等: "耦合器分光比的精确控制", 《光学技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110849589A (en) * | 2019-09-29 | 2020-02-28 | 深圳市火乐科技发展有限公司 | Method for detecting optocoupler by using ADC (analog to digital converter), intelligent projector and related product |
| CN110849589B (en) * | 2019-09-29 | 2021-02-26 | 深圳市火乐科技发展有限公司 | Method for detecting optocoupler by using ADC (analog to digital converter), intelligent projector and related product |
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Application publication date: 20190830 |
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| RJ01 | Rejection of invention patent application after publication |