TW486846B - Device and method for providing optical feedback for an optical emitter using holograms - Google Patents
Device and method for providing optical feedback for an optical emitter using holograms Download PDFInfo
- Publication number
- TW486846B TW486846B TW086110098A TW86110098A TW486846B TW 486846 B TW486846 B TW 486846B TW 086110098 A TW086110098 A TW 086110098A TW 86110098 A TW86110098 A TW 86110098A TW 486846 B TW486846 B TW 486846B
- Authority
- TW
- Taiwan
- Prior art keywords
- light
- optical
- light beam
- feedback
- sensing unit
- Prior art date
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005538 encapsulation Methods 0.000 claims description 12
- 230000002079 cooperative effect Effects 0.000 claims description 3
- 230000008713 feedback mechanism Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10851—Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
- G01J1/28—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source
- G01J1/30—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source using electric radiation detectors
- G01J1/32—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using variation of intensity or distance of source using electric radiation detectors adapted for automatic variation of the measured or reference value
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/10831—Arrangement of optical elements, e.g. lenses, mirrors, prisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
- H01S5/18—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities
- H01S5/183—Surface-emitting [SE] lasers, e.g. having both horizontal and vertical cavities having only vertical cavities, e.g. vertical cavity surface-emitting lasers [VCSEL]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K2207/00—Other aspects
- G06K2207/1015—Hologram
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K2207/00—Other aspects
- G06K2207/1018—Source control
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/02208—Mountings; Housings characterised by the shape of the housings
- H01S5/02212—Can-type, e.g. TO-CAN housings with emission along or parallel to symmetry axis
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/0225—Out-coupling of light
- H01S5/02257—Out-coupling of light using windows, e.g. specially adapted for back-reflecting light to a detector inside the housing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/026—Monolithically integrated components, e.g. waveguides, monitoring photo-detectors, drivers
- H01S5/0262—Photo-diodes, e.g. transceiver devices, bidirectional devices
- H01S5/0264—Photo-diodes, e.g. transceiver devices, bidirectional devices for monitoring the laser-output
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
- H01S5/068—Stabilisation of laser output parameters
- H01S5/0683—Stabilisation of laser output parameters by monitoring the optical output parameters
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Optics & Photonics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Semiconductor Lasers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US68297396A | 1996-07-16 | 1996-07-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW486846B true TW486846B (en) | 2002-05-11 |
Family
ID=24742024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW086110098A TW486846B (en) | 1996-07-16 | 1997-07-17 | Device and method for providing optical feedback for an optical emitter using holograms |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0859947A4 (fr) |
| JP (1) | JPH11513198A (fr) |
| KR (1) | KR19990044693A (fr) |
| CN (1) | CN1197510A (fr) |
| CA (1) | CA2230811A1 (fr) |
| TW (1) | TW486846B (fr) |
| WO (1) | WO1998002719A1 (fr) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6314223B1 (en) * | 1998-08-31 | 2001-11-06 | Digital Optics Corporation | Diffractive vertical cavity surface emitting laser power monitor and system |
| GB0000209D0 (en) * | 2000-01-07 | 2000-03-01 | Holmetrica Limited | Holographic multiplexed image sensor |
| US6526076B2 (en) * | 2000-12-15 | 2003-02-25 | Agilent Technologies, Inc. | Integrated parallel channel optical monitoring for parallel optics transmitter |
| JP4915310B2 (ja) * | 2007-08-06 | 2012-04-11 | 株式会社デンソーウェーブ | 光学的情報読取装置 |
| WO2010097751A2 (fr) | 2009-02-25 | 2010-09-02 | Philips Intellectual Property & Standards Gmbh | Stabilisation de puissance de sortie pour diodes laser au moyen de la tension laser dépendant du refroidissement photonique |
| CN102646925B (zh) * | 2012-04-25 | 2016-02-24 | 青岛镭创光电技术有限公司 | 带光反馈激光模组结构 |
| US11769984B2 (en) | 2021-07-30 | 2023-09-26 | Panasonic Holdings Corporation | Laser module, laser oscillator and laser processing system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3949233A (en) * | 1974-08-15 | 1976-04-06 | Pitney-Bowes, Inc. | Hand held bar code reader with constant linear amplifier output |
| JPS6086887A (ja) * | 1983-10-19 | 1985-05-16 | Matsushita Electric Ind Co Ltd | 半導体レ−ザ装置 |
| US5122644A (en) * | 1988-11-17 | 1992-06-16 | Alps Electric Co., Ltd. | Optical code reading device with autofocussing |
| US5475210A (en) * | 1991-09-09 | 1995-12-12 | Kabushiki Kaisha Toshiba | Noise reduction system for optical record and reproduction apparatus using auto-power controlled semiconductor laser device |
| EP0605929B1 (fr) * | 1993-01-04 | 1998-07-29 | Koninklijke Philips Electronics N.V. | Dispositif pour balayer optiquement une surface |
| US5612529A (en) * | 1994-10-31 | 1997-03-18 | Psc Inc. | System for bar code reading and scanning with automatic gain control |
| KR100269710B1 (ko) * | 1996-01-23 | 2000-10-16 | 윤종용 | 광출력장치 및 이를 채용한 광픽업장치 |
-
1997
- 1997-07-11 EP EP97934097A patent/EP0859947A4/fr not_active Withdrawn
- 1997-07-11 CN CN97190901A patent/CN1197510A/zh active Pending
- 1997-07-11 CA CA002230811A patent/CA2230811A1/fr not_active Abandoned
- 1997-07-11 WO PCT/US1997/012023 patent/WO1998002719A1/fr not_active Application Discontinuation
- 1997-07-11 KR KR1019980701950A patent/KR19990044693A/ko not_active Application Discontinuation
- 1997-07-11 JP JP10506144A patent/JPH11513198A/ja active Pending
- 1997-07-17 TW TW086110098A patent/TW486846B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| EP0859947A1 (fr) | 1998-08-26 |
| EP0859947A4 (fr) | 2000-04-05 |
| CN1197510A (zh) | 1998-10-28 |
| WO1998002719A1 (fr) | 1998-01-22 |
| JPH11513198A (ja) | 1999-11-09 |
| KR19990044693A (ko) | 1999-06-25 |
| CA2230811A1 (fr) | 1998-01-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GD4A | Issue of patent certificate for granted invention patent |