ATE30799T1 - Geraet zur fokusfehlerdetektion. - Google Patents
Geraet zur fokusfehlerdetektion.Info
- Publication number
- ATE30799T1 ATE30799T1 AT84303523T AT84303523T ATE30799T1 AT E30799 T1 ATE30799 T1 AT E30799T1 AT 84303523 T AT84303523 T AT 84303523T AT 84303523 T AT84303523 T AT 84303523T AT E30799 T1 ATE30799 T1 AT E30799T1
- Authority
- AT
- Austria
- Prior art keywords
- lens
- photo
- light
- detector
- interface
- Prior art date
Links
- 238000001514 detection method Methods 0.000 title 1
- 239000002131 composite material Substances 0.000 abstract 3
- 230000003287 optical effect Effects 0.000 abstract 3
- 239000011521 glass Substances 0.000 abstract 2
- 229920003023 plastic Polymers 0.000 abstract 2
- 239000004033 plastic Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0908—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only
- G11B7/0912—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for focusing only by push-pull method
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/30—Systems for automatic generation of focusing signals using parallactic triangle with a base line
- G02B7/32—Systems for automatic generation of focusing signals using parallactic triangle with a base line using active means, e.g. light emitter
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Automatic Focus Adjustment (AREA)
- Optical Recording Or Reproduction (AREA)
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Head (AREA)
- Eye Examination Apparatus (AREA)
- Body Structure For Vehicles (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58096058A JPS59221835A (ja) | 1983-05-31 | 1983-05-31 | フオ−カス誤差検出装置 |
EP84303523A EP0127448B1 (de) | 1983-05-31 | 1984-05-24 | Gerät zur Fokusfehlerdetektion |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE30799T1 true ATE30799T1 (de) | 1987-11-15 |
Family
ID=14154835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT84303523T ATE30799T1 (de) | 1983-05-31 | 1984-05-24 | Geraet zur fokusfehlerdetektion. |
Country Status (7)
Country | Link |
---|---|
US (1) | US4631397A (de) |
EP (1) | EP0127448B1 (de) |
JP (1) | JPS59221835A (de) |
KR (1) | KR920001112B1 (de) |
AT (1) | ATE30799T1 (de) |
CA (1) | CA1248796A (de) |
DE (1) | DE3467447D1 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62132242A (ja) * | 1985-12-04 | 1987-06-15 | Hitachi Ltd | 光デイスク装置 |
US4853923A (en) * | 1985-12-12 | 1989-08-01 | Nikon Corporation | Maneto-optical recording apparatus with path length compensated dual photo-electric conversion |
US5231621A (en) * | 1986-09-05 | 1993-07-27 | Canon Kabushiki Kaisha | Focus detector which serves to split off a portion of a detected light beam only when the detected light beam is not refocused at an expected refocus point |
NL8603108A (nl) * | 1986-12-08 | 1988-07-01 | Philips Nv | Mikroskoop. |
DE3786541T2 (de) * | 1986-12-25 | 1993-11-25 | Nippon Electric Co | Verfahren und Gerät zur Erfassung von Ausrichtungs- und Fokusfehlern in einem optischen Kopf. |
JP2596545B2 (ja) * | 1987-01-07 | 1997-04-02 | パイオニア株式会社 | 焦点誤差検出装置及びこれに用いられる光検出器の受光領域幅の選定方法 |
US4891799A (en) * | 1987-03-13 | 1990-01-02 | Fuji Electrochemical Co., Ltd. | Optical head apparatus for writing and reading data on an optical disk having a lens with an inclined optical axis |
US5099109A (en) * | 1987-08-05 | 1992-03-24 | Alps Electric Co., Ltd. | Optical reader with reduced regular reflection errors |
JPH0361811A (ja) * | 1989-07-31 | 1991-03-18 | Canon Inc | 測距装置 |
CA2115859C (en) * | 1994-02-23 | 1995-12-26 | Brian Dewan | Method and apparatus for optimizing sub-pixel resolution in a triangulation based distance measuring device |
US5566151A (en) * | 1995-06-07 | 1996-10-15 | International Business Machines Corporation | Optical devices having array detectors with light receiving photo arrays larger than an incident laser beam cross-section |
US6259668B1 (en) * | 1996-02-14 | 2001-07-10 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses |
US6222812B1 (en) | 1996-08-29 | 2001-04-24 | Samsung Electronics Co., Ltd. | Optical pickup using an optical phase plate |
US6639889B1 (en) | 1997-02-13 | 2003-10-28 | Samsung Electronics Co., Ltd. | Recording/reproducing apparatus including an optical pickup having an objective lens compatible with a plurality of optical disk formats |
US6304540B1 (en) | 1998-03-30 | 2001-10-16 | Samsung Electronics Co., Ltd. | Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens |
US6563779B1 (en) | 1999-06-16 | 2003-05-13 | Siros Technologies, Inc. | Tracking error signal generation using confocally filtered detection |
US6624403B2 (en) * | 2001-10-11 | 2003-09-23 | Therma-Wave, Inc. | Autofocus system |
KR20030093683A (ko) * | 2002-06-05 | 2003-12-11 | 삼성전자주식회사 | 호환형 광픽업 |
JP2004226948A (ja) * | 2002-11-29 | 2004-08-12 | Olympus Corp | 光学機器の照明装置 |
JP4557281B2 (ja) * | 2004-02-16 | 2010-10-06 | 株式会社リコー | 光ピックアップ装置及び光ディスク装置 |
JP4133884B2 (ja) * | 2004-03-18 | 2008-08-13 | 株式会社ミツトヨ | 光学的変位測定器 |
JP4212522B2 (ja) * | 2004-07-06 | 2009-01-21 | 太陽誘電株式会社 | ピックアップ装置 |
CN103608702A (zh) * | 2011-06-09 | 2014-02-26 | 元晖光电有限公司 | 小面化折叠型光学瞄准仪 |
US20150340396A1 (en) * | 2014-05-24 | 2015-11-26 | Vladislav Blayvas | Image sensor with dispersive color separation |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2311326A2 (fr) * | 1974-01-15 | 1976-12-10 | Thomson Brandt | Dispositif de focalisation et lecteur optique comportant un tel dispositif |
NL7413044A (nl) * | 1974-10-03 | 1976-04-06 | Philips Nv | Registratiedrager waarop een televisiesignaal is opgeslagen. |
GB1532345A (en) * | 1976-06-25 | 1978-11-15 | Hitachi Ltd | Information play-back apparatus |
JPS5690434A (en) * | 1979-12-19 | 1981-07-22 | Hitachi Ltd | Optical information reproducing device |
US4376303A (en) * | 1980-12-19 | 1983-03-08 | Rca Corporation | Quasi-zoom lens optical focus sensor |
FR2498752B1 (fr) * | 1981-01-23 | 1985-07-05 | Thomson Csf | Dispositif optique d'enregistrement lecture d'un support d'information comportant deux sources laser de longueurs d'ondes differentes |
JPS57195634U (de) * | 1981-06-05 | 1982-12-11 | ||
JPS5897140A (ja) * | 1981-12-04 | 1983-06-09 | Victor Co Of Japan Ltd | 光学的情報信号再生装置 |
JPS59147306A (ja) * | 1983-02-10 | 1984-08-23 | Sony Corp | フオ−カス誤差検出装置 |
-
1983
- 1983-05-31 JP JP58096058A patent/JPS59221835A/ja active Pending
-
1984
- 1984-05-24 EP EP84303523A patent/EP0127448B1/de not_active Expired
- 1984-05-24 CA CA000455020A patent/CA1248796A/en not_active Expired
- 1984-05-24 AT AT84303523T patent/ATE30799T1/de not_active IP Right Cessation
- 1984-05-24 KR KR1019840002844A patent/KR920001112B1/ko not_active IP Right Cessation
- 1984-05-24 DE DE8484303523T patent/DE3467447D1/de not_active Expired
- 1984-05-29 US US06/614,995 patent/US4631397A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US4631397A (en) | 1986-12-23 |
JPS59221835A (ja) | 1984-12-13 |
EP0127448A1 (de) | 1984-12-05 |
EP0127448B1 (de) | 1987-11-11 |
KR920001112B1 (ko) | 1992-02-01 |
KR850000078A (ko) | 1985-02-25 |
DE3467447D1 (en) | 1987-12-17 |
CA1248796A (en) | 1989-01-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ATE30799T1 (de) | Geraet zur fokusfehlerdetektion. | |
JPS5753832A (en) | Method and device for recording of optical information | |
SE9000210D0 (sv) | Solstraalningsanordning foer illuminering | |
KR910021571A (ko) | 코팅 두께 측정 방법 및 장치 | |
JPS5689005A (en) | Position detector | |
JPS59124308A (ja) | 光導体の受光端をレンズの焦点位置に合わせるための構造及びそのための器具 | |
JPS5611439A (en) | Focus detector of camera | |
JPS5767815A (en) | Measuring method for position of reflector using light | |
JPS5690227A (en) | Optical fiber temperature detector | |
DE59607835D1 (de) | Konusoptik zur fokussierung von strahlung und verwendung derselben für optische bewegungsmelder | |
AU8030891A (en) | Temperature measuring device | |
JPS5669606A (en) | Focus detector | |
JPH01143908A (ja) | 薄膜厚測定器 | |
JPS5611629A (en) | Focus detector for optical information reproducing unit | |
JPS5544926A (en) | Article surface fault detector | |
JPS57136117A (en) | Conversion detector for physical quantity-light attenuation level | |
JPS57142604A (en) | Luminescence spot scanner | |
JPS57186854A (en) | Optical transmitting device | |
JPS57189106A (en) | Focus detector | |
JPS56111403A (en) | Sensor for parallel luminous flux photodetection | |
DK0537024T3 (da) | Apparat til detektering af infrarød stråling | |
JPS5468203A (en) | Detecting system of light reflecting face positions | |
JPS6489040A (en) | Focus controller | |
Kearney | Optoelectronic weld evaluation system | |
JPS57127933A (en) | Pickup device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
UEP | Publication of translation of european patent specification | ||
REN | Ceased due to non-payment of the annual fee |