DE3677658D1 - Optische kopfvorrichtung. - Google Patents
Optische kopfvorrichtung.Info
- Publication number
- DE3677658D1 DE3677658D1 DE8686110085T DE3677658T DE3677658D1 DE 3677658 D1 DE3677658 D1 DE 3677658D1 DE 8686110085 T DE8686110085 T DE 8686110085T DE 3677658 T DE3677658 T DE 3677658T DE 3677658 D1 DE3677658 D1 DE 3677658D1
- Authority
- DE
- Germany
- Prior art keywords
- optical head
- head device
- optical
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
- G11B7/127—Lasers; Multiple laser arrays
-
- 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
- G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
- G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector
- G11B7/1381—Non-lens elements for altering the properties of the beam, e.g. knife edges, slits, filters or stops
-
- 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
-
- 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
- H01S5/0206—Substrates, e.g. growth, shape, material, removal or bonding
- H01S5/0207—Substrates having a special shape
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60167010A JP2560686B2 (ja) | 1985-07-29 | 1985-07-29 | 光学ヘツド装置 |
JP60167011A JP2600646B2 (ja) | 1985-07-29 | 1985-07-29 | 光学ヘツド装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3677658D1 true DE3677658D1 (de) | 1991-04-04 |
Family
ID=26491184
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8686110085T Expired - Lifetime DE3677658D1 (de) | 1985-07-29 | 1986-07-22 | Optische kopfvorrichtung. |
Country Status (4)
Country | Link |
---|---|
US (2) | US4888760A (de) |
EP (1) | EP0210582B1 (de) |
KR (1) | KR900003000B1 (de) |
DE (1) | DE3677658D1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2508478B2 (ja) * | 1987-02-06 | 1996-06-19 | ソニー株式会社 | 光学ヘツド |
FR2646245B1 (fr) * | 1989-04-25 | 1991-06-14 | Thomson Csf | Dispositif de lecture optique pour support d'enregistrement optique |
JPH05343790A (ja) * | 1992-06-04 | 1993-12-24 | Rohm Co Ltd | 半導体レーザ装置およびその製法 |
JPH06196813A (ja) * | 1992-10-14 | 1994-07-15 | Sony Corp | 半導体レーザとその製法 |
JPH06216163A (ja) * | 1992-12-09 | 1994-08-05 | Eastman Kodak Co | 電荷結合素子 |
US5413695A (en) * | 1993-01-06 | 1995-05-09 | Chevron Research And Technology Company, A Division Of Chevron U.S.A. Inc. | Process for producing lube oil from solvent refined oils by isomerization over a silicoaluminophosphate catalyst |
US5517479A (en) * | 1993-03-26 | 1996-05-14 | Matsushita Electronics Corporation | Optical head including a semiconductor laser having a non-scatter incident area |
JPH0837339A (ja) * | 1994-07-21 | 1996-02-06 | Nec Corp | 反射光防止型半導体レーザダイオード装置 |
US5627851A (en) * | 1995-02-10 | 1997-05-06 | Ricoh Company, Ltd. | Semiconductor light emitting device |
US6967979B2 (en) * | 2000-10-06 | 2005-11-22 | Sharp Kabushiki Kaisha | Semiconductor laser device, optical pickup and fabrication method of semiconductor laser device |
DE10330945A1 (de) * | 2003-07-08 | 2005-02-03 | Deutsche Thomson-Brandt Gmbh | Optischer Abtaster mit Mikrooptik zur Strahlkombination |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3855546A (en) * | 1973-09-21 | 1974-12-17 | Texas Instruments Inc | Folded lobe large optical cavity laser diode |
JPS55148482A (en) * | 1979-05-08 | 1980-11-19 | Canon Inc | Semiconductor laser device |
US4333173A (en) * | 1979-06-15 | 1982-06-01 | Hitachi, Ltd. | Optical information processor with prismatic correction of laser beam shape |
JPS5749287A (en) * | 1980-09-09 | 1982-03-23 | Matsushita Electric Ind Co Ltd | Stem of semiconductor laser |
FI64999C (fi) * | 1980-09-22 | 1984-02-10 | Instrumentarium Oy | Spaltkollimator foer panoramaroentgenavbildningsanordning |
JPS5756984A (en) * | 1980-09-23 | 1982-04-05 | Mitsubishi Electric Corp | Assembling method for semiconductor light emitting device |
JPS5870592A (ja) * | 1981-10-23 | 1983-04-27 | Hitachi Ltd | レ−ザ−ダイオ−ド |
JPS5877273A (ja) * | 1981-11-02 | 1983-05-10 | Hitachi Ltd | レ−ザ−ダイオ−ド |
JPS58207689A (ja) * | 1982-05-28 | 1983-12-03 | Hitachi Ltd | 半導体レ−ザ装置 |
US4520472A (en) * | 1983-02-07 | 1985-05-28 | Rca Corporation | Beam expansion and relay optics for laser diode array |
JPS60103316A (ja) * | 1983-11-11 | 1985-06-07 | Hitachi Ltd | 光モ−ドフイルタ |
JPS611077A (ja) * | 1984-06-13 | 1986-01-07 | Matsushita Electric Ind Co Ltd | 半導体レ−ザ装置 |
US4742506A (en) * | 1984-07-12 | 1988-05-03 | Sony Corporation | Tracking error detecting apparatus for an optical head with skew error reduction by using an inclined header portion |
JPS61134097A (ja) * | 1984-11-30 | 1986-06-21 | インタ−ナショナル ビジネス マシ−ンズ コ−ポレ−ション | 半導体レ−ザ−の製造方法 |
GB8514051D0 (en) * | 1985-06-04 | 1985-07-10 | British Telecomm | Opto-electronic devices |
-
1986
- 1986-07-22 EP EP86110085A patent/EP0210582B1/de not_active Expired - Lifetime
- 1986-07-22 DE DE8686110085T patent/DE3677658D1/de not_active Expired - Lifetime
- 1986-07-23 KR KR8605982A patent/KR900003000B1/ko not_active IP Right Cessation
-
1988
- 1988-02-12 US US07/159,412 patent/US4888760A/en not_active Expired - Lifetime
-
1989
- 1989-04-21 US US07/341,649 patent/US4987566A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US4888760A (en) | 1989-12-19 |
US4987566A (en) | 1991-01-22 |
EP0210582A2 (de) | 1987-02-04 |
EP0210582B1 (de) | 1991-02-27 |
EP0210582A3 (en) | 1988-12-21 |
KR870001559A (ko) | 1987-03-14 |
KR900003000B1 (en) | 1990-05-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |