JPS5288306A - Automtic optical focusing system - Google Patents
Automtic optical focusing systemInfo
- Publication number
- JPS5288306A JPS5288306A JP197477A JP197477A JPS5288306A JP S5288306 A JPS5288306 A JP S5288306A JP 197477 A JP197477 A JP 197477A JP 197477 A JP197477 A JP 197477A JP S5288306 A JPS5288306 A JP S5288306A
- Authority
- JP
- Japan
- Prior art keywords
- automtic
- focusing system
- optical focusing
- optical
- focusing
- 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.)
- Pending
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
- 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
-
- 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
- G11B7/0917—Focus-error methods other than those covered by G11B7/0909 - G11B7/0916
Landscapes
- Optical Recording Or Reproduction (AREA)
- Automatic Focus Adjustment (AREA)
- Focusing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NLAANVRAGE7600423,A NL178915C (nl) | 1976-01-16 | 1976-01-16 | Automatisch optisch focusseersysteem. |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5288306A true JPS5288306A (en) | 1977-07-23 |
Family
ID=19825458
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP197477A Pending JPS5288306A (en) | 1976-01-16 | 1977-01-13 | Automtic optical focusing system |
JP1985059550U Granted JPS60183920U (ja) | 1976-01-16 | 1985-04-22 | 光学自動集束系 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985059550U Granted JPS60183920U (ja) | 1976-01-16 | 1985-04-22 | 光学自動集束系 |
Country Status (20)
Country | Link |
---|---|
US (1) | US4032776A (e) |
JP (2) | JPS5288306A (e) |
AR (1) | AR211717A1 (e) |
AT (1) | AT351817B (e) |
AU (1) | AU507647B2 (e) |
BE (1) | BE850414A (e) |
BR (1) | BR7700212A (e) |
CA (1) | CA1081511A (e) |
CH (1) | CH610432A5 (e) |
DD (1) | DD129588A5 (e) |
DE (1) | DE2700136C2 (e) |
DK (1) | DK12777A (e) |
ES (1) | ES455011A1 (e) |
FR (1) | FR2338543A1 (e) |
GB (1) | GB1565741A (e) |
IT (1) | IT1076518B (e) |
NL (1) | NL178915C (e) |
NZ (1) | NZ183066A (e) |
SE (1) | SE7700274L (e) |
ZA (1) | ZA767246B (e) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6093122U (ja) * | 1983-11-30 | 1985-06-25 | ソニー株式会社 | 光学ピツクアツプ |
JPS6093123U (ja) * | 1983-11-30 | 1985-06-25 | ソニー株式会社 | 光学ピツクアツプ |
JPS6294422U (e) * | 1985-12-02 | 1987-06-16 |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL176315C (nl) * | 1976-05-12 | 1985-03-18 | Philips Nv | Optische aftastinrichting. |
NL7703232A (nl) * | 1977-03-25 | 1978-09-27 | Philips Nv | Optische aftastinrichting. |
NL7713711A (nl) * | 1977-12-12 | 1979-06-14 | Philips Nv | Optisch uitleeseenheid voor het uitlezen van een bewegende informatiedrager, in het bijzonder voor het uitlezen van een videoplaat. |
JPS54102107A (en) * | 1978-01-30 | 1979-08-11 | Hitachi Ltd | Control information detecting method |
US4302830A (en) * | 1978-05-10 | 1981-11-24 | Olympus Optical Company Ltd. | Optical information reading-out apparatus |
FR2425782B1 (fr) * | 1978-05-10 | 1988-02-12 | Olympus Optical Co | Appareil de lecture d'informations optiques |
US4241423A (en) * | 1978-12-22 | 1980-12-23 | Rca Corporation | Optical memory with injection laser as light source and detector |
US4445209A (en) * | 1979-08-27 | 1984-04-24 | Discovision Associates | Dithered focusing systems |
NL8004380A (nl) * | 1980-07-31 | 1982-03-01 | Philips Nv | Optische inrichting voor het met een stralingsbundel inschrijven en/of uitlezen van registratiesporen. |
JPS57176543A (en) * | 1981-04-20 | 1982-10-29 | Sony Corp | Optical type track scanner |
NL8202451A (nl) * | 1982-06-17 | 1984-01-16 | Philips Nv | Optische inrichting. |
US4499569A (en) * | 1982-09-07 | 1985-02-12 | Discovision Associates | Writing beam focus monitor |
JPS5971141A (ja) * | 1982-10-14 | 1984-04-21 | Mitsubishi Electric Corp | 光学的信号読出し装置 |
DE3346552A1 (de) * | 1982-12-23 | 1984-06-28 | Konishiroku Photo Industry Co., Ltd., Tokio/Tokyo | Kamera |
JPS6020023U (ja) * | 1983-07-15 | 1985-02-12 | アルプス電気株式会社 | 光学式ピツクアツプにおける支持装置 |
JPS6026621U (ja) * | 1983-07-28 | 1985-02-22 | アルプス電気株式会社 | 光学式ヘツド位置制御装置 |
US4607157A (en) * | 1984-02-09 | 1986-08-19 | Xerox Corporation | Automatic focus offset correction system |
US4956833A (en) * | 1986-03-31 | 1990-09-11 | Asahi Kogaku Kogyo Kabushiki Kaisha | Objective driving device for an optical disk apparatus |
US4972397A (en) * | 1988-12-02 | 1990-11-20 | Drexler Technology Corporation | Dithering optical data logger |
JPH03100935A (ja) * | 1989-09-12 | 1991-04-25 | Hitachi Ltd | 光ピツクアツプの防塵装置 |
US5311489A (en) * | 1989-10-13 | 1994-05-10 | Canon Kabushiki Kaisha | Optical head for recording, reproducing, or erasing information having fixed and movable head units |
US5138497A (en) * | 1991-03-15 | 1992-08-11 | Eastman Kodak Company | High speed focusing lens assembly |
US5416756A (en) * | 1991-11-07 | 1995-05-16 | Mitsubishi Denki Kabushiki Kaisha | Lens actuating system with improved frequency response for optical disk drive |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3020414A (en) * | 1960-07-05 | 1962-02-06 | William B Mcknight | Scanning mirror assembly |
US3418478A (en) * | 1966-08-29 | 1968-12-24 | Barnes Eng Co | Horizon sensor using two stationary fields of view separated by a fixed elevation angle which are alternately sampled |
US3642344A (en) * | 1970-11-27 | 1972-02-15 | Honeywell Inc | Optical scanner having high-frequency torsional oscillator |
US3967110A (en) * | 1973-09-21 | 1976-06-29 | Corning Glass Works | Automatic focusing system |
DE2453364C3 (de) * | 1973-11-09 | 1979-02-22 | Hitachi, Ltd., Tokio | Automatische Fokussiervorrichtung |
FR2251876B1 (e) * | 1973-11-16 | 1977-09-23 | Thomson Brandt | |
US3932700A (en) * | 1974-02-04 | 1976-01-13 | Zenith Radio Corporation | Focus tracking registration for optical reproducing systems |
US3946166A (en) * | 1974-04-01 | 1976-03-23 | Zenith Radio Corporation | Tracking arrangement |
DE2458917C3 (de) * | 1974-12-12 | 1981-12-03 | Thomson-Brandt, 75008 Paris | Regelanordnung für die Fokussierung eines Leselichtbündels |
NL174609C (nl) * | 1975-10-15 | 1984-07-02 | Philips Nv | Volgspiegelinrichting in een optische platenspeler. |
-
1976
- 1976-01-16 NL NLAANVRAGE7600423,A patent/NL178915C/xx not_active IP Right Cessation
- 1976-02-23 US US05/660,659 patent/US4032776A/en not_active Expired - Lifetime
- 1976-12-06 ZA ZA00767246A patent/ZA767246B/xx unknown
- 1976-12-15 AR AR265867A patent/AR211717A1/es active
-
1977
- 1977-01-04 DE DE2700136A patent/DE2700136C2/de not_active Expired
- 1977-01-12 CA CA269,546A patent/CA1081511A/en not_active Expired
- 1977-01-13 JP JP197477A patent/JPS5288306A/ja active Pending
- 1977-01-13 GB GB1285/77A patent/GB1565741A/en not_active Expired
- 1977-01-13 AU AU21290/77A patent/AU507647B2/en not_active Expired
- 1977-01-13 BR BR7700212A patent/BR7700212A/pt unknown
- 1977-01-13 AT AT16177A patent/AT351817B/de not_active IP Right Cessation
- 1977-01-13 NZ NZ183066A patent/NZ183066A/xx unknown
- 1977-01-13 DD DD7700196923A patent/DD129588A5/xx unknown
- 1977-01-13 SE SE7700274A patent/SE7700274L/xx unknown
- 1977-01-13 DK DK12777A patent/DK12777A/da unknown
- 1977-01-13 CH CH41177A patent/CH610432A5/xx not_active IP Right Cessation
- 1977-01-13 IT IT19268/77A patent/IT1076518B/it active
- 1977-01-14 BE BE174111A patent/BE850414A/xx unknown
- 1977-01-14 ES ES455011A patent/ES455011A1/es not_active Expired
- 1977-01-14 FR FR7700988A patent/FR2338543A1/fr active Granted
-
1985
- 1985-04-22 JP JP1985059550U patent/JPS60183920U/ja active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6093122U (ja) * | 1983-11-30 | 1985-06-25 | ソニー株式会社 | 光学ピツクアツプ |
JPS6093123U (ja) * | 1983-11-30 | 1985-06-25 | ソニー株式会社 | 光学ピツクアツプ |
JPS6294422U (e) * | 1985-12-02 | 1987-06-16 |
Also Published As
Publication number | Publication date |
---|---|
NL178915C (nl) | 1986-06-02 |
IT1076518B (it) | 1985-04-27 |
JPS60183920U (ja) | 1985-12-06 |
NZ183066A (en) | 1980-02-21 |
DE2700136A1 (de) | 1977-07-21 |
FR2338543B1 (e) | 1980-03-21 |
CA1081511A (en) | 1980-07-15 |
ATA16177A (de) | 1979-01-15 |
DD129588A5 (de) | 1978-01-25 |
BR7700212A (pt) | 1977-09-20 |
NL7600423A (nl) | 1977-07-19 |
AR211717A1 (es) | 1978-02-28 |
US4032776A (en) | 1977-06-28 |
ZA767246B (en) | 1978-07-26 |
ES455011A1 (es) | 1977-12-16 |
JPH0233294Y2 (e) | 1990-09-07 |
AT351817B (de) | 1979-08-10 |
NL178915B (nl) | 1986-01-02 |
AU507647B2 (en) | 1980-02-21 |
DE2700136C2 (de) | 1983-11-17 |
SE7700274L (sv) | 1977-07-17 |
AU2129077A (en) | 1978-07-20 |
BE850414A (fr) | 1977-07-14 |
DK12777A (da) | 1977-07-17 |
GB1565741A (en) | 1980-04-23 |
CH610432A5 (e) | 1979-04-12 |
FR2338543A1 (fr) | 1977-08-12 |
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