JPS6410425A - Optical information recording and reproducing device - Google Patents
Optical information recording and reproducing deviceInfo
- Publication number
- JPS6410425A JPS6410425A JP16470087A JP16470087A JPS6410425A JP S6410425 A JPS6410425 A JP S6410425A JP 16470087 A JP16470087 A JP 16470087A JP 16470087 A JP16470087 A JP 16470087A JP S6410425 A JPS6410425 A JP S6410425A
- Authority
- JP
- Japan
- Prior art keywords
- laser
- grating
- frequency
- light
- frequency filter
- 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
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
PURPOSE:To contrive the attainment of high speed access and small size and light weight for an entire device by providing an external resonator type laser oscillated at an optional frequency in a laser gain band, a frequency filter whose transmission frequency is variable and a grating transmitting through an oscillation output light. CONSTITUTION:An optical deflector 13 provided with an optical deflection function in the tracking direction is arranged as a laser beam source radiating a light from a laser to an information recording medium 7 to apply recording or reproduction of the information. The optical deflector 13 utilizes the wavelength dependency of a diffracted angle of the grating (diffraction grating), the semiconductor laser 14 is connected to a power source 15 and arranged between mirrors 17, 18 being components of an external resonator 16 and a frequency filter 19 is provided between the semiconductor laser 14 and the mirror 18. When a tracking deviation takes place, the tracking control is applied so that the track is traced by the correction by the electrooptic deflection scanning so that the transmission frequency of the frequency filter 19 is subjected to variable control, thereby deflecting the transmitted light of the grating 20.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16470087A JPS6410425A (en) | 1987-07-01 | 1987-07-01 | Optical information recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16470087A JPS6410425A (en) | 1987-07-01 | 1987-07-01 | Optical information recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6410425A true JPS6410425A (en) | 1989-01-13 |
Family
ID=15798211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16470087A Pending JPS6410425A (en) | 1987-07-01 | 1987-07-01 | Optical information recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6410425A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008201274A (en) * | 2007-02-20 | 2008-09-04 | Toyota Motor Corp | Braking force control device, brake pedal operational mode estimating device and brake pedal device |
US8567329B2 (en) | 2009-06-12 | 2013-10-29 | Brother Kogyo Kabushiki Kaisha | Sewing apparatus and computer-readable medium storing program for sewing apparatus |
US12009379B2 (en) | 2017-05-01 | 2024-06-11 | Visera Technologies Company Limited | Image sensor |
-
1987
- 1987-07-01 JP JP16470087A patent/JPS6410425A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008201274A (en) * | 2007-02-20 | 2008-09-04 | Toyota Motor Corp | Braking force control device, brake pedal operational mode estimating device and brake pedal device |
US8567329B2 (en) | 2009-06-12 | 2013-10-29 | Brother Kogyo Kabushiki Kaisha | Sewing apparatus and computer-readable medium storing program for sewing apparatus |
US12009379B2 (en) | 2017-05-01 | 2024-06-11 | Visera Technologies Company Limited | Image sensor |
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