JPS6427043A - Optical pickup device - Google Patents
Optical pickup deviceInfo
- Publication number
- JPS6427043A JPS6427043A JP62185272A JP18527287A JPS6427043A JP S6427043 A JPS6427043 A JP S6427043A JP 62185272 A JP62185272 A JP 62185272A JP 18527287 A JP18527287 A JP 18527287A JP S6427043 A JPS6427043 A JP S6427043A
- Authority
- JP
- Japan
- Prior art keywords
- aberration
- lens
- diode
- luminous flux
- weight
- 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 Head (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Holo Graphy (AREA)
Abstract
PURPOSE:To minimize optical lens aberration such as spherical aberration, etc., and to execute miniaturization and lightening in weight by using a hologram lens having an aspherical lens function and executing convergence irradiation onto a storage medium. CONSTITUTION:Luminous flux emitted from a laser diode 40 is made into parallel beams by a hologram lens 41 and the astigmatic difference in the diode 40 is removed. The parallel beams are converged by a hologram lens 42, the optical lens aberration such as spherical aberration, etc., are removed, the beam pass through a window glass 43 and irradiate a medium sensing material surface 45 in a spot-shape, and information is recorded and reproduced. The rear surface emitting luminous flux of the diode 40 is light-received by a photodetector 46 for monitoring and the control of a light output is executed. Thus, the aberration of an optical system is minimized and the device can be miniaturized and lightened in weight.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62185272A JPS6427043A (en) | 1987-07-23 | 1987-07-23 | Optical pickup device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62185272A JPS6427043A (en) | 1987-07-23 | 1987-07-23 | Optical pickup device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6427043A true JPS6427043A (en) | 1989-01-30 |
Family
ID=16167923
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62185272A Pending JPS6427043A (en) | 1987-07-23 | 1987-07-23 | Optical pickup device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6427043A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2725547A1 (en) * | 1994-10-06 | 1996-04-12 | Matsushita Electric Ind Co Ltd | Optical head for recording and reproduction of optical disc data |
JPH0917011A (en) * | 1995-06-26 | 1997-01-17 | Samsung Electron Co Ltd | Double-focus optical pickup |
US5721629A (en) * | 1995-06-26 | 1998-02-24 | Samsung Electronics Co., Ltd. | Dual-focus forming method and apparatus thereof |
WO2008018124A1 (en) * | 2006-08-09 | 2008-02-14 | Fujitsu Limited | Hologram recording device |
-
1987
- 1987-07-23 JP JP62185272A patent/JPS6427043A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2725547A1 (en) * | 1994-10-06 | 1996-04-12 | Matsushita Electric Ind Co Ltd | Optical head for recording and reproduction of optical disc data |
NL1001343C2 (en) * | 1994-10-06 | 1998-07-15 | Matsushita Electric Ind Co Ltd | Optical pick-up and method of production. |
US5978344A (en) * | 1994-10-06 | 1999-11-02 | Matsushita Electric Industrial Co., Ltd. | Method of manufacturing integrated optical pick-up |
JPH0917011A (en) * | 1995-06-26 | 1997-01-17 | Samsung Electron Co Ltd | Double-focus optical pickup |
US5721629A (en) * | 1995-06-26 | 1998-02-24 | Samsung Electronics Co., Ltd. | Dual-focus forming method and apparatus thereof |
US5737295A (en) * | 1995-06-26 | 1998-04-07 | Samsung Electronics Co., Ltd. | Dual-focus optical pickup for different thicknesses of recording medium |
WO2008018124A1 (en) * | 2006-08-09 | 2008-02-14 | Fujitsu Limited | Hologram recording device |
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