JPS6472336A - Optical pickup device - Google Patents

Optical pickup device

Info

Publication number
JPS6472336A
JPS6472336A JP62229990A JP22999087A JPS6472336A JP S6472336 A JPS6472336 A JP S6472336A JP 62229990 A JP62229990 A JP 62229990A JP 22999087 A JP22999087 A JP 22999087A JP S6472336 A JPS6472336 A JP S6472336A
Authority
JP
Japan
Prior art keywords
optical axis
light emitting
emitting point
reproducing characteristic
objective lens
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
Application number
JP62229990A
Other languages
Japanese (ja)
Inventor
Shuichi Ichiura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP62229990A priority Critical patent/JPS6472336A/en
Publication of JPS6472336A publication Critical patent/JPS6472336A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)

Abstract

PURPOSE:To improve a virtual axial outside reproducing characteristic without improving an axial outside reproducing characteristic of a lens itself, by constituting the titled device so that a light emitting point of a light radiating means is selected in response to a shift between an optical axis of the device and an optical axis of an objective lens, and a light beam is made incident vertically on the surface of the objective lens. CONSTITUTION:A semiconductor laser 1 has, for instance, plural light emitting points, and in accordance with a tracking shift, an optimum light emitting point is selected. Therefore, by inputting a tracking error signal to an optical axis shift signal generating circuit 12 and detecting a DC component of the tracking error signal, an optical axis shift signal is generated, and by applying this optical axis shift signal to a light emitting point selecting circuit 13, only an optimum light emitting point is driven selectively. In such a way, even if an axial outside reproducing characteristic of the objective lens itself is not so good, a satisfactory reproducing characteristic can be obtained.
JP62229990A 1987-09-14 1987-09-14 Optical pickup device Pending JPS6472336A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62229990A JPS6472336A (en) 1987-09-14 1987-09-14 Optical pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62229990A JPS6472336A (en) 1987-09-14 1987-09-14 Optical pickup device

Publications (1)

Publication Number Publication Date
JPS6472336A true JPS6472336A (en) 1989-03-17

Family

ID=16900873

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62229990A Pending JPS6472336A (en) 1987-09-14 1987-09-14 Optical pickup device

Country Status (1)

Country Link
JP (1) JPS6472336A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04362537A (en) * 1991-06-07 1992-12-15 Rohm Co Ltd Optical pickup device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5198046A (en) * 1975-02-26 1976-08-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5198046A (en) * 1975-02-26 1976-08-28

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04362537A (en) * 1991-06-07 1992-12-15 Rohm Co Ltd Optical pickup device

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