JPS542704A - Optical information reproducer - Google Patents

Optical information reproducer

Info

Publication number
JPS542704A
JPS542704A JP6823477A JP6823477A JPS542704A JP S542704 A JPS542704 A JP S542704A JP 6823477 A JP6823477 A JP 6823477A JP 6823477 A JP6823477 A JP 6823477A JP S542704 A JPS542704 A JP S542704A
Authority
JP
Japan
Prior art keywords
optical information
information reproducer
detecting
reproducer
simplify
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
JP6823477A
Other languages
Japanese (ja)
Inventor
Mitsushige Kondo
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6823477A priority Critical patent/JPS542704A/en
Publication of JPS542704A publication Critical patent/JPS542704A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To simplify reproducing optical system by performing detecting of information and detecting of focal position errors of a condensing lens by a one luminous flux in an optical video disc.
COPYRIGHT: (C)1979,JPO&Japio
JP6823477A 1977-06-08 1977-06-08 Optical information reproducer Pending JPS542704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6823477A JPS542704A (en) 1977-06-08 1977-06-08 Optical information reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6823477A JPS542704A (en) 1977-06-08 1977-06-08 Optical information reproducer

Publications (1)

Publication Number Publication Date
JPS542704A true JPS542704A (en) 1979-01-10

Family

ID=13367886

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6823477A Pending JPS542704A (en) 1977-06-08 1977-06-08 Optical information reproducer

Country Status (1)

Country Link
JP (1) JPS542704A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS594030A (en) * 1982-06-16 1984-01-10 ゼネラル・シグナル・コ−ポレ−シヨン Method and device for slicing semiconductor ingot
US4579454A (en) * 1983-03-14 1986-04-01 Rca Corporation Optical profilometer for steep surface contours with significant surface tilt
JPH0278025A (en) * 1988-09-14 1990-03-19 Copal Co Ltd Optical pickup device
US5083869A (en) * 1988-07-27 1992-01-28 Hitachi, Ltd. Photocoustic signal detecting device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS594030A (en) * 1982-06-16 1984-01-10 ゼネラル・シグナル・コ−ポレ−シヨン Method and device for slicing semiconductor ingot
US4579454A (en) * 1983-03-14 1986-04-01 Rca Corporation Optical profilometer for steep surface contours with significant surface tilt
US5083869A (en) * 1988-07-27 1992-01-28 Hitachi, Ltd. Photocoustic signal detecting device
JPH0278025A (en) * 1988-09-14 1990-03-19 Copal Co Ltd Optical pickup device

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