JPS52119304A - Optical device - Google Patents

Optical device

Info

Publication number
JPS52119304A
JPS52119304A JP3573676A JP3573676A JPS52119304A JP S52119304 A JPS52119304 A JP S52119304A JP 3573676 A JP3573676 A JP 3573676A JP 3573676 A JP3573676 A JP 3573676A JP S52119304 A JPS52119304 A JP S52119304A
Authority
JP
Japan
Prior art keywords
optical device
light
recording
distribution
detecting
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.)
Granted
Application number
JP3573676A
Other languages
Japanese (ja)
Other versions
JPS623490B2 (en
Inventor
Kiyonobu Endo
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP3573676A priority Critical patent/JPS52119304A/en
Publication of JPS52119304A publication Critical patent/JPS52119304A/en
Publication of JPS623490B2 publication Critical patent/JPS623490B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To control the distribution of light patterns by detecting the shape and light quantity of a light beam in recording of video discs using light beams.
COPYRIGHT: (C)1977,JPO&Japio
JP3573676A 1976-03-31 1976-03-31 Optical device Granted JPS52119304A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3573676A JPS52119304A (en) 1976-03-31 1976-03-31 Optical device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3573676A JPS52119304A (en) 1976-03-31 1976-03-31 Optical device

Publications (2)

Publication Number Publication Date
JPS52119304A true JPS52119304A (en) 1977-10-06
JPS623490B2 JPS623490B2 (en) 1987-01-26

Family

ID=12450102

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3573676A Granted JPS52119304A (en) 1976-03-31 1976-03-31 Optical device

Country Status (1)

Country Link
JP (1) JPS52119304A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61192038A (en) * 1985-02-20 1986-08-26 Matsushita Electric Ind Co Ltd Optical information recorder
JPH05225584A (en) * 1982-09-07 1993-09-03 Discovision Assoc Apparatus for display of beam-spot shape

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05225584A (en) * 1982-09-07 1993-09-03 Discovision Assoc Apparatus for display of beam-spot shape
JP2580390B2 (en) * 1982-09-07 1997-02-12 ディスコビジョン アソシエイツ Optical disc master creation device
JPS61192038A (en) * 1985-02-20 1986-08-26 Matsushita Electric Ind Co Ltd Optical information recorder

Also Published As

Publication number Publication date
JPS623490B2 (en) 1987-01-26

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