JPS6123572B2 - - Google Patents

Info

Publication number
JPS6123572B2
JPS6123572B2 JP4845679A JP4845679A JPS6123572B2 JP S6123572 B2 JPS6123572 B2 JP S6123572B2 JP 4845679 A JP4845679 A JP 4845679A JP 4845679 A JP4845679 A JP 4845679A JP S6123572 B2 JPS6123572 B2 JP S6123572B2
Authority
JP
Japan
Prior art keywords
information recording
recording surface
light
prism
photodetector
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.)
Expired
Application number
JP4845679A
Other languages
English (en)
Japanese (ja)
Other versions
JPS55139642A (en
Inventor
Tooru Nakamura
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4845679A priority Critical patent/JPS55139642A/ja
Publication of JPS55139642A publication Critical patent/JPS55139642A/ja
Publication of JPS6123572B2 publication Critical patent/JPS6123572B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Automatic Focus Adjustment (AREA)
JP4845679A 1979-04-18 1979-04-18 Optical information recording and reproducing device Granted JPS55139642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4845679A JPS55139642A (en) 1979-04-18 1979-04-18 Optical information recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4845679A JPS55139642A (en) 1979-04-18 1979-04-18 Optical information recording and reproducing device

Publications (2)

Publication Number Publication Date
JPS55139642A JPS55139642A (en) 1980-10-31
JPS6123572B2 true JPS6123572B2 (ko) 1986-06-06

Family

ID=12803850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4845679A Granted JPS55139642A (en) 1979-04-18 1979-04-18 Optical information recording and reproducing device

Country Status (1)

Country Link
JP (1) JPS55139642A (ko)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57133526A (en) * 1981-02-10 1982-08-18 Sharp Corp Processor of optical information
JPS57181433A (en) * 1981-04-22 1982-11-08 Olympus Optical Co Ltd Tracking system for optical disc reproducer
US4517666A (en) * 1981-06-22 1985-05-14 Tokyo Shibaura Denki Kabushiki Kaisha Optical head
EP0070552B1 (en) * 1981-07-20 1990-06-27 Kabushiki Kaisha Toshiba Optical head
JPS59177542A (ja) * 1983-03-29 1984-10-08 Fuji Photo Film Co Ltd ハロゲン化銀写真印画材料

Also Published As

Publication number Publication date
JPS55139642A (en) 1980-10-31

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