JPS5661045A - Optical information reader - Google Patents

Optical information reader

Info

Publication number
JPS5661045A
JPS5661045A JP13699779A JP13699779A JPS5661045A JP S5661045 A JPS5661045 A JP S5661045A JP 13699779 A JP13699779 A JP 13699779A JP 13699779 A JP13699779 A JP 13699779A JP S5661045 A JPS5661045 A JP S5661045A
Authority
JP
Japan
Prior art keywords
prism
disc
light
polarized
detection
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
JP13699779A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0120498B2 (enrdf_load_stackoverflow
Inventor
Kiichi Kato
Kenichi Ito
Toru Musha
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.)
Olympus Corp
Original Assignee
Olympus Optical 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=15188368&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPS5661045(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP13699779A priority Critical patent/JPS5661045A/ja
Publication of JPS5661045A publication Critical patent/JPS5661045A/ja
Publication of JPH0120498B2 publication Critical patent/JPH0120498B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP13699779A 1979-10-25 1979-10-25 Optical information reader Granted JPS5661045A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13699779A JPS5661045A (en) 1979-10-25 1979-10-25 Optical information reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13699779A JPS5661045A (en) 1979-10-25 1979-10-25 Optical information reader

Publications (2)

Publication Number Publication Date
JPS5661045A true JPS5661045A (en) 1981-05-26
JPH0120498B2 JPH0120498B2 (enrdf_load_stackoverflow) 1989-04-17

Family

ID=15188368

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13699779A Granted JPS5661045A (en) 1979-10-25 1979-10-25 Optical information reader

Country Status (1)

Country Link
JP (1) JPS5661045A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050967A1 (en) * 1980-10-25 1982-05-05 Olympus Optical Co., Ltd. Signal detection system for use in an optically operating reproducing apparatus
US5128919A (en) * 1987-11-16 1992-07-07 Sony Corporation Apparatus for reproducing an optically recorded information

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54125005A (en) * 1978-03-23 1979-09-28 Olympus Optical Co Ltd Optical reading method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54125005A (en) * 1978-03-23 1979-09-28 Olympus Optical Co Ltd Optical reading method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050967A1 (en) * 1980-10-25 1982-05-05 Olympus Optical Co., Ltd. Signal detection system for use in an optically operating reproducing apparatus
US5128919A (en) * 1987-11-16 1992-07-07 Sony Corporation Apparatus for reproducing an optically recorded information

Also Published As

Publication number Publication date
JPH0120498B2 (enrdf_load_stackoverflow) 1989-04-17

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees