JPS52119907A - Light beam branching device in video disc reproducers - Google Patents

Light beam branching device in video disc reproducers

Info

Publication number
JPS52119907A
JPS52119907A JP3519776A JP3519776A JPS52119907A JP S52119907 A JPS52119907 A JP S52119907A JP 3519776 A JP3519776 A JP 3519776A JP 3519776 A JP3519776 A JP 3519776A JP S52119907 A JPS52119907 A JP S52119907A
Authority
JP
Japan
Prior art keywords
reproducers
light beam
video disc
branching device
beam branching
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
JP3519776A
Other languages
Japanese (ja)
Other versions
JPS5827890B2 (en
Inventor
Koji Kamisaka
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP51035197A priority Critical patent/JPS5827890B2/en
Publication of JPS52119907A publication Critical patent/JPS52119907A/en
Publication of JPS5827890B2 publication Critical patent/JPS5827890B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Optical Head (AREA)

Abstract

PURPOSE:To obtain a focus adjsuting beam parallel to signal-reading light beams and simplify constitution by disposing a light transmission plate formed with reflection type diffraction grating on the side opposite to the incident side in the optical path of light.
JP51035197A 1976-04-01 1976-04-01 Optical beam branching device in video disc playback device Expired JPS5827890B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP51035197A JPS5827890B2 (en) 1976-04-01 1976-04-01 Optical beam branching device in video disc playback device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51035197A JPS5827890B2 (en) 1976-04-01 1976-04-01 Optical beam branching device in video disc playback device

Publications (2)

Publication Number Publication Date
JPS52119907A true JPS52119907A (en) 1977-10-07
JPS5827890B2 JPS5827890B2 (en) 1983-06-13

Family

ID=12435126

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51035197A Expired JPS5827890B2 (en) 1976-04-01 1976-04-01 Optical beam branching device in video disc playback device

Country Status (1)

Country Link
JP (1) JPS5827890B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62142723U (en) * 1986-02-27 1987-09-09

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6210386U (en) * 1985-07-04 1987-01-22

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62142723U (en) * 1986-02-27 1987-09-09

Also Published As

Publication number Publication date
JPS5827890B2 (en) 1983-06-13

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Legal Events

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A131 Notification of reasons for refusal

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Effective date: 20040622

A313 Final decision of rejection without a dissenting response from the applicant

Effective date: 20041011

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A02 Decision of refusal

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