JPS53147508A - Focus controller - Google Patents

Focus controller

Info

Publication number
JPS53147508A
JPS53147508A JP6180277A JP6180277A JPS53147508A JP S53147508 A JPS53147508 A JP S53147508A JP 6180277 A JP6180277 A JP 6180277A JP 6180277 A JP6180277 A JP 6180277A JP S53147508 A JPS53147508 A JP S53147508A
Authority
JP
Japan
Prior art keywords
focus controller
multilayer
recording
condensig
distances
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
JP6180277A
Other languages
Japanese (ja)
Other versions
JPS6032262B2 (en
Inventor
Akinori Watabe
Shuzo Fukunishi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP6180277A priority Critical patent/JPS6032262B2/en
Publication of JPS53147508A publication Critical patent/JPS53147508A/en
Publication of JPS6032262B2 publication Critical patent/JPS6032262B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To facilitate the condensig of light onto a multilayer recording with a high accuracy by changing the carrier frequency applied to each detecting electrode formed in multilayer structure and making the distances between the recording medium surfaces set with the electrodes and a lens to electrical signals independently and simultaneously.
COPYRIGHT: (C)1978,JPO&Japio
JP6180277A 1977-05-27 1977-05-27 focus adjustment device Expired JPS6032262B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6180277A JPS6032262B2 (en) 1977-05-27 1977-05-27 focus adjustment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6180277A JPS6032262B2 (en) 1977-05-27 1977-05-27 focus adjustment device

Publications (2)

Publication Number Publication Date
JPS53147508A true JPS53147508A (en) 1978-12-22
JPS6032262B2 JPS6032262B2 (en) 1985-07-26

Family

ID=13181578

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6180277A Expired JPS6032262B2 (en) 1977-05-27 1977-05-27 focus adjustment device

Country Status (1)

Country Link
JP (1) JPS6032262B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0610163U (en) * 1992-07-14 1994-02-08 セイコーエプソン株式会社 Solution container for contact lenses

Also Published As

Publication number Publication date
JPS6032262B2 (en) 1985-07-26

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