JPS6172719U - - Google Patents

Info

Publication number
JPS6172719U
JPS6172719U JP15478684U JP15478684U JPS6172719U JP S6172719 U JPS6172719 U JP S6172719U JP 15478684 U JP15478684 U JP 15478684U JP 15478684 U JP15478684 U JP 15478684U JP S6172719 U JPS6172719 U JP S6172719U
Authority
JP
Japan
Prior art keywords
light
recording medium
focus control
refractive index
lens
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.)
Pending
Application number
JP15478684U
Other languages
English (en)
Japanese (ja)
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 filed Critical
Priority to JP15478684U priority Critical patent/JPS6172719U/ja
Publication of JPS6172719U publication Critical patent/JPS6172719U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP15478684U 1984-10-12 1984-10-12 Pending JPS6172719U (enExample)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15478684U JPS6172719U (enExample) 1984-10-12 1984-10-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15478684U JPS6172719U (enExample) 1984-10-12 1984-10-12

Publications (1)

Publication Number Publication Date
JPS6172719U true JPS6172719U (enExample) 1986-05-17

Family

ID=30712779

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15478684U Pending JPS6172719U (enExample) 1984-10-12 1984-10-12

Country Status (1)

Country Link
JP (1) JPS6172719U (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010084784A1 (ja) * 2009-01-26 2010-07-29 パナソニック株式会社 光学ヘッド及び光情報装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010084784A1 (ja) * 2009-01-26 2010-07-29 パナソニック株式会社 光学ヘッド及び光情報装置
JP5566915B2 (ja) * 2009-01-26 2014-08-06 パナソニック株式会社 光学ヘッド及び光情報装置

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