JPS61189416U - - Google Patents

Info

Publication number
JPS61189416U
JPS61189416U JP7487685U JP7487685U JPS61189416U JP S61189416 U JPS61189416 U JP S61189416U JP 7487685 U JP7487685 U JP 7487685U JP 7487685 U JP7487685 U JP 7487685U JP S61189416 U JPS61189416 U JP S61189416U
Authority
JP
Japan
Prior art keywords
light
receiving element
pickup device
optical
order diffracted
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
JP7487685U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0519852Y2 (en:Method
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 JP7487685U priority Critical patent/JPH0519852Y2/ja
Publication of JPS61189416U publication Critical patent/JPS61189416U/ja
Application granted granted Critical
Publication of JPH0519852Y2 publication Critical patent/JPH0519852Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP7487685U 1985-05-20 1985-05-20 Expired - Lifetime JPH0519852Y2 (en:Method)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7487685U JPH0519852Y2 (en:Method) 1985-05-20 1985-05-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7487685U JPH0519852Y2 (en:Method) 1985-05-20 1985-05-20

Publications (2)

Publication Number Publication Date
JPS61189416U true JPS61189416U (en:Method) 1986-11-26
JPH0519852Y2 JPH0519852Y2 (en:Method) 1993-05-25

Family

ID=30615574

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7487685U Expired - Lifetime JPH0519852Y2 (en:Method) 1985-05-20 1985-05-20

Country Status (1)

Country Link
JP (1) JPH0519852Y2 (en:Method)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03147527A (ja) * 1989-11-02 1991-06-24 Olympus Optical Co Ltd 光学ヘッド

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03147527A (ja) * 1989-11-02 1991-06-24 Olympus Optical Co Ltd 光学ヘッド

Also Published As

Publication number Publication date
JPH0519852Y2 (en:Method) 1993-05-25

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