JPH01133313U - - Google Patents

Info

Publication number
JPH01133313U
JPH01133313U JP3009588U JP3009588U JPH01133313U JP H01133313 U JPH01133313 U JP H01133313U JP 3009588 U JP3009588 U JP 3009588U JP 3009588 U JP3009588 U JP 3009588U JP H01133313 U JPH01133313 U JP H01133313U
Authority
JP
Japan
Prior art keywords
light
resin layer
shielding film
knife edge
reading beam
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
JP3009588U
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 JP3009588U priority Critical patent/JPH01133313U/ja
Publication of JPH01133313U publication Critical patent/JPH01133313U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP3009588U 1988-03-07 1988-03-07 Pending JPH01133313U (OSRAM)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3009588U JPH01133313U (OSRAM) 1988-03-07 1988-03-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3009588U JPH01133313U (OSRAM) 1988-03-07 1988-03-07

Publications (1)

Publication Number Publication Date
JPH01133313U true JPH01133313U (OSRAM) 1989-09-11

Family

ID=31254853

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3009588U Pending JPH01133313U (OSRAM) 1988-03-07 1988-03-07

Country Status (1)

Country Link
JP (1) JPH01133313U (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003016683A (ja) * 2001-06-29 2003-01-17 Ricoh Co Ltd 光ピックアップ装置及び積層光学素子の作成方法及び光ディスクドライブ装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586534A (ja) * 1981-07-03 1983-01-14 Matsushita Electric Ind Co Ltd 再生装置の光学装置
JPS61287042A (ja) * 1985-06-12 1986-12-17 Pioneer Electronic Corp 光学式ピツクアツプ装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS586534A (ja) * 1981-07-03 1983-01-14 Matsushita Electric Ind Co Ltd 再生装置の光学装置
JPS61287042A (ja) * 1985-06-12 1986-12-17 Pioneer Electronic Corp 光学式ピツクアツプ装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003016683A (ja) * 2001-06-29 2003-01-17 Ricoh Co Ltd 光ピックアップ装置及び積層光学素子の作成方法及び光ディスクドライブ装置

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