JPH01121838U - - Google Patents

Info

Publication number
JPH01121838U
JPH01121838U JP19806687U JP19806687U JPH01121838U JP H01121838 U JPH01121838 U JP H01121838U JP 19806687 U JP19806687 U JP 19806687U JP 19806687 U JP19806687 U JP 19806687U JP H01121838 U JPH01121838 U JP H01121838U
Authority
JP
Japan
Prior art keywords
guide groove
optical disk
optical pickup
optical
circuit
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
JP19806687U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0749414Y2 (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 JP19806687U priority Critical patent/JPH0749414Y2/ja
Publication of JPH01121838U publication Critical patent/JPH01121838U/ja
Application granted granted Critical
Publication of JPH0749414Y2 publication Critical patent/JPH0749414Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Manufacturing Optical Record Carriers (AREA)
JP19806687U 1987-12-26 1987-12-26 光ディスク検査装置 Expired - Lifetime JPH0749414Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19806687U JPH0749414Y2 (ja) 1987-12-26 1987-12-26 光ディスク検査装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19806687U JPH0749414Y2 (ja) 1987-12-26 1987-12-26 光ディスク検査装置

Publications (2)

Publication Number Publication Date
JPH01121838U true JPH01121838U (enrdf_load_stackoverflow) 1989-08-18
JPH0749414Y2 JPH0749414Y2 (ja) 1995-11-13

Family

ID=31488591

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19806687U Expired - Lifetime JPH0749414Y2 (ja) 1987-12-26 1987-12-26 光ディスク検査装置

Country Status (1)

Country Link
JP (1) JPH0749414Y2 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011237255A (ja) * 2010-05-10 2011-11-24 Hitachi High-Technologies Corp パターン形状検査装置及び検査方法並びにパターンドメディアディスク製造ライン

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011237255A (ja) * 2010-05-10 2011-11-24 Hitachi High-Technologies Corp パターン形状検査装置及び検査方法並びにパターンドメディアディスク製造ライン

Also Published As

Publication number Publication date
JPH0749414Y2 (ja) 1995-11-13

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