JP2542877Y2 - 成形型および成形型により成形された光学素子 - Google Patents

成形型および成形型により成形された光学素子

Info

Publication number
JP2542877Y2
JP2542877Y2 JP1990401899U JP40189990U JP2542877Y2 JP 2542877 Y2 JP2542877 Y2 JP 2542877Y2 JP 1990401899 U JP1990401899 U JP 1990401899U JP 40189990 U JP40189990 U JP 40189990U JP 2542877 Y2 JP2542877 Y2 JP 2542877Y2
Authority
JP
Japan
Prior art keywords
mold
convex
concave
optical element
longitudinal direction
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.)
Expired - Fee Related
Application number
JP1990401899U
Other languages
English (en)
Japanese (ja)
Other versions
JPH045920U (cs
Inventor
康生 山中
章一 江原
慎治 古賀
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP1990401899U priority Critical patent/JP2542877Y2/ja
Publication of JPH045920U publication Critical patent/JPH045920U/ja
Application granted granted Critical
Publication of JP2542877Y2 publication Critical patent/JP2542877Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
JP1990401899U 1990-05-08 1990-12-26 成形型および成形型により成形された光学素子 Expired - Fee Related JP2542877Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990401899U JP2542877Y2 (ja) 1990-05-08 1990-12-26 成形型および成形型により成形された光学素子

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2-48470 1990-05-08
JP4847090 1990-05-08
JP1990401899U JP2542877Y2 (ja) 1990-05-08 1990-12-26 成形型および成形型により成形された光学素子

Publications (2)

Publication Number Publication Date
JPH045920U JPH045920U (cs) 1992-01-20
JP2542877Y2 true JP2542877Y2 (ja) 1997-07-30

Family

ID=31890076

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990401899U Expired - Fee Related JP2542877Y2 (ja) 1990-05-08 1990-12-26 成形型および成形型により成形された光学素子

Country Status (1)

Country Link
JP (1) JP2542877Y2 (cs)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6363001A (ja) * 1986-09-04 1988-03-19 Matsushita Electric Ind Co Ltd レンズ及びその製造方法

Also Published As

Publication number Publication date
JPH045920U (cs) 1992-01-20

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