JP2000028918A5 - - Google Patents

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Publication number
JP2000028918A5
JP2000028918A5 JP1998213462A JP21346298A JP2000028918A5 JP 2000028918 A5 JP2000028918 A5 JP 2000028918A5 JP 1998213462 A JP1998213462 A JP 1998213462A JP 21346298 A JP21346298 A JP 21346298A JP 2000028918 A5 JP2000028918 A5 JP 2000028918A5
Authority
JP
Japan
Prior art keywords
divided
astigmatism
objective lens
optical axis
divided surface
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
JP1998213462A
Other languages
Japanese (ja)
Other versions
JP2000028918A (en
Filing date
Publication date
Application filed filed Critical
Priority to JP10213462A priority Critical patent/JP2000028918A/en
Priority claimed from JP10213462A external-priority patent/JP2000028918A/en
Publication of JP2000028918A publication Critical patent/JP2000028918A/en
Publication of JP2000028918A5 publication Critical patent/JP2000028918A5/ja
Pending legal-status Critical Current

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Claims (1)

対物レンズは光軸から周縁までを３分割した輪帯状の屈折面を有し、光軸を含む第１の分割面およびその外側の第２分割面は非点収差を有し、もっとも外側の第３分割面は非点収差を持たない請求項２の光ピックアップ装置用の対物レンズThe objective lens has a ring-shaped refracting surface that is divided into three from the optical axis to the peripheral edge, and the first divided surface including the optical axis and the second divided surface on the outer side have astigmatism and are the outermost third. The objective lens for the optical pickup device according to claim 2, wherein the three-divided surface does not have astigmatism.
JP10213462A 1998-07-14 1998-07-14 Condensing optical system for optical pickup device Pending JP2000028918A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10213462A JP2000028918A (en) 1998-07-14 1998-07-14 Condensing optical system for optical pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10213462A JP2000028918A (en) 1998-07-14 1998-07-14 Condensing optical system for optical pickup device

Publications (2)

Publication Number Publication Date
JP2000028918A JP2000028918A (en) 2000-01-28
JP2000028918A5 true JP2000028918A5 (en) 2005-10-20

Family

ID=16639618

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10213462A Pending JP2000028918A (en) 1998-07-14 1998-07-14 Condensing optical system for optical pickup device

Country Status (1)

Country Link
JP (1) JP2000028918A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2341681A1 (en) 1999-06-23 2000-12-28 Matsushita Electric Industrial Co., Ltd. Objective lens for optical disk, optical head device and optical information recording and reproducing apparatus using the same, and mold for molding lens, method for working the mold for molding lens, and profile measuring device for measuring profile of the mold for molding lens
KR20060110273A (en) * 2003-12-25 2006-10-24 코니카 미놀타 옵토 인코포레이티드 Object lens, optical pickup device and optical information recording/reproducing device
JP5435471B2 (en) * 2009-11-11 2014-03-05 古河電気工業株式会社 Semiconductor laser module

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