JP2004281050A5 - - Google Patents

Download PDF

Info

Publication number
JP2004281050A5
JP2004281050A5 JP2004164262A JP2004164262A JP2004281050A5 JP 2004281050 A5 JP2004281050 A5 JP 2004281050A5 JP 2004164262 A JP2004164262 A JP 2004164262A JP 2004164262 A JP2004164262 A JP 2004164262A JP 2004281050 A5 JP2004281050 A5 JP 2004281050A5
Authority
JP
Japan
Prior art keywords
light
information medium
substrate
thickness
objective lens
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
JP2004164262A
Other languages
English (en)
Japanese (ja)
Other versions
JP2004281050A (ja
JP4201196B2 (ja
Filing date
Publication date
Application filed filed Critical
Priority to JP2004164262A priority Critical patent/JP4201196B2/ja
Priority claimed from JP2004164262A external-priority patent/JP4201196B2/ja
Publication of JP2004281050A publication Critical patent/JP2004281050A/ja
Publication of JP2004281050A5 publication Critical patent/JP2004281050A5/ja
Application granted granted Critical
Publication of JP4201196B2 publication Critical patent/JP4201196B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

JP2004164262A 1995-05-30 2004-06-02 光ヘッド装置および光ディスク装置 Expired - Lifetime JP4201196B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004164262A JP4201196B2 (ja) 1995-05-30 2004-06-02 光ヘッド装置および光ディスク装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP13136095 1995-05-30
JP2004164262A JP4201196B2 (ja) 1995-05-30 2004-06-02 光ヘッド装置および光ディスク装置

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2003293771A Division JP2004039248A (ja) 1995-05-30 2003-08-15 対物レンズ、光ヘッド装置および光ディスク装置

Publications (3)

Publication Number Publication Date
JP2004281050A JP2004281050A (ja) 2004-10-07
JP2004281050A5 true JP2004281050A5 (enExample) 2007-04-19
JP4201196B2 JP4201196B2 (ja) 2008-12-24

Family

ID=33301327

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004164262A Expired - Lifetime JP4201196B2 (ja) 1995-05-30 2004-06-02 光ヘッド装置および光ディスク装置

Country Status (1)

Country Link
JP (1) JP4201196B2 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006043687A1 (en) * 2004-10-22 2006-04-27 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device

Similar Documents

Publication Publication Date Title
JP3123969B2 (ja) 複数の光ディスク仕様に互換する対物レンズを備えた光ピックアップ
JP2000131604A (ja) 階段型回折格子構造を有する平板レンズを採用してｃｄ―ｒｗに互換するｄｖｄ用光記録／ピックアップヘッド
JP2002150595A (ja) 光ピックアップ装置用の対物レンズ及び光ピックアップ装置
US8009527B2 (en) Optical pickup device
JP4329608B2 (ja) 対物レンズ、光ピックアップ装置及び光情報記録再生装置
KR100200848B1 (ko) 2중 초점 형성방법 및 이를 이용한 광픽업
JP2002092934A (ja) 単一光源を採用した互換型光ピックアップ装置
CN101079285B (zh) 光拾取装置
JP4229924B2 (ja) 光ピックアップ装置
JP2004281050A5 (enExample)
JP2005174526A (ja) 光ピックアップ装置
JP2008532081A (ja) 光走査装置
EP2144239B1 (en) Optical pickup and optical device
JPH08221789A (ja) 光情報処理装置
JP2001076371A5 (enExample)
KR100728369B1 (ko) 홀로그래피 회절발을 이용한 광픽업장치
JP4161439B2 (ja) 光ヘッド
CN101013583B (zh) 光学头
KR100289719B1 (ko) 호환형광픽업장치
JP4706481B2 (ja) 光ピックアップ装置
US20070183295A1 (en) Optical pickup device
JP2004014050A (ja) 回折素子および光ピックアップヘッド装置
KR100421012B1 (ko) 홀로그램이 형성된 빔스프리터를 구비한 광픽업장치와이를 이용한 광축보정방법
JP2001076376A (ja) 光ピックアップ装置
KR0167930B1 (ko) 초소형 듀얼 포커스 광 픽-업장치