JPH0296629U - - Google Patents

Info

Publication number
JPH0296629U
JPH0296629U JP451689U JP451689U JPH0296629U JP H0296629 U JPH0296629 U JP H0296629U JP 451689 U JP451689 U JP 451689U JP 451689 U JP451689 U JP 451689U JP H0296629 U JPH0296629 U JP H0296629U
Authority
JP
Japan
Prior art keywords
light beam
prism
reflected light
optical axis
plane
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
JP451689U
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 JP451689U priority Critical patent/JPH0296629U/ja
Publication of JPH0296629U publication Critical patent/JPH0296629U/ja
Pending legal-status Critical Current

Links

JP451689U 1989-01-20 1989-01-20 Pending JPH0296629U (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP451689U JPH0296629U (fr) 1989-01-20 1989-01-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP451689U JPH0296629U (fr) 1989-01-20 1989-01-20

Publications (1)

Publication Number Publication Date
JPH0296629U true JPH0296629U (fr) 1990-08-01

Family

ID=31207100

Family Applications (1)

Application Number Title Priority Date Filing Date
JP451689U Pending JPH0296629U (fr) 1989-01-20 1989-01-20

Country Status (1)

Country Link
JP (1) JPH0296629U (fr)

Similar Documents

Publication Publication Date Title
US5150350A (en) Magneto-optical data recording and reproducing device
JPH0296629U (fr)
US5939710A (en) Optical pickup system incorporating therein a beam splitter having a phase layer
JPH0766548B2 (ja) フオ−カス検出装置
JPH05303016A (ja) 光ピックアップ
JPH09106569A (ja) 光ピックアップ装置
US5905254A (en) Compact sized optical pickup system
JP3356814B2 (ja) 光磁気記録再生装置における光束分離光学系
JP2933396B2 (ja) 偏光分離光学系
JP2581779B2 (ja) 光磁気記録媒体からの信号検出装置
US6021105A (en) Knife edge method for use in an optical pickup system
KR950000894B1 (ko) 광디스크 드라이버의 초점 오차 검출방법
JPS61186903A (ja) 光分離素子
KR0135859B1 (ko) 광헤드
JPS63118714U (fr)
JP2707361B2 (ja) 光ピックアップの光学装置
JP2570325B2 (ja) 光学ヘッド
KR0125963B1 (ko) 광디스크용 픽업 광학계
JPH04170724A (ja) 光学式ピックアップ装置
JPS63187440A (ja) 光学ヘツド
JPS63157818U (fr)
JPH02148406U (fr)
JPH05347029A (ja) 偏光ビームスプリッタ
JPS60135818U (ja) フオ−カス誤差検出装置
JPS6128113U (ja) 焦点検出装置