JPS6486332A - Optical pickup - Google Patents

Optical pickup

Info

Publication number
JPS6486332A
JPS6486332A JP62243489A JP24348987A JPS6486332A JP S6486332 A JPS6486332 A JP S6486332A JP 62243489 A JP62243489 A JP 62243489A JP 24348987 A JP24348987 A JP 24348987A JP S6486332 A JPS6486332 A JP S6486332A
Authority
JP
Japan
Prior art keywords
light
hologram
split photodetector
adjustment
diffracted
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
JP62243489A
Other languages
English (en)
Inventor
Shiyuuichi Onayama
Kazuhiko Nosaka
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.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric 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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP62243489A priority Critical patent/JPS6486332A/ja
Priority to US07/227,330 priority patent/US4907847A/en
Priority to DE88112739T priority patent/DE3885224T2/de
Priority to EP88112739A priority patent/EP0309689B1/en
Publication of JPS6486332A publication Critical patent/JPS6486332A/ja
Priority to US07/446,820 priority patent/US5016954A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP62243489A 1987-09-28 1987-09-28 Optical pickup Pending JPS6486332A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP62243489A JPS6486332A (en) 1987-09-28 1987-09-28 Optical pickup
US07/227,330 US4907847A (en) 1987-09-28 1988-08-02 Optical pickup and hologram therefor
DE88112739T DE3885224T2 (de) 1987-09-28 1988-08-04 Optische Abtastvorrichtung und holographischer Strahlteiler dafür.
EP88112739A EP0309689B1 (en) 1987-09-28 1988-08-04 Optical pickup and hologram therefor
US07/446,820 US5016954A (en) 1987-09-28 1990-01-02 Optical pickup and hologram therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62243489A JPS6486332A (en) 1987-09-28 1987-09-28 Optical pickup

Publications (1)

Publication Number Publication Date
JPS6486332A true JPS6486332A (en) 1989-03-31

Family

ID=17104652

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62243489A Pending JPS6486332A (en) 1987-09-28 1987-09-28 Optical pickup

Country Status (1)

Country Link
JP (1) JPS6486332A (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0397127A (ja) * 1989-09-08 1991-04-23 Sharp Corp 光ピックアップ装置
US5272550A (en) * 1991-10-11 1993-12-21 International Business Machines Corporation Hologram system
US5331445A (en) * 1992-08-18 1994-07-19 International Business Machines Corporation Increased Bragg angle sensitivity hologram system and method
US5602657A (en) * 1992-12-17 1997-02-11 International Business Machines Corporation Hologram system having hologram layers with rotationally offset Bragg planes
KR100224831B1 (ko) * 1996-09-06 1999-10-15 윤종용 광픽업장치
KR100661196B1 (ko) * 1999-02-10 2006-12-22 로무 가부시키가이샤 광픽업 및 홀로그램소자

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58220249A (ja) * 1982-06-15 1983-12-21 Nippon Kogaku Kk <Nikon> 光学式ピツクアツプ
JPS62145536A (ja) * 1985-12-19 1987-06-29 Nec Corp 光ピツクアツプ用スポツト位置エラ−検出系
JPS62172538A (ja) * 1986-01-24 1987-07-29 Nec Corp 光ヘツド装置
JPS62277635A (ja) * 1986-05-26 1987-12-02 Nec Corp 光ヘツド装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58220249A (ja) * 1982-06-15 1983-12-21 Nippon Kogaku Kk <Nikon> 光学式ピツクアツプ
JPS62145536A (ja) * 1985-12-19 1987-06-29 Nec Corp 光ピツクアツプ用スポツト位置エラ−検出系
JPS62172538A (ja) * 1986-01-24 1987-07-29 Nec Corp 光ヘツド装置
JPS62277635A (ja) * 1986-05-26 1987-12-02 Nec Corp 光ヘツド装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0397127A (ja) * 1989-09-08 1991-04-23 Sharp Corp 光ピックアップ装置
US5272550A (en) * 1991-10-11 1993-12-21 International Business Machines Corporation Hologram system
US5331445A (en) * 1992-08-18 1994-07-19 International Business Machines Corporation Increased Bragg angle sensitivity hologram system and method
US5602657A (en) * 1992-12-17 1997-02-11 International Business Machines Corporation Hologram system having hologram layers with rotationally offset Bragg planes
KR100224831B1 (ko) * 1996-09-06 1999-10-15 윤종용 광픽업장치
KR100661196B1 (ko) * 1999-02-10 2006-12-22 로무 가부시키가이샤 광픽업 및 홀로그램소자

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