JPH02123722U - - Google Patents

Info

Publication number
JPH02123722U
JPH02123722U JP3054389U JP3054389U JPH02123722U JP H02123722 U JPH02123722 U JP H02123722U JP 3054389 U JP3054389 U JP 3054389U JP 3054389 U JP3054389 U JP 3054389U JP H02123722 U JPH02123722 U JP H02123722U
Authority
JP
Japan
Prior art keywords
light
disk
optical
optical head
light source
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
JP3054389U
Other languages
English (en)
Japanese (ja)
Other versions
JP2504524Y2 (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 JP1989030543U priority Critical patent/JP2504524Y2/ja
Publication of JPH02123722U publication Critical patent/JPH02123722U/ja
Application granted granted Critical
Publication of JP2504524Y2 publication Critical patent/JP2504524Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP1989030543U 1989-03-17 1989-03-17 光ヘッド Expired - Lifetime JP2504524Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989030543U JP2504524Y2 (ja) 1989-03-17 1989-03-17 光ヘッド

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989030543U JP2504524Y2 (ja) 1989-03-17 1989-03-17 光ヘッド

Publications (2)

Publication Number Publication Date
JPH02123722U true JPH02123722U (US20020193084A1-20021219-M00002.png) 1990-10-11
JP2504524Y2 JP2504524Y2 (ja) 1996-07-10

Family

ID=31255690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989030543U Expired - Lifetime JP2504524Y2 (ja) 1989-03-17 1989-03-17 光ヘッド

Country Status (1)

Country Link
JP (1) JP2504524Y2 (US20020193084A1-20021219-M00002.png)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0528524A (ja) * 1991-07-22 1993-02-05 Nec Corp 光ヘツド装置
JPH06119653A (ja) * 1992-10-07 1994-04-28 Nec Corp 光ヘッド装置
WO2012098859A1 (ja) * 2011-01-20 2012-07-26 三菱電機株式会社 光ピックアップ装置及び光ディスク装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56116004A (en) * 1980-02-20 1981-09-11 Olympus Optical Co Ltd Lens for video disk
JPS62236152A (ja) * 1986-04-07 1987-10-16 Olympus Optical Co Ltd 光学式ピツクアツプ
JPS63228431A (ja) * 1987-03-18 1988-09-22 Matsushita Electric Ind Co Ltd 光情報ピツクアツプ装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56116004A (en) * 1980-02-20 1981-09-11 Olympus Optical Co Ltd Lens for video disk
JPS62236152A (ja) * 1986-04-07 1987-10-16 Olympus Optical Co Ltd 光学式ピツクアツプ
JPS63228431A (ja) * 1987-03-18 1988-09-22 Matsushita Electric Ind Co Ltd 光情報ピツクアツプ装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0528524A (ja) * 1991-07-22 1993-02-05 Nec Corp 光ヘツド装置
JPH06119653A (ja) * 1992-10-07 1994-04-28 Nec Corp 光ヘッド装置
WO2012098859A1 (ja) * 2011-01-20 2012-07-26 三菱電機株式会社 光ピックアップ装置及び光ディスク装置
CN103329202A (zh) * 2011-01-20 2013-09-25 三菱电机株式会社 光拾取装置及光盘装置
JP5398924B2 (ja) * 2011-01-20 2014-01-29 三菱電機株式会社 光ピックアップ装置及び光ディスク装置
US8787137B2 (en) 2011-01-20 2014-07-22 Mitsubishi Electric Corporation Optical pickup device and optical disc device

Also Published As

Publication number Publication date
JP2504524Y2 (ja) 1996-07-10

Similar Documents

Publication Publication Date Title
US4907847A (en) Optical pickup and hologram therefor
US5050153A (en) Semiconductor laser optical head assembly
KR920022229A (ko) 광픽업
JPH0296618U (US20020193084A1-20021219-M00002.png)
EP0348221B1 (en) An optical pickup apparatus
JPH06103543B2 (ja) レーザピックアップ
JP2701849B2 (ja) 光ピックアップ装置
JPH02123722U (US20020193084A1-20021219-M00002.png)
JPH06101138B2 (ja) 光ヘツド装置
JPS6486332A (en) Optical pickup
JP2594445B2 (ja) ホログラム光ヘッド
KR910020667A (ko) 광헤드장치
US6466526B1 (en) Apparatus for recording and replaying information on optical information record medium and optical pickup
JPH0619838B2 (ja) 光学式再生装置
KR0144874B1 (ko) 광픽업장치
JPS6222727U (US20020193084A1-20021219-M00002.png)
JP2788723B2 (ja) 光スポツト位置エラー検出装置
JPH0519852Y2 (US20020193084A1-20021219-M00002.png)
KR200172919Y1 (ko) 홀로그램소자를 채용한 광픽업 장치
JP2552202Y2 (ja) ホログラム光ヘッド
KR970060095A (ko) 위상 개구를 이용한 광픽업장치
KR100467588B1 (ko) 광검출기 구조 및 레이저의 장축과 피트의 사잇각 조절 방법
JPS6120228A (ja) 光学式変位検出装置
KR100224896B1 (ko) 광이용 효율을 높인 광 픽업 장치
JPH02199632A (ja) ホログラム光ヘッド

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term