JPS63148429A - 光ヘツド装置 - Google Patents

光ヘツド装置

Info

Publication number
JPS63148429A
JPS63148429A JP61294697A JP29469786A JPS63148429A JP S63148429 A JPS63148429 A JP S63148429A JP 61294697 A JP61294697 A JP 61294697A JP 29469786 A JP29469786 A JP 29469786A JP S63148429 A JPS63148429 A JP S63148429A
Authority
JP
Japan
Prior art keywords
beams
grating
light
lens
optical head
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
JP61294697A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0544098B2 (cs
Inventor
Yuzo Ono
小野　雄三
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 Corp
Original Assignee
NEC Corp
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 Corp filed Critical NEC Corp
Priority to JP61294697A priority Critical patent/JPS63148429A/ja
Publication of JPS63148429A publication Critical patent/JPS63148429A/ja
Publication of JPH0544098B2 publication Critical patent/JPH0544098B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP61294697A 1986-12-12 1986-12-12 光ヘツド装置 Granted JPS63148429A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61294697A JPS63148429A (ja) 1986-12-12 1986-12-12 光ヘツド装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61294697A JPS63148429A (ja) 1986-12-12 1986-12-12 光ヘツド装置

Publications (2)

Publication Number Publication Date
JPS63148429A true JPS63148429A (ja) 1988-06-21
JPH0544098B2 JPH0544098B2 (cs) 1993-07-05

Family

ID=17811130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61294697A Granted JPS63148429A (ja) 1986-12-12 1986-12-12 光ヘツド装置

Country Status (1)

Country Link
JP (1) JPS63148429A (cs)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01253842A (ja) * 1988-03-31 1989-10-11 Matsushita Electric Ind Co Ltd 光ピックアップヘッド装置
JPH02172025A (ja) * 1988-11-03 1990-07-03 Philips Gloeilampenfab:Nv 光学式走査装置
JPH02214033A (ja) * 1988-12-13 1990-08-27 Philips Gloeilampenfab:Nv 光学的走査装置
EP0612064A3 (en) * 1988-06-23 1995-08-30 Sharp Kk Optical scanner.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01253842A (ja) * 1988-03-31 1989-10-11 Matsushita Electric Ind Co Ltd 光ピックアップヘッド装置
EP0612064A3 (en) * 1988-06-23 1995-08-30 Sharp Kk Optical scanner.
JPH02172025A (ja) * 1988-11-03 1990-07-03 Philips Gloeilampenfab:Nv 光学式走査装置
JPH02214033A (ja) * 1988-12-13 1990-08-27 Philips Gloeilampenfab:Nv 光学的走査装置

Also Published As

Publication number Publication date
JPH0544098B2 (cs) 1993-07-05

Similar Documents

Publication Publication Date Title
JP4759617B2 (ja) ピックアップ装置
JPS5856236A (ja) 光学的トラック位置検出装置およびそれを用いた光学的記録再生装置
JPH05307759A (ja) 光ピックアップ
JPS63148429A (ja) 光ヘツド装置
JPS63229640A (ja) 光ヘツド装置
JPS62277635A (ja) 光ヘツド装置
JPH0619838B2 (ja) 光学式再生装置
JPS62137736A (ja) 光ヘツド装置
JPH06274904A (ja) 光ピックアップ装置
JPS6356819A (ja) 光ヘツド装置
JPS62277640A (ja) 光ヘツド装置
JPS5879207A (ja) 光学式ピツクアツプ装置
JPS6313134A (ja) 光ヘツド装置
JP2616722B2 (ja) 光ヘッド装置
JPS62217425A (ja) 光ヘツド装置
JPH0675300B2 (ja) 光学式ヘッド装置
JPS62298029A (ja) スポツト位置エラ−検出系
JPS62217426A (ja) 光ヘツド装置
JP2537843B2 (ja) 光検出装置
KR100219674B1 (ko) 다중 트랙 스캔용 광픽업장치
JPH05307760A (ja) 光ピックアップ
JPH07107743B2 (ja) 光ヘツド装置
JP2001134959A (ja) フォーカス誤差信号検出装置およびフォーカス誤差信号検出方法
JPH06119653A (ja) 光ヘッド装置
JP2000235716A (ja) 光デバイス

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term