JP2565185B2 - 光学式ヘッド - Google Patents

光学式ヘッド

Info

Publication number
JP2565185B2
JP2565185B2 JP60092814A JP9281485A JP2565185B2 JP 2565185 B2 JP2565185 B2 JP 2565185B2 JP 60092814 A JP60092814 A JP 60092814A JP 9281485 A JP9281485 A JP 9281485A JP 2565185 B2 JP2565185 B2 JP 2565185B2
Authority
JP
Japan
Prior art keywords
beams
incident
reflected
order
semiconductor laser
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.)
Expired - Lifetime
Application number
JP60092814A
Other languages
English (en)
Japanese (ja)
Other versions
JPS61250844A (ja
Inventor
潔 大里
康徳 寺山
敦 福本
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP60092814A priority Critical patent/JP2565185B2/ja
Priority to US06/753,570 priority patent/US4742506A/en
Priority to CA000486654A priority patent/CA1239474A/en
Priority to DE8585305007T priority patent/DE3575036D1/de
Priority to EP85305007A priority patent/EP0171929B1/en
Priority to KR1019850005512A priority patent/KR930002163B1/ko
Publication of JPS61250844A publication Critical patent/JPS61250844A/ja
Application granted granted Critical
Publication of JP2565185B2 publication Critical patent/JP2565185B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP60092814A 1984-07-12 1985-04-30 光学式ヘッド Expired - Lifetime JP2565185B2 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP60092814A JP2565185B2 (ja) 1985-04-30 1985-04-30 光学式ヘッド
US06/753,570 US4742506A (en) 1984-07-12 1985-07-10 Tracking error detecting apparatus for an optical head with skew error reduction by using an inclined header portion
CA000486654A CA1239474A (en) 1984-07-12 1985-07-11 Tracking error detecting apparatus for an optical head
DE8585305007T DE3575036D1 (de) 1984-07-12 1985-07-12 Vorrichtung zur ermittlung eines spurfolgefehlers.
EP85305007A EP0171929B1 (en) 1984-07-12 1985-07-12 Tracking error detecting apparatus
KR1019850005512A KR930002163B1 (ko) 1985-04-30 1985-07-31 광학식 헤드의 트랙킹 오차 검출장치

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60092814A JP2565185B2 (ja) 1985-04-30 1985-04-30 光学式ヘッド

Publications (2)

Publication Number Publication Date
JPS61250844A JPS61250844A (ja) 1986-11-07
JP2565185B2 true JP2565185B2 (ja) 1996-12-18

Family

ID=14064882

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60092814A Expired - Lifetime JP2565185B2 (ja) 1984-07-12 1985-04-30 光学式ヘッド

Country Status (2)

Country Link
JP (1) JP2565185B2 (ko)
KR (1) KR930002163B1 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7106771B2 (en) 2002-08-28 2006-09-12 Sharp Kabushiki Kaisha Semiconductor laser device and optical pickup device
US7355933B2 (en) 2002-08-07 2008-04-08 Sharp Kabushiki Kaisha Optical pickup device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6967979B2 (en) 2000-10-06 2005-11-22 Sharp Kabushiki Kaisha Semiconductor laser device, optical pickup and fabrication method of semiconductor laser device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57106091A (en) * 1980-12-23 1982-07-01 Mitsubishi Electric Corp Semiconductor laser device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
第３２回応用物理学関係連合講演会予稿集、Ｐ．１０７、「光ディスク・ピックアップ・トラッキング信号の戻り光によるＤＣ変動」１９８５年３月

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7355933B2 (en) 2002-08-07 2008-04-08 Sharp Kabushiki Kaisha Optical pickup device
US7106771B2 (en) 2002-08-28 2006-09-12 Sharp Kabushiki Kaisha Semiconductor laser device and optical pickup device

Also Published As

Publication number Publication date
JPS61250844A (ja) 1986-11-07
KR860008531A (ko) 1986-11-15
KR930002163B1 (ko) 1993-03-27

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term