JPS61236037A - 光ヘッドの焦点誤差検出装置 - Google Patents

光ヘッドの焦点誤差検出装置

Info

Publication number
JPS61236037A
JPS61236037A JP60075877A JP7587785A JPS61236037A JP S61236037 A JPS61236037 A JP S61236037A JP 60075877 A JP60075877 A JP 60075877A JP 7587785 A JP7587785 A JP 7587785A JP S61236037 A JPS61236037 A JP S61236037A
Authority
JP
Japan
Prior art keywords
light
thin film
optical waveguide
focus error
detection device
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
JP60075877A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0453007B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
Teruo Fujita
輝雄 藤田
Keizo Kono
河野　慶三
Mitsushige Kondo
近藤　光重
Shinsuke Shikama
信介 鹿間
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP60075877A priority Critical patent/JPS61236037A/ja
Priority to DE19853536497 priority patent/DE3536497A1/de
Priority to US06/787,782 priority patent/US4672187A/en
Publication of JPS61236037A publication Critical patent/JPS61236037A/ja
Publication of JPH0453007B2 publication Critical patent/JPH0453007B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP60075877A 1984-10-16 1985-04-10 光ヘッドの焦点誤差検出装置 Granted JPS61236037A (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP60075877A JPS61236037A (ja) 1985-04-10 1985-04-10 光ヘッドの焦点誤差検出装置
DE19853536497 DE3536497A1 (de) 1984-10-16 1985-10-12 Vorrichtung zur erfassung von fokussierungsfehlern in einer kopfanordnung fuer optische scheiben
US06/787,782 US4672187A (en) 1984-10-16 1985-10-15 Focusing error detecting device in head assembly for optical disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60075877A JPS61236037A (ja) 1985-04-10 1985-04-10 光ヘッドの焦点誤差検出装置

Publications (2)

Publication Number Publication Date
JPS61236037A true JPS61236037A (ja) 1986-10-21
JPH0453007B2 JPH0453007B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-08-25

Family

ID=13588945

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60075877A Granted JPS61236037A (ja) 1984-10-16 1985-04-10 光ヘッドの焦点誤差検出装置

Country Status (1)

Country Link
JP (1) JPS61236037A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02193334A (ja) * 1989-01-20 1990-07-31 Sanyo Electric Co Ltd 光導波路装置
US5159586A (en) * 1985-05-24 1992-10-27 Omron Tateisi Electronics Co. Device for processing optical data
US5218584A (en) * 1990-10-30 1993-06-08 International Business Machines Corporation Integrated optical head structure
KR20170034214A (ko) * 2015-09-18 2017-03-28 삼성전자주식회사 광학 장치
JP2021089307A (ja) * 2019-12-02 2021-06-10 株式会社豊田中央研究所 投受光光学系、および光学装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5159586A (en) * 1985-05-24 1992-10-27 Omron Tateisi Electronics Co. Device for processing optical data
JPH02193334A (ja) * 1989-01-20 1990-07-31 Sanyo Electric Co Ltd 光導波路装置
US5218584A (en) * 1990-10-30 1993-06-08 International Business Machines Corporation Integrated optical head structure
KR20170034214A (ko) * 2015-09-18 2017-03-28 삼성전자주식회사 광학 장치
JP2021089307A (ja) * 2019-12-02 2021-06-10 株式会社豊田中央研究所 投受光光学系、および光学装置

Also Published As

Publication number Publication date
JPH0453007B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-08-25

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