JPS57105832A - Detector for optical position - Google Patents

Detector for optical position

Info

Publication number
JPS57105832A
JPS57105832A JP18068880A JP18068880A JPS57105832A JP S57105832 A JPS57105832 A JP S57105832A JP 18068880 A JP18068880 A JP 18068880A JP 18068880 A JP18068880 A JP 18068880A JP S57105832 A JPS57105832 A JP S57105832A
Authority
JP
Japan
Prior art keywords
photodetector
error signal
adjustment
light
sum
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
JP18068880A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6331858B2 (enrdf_load_stackoverflow
Inventor
Tsuneo Hirose
Shinichi Tanaka
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP18068880A priority Critical patent/JPS57105832A/ja
Publication of JPS57105832A publication Critical patent/JPS57105832A/ja
Publication of JPS6331858B2 publication Critical patent/JPS6331858B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Automatic Focus Adjustment (AREA)
JP18068880A 1980-12-19 1980-12-19 Detector for optical position Granted JPS57105832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18068880A JPS57105832A (en) 1980-12-19 1980-12-19 Detector for optical position

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18068880A JPS57105832A (en) 1980-12-19 1980-12-19 Detector for optical position

Publications (2)

Publication Number Publication Date
JPS57105832A true JPS57105832A (en) 1982-07-01
JPS6331858B2 JPS6331858B2 (enrdf_load_stackoverflow) 1988-06-27

Family

ID=16087562

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18068880A Granted JPS57105832A (en) 1980-12-19 1980-12-19 Detector for optical position

Country Status (1)

Country Link
JP (1) JPS57105832A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5982336U (ja) * 1982-11-24 1984-06-04 株式会社東芝 光デイスク検査装置
JPS6020025U (ja) * 1983-07-15 1985-02-12 日東光学株式会社 光デイスクの信号検出用スプリツタ−
JPS6040031U (ja) * 1983-08-25 1985-03-20 日東光学株式会社 光デイスクの信号検出用スプリツタ−
US5161139A (en) * 1989-01-06 1992-11-03 Kabushiki Kaisha Toshiba Focusing error detecting apparatus
KR100547211B1 (ko) * 1997-12-25 2006-04-10 소니 가부시끼 가이샤 광학 픽업 및 광 디스크 장치

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5982336U (ja) * 1982-11-24 1984-06-04 株式会社東芝 光デイスク検査装置
JPS6020025U (ja) * 1983-07-15 1985-02-12 日東光学株式会社 光デイスクの信号検出用スプリツタ−
JPS6040031U (ja) * 1983-08-25 1985-03-20 日東光学株式会社 光デイスクの信号検出用スプリツタ−
US5161139A (en) * 1989-01-06 1992-11-03 Kabushiki Kaisha Toshiba Focusing error detecting apparatus
KR100547211B1 (ko) * 1997-12-25 2006-04-10 소니 가부시끼 가이샤 광학 픽업 및 광 디스크 장치

Also Published As

Publication number Publication date
JPS6331858B2 (enrdf_load_stackoverflow) 1988-06-27

Similar Documents

Publication Publication Date Title
JPS5752006A (en) Method and device for detecting focus
JPS5753832A (en) Method and device for recording of optical information
JPS5753831A (en) Method and device for reproduction of optical information
JPS5752005A (en) Focus detecting method
DK331788D0 (da) Optisk system til bestemmelse af forandringen i krumningen af et objekt paa et lille omraade
JPS57105832A (en) Detector for optical position
SU1382410A3 (ru) Оптический датчик с автоматической системой регулировани объектива
JPS57105831A (en) Detector for optical position
JPS5746334A (en) Optical information reproducer
JPS5744236A (en) Optical information reproducer
JPS56133704A (en) Focus error detector
JPS57103009A (en) Optical position detector
JPS57103008A (en) Optical position detector
JPS57127935A (en) Pickup device
JPS5766535A (en) Focus detector
JPS5727444A (en) Focus detector
JPS5750334A (en) Optical recorder and reproducer
JPS573234A (en) Optical recorder and reproducer
JPS644927A (en) Automatic focusing system
JPS5788535A (en) Pickup device
JPS5733443A (en) Focus detector
JPS57198547A (en) Optical information processor
JPS5738404A (en) Method and device for detection of focal point
JPS5764712A (en) Detector for focusing position
JPS6489042A (en) Focus error detector