JPH0512770B2 - - Google Patents

Info

Publication number
JPH0512770B2
JPH0512770B2 JP16307186A JP16307186A JPH0512770B2 JP H0512770 B2 JPH0512770 B2 JP H0512770B2 JP 16307186 A JP16307186 A JP 16307186A JP 16307186 A JP16307186 A JP 16307186A JP H0512770 B2 JPH0512770 B2 JP H0512770B2
Authority
JP
Japan
Prior art keywords
light
light beam
head device
diffraction grating
diffraction
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
JP16307186A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6320727A (ja
Inventor
Hidekazu Tode
Shinsuke Shikama
Mitsushige Kondo
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 JP61163071A priority Critical patent/JPS6320727A/ja
Priority to KR1019870006080A priority patent/KR900008380B1/ko
Priority to US07/066,009 priority patent/US4817072A/en
Priority to FR878709137A priority patent/FR2601174B1/fr
Publication of JPS6320727A publication Critical patent/JPS6320727A/ja
Publication of JPH0512770B2 publication Critical patent/JPH0512770B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP61163071A 1986-07-01 1986-07-11 光学式ヘツド装置 Granted JPS6320727A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP61163071A JPS6320727A (ja) 1986-07-11 1986-07-11 光学式ヘツド装置
KR1019870006080A KR900008380B1 (ko) 1986-07-01 1987-06-16 광학식 헤드장치
US07/066,009 US4817072A (en) 1986-07-01 1987-06-24 Optical head utilizing diffraction grating
FR878709137A FR2601174B1 (fr) 1986-07-01 1987-06-29 Dispositif formant tete de type optique, notamment pour l'enregistrement et la lecture de donnees.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61163071A JPS6320727A (ja) 1986-07-11 1986-07-11 光学式ヘツド装置

Publications (2)

Publication Number Publication Date
JPS6320727A JPS6320727A (ja) 1988-01-28
JPH0512770B2 true JPH0512770B2 (enrdf_load_stackoverflow) 1993-02-18

Family

ID=15766627

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61163071A Granted JPS6320727A (ja) 1986-07-01 1986-07-11 光学式ヘツド装置

Country Status (1)

Country Link
JP (1) JPS6320727A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5233444A (en) * 1989-07-25 1993-08-03 Olympus Optical Co., Ltd. Focus error detecting apparatus
JP4683704B2 (ja) 2000-10-23 2011-05-18 東芝エレベータ株式会社 乗客コンベア装置

Also Published As

Publication number Publication date
JPS6320727A (ja) 1988-01-28

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term