JPS6462828A - Optical head - Google Patents

Optical head

Info

Publication number
JPS6462828A
JPS6462828A JP21947887A JP21947887A JPS6462828A JP S6462828 A JPS6462828 A JP S6462828A JP 21947887 A JP21947887 A JP 21947887A JP 21947887 A JP21947887 A JP 21947887A JP S6462828 A JPS6462828 A JP S6462828A
Authority
JP
Japan
Prior art keywords
light
receiving element
incident
optical head
detecting
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.)
Pending
Application number
JP21947887A
Other languages
Japanese (ja)
Inventor
Osamu Nakamura
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 JP21947887A priority Critical patent/JPS6462828A/en
Publication of JPS6462828A publication Critical patent/JPS6462828A/en
Pending legal-status Critical Current

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)

Abstract

PURPOSE:To delete the light emitting part for detecting a position by providing a reflecting mirror to reflect a part of a laser light for the writing or reading of the information on an optical medium and make incident through a position scale fixed to the base of an optical disk device onto a light-receiving element for detecting the position. CONSTITUTION:A laser light 23 bent in a right-angled direction by a reflecting mirror 9 in the direction of travel passes through a hole 13 provided at a head case 21, passes through a pattern written on a position scale 12 fixed in parallel to an optical head moving direction to an optical disk device, and thereafter, the light in made incident on a light-receiving element 14 provided at a light- receiving part 11. Thus, when the optical head 20 is moved by a driving means, the incident place for the position scale 12 of the laser light 23 is moved and thus, the incident light to the light-receiving element 14 is changed. Here, the output in accordance with the fluctuation of the pattern can be detected from the light-receiving element 14, the detecting output is used and the position of the optical head 20 can be known.
JP21947887A 1987-09-01 1987-09-01 Optical head Pending JPS6462828A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21947887A JPS6462828A (en) 1987-09-01 1987-09-01 Optical head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21947887A JPS6462828A (en) 1987-09-01 1987-09-01 Optical head

Publications (1)

Publication Number Publication Date
JPS6462828A true JPS6462828A (en) 1989-03-09

Family

ID=16736064

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21947887A Pending JPS6462828A (en) 1987-09-01 1987-09-01 Optical head

Country Status (1)

Country Link
JP (1) JPS6462828A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04177620A (en) * 1990-11-09 1992-06-24 Nec Home Electron Ltd Optical disc apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04177620A (en) * 1990-11-09 1992-06-24 Nec Home Electron Ltd Optical disc apparatus

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