JPH0361614U - - Google Patents

Info

Publication number
JPH0361614U
JPH0361614U JP12280089U JP12280089U JPH0361614U JP H0361614 U JPH0361614 U JP H0361614U JP 12280089 U JP12280089 U JP 12280089U JP 12280089 U JP12280089 U JP 12280089U JP H0361614 U JPH0361614 U JP H0361614U
Authority
JP
Japan
Prior art keywords
split photodetector
light
parabolic mirror
defocus detection
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.)
Pending
Application number
JP12280089U
Other languages
English (en)
Japanese (ja)
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 filed Critical
Priority to JP12280089U priority Critical patent/JPH0361614U/ja
Publication of JPH0361614U publication Critical patent/JPH0361614U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Head (AREA)
  • Optical Recording Or Reproduction (AREA)
JP12280089U 1989-10-20 1989-10-20 Pending JPH0361614U (US07179912-20070220-C00144.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12280089U JPH0361614U (US07179912-20070220-C00144.png) 1989-10-20 1989-10-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12280089U JPH0361614U (US07179912-20070220-C00144.png) 1989-10-20 1989-10-20

Publications (1)

Publication Number Publication Date
JPH0361614U true JPH0361614U (US07179912-20070220-C00144.png) 1991-06-17

Family

ID=31670794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12280089U Pending JPH0361614U (US07179912-20070220-C00144.png) 1989-10-20 1989-10-20

Country Status (1)

Country Link
JP (1) JPH0361614U (US07179912-20070220-C00144.png)

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