JPH01151420U - - Google Patents

Info

Publication number
JPH01151420U
JPH01151420U JP4631388U JP4631388U JPH01151420U JP H01151420 U JPH01151420 U JP H01151420U JP 4631388 U JP4631388 U JP 4631388U JP 4631388 U JP4631388 U JP 4631388U JP H01151420 U JPH01151420 U JP H01151420U
Authority
JP
Japan
Prior art keywords
photodetector
focus error
push
difference
outputs
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
JP4631388U
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 JP4631388U priority Critical patent/JPH01151420U/ja
Publication of JPH01151420U publication Critical patent/JPH01151420U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP4631388U 1988-04-06 1988-04-06 Pending JPH01151420U (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4631388U JPH01151420U (enrdf_load_stackoverflow) 1988-04-06 1988-04-06

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4631388U JPH01151420U (enrdf_load_stackoverflow) 1988-04-06 1988-04-06

Publications (1)

Publication Number Publication Date
JPH01151420U true JPH01151420U (enrdf_load_stackoverflow) 1989-10-19

Family

ID=31272583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4631388U Pending JPH01151420U (enrdf_load_stackoverflow) 1988-04-06 1988-04-06

Country Status (1)

Country Link
JP (1) JPH01151420U (enrdf_load_stackoverflow)

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