JPH01138212U - - Google Patents

Info

Publication number
JPH01138212U
JPH01138212U JP3106388U JP3106388U JPH01138212U JP H01138212 U JPH01138212 U JP H01138212U JP 3106388 U JP3106388 U JP 3106388U JP 3106388 U JP3106388 U JP 3106388U JP H01138212 U JPH01138212 U JP H01138212U
Authority
JP
Japan
Prior art keywords
photodetector
objective lens
optical
circular portion
light
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
JP3106388U
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 JP3106388U priority Critical patent/JPH01138212U/ja
Publication of JPH01138212U publication Critical patent/JPH01138212U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP3106388U 1988-03-09 1988-03-09 Pending JPH01138212U (US20030157376A1-20030821-M00001.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3106388U JPH01138212U (US20030157376A1-20030821-M00001.png) 1988-03-09 1988-03-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3106388U JPH01138212U (US20030157376A1-20030821-M00001.png) 1988-03-09 1988-03-09

Publications (1)

Publication Number Publication Date
JPH01138212U true JPH01138212U (US20030157376A1-20030821-M00001.png) 1989-09-21

Family

ID=31256654

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3106388U Pending JPH01138212U (US20030157376A1-20030821-M00001.png) 1988-03-09 1988-03-09

Country Status (1)

Country Link
JP (1) JPH01138212U (US20030157376A1-20030821-M00001.png)

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