JPH01177701U - - Google Patents

Info

Publication number
JPH01177701U
JPH01177701U JP7576288U JP7576288U JPH01177701U JP H01177701 U JPH01177701 U JP H01177701U JP 7576288 U JP7576288 U JP 7576288U JP 7576288 U JP7576288 U JP 7576288U JP H01177701 U JPH01177701 U JP H01177701U
Authority
JP
Japan
Prior art keywords
aspherical lens
fresnel
crushing
thinner
utility
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
JP7576288U
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 JP7576288U priority Critical patent/JPH01177701U/ja
Publication of JPH01177701U publication Critical patent/JPH01177701U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Lenses (AREA)
  • Overhead Projectors And Projection Screens (AREA)
JP7576288U 1988-06-07 1988-06-07 Pending JPH01177701U (US20020095090A1-20020718-M00002.png)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7576288U JPH01177701U (US20020095090A1-20020718-M00002.png) 1988-06-07 1988-06-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7576288U JPH01177701U (US20020095090A1-20020718-M00002.png) 1988-06-07 1988-06-07

Publications (1)

Publication Number Publication Date
JPH01177701U true JPH01177701U (US20020095090A1-20020718-M00002.png) 1989-12-19

Family

ID=31300818

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7576288U Pending JPH01177701U (US20020095090A1-20020718-M00002.png) 1988-06-07 1988-06-07

Country Status (1)

Country Link
JP (1) JPH01177701U (US20020095090A1-20020718-M00002.png)

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