JPS61175500U - - Google Patents
Info
- Publication number
- JPS61175500U JPS61175500U JP6011985U JP6011985U JPS61175500U JP S61175500 U JPS61175500 U JP S61175500U JP 6011985 U JP6011985 U JP 6011985U JP 6011985 U JP6011985 U JP 6011985U JP S61175500 U JPS61175500 U JP S61175500U
- Authority
- JP
- Japan
- Prior art keywords
- forming
- symbol
- pattern
- reflective film
- fresnel lens
- 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
Links
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Lenses (AREA)
- Optical Elements Other Than Lenses (AREA)
- Overhead Projectors And Projection Screens (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6011985U JPS61175500U (th) | 1985-04-22 | 1985-04-22 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6011985U JPS61175500U (th) | 1985-04-22 | 1985-04-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61175500U true JPS61175500U (th) | 1986-11-01 |
Family
ID=30587173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6011985U Pending JPS61175500U (th) | 1985-04-22 | 1985-04-22 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61175500U (th) |
-
1985
- 1985-04-22 JP JP6011985U patent/JPS61175500U/ja active Pending