JPH0197327U - - Google Patents
Info
- Publication number
- JPH0197327U JPH0197327U JP1987193371U JP19337187U JPH0197327U JP H0197327 U JPH0197327 U JP H0197327U JP 1987193371 U JP1987193371 U JP 1987193371U JP 19337187 U JP19337187 U JP 19337187U JP H0197327 U JPH0197327 U JP H0197327U
- Authority
- JP
- Japan
- Prior art keywords
- lens sheet
- approximate spherical
- close contact
- spherical surface
- spherical shape
- 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
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000031700 light absorption Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
- Transforming Electric Information Into Light Information (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987193371U JPH0197327U (th) | 1987-12-18 | 1987-12-18 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987193371U JPH0197327U (th) | 1987-12-18 | 1987-12-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0197327U true JPH0197327U (th) | 1989-06-28 |
Family
ID=31484165
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987193371U Pending JPH0197327U (th) | 1987-12-18 | 1987-12-18 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0197327U (th) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6061738A (ja) * | 1983-09-16 | 1985-04-09 | Hitachi Ltd | 背面投写装置におけるスクリ−ン |
-
1987
- 1987-12-18 JP JP1987193371U patent/JPH0197327U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6061738A (ja) * | 1983-09-16 | 1985-04-09 | Hitachi Ltd | 背面投写装置におけるスクリ−ン |