JPH0197328U - - Google Patents
Info
- Publication number
- JPH0197328U JPH0197328U JP1987193471U JP19347187U JPH0197328U JP H0197328 U JPH0197328 U JP H0197328U JP 1987193471 U JP1987193471 U JP 1987193471U JP 19347187 U JP19347187 U JP 19347187U JP H0197328 U JPH0197328 U JP H0197328U
- Authority
- JP
- Japan
- Prior art keywords
- screen
- lens
- total reflection
- back side
- angle
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987193471U JPH0455315Y2 (me) | 1987-12-22 | 1987-12-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987193471U JPH0455315Y2 (me) | 1987-12-22 | 1987-12-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0197328U true JPH0197328U (me) | 1989-06-28 |
| JPH0455315Y2 JPH0455315Y2 (me) | 1992-12-25 |
Family
ID=31484258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987193471U Expired JPH0455315Y2 (me) | 1987-12-22 | 1987-12-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0455315Y2 (me) |
-
1987
- 1987-12-22 JP JP1987193471U patent/JPH0455315Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0455315Y2 (me) | 1992-12-25 |