JPS63153248U - - Google Patents
Info
- Publication number
- JPS63153248U JPS63153248U JP1987046181U JP4618187U JPS63153248U JP S63153248 U JPS63153248 U JP S63153248U JP 1987046181 U JP1987046181 U JP 1987046181U JP 4618187 U JP4618187 U JP 4618187U JP S63153248 U JPS63153248 U JP S63153248U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- outer edge
- total reflection
- screen
- sides
- 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
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987046181U JPS63153248U (da) | 1987-03-28 | 1987-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987046181U JPS63153248U (da) | 1987-03-28 | 1987-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63153248U true JPS63153248U (da) | 1988-10-07 |
Family
ID=30865606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987046181U Pending JPS63153248U (da) | 1987-03-28 | 1987-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63153248U (da) |
-
1987
- 1987-03-28 JP JP1987046181U patent/JPS63153248U/ja active Pending