JPS63153247U - - Google Patents
Info
- Publication number
- JPS63153247U JPS63153247U JP1987046180U JP4618087U JPS63153247U JP S63153247 U JPS63153247 U JP S63153247U JP 1987046180 U JP1987046180 U JP 1987046180U JP 4618087 U JP4618087 U JP 4618087U JP S63153247 U JPS63153247 U JP S63153247U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- total reflection
- sides
- screen
- lens unit
- 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
- 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 |
|---|---|---|---|
| JP1987046180U JPH0414743Y2 (fr) | 1987-03-28 | 1987-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987046180U JPH0414743Y2 (fr) | 1987-03-28 | 1987-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63153247U true JPS63153247U (fr) | 1988-10-07 |
| JPH0414743Y2 JPH0414743Y2 (fr) | 1992-04-02 |
Family
ID=30865604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987046180U Expired JPH0414743Y2 (fr) | 1987-03-28 | 1987-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0414743Y2 (fr) |
-
1987
- 1987-03-28 JP JP1987046180U patent/JPH0414743Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0414743Y2 (fr) | 1992-04-02 |