JPS63132944U - - Google Patents
Info
- Publication number
- JPS63132944U JPS63132944U JP1987022845U JP2284587U JPS63132944U JP S63132944 U JPS63132944 U JP S63132944U JP 1987022845 U JP1987022845 U JP 1987022845U JP 2284587 U JP2284587 U JP 2284587U JP S63132944 U JPS63132944 U JP S63132944U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- viewer
- convex toward
- cylindrical face
- face piece
- 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 3
Landscapes
- Overhead Projectors And Projection Screens (AREA)
- Transforming Electric Information Into Light Information (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987022845U JPS63132944U (en:Method) | 1987-02-20 | 1987-02-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987022845U JPS63132944U (en:Method) | 1987-02-20 | 1987-02-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63132944U true JPS63132944U (en:Method) | 1988-08-31 |
Family
ID=30820614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987022845U Pending JPS63132944U (en:Method) | 1987-02-20 | 1987-02-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63132944U (en:Method) |
-
1987
- 1987-02-20 JP JP1987022845U patent/JPS63132944U/ja active Pending