JPH03129948U - - Google Patents
Info
- Publication number
- JPH03129948U JPH03129948U JP3704690U JP3704690U JPH03129948U JP H03129948 U JPH03129948 U JP H03129948U JP 3704690 U JP3704690 U JP 3704690U JP 3704690 U JP3704690 U JP 3704690U JP H03129948 U JPH03129948 U JP H03129948U
- Authority
- JP
- Japan
- Prior art keywords
- screen plate
- screen
- outer periphery
- flange portion
- sensor
- 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
- 230000003287 optical effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3704690U JPH03129948U (fr) | 1990-04-06 | 1990-04-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3704690U JPH03129948U (fr) | 1990-04-06 | 1990-04-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03129948U true JPH03129948U (fr) | 1991-12-26 |
Family
ID=31543809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3704690U Pending JPH03129948U (fr) | 1990-04-06 | 1990-04-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03129948U (fr) |
-
1990
- 1990-04-06 JP JP3704690U patent/JPH03129948U/ja active Pending