JPS646629U - - Google Patents
Info
- Publication number
- JPS646629U JPS646629U JP10057487U JP10057487U JPS646629U JP S646629 U JPS646629 U JP S646629U JP 10057487 U JP10057487 U JP 10057487U JP 10057487 U JP10057487 U JP 10057487U JP S646629 U JPS646629 U JP S646629U
- Authority
- JP
- Japan
- Prior art keywords
- prism
- prism lens
- lens sheet
- transmission screen
- utility
- 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 4
- 230000003287 optical effect Effects 0.000 claims 2
- 239000000758 substrate Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000002349 favourable effect Effects 0.000 description 2
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10057487U JPS646629U (zh) | 1987-06-30 | 1987-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10057487U JPS646629U (zh) | 1987-06-30 | 1987-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS646629U true JPS646629U (zh) | 1989-01-13 |
Family
ID=31328772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10057487U Pending JPS646629U (zh) | 1987-06-30 | 1987-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS646629U (zh) |
-
1987
- 1987-06-30 JP JP10057487U patent/JPS646629U/ja active Pending
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