JPS6419941U - - Google Patents
Info
- Publication number
- JPS6419941U JPS6419941U JP11275787U JP11275787U JPS6419941U JP S6419941 U JPS6419941 U JP S6419941U JP 11275787 U JP11275787 U JP 11275787U JP 11275787 U JP11275787 U JP 11275787U JP S6419941 U JPS6419941 U JP S6419941U
- Authority
- JP
- Japan
- Prior art keywords
- value
- projection
- photo sensor
- film
- comparing
- 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
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11275787U JPS6419941U (ro) | 1987-07-24 | 1987-07-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11275787U JPS6419941U (ro) | 1987-07-24 | 1987-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6419941U true JPS6419941U (ro) | 1989-01-31 |
Family
ID=31351986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11275787U Pending JPS6419941U (ro) | 1987-07-24 | 1987-07-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6419941U (ro) |
-
1987
- 1987-07-24 JP JP11275787U patent/JPS6419941U/ja active Pending
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