JPH0248941U - - Google Patents
Info
- Publication number
- JPH0248941U JPH0248941U JP12887688U JP12887688U JPH0248941U JP H0248941 U JPH0248941 U JP H0248941U JP 12887688 U JP12887688 U JP 12887688U JP 12887688 U JP12887688 U JP 12887688U JP H0248941 U JPH0248941 U JP H0248941U
- Authority
- JP
- Japan
- Prior art keywords
- film
- light
- sensor
- projector
- replacing
- 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
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Description
第１図は本考案の一実施例の斜視図である。
１……フイルム載台、２……フイルムセンサ、
３……減光フイルタ駆動部、４……減光フイルタ
。
FIG. 1 is a perspective view of an embodiment of the present invention. 1...Film mounting stand, 2...Film sensor,
3...Darkness filter drive unit, 4...Darkness filter.
Claims (1)
部分にフイルムセンサを設け、フイルムの該当部
分に貼られた反射テープから前記フイルムセンサ
への光の反射を利用してフイルムの有無を検出し
、フイルムを交換するときの光の量を調整するよ
うに構成したことを特徴とするオーバーヘツド・
プロジエクタ。 A film sensor is provided at a portion of the film mounting table corresponding to the corner of the film, and the presence or absence of the film is detected by using the reflection of light from the reflective tape attached to the corresponding portion of the film to the film sensor. Overhead device characterized by being configured to adjust the amount of light when replacing.
projector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12887688U JPH0248941U (en) | 1988-09-30 | 1988-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12887688U JPH0248941U (en) | 1988-09-30 | 1988-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0248941U true JPH0248941U (en) | 1990-04-05 |
Family
ID=31382624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12887688U Pending JPH0248941U (en) | 1988-09-30 | 1988-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0248941U (en) |
-
1988
- 1988-09-30 JP JP12887688U patent/JPH0248941U/ja active Pending
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