JPS63170835U - - Google Patents
Info
- Publication number
- JPS63170835U JPS63170835U JP1987064856U JP6485687U JPS63170835U JP S63170835 U JPS63170835 U JP S63170835U JP 1987064856 U JP1987064856 U JP 1987064856U JP 6485687 U JP6485687 U JP 6485687U JP S63170835 U JPS63170835 U JP S63170835U
- Authority
- JP
- Japan
- Prior art keywords
- fresnel lens
- screen
- entire screen
- driving
- movably
- 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 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Description
第１図ａ，ｂは本考案の一実施例に係る透過型
プロジエクタを表すものであつて同図ａは一部断
面を有する正面図、同図ｂは同図ａにおける側断
面図、第２図は上記透過型プロジエクタに用いる
ことのできる制御手段の信号の流れを表すブロツ
ク図、第３図は上記制御手段の回路図、第４図は
従来の透過型プロジエクタの要部側断面図である
。
符号の説明、１……レンチキユラーレンズ、２
……フレンネルレンズ、２ａ……中心部、３……
スクリーン、５……投光器、Ｂ……透過型プロジ
エクタ、Ｃ……支持手段、Ｄ……駆動手段、Ｅ…
…制御手段。
1A and 1B show a transmission type projector according to an embodiment of the present invention, in which FIG. 1A is a front view with a partial cross section, FIG. The figure is a block diagram showing the signal flow of the control means that can be used in the above-mentioned transmission type projector, Fig. 3 is a circuit diagram of the above-mentioned control means, and Fig. 4 is a side sectional view of the main part of the conventional transmission-type projector. . Explanation of symbols, 1... Lenticular lens, 2
...Fresnel lens, 2a...center, 3...
Screen, 5... Light projector, B... Transmissive projector, C... Support means, D... Drive means, E...
...control means.
Claims (1)
心部に集めるフレンネルレンズとからなり投光器
に対向配備されるスクリーンを有する透過型プロ
ジエクタにおいて、 上記スクリーン全体若しくはフレンネルレンズ
を移動可能に支持する支持手段と、 上記スクリーン全体若しくはフレンネルレンズ
を移動駆動する駆動手段と、 上記駆動手段で移動駆動される上記スクリーン
全体若しくはフレンネルレンズの移動方向を表示
すると共に、移動可能領域の限界位置に達する該
スクリーン全体若しくはフレンネルレンズを検知
した時、上記駆動手段を停止する制御手段とを具
備してなることを特徴とする透過型プロジエクタ
。[Claims for Utility Model Registration] In a transmission type projector having a screen that is arranged opposite to a projector and is composed of a lenticular lens that diffuses light and a Fresnel lens that focuses light in the center, the entire screen or the Fresnel lens a supporting means for movably supporting the screen; a driving means for movably driving the entire screen or the Fresnel lens; and a driving means for movably driving the entire screen or the Fresnel lens; A transmission type projector comprising: a control means for stopping the driving means when the entire screen or the Fresnel lens reaches a limit position of the area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987064856U JPS63170835U (en) | 1987-04-27 | 1987-04-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987064856U JPS63170835U (en) | 1987-04-27 | 1987-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63170835U true JPS63170835U (en) | 1988-11-07 |
Family
ID=30901396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987064856U Pending JPS63170835U (en) | 1987-04-27 | 1987-04-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63170835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04130879A (en) * | 1990-09-21 | 1992-05-01 | Fujitsu General Ltd | Image display screen device |
-
1987
- 1987-04-27 JP JP1987064856U patent/JPS63170835U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04130879A (en) * | 1990-09-21 | 1992-05-01 | Fujitsu General Ltd | Image display screen device |