JPH0324645U - - Google Patents
Info
- Publication number
- JPH0324645U JPH0324645U JP8473989U JP8473989U JPH0324645U JP H0324645 U JPH0324645 U JP H0324645U JP 8473989 U JP8473989 U JP 8473989U JP 8473989 U JP8473989 U JP 8473989U JP H0324645 U JPH0324645 U JP H0324645U
- Authority
- JP
- Japan
- Prior art keywords
- mirror
- screen
- projection
- detection means
- overhead projector
- 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 description 6
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 1
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Overhead Projectors And Projection Screens (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Description
第１図ないし第１０図は本考案によるオーバヘ
ツドプロジエクタ装置の一実施例を示す図であり
、第１図はオーバヘツドプロジエクタ装置の構成
図、第２図は原稿台駆動部の構成図、第３図はキ
ーストン効果の説明図、第４図は反射ミラーを反
時計方向に回動させてミラー角度を変化させたと
きの要部構成図、第５図は原稿画像の投影倍率の
説明図、第６図は二次原稿画像の各位置における
倍率の変化を示すグラフ、第７図は角度センサを
備えたミラーブラケツトの拡大側面図、第８図は
測距装置の概念図、第９図はオーバヘツドプロジ
エクタ装置全体のブロツク図、第１０図は二次原
稿の作成手順を示すフローチヤートである。
１…サーモクロミツクフイルム、９…一次原稿
、１４…サーマルヘツド（二次原稿作成手段）、
１７…イメージセンサ（読取り手段）、２２…投
影レンズ、２３…反射ミラー（投影ミラー）、２
５…スクリーン、３０…角度センサ（ミラー角度
検出手段）、３５…測距装置（倍率検出手段）。
1 to 10 are diagrams showing one embodiment of the overhead projector device according to the present invention, FIG. 1 is a block diagram of the overhead projector device, and FIG. 2 is a block diagram of the document table drive section. , Figure 3 is an explanatory diagram of the keystone effect, Figure 4 is a diagram of the main part configuration when the mirror angle is changed by rotating the reflecting mirror counterclockwise, and Figure 5 is an explanation of the projection magnification of the original image. Fig. 6 is a graph showing changes in magnification at each position of the secondary original image, Fig. 7 is an enlarged side view of a mirror bracket equipped with an angle sensor, Fig. 8 is a conceptual diagram of the distance measuring device, and Fig. 9 The figure is a block diagram of the entire overhead projector apparatus, and FIG. 10 is a flowchart showing the procedure for creating a secondary manuscript. 1... Thermochromic film, 9... Primary manuscript, 14... Thermal head (secondary manuscript creation means),
17... Image sensor (reading means), 22... Projection lens, 23... Reflection mirror (projection mirror), 2
5...Screen, 30...Angle sensor (mirror angle detection means), 35...Distance measuring device (magnification detection means).
Claims (1)
ーで反射してスクリーン上へ投影するオーバヘツ
ドプロジエクタ装置において、一次原稿の画像を
読取る読取手段と、前記投影レンズの光軸と前記
投影ミラーとのなすミラー角度の変化を検出する
ミラー角度検出手段と、前記スクリーン上の投影
倍率を検出する倍率検出手段と、前記読取手段か
らの信号により作成する二次原稿を前記ミラー角
度検出手段および倍率検出手段からの信号により
前記スクリーン上の画面の歪を補正しながら作成
する二次原稿作成手段とを備えたことを特徴とす
るオーバヘツドプロジエクタ装置。 In an overhead projector device that reflects light from an original that has passed through a projection lens on a projection mirror and projects it onto a screen, there is provided a reading means for reading an image of a primary original, and a link between an optical axis of the projection lens and the projection mirror. mirror angle detection means for detecting changes in the mirror angle formed; magnification detection means for detecting the projection magnification on the screen; and the mirror angle detection means and magnification detection means for creating a secondary original based on a signal from the reading means. an overhead projector apparatus, comprising means for creating a secondary original while correcting the distortion of the screen on the screen using signals from the overhead projector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8473989U JPH0324645U (en) | 1989-07-19 | 1989-07-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8473989U JPH0324645U (en) | 1989-07-19 | 1989-07-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0324645U true JPH0324645U (en) | 1991-03-14 |
Family
ID=31633414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8473989U Pending JPH0324645U (en) | 1989-07-19 | 1989-07-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0324645U (en) |
-
1989
- 1989-07-19 JP JP8473989U patent/JPH0324645U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5926362Y2 (en) | Exposure aperture in image scanning recording device | |
| JPS6318723B2 (en) | ||
| JPH0324645U (en) | ||
| JPS61232763A (en) | Device for correcting light quantity nonuniformity of copying optical system | |
| JPH0455318Y2 (en) | ||
| JPS62201738U (en) | ||
| JPH0461960U (en) | ||
| JPS5888661U (en) | video copy device | |
| JPS63135355U (en) | ||
| JPS6311631Y2 (en) | ||
| JPS63187468U (en) | ||
| JPS6263753U (en) | ||
| JPS6424337U (en) | ||
| JPH0344369U (en) | ||
| JPH02126153U (en) | ||
| JPH0436363U (en) | ||
| JPH0378368A (en) | Image reading device | |
| JPH01171342U (en) | ||
| JPH0253048U (en) | ||
| JPS5955748U (en) | electronic copy machine | |
| JPS6349540U (en) | ||
| JPH0392028U (en) | ||
| JPH02181114A (en) | Image processor | |
| JPS6326175U (en) | ||
| JPH03114836U (en) |