JPH01316791A - Enlargement projection system - Google Patents

Enlargement projection system

Info

Publication number
JPH01316791A
JPH01316791A JP63149554A JP14955488A JPH01316791A JP H01316791 A JPH01316791 A JP H01316791A JP 63149554 A JP63149554 A JP 63149554A JP 14955488 A JP14955488 A JP 14955488A JP H01316791 A JPH01316791 A JP H01316791A
Authority
JP
Japan
Prior art keywords
image
liquid crystal
crystal display
control circuit
crt
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
Application number
JP63149554A
Other languages
Japanese (ja)
Inventor
Mutsutake Sayanagi
佐▲やなぎ▼　輯武
Yoshiyuki Ikeda
池田　佳之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
NEC Robotics Engineering Ltd
Original Assignee
NEC Corp
NEC Robotics Engineering Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp, NEC Robotics Engineering Ltd filed Critical NEC Corp
Priority to JP63149554A priority Critical patent/JPH01316791A/en
Publication of JPH01316791A publication Critical patent/JPH01316791A/en
Pending legal-status Critical Current

Links

Landscapes

  • Overhead Projectors And Projection Screens (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PURPOSE:To easily generate, correct, and edit an image to be enlarged and projected by a personal computer by incorporating a liquid crystal display plate and its control circuit on a Fresnel mirror. CONSTITUTION:Image inputted from an image input device 10, keyboard 11, tablet 12, or mouse 13 is displayed and edited on a CRT 9 by the personal computer 8. When information similar to said information sent to the CRT 9 is sent to an image control circuit 4, the image control circuit 4 receives the information and displays an image similar to the image displayed on the CRT 9 on the liquid crystal plate 1. Light emitted by a light source 5 is reflected by the Fresnel mirror 2 and transmitted through the liquid crystal display plate 1 to reach an optical lens 6. The transmitted light which reaches the optical lens 6 is enlarged and projected on the screen through a projection mirror 7. Consequently, the image is easily corrected and edited.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は拡大投影方式に関し、特に、オーバーへラドプ
ロジェクタのフレネルミラー上に液晶表示板を装備する
ように改良した拡大投影方式に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an enlarged projection method, and more particularly to an enlarged projection method improved by equipping a Fresnel mirror of an overherad projector with a liquid crystal display panel.

〔従来の技術〕[Conventional technology]

従来の拡大投影方式の一つとして、プレゼンテーション
等で使用されるオーバー・ヘッド・プロジェクタ−（以
下、ＯＨＰと記す）は、光源からの光線を間接的に、プ
ラスティック製のフィルムに投じ、そこからの透過光線
を光学レンズで拡大し、スクリーンなどに投影するもの
であった。An overhead projector (hereinafter referred to as OHP) used in presentations, etc., is one of the conventional enlarged projection methods.The overhead projector (hereinafter referred to as OHP) is used for presentations, etc., which indirectly projects light from a light source onto a plastic film. The transmitted light was magnified using an optical lens and projected onto a screen.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

上述した従来のＯＨＰでは、拡大投影される画像は、プ
ラスティック製のフィルムの上に印刷あるいはインクな
どで描画されたものであり、修正や複製の作成が難しか
った。また、これらのフィルムは表面の接触や摩擦に対
して弱く、保存や取扱いに注意が必要であるなどの欠点
がある。In the above-mentioned conventional OHP, the image to be enlarged and projected is printed or drawn with ink on a plastic film, making it difficult to modify or create a copy. Furthermore, these films have drawbacks such as being sensitive to surface contact and friction and requiring care in storage and handling.

〔課題を解決するための手段〕[Means to solve the problem]

本発明の拡大投影方式は、フレネルミラーと、このフレ
ネルミラーの上に配置した液晶表示板と、入力された情
報の前記液晶表示板への表示を制御する画像制御回路と
、前記液晶表示板の表示を拡大投影する光学系とを具備
することを特徴とする。The enlarged projection method of the present invention includes a Fresnel mirror, a liquid crystal display board disposed on the Fresnel mirror, an image control circuit that controls the display of input information on the liquid crystal display board, and a It is characterized by comprising an optical system for enlarging and projecting a display.

〔実施例〕〔Example〕

次に本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

第１図は本発明の一実施例のブロック図、第２図、第３
図は第１図中のＯＨＰを示す断面図９平面図である。FIG. 1 is a block diagram of one embodiment of the present invention, FIG.
This figure is a cross-sectional view 9 and a plan view showing the OHP in FIG. 1.

第２図において、このＯＨＰは液晶表示板１とフレネル
ミラー２を設けている。また、第１図に、液晶表示板１
と画像制御回路４とパーソナルコンピュータ８、ＣＲＴ
９．画像入力装置１０゜キーボード１１．タブレット１
２．マウス１３゜プリンタ１４を使ったシステムのブロ
ック図を示す。In FIG. 2, this OHP is provided with a liquid crystal display panel 1 and a Fresnel mirror 2. In addition, FIG. 1 shows a liquid crystal display board 1.
and image control circuit 4, personal computer 8, CRT
9. Image input device 10°keyboard 11. Tablet 1
2. A block diagram of a system using a mouse 13° printer 14 is shown.

次に動作について第１図により説明する６画像入力装置
１０．キーボード１１．タブレット１２、マウス１３か
ら入力された情報はＣＲＴＱ上で表示１編集される。こ
のＣＲＴ９に送られるのと同様の情報が画像制御回路４
に送られると、画像制御回路４はその情報を受けとって
液晶表示板１に、ＣＲＴ９に表示されているのと同様の
画像を表示する。光源５から発した光はフレネルミラー
２で反射され、液晶表示板１を透過して、光学レンズ６
に達する。光学レンズ６に達した透過光線は映写ミラー
７を介してスクリーン上に拡大投影される。Next, the operation of the six image input devices 10 will be explained with reference to FIG. Keyboard 11. Information input from the tablet 12 and mouse 13 is displayed and edited on the CRTQ. Information similar to that sent to this CRT 9 is sent to the image control circuit 4.
, the image control circuit 4 receives the information and displays on the liquid crystal display panel 1 an image similar to that displayed on the CRT 9. The light emitted from the light source 5 is reflected by the Fresnel mirror 2, transmitted through the liquid crystal display panel 1, and then passed through the optical lens 6.
reach. The transmitted light beam reaching the optical lens 6 is enlarged and projected onto a screen via a projection mirror 7.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明はＯＨＰのフレネルミラー上
に液晶表示板及びその制御回路を内蔵する事により、拡
大投影する画像をパーソナルコンピュータで作成及び修
正１編集が容易にでき、画像を動画にする事も可能とな
る。また、フロッピーディスクなどの記憶装置に情報を
記録する事により保存が容易になり、他のフロッピーデ
ィスクへの複製の作製やパーソナルコンピュータにプリ
ンタを継げば、紙の上に複製を作る事が出来る。As explained above, the present invention incorporates a liquid crystal display board and its control circuit on the Fresnel mirror of an OHP, so that images to be enlarged and projected can be easily created and edited on a personal computer, and the images can be converted into moving images. things become possible. Furthermore, by recording information on a storage device such as a floppy disk, it can be easily saved, and by making a copy on another floppy disk or connecting a printer to a personal computer, it is possible to make a copy on paper.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例のブロック図、第２図、第３
図は第１図中のＯＨＰを示す断面図、平面図である。 １・・・液晶表示板、２・・・フレネルミラー、４・・
・画像制御回路、５・・・光源、６・・・光学レンズ、
７・・・映写ミラー、８・・・パーソナルコンピュータ
、９・・・ＣＲＴ、１０・・・画像入力装置、１１・・
・キーボード、１２・・・タブレット、１３・・・マウ
ス、１４・・・プリンタ。FIG. 1 is a block diagram of one embodiment of the present invention, FIG.
The figures are a sectional view and a plan view showing the OHP in FIG. 1. 1...Liquid crystal display board, 2...Fresnel mirror, 4...
・Image control circuit, 5... light source, 6... optical lens,
7... Projection mirror, 8... Personal computer, 9... CRT, 10... Image input device, 11...
・Keyboard, 12...tablet, 13...mouse, 14...printer.

Claims (1)

【特許請求の範囲】[Claims] フレネルミラーと、このフレネルミラーの上に配置した
液晶表示板と、入力された情報の前記液晶表示板への表
示を制御する画像制御回路と、前記液晶表示板の表示を
拡大投影する光学系とを具備することを特徴とする拡大
投影方式。a Fresnel mirror, a liquid crystal display board disposed on the Fresnel mirror, an image control circuit for controlling display of input information on the liquid crystal display board, and an optical system for enlarging and projecting the display on the liquid crystal display board. An enlarged projection method characterized by comprising:
JP63149554A 1988-06-16 1988-06-16 Enlargement projection system Pending JPH01316791A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63149554A JPH01316791A (en) 1988-06-16 1988-06-16 Enlargement projection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63149554A JPH01316791A (en) 1988-06-16 1988-06-16 Enlargement projection system

Publications (1)

Publication Number Publication Date
JPH01316791A true JPH01316791A (en) 1989-12-21

Family

ID=15477702

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63149554A Pending JPH01316791A (en) 1988-06-16 1988-06-16 Enlargement projection system

Country Status (1)

Country Link
JP (1) JPH01316791A (en)

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