JPH0459624B2 - - Google Patents
Info
- Publication number
- JPH0459624B2 JPH0459624B2 JP61270086A JP27008686A JPH0459624B2 JP H0459624 B2 JPH0459624 B2 JP H0459624B2 JP 61270086 A JP61270086 A JP 61270086A JP 27008686 A JP27008686 A JP 27008686A JP H0459624 B2 JPH0459624 B2 JP H0459624B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- image
- projection
- projection lens
- crystal display
- 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.)
- Expired - Lifetime
Links
- 239000004973 liquid crystal related substance Substances 0.000 claims description 47
- 238000009434 installation Methods 0.000 claims description 34
- 238000005286 illumination Methods 0.000 claims description 17
- 230000003287 optical effect Effects 0.000 claims description 14
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Projection Apparatus (AREA)
- Transforming Electric Information Into Light Information (AREA)
Description
【発明の詳細な説明】
＜産業上の利用分野＞
本発明は、液晶デイスプレイで形成する透過画
像を照明装置と投影レンズとを用いてスクリーン
上に拡大投影する投影装置を複数個用いてマルチ
投影する構成の液晶デイスプレイマルチ投影装置
に関する。Detailed Description of the Invention <Industrial Application Field> The present invention provides multi-projection using a plurality of projection devices that enlarge and project a transmitted image formed on a liquid crystal display onto a screen using an illumination device and a projection lens. The present invention relates to a liquid crystal display multi-projection device configured to.
＜従来の技術＞
液晶デイスプレイの大面積化は、例えば、日経
エレクトロニクス「加速する大型液晶デイスプレ
イの開発（第81〜93頁）」（1985.12.30日刊）等に
よつて、画素数640×400ドツトで12型相当の大き
さのパネルが登場していることが知られている。<Conventional technology> The increase in the area of liquid crystal displays has been achieved, for example, by Nikkei Electronics, "Accelerating development of large liquid crystal displays (pages 81-93)" (daily publication, December 30, 1985), which has a pixel count of 640 x 400 dots. It is known that panels with a size equivalent to 12 inches are now available.
＜発明が解決しようとする問題点＞
しかしながら、液晶デイスプレイにあつては、
前記された以上のパネルの大型化は尚技術的な問
題があつて未だ実現化されていない。<Problems to be solved by the invention> However, in the case of liquid crystal displays,
Enlarging the panel size beyond that described above has not yet been realized due to technical problems.
本発明は、この従来技術の問題点に鑑みてなさ
れたものであつて、液晶デイスプレイを複数個用
いてスクリーンにマルチ投影し、この際に画像ど
うしの位置合せ操作が容易で、必要とする大きさ
の画像を高品質・高画質で簡単に得る事ができる
液晶デイスプレイマルチ投影装置を提供すること
を目的とする。 The present invention has been made in view of the problems of the prior art, and uses a plurality of liquid crystal displays to perform multi-projection on a screen, and at this time, it is easy to align images with each other, and it is possible to achieve the required size. The purpose of the present invention is to provide a liquid crystal display multi-projection device capable of easily obtaining high-quality, high-definition images.
＜問題点を解決するための手段＞
上述の目的を達成するため、本発明は、
光源１ｃが内臓されて照明光αを放出する構成
の照明ユニツト１と、
該照明ユニツトからの照明光で照明される透過
画像を形成する液晶デイスプレイ４、液晶位置調
整つまみ２c2を具備し前記液晶デイスプレイが光
軸を中心に対称に組付けられる液晶取付部２ｃ、
及び該液晶取付部の後部に照明光で照明された液
晶デイスプレイの透過画像βを光路変更させるた
めの反射ミラー２ｄが組付けられ、液晶デイスプ
レイの取付捩れ調整時に前記液晶位置調整つまみ
を操作して前記液晶デイスプレイを光軸周りに回
転させ得る構成の画像設置ユニツト２と、
及び、投影レンズ３ａ、及び該投影レンズが組
付けられて投影レンズを用いて前記反射ミラーで
光路変更された透過画像を投影スクリーン上に拡
大投影するに際して投影画像の大小を投影レンズ
焦点深度内でレンズ全体の上下位置を調整可能な
投影レンズ取付・位置調整部３ｂから成る投影レ
ンズ設置ユニツト３と、
で構成した投影装置Ａと、
該投影装置Ａが複数個組付けられて、少なくと
も前記投影装置相互間が調整可能な構造の台板Ｂ
とを具備して成り、
画像の大小を前記投影レンズ設置ユニツトの投
影レンズ取付・位置調整部を調整することで決
め、画像の前後左右方向の位置合わせを台板上で
投影レンズ設置ユニツトの遊び分を利用して行
い、画像の捩じれを前記液晶取付部の液晶位置調
整つまみにより回転調整して行うようにしたこと
を特徴とするものである。<Means for Solving the Problems> In order to achieve the above-mentioned object, the present invention comprises: a lighting unit 1 having a built-in light source 1c and emitting illumination light α; and illumination with the illumination light from the lighting unit. a liquid crystal display 4 that forms a transmitted image, a liquid crystal mounting part 2c that is equipped with a liquid crystal position adjustment knob 2c2 , and in which the liquid crystal display is assembled symmetrically about an optical axis;
A reflecting mirror 2d for changing the optical path of the transmitted image β of the liquid crystal display illuminated with illumination light is attached to the rear of the liquid crystal mounting part, and the liquid crystal position adjustment knob is operated when adjusting the mounting twist of the liquid crystal display. an image installation unit 2 configured to rotate the liquid crystal display around an optical axis; a projection lens 3a; A projection device comprising: a projection lens installation unit 3 comprising a projection lens mounting/position adjustment section 3b capable of adjusting the size of the projected image and the vertical position of the entire lens within the depth of focus of the projection lens when enlarging and projecting the image onto a projection screen; A, and a base plate B having a structure in which a plurality of the projection devices A are assembled and at least the projection devices can be adjusted mutually.
The size of the image is determined by adjusting the projection lens mounting/position adjustment section of the projection lens installation unit, and the positioning of the image in the front, rear, left and right directions is adjusted by adjusting the play of the projection lens installation unit on the base plate. The invention is characterized in that the twisting of the image is adjusted by rotating the liquid crystal position adjustment knob of the liquid crystal mounting portion.
＜実施例＞
以下本発明の実施例を第１図の本発明の具体的
実施例である液晶デイスプレイマルチ投影装置の
構成図を用いて説明する。<Embodiments> Examples of the present invention will be described below with reference to FIG. 1, which is a block diagram of a liquid crystal display multi-projection apparatus which is a specific embodiment of the present invention.
第１図において、複数の機能ユニツトから成る
投影装置Ａは複数個（この実施例においては４個
の場合を示す）用意され、これ等夫々の投影地装
置Ａは１枚構成の台板Ｂに位置等が調整されて組
付けられる。 In FIG. 1, a plurality of projection devices A (four in this embodiment is shown) each consisting of a plurality of functional units are prepared, and each of these projection device A is mounted on a single base plate B. The position etc. are adjusted and assembled.
投影装置Ａの機能ユニツトは、照明ユニツト
１、画像設置ユニツト２及び投影レンズ設置ユニ
ツト３の複数の機能ユニツトから成る。 The functional units of the projection apparatus A include a plurality of functional units: an illumination unit 1, an image installation unit 2, and a projection lens installation unit 3.
照明ユニツト１は、照明光αを放出するため
に、例えば、ランプケース１ａ及びランプカバー
１ｂ内に設置されたランプ（光源）１ｃと、ラン
プ１ｃから発光された光を集光する集光レンズ１
ｄと、集光レンズ１ｄで集光した光を例えば90°
光路変更するるために設けられた反射ミラー１ｅ
と、以後に詳述する投影レンズと組合せてうまく
投影スクリーン（図省略）上に結像する位置に配
置された集光フレネルレンズ１ｆと、これら各部
を一体構造にまとめる構造のブラケツト１ｇとか
ら夫々構成されている。 The lighting unit 1 includes, for example, a lamp (light source) 1c installed in a lamp case 1a and a lamp cover 1b to emit illumination light α, and a condenser lens 1 that collects the light emitted from the lamp 1c.
d and the light focused by the condenser lens 1d at 90°, for example.
Reflection mirror 1e provided for changing the optical path
, a condensing Fresnel lens 1f placed in a position to properly form an image on a projection screen (not shown) in combination with a projection lens, which will be described in detail later, and a bracket 1g that integrates these parts into an integrated structure. It is configured.
画像設置ユニツト２は、ブラケツト２ａと、ブ
ラケツト２ａ上に設けられた例えば３個のローラ
２ｂと、この３個のローラ２ｂ上に支持された例
えば円板状のイーゼルから成る形状で、透過画像
を形成する透過型の液晶デイスプレイ４を止め金
具２c1を用いて取付けて、この取付時の捩れを液
晶デイスプレイ４そのものをいじくることなく液
晶位置調節つまみ２c2を用いて３個のローラ2b上
を通常の振動等では動かない程度の堅さで尚且つ
光軸周りに調節（回転）可能に支持される液晶取
付部２ｃと照明光αで照射された液晶デイスプレ
イ４の透過画像を例えば90°光路変更させるため
に設けられた反射ミラー２ｄとから夫々構成され
ている。 The image installation unit 2 has a shape that includes a bracket 2a, three rollers 2b provided on the bracket 2a, and an easel in the shape of a disc, for example, supported on the three rollers 2b, and is configured to display a transmitted image. Attach the transmissive type liquid crystal display 4 to be formed using the fasteners 2c 1 , and adjust the twist on the three rollers 2b using the liquid crystal position adjustment knob 2c 2 without tampering with the liquid crystal display 4 itself. The optical path of the transmitted image of the liquid crystal display 4 irradiated with the liquid crystal display 4 irradiated with the liquid crystal mounting part 2c, which is supported so as to be rigid enough not to move due to vibrations, etc. and can be adjusted (rotated) around the optical axis, is changed by, for example, 90 degrees. and a reflecting mirror 2d provided for the purpose of reflecting the light.
投影レンズ設置ユニツト３は、画像設置ユニツ
ト２からの液晶デイスプレイ４の透過画像βを投
影スクリーン上に所定の大きさに拡大投影するた
めに、投影レンズ３ａと、投影レンズ３ａが例え
ば捩子で組付けられて投影画像の大小を投影レン
ズ焦点深度内で投影レンズ全体の上下位置を調整
可能な例えば外側部分に捩子３b1が刻まれた構造
の投影レンズ取付・位置調整部３ｂと、投影レン
ズ取付・位置調整部3bが捩子３b1が組付けられて
１枚構成の台板Ｂに組付け可能な構造から成る投
影レンズ設置フランジ３ｃとから構成されてい
る。 The projection lens installation unit 3 includes a projection lens 3a assembled with a screw, for example, in order to enlarge and project the transmitted image β of the liquid crystal display 4 from the image installation unit 2 onto a projection screen to a predetermined size. A projection lens mounting/position adjustment part 3b having a structure in which, for example, a screw 3b1 is carved on the outer part, is attached to the projection lens and can adjust the vertical position of the entire projection lens within the depth of focus of the projection lens to adjust the size of the projected image, and the projection lens. The attachment/position adjustment part 3b is composed of a projection lens installation flange 3c having a structure in which a screw 3b1 is attached and can be attached to a one-piece base plate B.
１枚構成の台板Ｂは、投影スクリーン上におけ
る投影画面どうしの位置合せを容易にするため
に、前記構成から成る投影装置Ａを４個（他の３
個も同様の構成）組付けた時において、少なくと
もこれ等相互間の位置関係が調整可能に組付けら
れる構造から成る。尚、ここでは投影装置Ａの
個々の機能ユニツトの位置関係等も調整可能な構
造に組付けられる場合を示す。即ち、この台板Ｂ
は、投影レンズ設置フランジ３ｃの位置関係が調
整可能に組付けられるフランジ孔B1（径は例えば
前後左右等に移動可能な大きさを有する。以下同
様）と、フランジ孔B1に挿入された投影レンズ
設置フランジ３ｃの位置が調整された後に固定す
るための捩子５が挿入可能な孔B2の、液晶位置
調節つまみ２c2が回転可能な幅・長さを有するつ
まみ調整用孔B3と、つまみ調整用孔B3に液晶位
置調節つまみ２c2が挿入され画像設置ユニツト２
の位置全体が光軸等の関係を含めて調整されて画
像設置ユニツト２を台板Ｂに固定るための捩子６
が挿入可能は孔B4と、照明ユニツトを台板Ｂに
固定するための捩子７が組付け可能な孔B5とを
具備し（照明ユニツト１、画像設置ユニツト２及
び投影レンズ設置ユニツト３の位置は光軸等の関
係を含めて調整されて各捩子５〜７で固定され
る）、これ等各孔は投影装置Ａの固定捩子等の個
数に応じて機械加工（第１図においては、投影ス
クリーンと台板Ｂとの距離があらかじめ決められ
ていて、即ち、拡大倍率がほぼ固定されていて、
各孔B1〜B5が各ユニツトの調整量を±mmの微量
の移動量で調整可能とするような機械加工寸法が
施された場合を示す）されている。例えば、フラ
ンジ孔B1についてみると、中心間距離は投影画
像の各々の一辺の長さの1/2に機械加工される。 In order to facilitate alignment of the projection screens on the projection screen, the one-piece base plate B supports four projection devices A (the other three) having the above configuration.
(The same structure applies to each other.) When assembled, at least the positional relationship between these parts can be adjusted. Here, a case is shown in which the projection apparatus A is assembled into a structure in which the positional relationships among the individual functional units can also be adjusted. That is, this base plate B
The projection lens installation flange 3c is assembled into the flange hole B 1 so that the positional relationship can be adjusted (the diameter has a size that allows it to be moved, for example, front to back, left to right, etc., the same applies hereinafter), and the flange hole B 1 is inserted into the flange hole B 1 . A knob adjustment hole B 3 having a width and length that allows the liquid crystal position adjustment knob 2c 2 to rotate, a hole B 2 into which a screw 5 for fixing the projection lens installation flange 3c can be inserted after the position of the projection lens installation flange 3c has been adjusted. Then, the LCD position adjustment knob 2c 2 is inserted into the knob adjustment hole B 3 and the image installation unit 2 is installed.
A screw 6 is used to fix the image installation unit 2 to the base plate B by adjusting the entire position including the relationship of the optical axis, etc.
A hole B4 into which a screw can be inserted is provided, and a hole B5 into which a screw 7 for fixing the illumination unit to the base plate B can be assembled (the illumination unit 1, the image installation unit 2 and the projection lens installation unit 3) are provided. (The position of the hole is adjusted including the relationship with the optical axis, etc., and fixed with each screw 5 to 7), and each hole is machined according to the number of fixing screws, etc. of the projection device A (see Fig. 1). In this case, the distance between the projection screen and the base plate B is predetermined, that is, the magnification is almost fixed,
(This figure shows a case in which each hole B1 to B5 is machined to such a size that the adjustment amount of each unit can be adjusted by a minute movement amount of ±mm). For example, for flange hole B1 , the center-to-center distance is machined to 1/2 the length of each side of the projected image.
この様な構成において、投影画像どうしの位置
合せは以下のようにする。 In such a configuration, the projection images are aligned as follows.
：画像の大きさは、焦点深度の深いレンズを選
ぶことで焦点深度内での画像の大きさの可変が
可能となるので、この様な投影レンズを用い、
投影レンズ取付・位置調整部３ｂを回転して投
影レンズ３ａを上下移動（矢印γ）させて焦点
距離を変えることにより決める。:The size of the image can be varied within the depth of focus by choosing a lens with a deep depth of focus, so using such a projection lens,
The focal length is determined by rotating the projection lens attachment/position adjustment section 3b and moving the projection lens 3a up and down (arrow γ) to change the focal length.
：画像の前後左右方向（Ｘ，Ｙ方向）等の位置
合せは、投影レンズ設置フランジ３ｃの遊び分
を±数mm移動することにより行う。: The alignment of the image in the front, back, left and right directions (X, Y directions) etc. is performed by moving the projection lens installation flange 3c by ± several mm.
：画像の捩れは、液晶取付部２ｃを液晶位置調
節つまみ２c2により３個のローラ２ｂ上を光軸
上で回転させて調整する。: Image distortion is adjusted by rotating the liquid crystal mounting part 2c on the three rollers 2b on the optical axis using the liquid crystal position adjustment knob 2c2 .
：デイストーシヨンは、投影レンズ３ａの拡大
精度により決まるので、必要とする画像合成精
度により決定する。: Distortion is determined by the magnification accuracy of the projection lens 3a, so it is determined by the required image synthesis accuracy.
＜その他の実施例＞
本発明は第１図の構成に限定されるものではな
い。<Other Examples> The present invention is not limited to the configuration shown in FIG.
例えば、投影装置Ａの数及び配列等に応じて台
板Ｂの形状（孔の数、配列、全体の大きさ等）を
任意に変更することができる。ここで投影装置Ａ
の数を２、３、５個とした場合は、台板Ｂの形状
を設置台数に応じて大きくし、投影装置Ａを横一
列の配列とすることも可能である。勿論その設置
方法や設置台数の数は設計に応じて任意に変更す
ることができることはいうまでもない。 For example, the shape of the base plate B (number of holes, arrangement, overall size, etc.) can be arbitrarily changed depending on the number and arrangement of the projection devices A. Here, projection device A
When the number of projectors A is set to 2, 3, or 5, the shape of the base plate B may be increased according to the number of installed projectors A, and the projection apparatuses A may be arranged in a horizontal row. Of course, the method of installation and the number of installed devices can be arbitrarily changed depending on the design.
又、台板Ｂにおける各孔の形状や数等を第２図
のその他の実施例の図に示すように変型すること
で、投影装置間の相互調整、投影スクリーンと投
影装置との間を任意に変更・調整することもでき
ることはいうまでもない。 In addition, by changing the shape and number of holes in the base plate B as shown in the diagram of other embodiments in FIG. Needless to say, it can be changed and adjusted.
更に今、個々のユニツトの構造も本質的に変り
無いかぎり、設計変更により任意に変型できる。
例えば、液晶取付部２ｃの形状を円板状ではなく
正方形とすることもでき（この時この液晶取付部
が光軸上を回転するようにローラ２ｂが挿入され
る溝を内側に設けるような事が考えられる）、又、
各反射ミラーの角度や位置も照明ユニツトと画像
設置ユニツトと投影レンズ設置ユニツトとの間の
接合関係（例えば光軸が屈折なく進む縦一列の組
合せ構造の接合関係、この時は、台板には画像設
置ユニツトと投影レンズ設置ユニツトが組付けら
れる）等によつて自由に変更することも可能であ
る。 Furthermore, the structure of each individual unit can be modified as desired by design changes as long as the structure remains essentially the same.
For example, the shape of the liquid crystal mounting part 2c may be made square instead of disc-shaped (in this case, a groove may be provided inside into which the roller 2b is inserted so that the liquid crystal mounting part rotates on the optical axis). ), and
The angle and position of each reflection mirror also depends on the connection relationship between the illumination unit, image installation unit, and projection lens installation unit (for example, the connection relationship of a combination structure in which the optical axis advances in a vertical line without refraction). It is also possible to freely change the image installation unit and the projection lens installation unit by assembling the image installation unit and the projection lens installation unit.
＜発明の効果＞
以上、実施例と共に具体的に本発明を説明した
ように、投影装置の各構成部品を照明ユニツト、
画像設置ユニツト及び投影レンズ設置ユニツト等
に夫々ユニツト化して台板に組付け、この際に、
前記画像設置ユニツトにあつては透過画面捩じれ
を調整する機構を組込んだ本発明の液晶デイスプ
レイマルチ投影装置によれば、装置全体を小形化
できる上に、投影スクリーン上においては簡単に
多くの投影面を精密に位置合せすることが可能と
なるので、大型化した液晶デイスプレイが実現で
きるという効果がある。<Effects of the Invention> As described above in detail with the embodiments, each component of the projection device is configured as an illumination unit,
The image installation unit, projection lens installation unit, etc. are each assembled into units and assembled on the base plate, and at this time,
According to the liquid crystal display multi-projection device of the present invention, which incorporates a mechanism for adjusting the torsion of the transmitted screen in the image installation unit, the entire device can be made smaller, and moreover, it is possible to easily accommodate a large number of projections on the projection screen. Since it is possible to precisely align the surfaces, there is an effect that a larger liquid crystal display can be realized.
第１図は本発明の具体的実施例である液晶デイ
スプレイマルチ投影装置の構成図、第２図は本発
明のその他の実施例を示す図である。
Ａ……投影装置、Ｂ……台板、１……照明ユニ
ツト、２……画像設置ユニツト、３……投影レン
ズ設置ユニツト。
FIG. 1 is a block diagram of a liquid crystal display multi-projection device according to a specific embodiment of the present invention, and FIG. 2 is a diagram showing another embodiment of the present invention. A... Projection device, B... Base plate, 1... Illumination unit, 2... Image installation unit, 3... Projection lens installation unit.
Claims (1)
成の照明ユニツト１と、 該照明ユニツトからの照明光で照明される透過
画像を形成する液晶デイスプレイ４、液晶位置調
整つまみ２c2を具備し前記液晶デイスプレイが光
軸を中心に対称に組付けられる液晶取付部２ｃ、
及び該液晶取付部の後部に照明光で照明された液
晶デイスプレイの透過画像βを光路変更させるた
めの反射ミラー２ｄが組付けられ、液晶デイスプ
レイの取付捩れ調整時に前記液晶位置調整つまみ
を操作して前記液晶デイスプレイを光軸周りに回
転させ得る構成の画像設置ユニツト２と、 及び、投影レンズ３ａ、及び該投影レンズが組
付けられて投影レンズを用いて前記反射ミラーで
光路変更された透過画像を投影スクリーン上に拡
大投影するに際して投影画像の大小を投影レンズ
焦点深度内でレンズ全体の上下位置を調整可能な
投影レンズ取付・位置調整部３ｂから成る投影レ
ンズ設置ユニツト３と、 で構成した投影装置Ａと、 該投影装置Ａが複数個組付けられて、少なくと
も前記投影装置相互間が調整可能な構造の台板Ｂ
とを具備して成り、 画像の大小を前記投影レンズ設置ユニツトの投
影レンズ取付・位置調整部を調整することで決
め、画像の前後左右方向の位置合わせを台板上で
投影レンズ設置ユニツトの遊び分を利用して行
い、画像の捩じれを前記液晶取付部の液晶位置調
整つまみにより回転調整して行うようにしたこと
を特徴とする液晶デイスプレイマルチ投影装置。[Scope of Claims] 1. An illumination unit 1 having a built-in light source 1c and emitting illumination light α, a liquid crystal display 4 that forms a transmitted image illuminated with the illumination light from the illumination unit, and a liquid crystal position adjustment knob. a liquid crystal mounting part 2c , which is equipped with a liquid crystal mounting part 2c, in which the liquid crystal display is assembled symmetrically about the optical axis;
A reflecting mirror 2d for changing the optical path of the transmitted image β of the liquid crystal display illuminated with illumination light is attached to the rear of the liquid crystal mounting part, and the liquid crystal position adjustment knob is operated when adjusting the mounting twist of the liquid crystal display. an image installation unit 2 configured to rotate the liquid crystal display around an optical axis; a projection lens 3a; A projection device comprising: a projection lens installation unit 3 comprising a projection lens mounting/position adjustment section 3b capable of adjusting the size of the projected image and the vertical position of the entire lens within the depth of focus of the projection lens when enlarging and projecting the image onto a projection screen; A, and a base plate B having a structure in which a plurality of the projection devices A are assembled and at least the projection devices can be adjusted mutually.
The size of the image is determined by adjusting the projection lens mounting/position adjustment section of the projection lens installation unit, and the positioning of the image in the front, rear, left and right directions is adjusted by adjusting the play of the projection lens installation unit on the base plate. 2. A liquid crystal display multi-projection device, characterized in that the image is twisted by rotationally adjusting the liquid crystal position adjustment knob of the liquid crystal mounting part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61270086A JPS63123019A (en) | 1986-11-13 | 1986-11-13 | Liquid crystal display multiple projection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61270086A JPS63123019A (en) | 1986-11-13 | 1986-11-13 | Liquid crystal display multiple projection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63123019A JPS63123019A (en) | 1988-05-26 |
| JPH0459624B2 true JPH0459624B2 (en) | 1992-09-22 |
Family
ID=17481335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61270086A Granted JPS63123019A (en) | 1986-11-13 | 1986-11-13 | Liquid crystal display multiple projection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63123019A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100225445B1 (en) * | 1991-02-22 | 1999-10-15 | 야스카와 히데아키 | Projection-type liquid crystalline projector |
| US5765934A (en) * | 1995-08-04 | 1998-06-16 | Mitsubishi Denki Kabushiki Kaisha | Projection type display |
| JP3473335B2 (en) * | 1996-08-19 | 2003-12-02 | セイコーエプソン株式会社 | Projection display device |
| KR100361177B1 (en) * | 2000-10-31 | 2002-11-23 | 엘지전자 주식회사 | Lcd projector |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6148823A (en) * | 1984-08-17 | 1986-03-10 | Asahi Optical Co Ltd | Optional position projecting device of slide projector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61128632U (en) * | 1985-01-30 | 1986-08-12 |
-
1986
- 1986-11-13 JP JP61270086A patent/JPS63123019A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6148823A (en) * | 1984-08-17 | 1986-03-10 | Asahi Optical Co Ltd | Optional position projecting device of slide projector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63123019A (en) | 1988-05-26 |
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