JPS63292880A - Method and device for picture projection - Google Patents
Method and device for picture projectionInfo
- Publication number
- JPS63292880A JPS63292880A JP12714187A JP12714187A JPS63292880A JP S63292880 A JPS63292880 A JP S63292880A JP 12714187 A JP12714187 A JP 12714187A JP 12714187 A JP12714187 A JP 12714187A JP S63292880 A JPS63292880 A JP S63292880A
- Authority
- JP
- Japan
- Prior art keywords
- screen
- liquid crystal
- crystal panel
- optical axis
- picture
- 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
- 238000000034 method Methods 0.000 title claims description 9
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 41
- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 239000011295 pitch Substances 0.000 claims abstract description 15
- 230000010355 oscillation Effects 0.000 claims abstract description 7
- 230000010358 mechanical oscillation Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 8
- 229910052736 halogen Inorganic materials 0.000 description 6
- 150000002367 halogens Chemical class 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000010365 information processing Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
- G09G3/002—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to project the image of a two-dimensional display, such as an array of light emitting or modulating elements or a CRT
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/007—Use of pixel shift techniques, e.g. by mechanical shift of the physical pixels or by optical shift of the perceived pixels
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2003—Display of colours
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
開示技術は液晶テレビ等の液晶パネルに電子駆動装置に
より形成させたカラー画像等の画像に対し、ハロゲンラ
ンプ等の光源からの光を透過させて支クリーン上に鮮明
゛なカラー画像を拡大して投影するようにした技術分野
に属する。[Detailed Description of the Invention] <Industrial Application Field> The disclosed technology allows light from a light source such as a halogen lamp to pass through an image such as a color image formed by an electronic driving device on a liquid crystal panel such as a liquid crystal television. It belongs to a technical field in which a clear color image is enlarged and projected onto a supporting screen.
く要旨の概要〉
而して、この出願の発明はカラー液晶テレビ等の液晶パ
ネルに所定の電子駆動装置によりカラー画像等を形成さ
せ、ハロゲンランプ等からの白色光を透過させて画像情
報を乗せ、スクリーン上に拡大して投影するに際′し、
液晶パネルとスクリーンとの間に介装させた反射ミラー
に機械的な振動を付与して光軸を振動させ鮮明な拡大画
像を投影するようにした方法、及び、該方法に直接使用
する装置に関する発明であり、特に、反射ミラーと装置
フレームの一方に永久磁石を、他方に交流電磁石を付設
して所定の振動を光軸に与え、スクリーン上に拡大投影
される液晶パネルの画像の２ピッチ分の幅の振動を付与
してより鮮明で明るいカラー画像等の画像を投影する方
法′及び装置に係る発明である。Summary of the gist> The invention of this application forms a color image, etc. on a liquid crystal panel of a color liquid crystal television or the like using a predetermined electronic driving device, and transmits white light from a halogen lamp or the like to transfer image information. , when enlarging and projecting on the screen,
A method for projecting a clear enlarged image by applying mechanical vibration to a reflective mirror interposed between a liquid crystal panel and a screen to vibrate the optical axis, and a device directly used for the method. This is an invention in which a permanent magnet is attached to one side of the reflecting mirror and the device frame, and an AC electromagnet is attached to the other side to give a predetermined vibration to the optical axis, and the image is enlarged and projected on a screen by two pitches of a liquid crystal panel image. This invention relates to a method and apparatus for projecting images such as clearer and brighter color images by applying vibrations with a width of .
〈従来技術〉
周知の如く、情報化社会の加速度は近時極めて速くなり
、単に市民生活のみならず、産業活動にとっても情報処
理技術は極めて重要になってきており、特に、情報処理
器官のうち最も情報処理機能に優れている視聴覚を介し
ての情報処理を行うテレビ技術は、一方において、ブラ
ウン管テレビの大型化、他方において、液晶テレビによ
るマイクロ化が進む分極した発達を遂げつつある。<Prior art> As is well known, the acceleration of the information society has become extremely rapid in recent years, and information processing technology has become extremely important not only for citizens' lives but also for industrial activities. Television technology, which processes information through audiovisual means, which has the best information processing capabilities, is undergoing polarized development, with on the one hand, cathode ray tube televisions becoming larger, and on the other hand, liquid crystal televisions becoming more micro-sized.
而して、液晶テレビはその液晶パネルが光透過性である
ことによりマイクロ化しながらも、液晶パネルの画像に
対し光源からの光を透過させて画像情報を乗せ、スクリ
ーン上に拡大して投影する技術が急速に進んでおり、様
々な光電技術が開発されている。Because the LCD panel is light-transmissive, LCD TVs are made microscopic, but the image on the LCD panel transmits light from the light source, carries image information, and is enlarged and projected onto the screen. Technology is rapidly advancing, and various photoelectric technologies are being developed.
〈発明が解決しようとする問題点〉
しかしながら、液晶テレビ等に用いられる液晶パネルの
原画像は多数の画素から形成されているために、直視す
るには液晶テレビとして支障はないが、液晶パネルに光
源からの光を透過させてその画像をスクリーン上に拡大
して投影すると、基本的に液晶パネルの画素がスクリー
ン上に拡大投影きれるため画素が粗くなり、解像度が低
くなるという不都合さがあり、特に、カラー画像の拡大
投影においては赤（以下Ｒと略称）、緑（以下Ｇと略称
）、青（以下Ｂと略称）の３画素によるカラー画像の場
合はスクリーン上に所謂フリッカ−現象が生じ、見難い
という難点があった。<Problems to be Solved by the Invention> However, since the original image of the liquid crystal panel used in liquid crystal televisions etc. is formed from a large number of pixels, there is no problem in viewing it directly as an liquid crystal television, but the liquid crystal panel When light from a light source is passed through and the image is enlarged and projected onto a screen, the pixels of the liquid crystal panel are basically enlarged and projected onto the screen, which has the disadvantage of making the pixels coarser and lowering the resolution. In particular, when enlarging and projecting a color image, a so-called flicker phenomenon occurs on the screen when the color image is made up of three pixels: red (hereinafter abbreviated as R), green (hereinafter abbreviated as G), and blue (hereinafter abbreviated as B). The problem was that it was difficult to see.
これに対処するに、例えば、特公昭５４−２８６９４号
公報発明等が開発されて液晶パネルとスクリーンとの間
に介装した反射ミラーに機械的な振動装置を付設して光
源から液晶パネルを透過し、画像情報を乗せてスクリー
ンに照射される光軸をＲｌＧ、Ｂのトリオピッチ分の幅
に振動を付与して該種フリッカー現象を消去させ、画質
向上を図るようにする技術が開発されている。To deal with this, for example, the invention disclosed in Japanese Patent Publication No. 54-28694 has been developed, in which a mechanical vibration device is attached to a reflective mirror interposed between the liquid crystal panel and the screen, so that light can be transmitted from the light source through the liquid crystal panel. However, a technology has been developed in which the optical axis carrying image information and irradiated onto the screen is vibrated to a width corresponding to the RlG, B trio pitch to eliminate the flicker phenomenon and improve the image quality. There is.
しかしながら、核種技術によると、実際には光軸に対す
る振動がスクリーン上での液晶パネルのＲｌＧ、Ｂの３
画像のピッチ幅分だけの振動を付与するためにＲ，Ｇ、
Ｂの１画素で１ユニツトとされるサイクルが振動上反復
されるに過ぎないことになり、フリッカ−現象の消去に
はつながらないという欠点があった。However, according to nuclide technology, the vibration with respect to the optical axis actually causes the 3 RlG and B of the liquid crystal panel on the screen.
R, G, to give vibration equal to the pitch width of the image.
This has the drawback that the cycle in which one B pixel constitutes one unit is simply repeated in terms of vibration, and the flicker phenomenon cannot be eliminated.
〈発明の目的〉
この出願の発明の目的は上述従来技術に基づくカラー液
晶テレビ等の液晶パネルに形成された画像情報のスクリ
ーン上への拡大投影に伴うフリッカ−現象解消の問題点
を解決すべき技術的課題とし、液晶パネルからスクリー
ンへの光軸に対する振動付与を確実にフリッカ−現象消
去につながるようにピッチ調整を行い、スクリーン上で
のフリッカ−現象を除去し、鮮明で明るく解像度の高い
拡大画像が得られるようにして情報産業における画像処
理技術利用分野に益する優れた画像投影方法及び装置を
提供せんとするものである。<Object of the Invention> The object of the invention of this application is to solve the problem of eliminating the flicker phenomenon caused by the enlarged projection of image information formed on a liquid crystal panel such as a color liquid crystal television onto a screen based on the above-mentioned prior art. As a technical issue, we adjusted the pitch to ensure that the vibration applied to the optical axis from the liquid crystal panel to the screen leads to the elimination of the flickering phenomenon, eliminating the flickering phenomenon on the screen, and achieving clear, bright, and high-resolution magnification. It is an object of the present invention to provide an excellent image projection method and apparatus that can obtain images and benefit the field of image processing technology application in the information industry.
く問題点を解決するための手段・作用〉上述目的に沿い
先述特許請求の範囲を要旨とするこの出願の発明の構成
は前述問題点を解決するために、液晶テレビ等の液晶パ
ネルに電子駆動装置によって所定のカラー画像を形成さ
せ、一方、ハロゲンランプ等の光源からの光を液晶パネ
ルに対し透過させてその画像情報を乗せ、スクリーン上
に拡大投影するに際°し、該液晶パネルとスクリーンと
の間に介装した反射ミラーに光軸振動装置を付設し、反
射ミラーと装置フレームの一方に永久磁石を、他方に交
流電磁石を対向して付設することにより印加される交流
電圧により反射ミラーは所定にその支点を介して自在に
振動し、反射される液晶パネルの画像情報を乗せた光は
スクリーン上にその拡大画素を投影されるが、スクリー
ン上に拡大投影される液晶パネルの画素がスクリーン上
でＲ，Ｇ、Ｂの直線上に並んだ方向に２ピッチ分だけの
振幅で振動するようにされることによりスクリーン上に
於けるフリッカ−現象は確実に除去され、解像度の高い
鮮明な画像が得られるようにした技術的手段を講じたも
のである。In order to solve the above-mentioned problems, the structure of the invention of this application, which is based on the above-mentioned claims in accordance with the above-mentioned object, is to provide an electronic drive to a liquid crystal panel such as a liquid-crystal television. A predetermined color image is formed by a device, and on the other hand, light from a light source such as a halogen lamp is transmitted through a liquid crystal panel to carry the image information, and when the image is enlarged and projected onto a screen, the liquid crystal panel and the screen are An optical axis oscillation device is attached to the reflective mirror interposed between the reflective mirror and the device frame, and a permanent magnet is attached to one side of the reflective mirror and the device frame, and an AC electromagnet is attached to the other side so that the reflective mirror can be moved by the AC voltage applied. vibrates freely through a predetermined fulcrum, and the reflected light carrying the image information of the liquid crystal panel is projected onto the screen with enlarged pixels. The flicker phenomenon on the screen is reliably eliminated by vibrating on the screen in the direction in which R, G, and B are lined up in a straight line with an amplitude equal to two pitches. It takes technical measures to make it possible to obtain images.
〈実施例〉 次に、この出願の発明の１実施例を図面を参照 。<Example> Next, refer to the drawings for an embodiment of the invention of this application.
して説明すれば以下の通りである。The explanation is as follows.
図示実施例はカラー画像投影装置１の態様であリ、スク
リーン２に所定距離離隔して対向した位置には光源とし
てのハロゲンランプ３が設けられており、その前部の所
定位置には周知のカラー画像形成用の液晶パネル４がセ
ットされて、所定の電子駆動装置５に電気的に接続され
ている。The illustrated embodiment is a color image projector 1, in which a halogen lamp 3 as a light source is provided at a position facing a screen 2 at a predetermined distance, and a well-known halogen lamp 3 is provided at a predetermined position in front of the screen 2. A liquid crystal panel 4 for color image formation is set and electrically connected to a predetermined electronic drive device 5.
そして、液晶パネル４の前部には反射ミラー６が設けら
れてスクリーン２との間に投影レンズ７を設置し、光源
３からの光軸が該反射ミラー６により反射されて投影レ
ンズ７を通りスクリーン２上に液晶パネル４に形成され
たカラー画像を拡大して投影するようにされている。A reflection mirror 6 is provided in front of the liquid crystal panel 4, and a projection lens 7 is installed between it and the screen 2, and the optical axis from the light source 3 is reflected by the reflection mirror 6 and passes through the projection lens 7. A color image formed on a liquid crystal panel 4 is enlarged and projected onto a screen 2.
而して、反射ミラー６に於いては第２図に示す様に、ぞ
の中央部等の所定位置に設けた支点９に対して所定の微
小角度振動自在に設けられ、装置フレーム１０に設置さ
れた交流電磁石１１の先端に弾性ゴム１２を介して永久
磁石１３が固設されて反射ミラー６に所定サイクルの振
動を付与するようにされている。As shown in FIG. 2, the reflecting mirror 6 is provided so as to be able to vibrate by a predetermined minute angle with respect to a fulcrum 9 provided at a predetermined position such as the center of the mirror, and is installed in the device frame 10. A permanent magnet 13 is fixed to the tip of the AC electromagnet 11 via an elastic rubber 12 so as to impart a predetermined cycle of vibration to the reflecting mirror 6.
そして、反射ミラー６の他端側にはフレーム１０に固設
したねじブラケット１４に対し調整ねじ１５が螺装され
て、反射ミラー６の先端に添着した弾性ゴム１２の振動
ストロ−１り、即ち、光の反射角を調節することが出来
るようにされている。At the other end of the reflecting mirror 6, an adjusting screw 15 is screwed into a screw bracket 14 fixed to the frame 10. , the reflection angle of light can be adjusted.
そして、これらの装置が光軸８に対する光軸振動装置１
６を形成している。These devices are the optical axis vibration device 1 for the optical axis 8.
6 is formed.
そして、該光軸振動装置１６の支点９を介しての振動の
振幅は、第３図に示す様に、液晶パネル４に形成された
画像の画素が投影レンズ７を介してスクリーン２に拡大
投影された画素Ｒ，Ｇ、Ｂの２ピツチ分の振幅、第３図
に示すＰ分だけ振動するように予め調整されている。As shown in FIG. It is adjusted in advance so that it vibrates by an amplitude corresponding to two pitches of the pixels R, G, and B, which corresponds to an amount P shown in FIG.
上述構成のカラー画像投影装置１に於いて、液晶パネル
４に電子駆動装置５により所定のカラー画像が形成され
、光源３よりの白色光を透過させ反射ミラー６により反
射させて投影レンズ７によりスクリーン２上に拡大され
たカラー画像が投影される。In the color image projection device 1 configured as described above, a predetermined color image is formed on the liquid crystal panel 4 by the electronic drive device 5, white light from the light source 3 is transmitted, reflected by the reflection mirror 6, and projected onto the screen by the projection lens 7. An enlarged color image is projected onto 2.
而して、当該プロセスにおいて、反射ミラー６には光軸
振動装置１４が設けられていることにより、交流電磁石
１１に印加される所定サイクルの交流電圧により、反射
ミラー６の一端に設けられた永久磁石１３と所定サイク
ルで極性が振動的に変わり、それによって弾性ゴム１２
を介して反射ミラー６に所定サイクルの振動が印加され
、液晶パネル４を透過する光源３からの光のカラー画像
を乗ぜた光は反射ミラー６で反射されて投影レンズＴを
透過してスクリーン２上に第３図のハツチングに示すス
クリーン上のＲ，Ｇ、Ｂの画素の３ピツチのうちの２ピ
ツチ分だけが振動を付与されて投影されるために、スク
リーン２上に於いてはフリッカ−現象等の生じない解像
度の良好な画質の良い画像が形成されることになる。In this process, since the reflecting mirror 6 is provided with the optical axis vibrating device 14, the permanent vibration provided at one end of the reflecting mirror 6 is caused by the alternating current voltage of a predetermined cycle applied to the alternating current electromagnet 11. The polarity of the magnet 13 changes vibrationally in a predetermined cycle, thereby causing the elastic rubber 12 to
A predetermined cycle of vibration is applied to the reflection mirror 6 through the LCD panel 4, and the light multiplied by the color image of the light from the light source 3 that passes through the liquid crystal panel 4 is reflected by the reflection mirror 6 and passes through the projection lens T to the screen 2. Since only 2 pitches of the 3 pitches of R, G, and B pixels on the screen shown by the hatching in FIG. This results in the formation of a high-quality image with good resolution and no phenomena.
当該態様において、例えば、第３図の下段左側のＲにつ
いてみると、Ｒ，ＧｌＢの３ピツチ分の２ピツチ分の振
幅°で振動することによりＲの画素は隣接するＧ、及び
、Ｂと混色し、したがって、その部分は白色化しフリッ
カ−現象は消去されることになる。In this aspect, for example, if we look at R on the left side of the lower row in Figure 3, the R pixel vibrates with an amplitude of 2 pitches (3 pitches of R and GlB), so that the R pixel mixes color with the adjacent G and B pixels. Therefore, that part becomes white and the flicker phenomenon is eliminated.
尚、この出願の発明の実！態様は上述実施例に限るもの
でないことは勿論であり、例えば、光軸振動装置として
は電歪機構により光透過の屈折率を高速変化させて光軸
を振動するようにする等種々の態様が採用可能である。In addition, the fruit of the invention of this application! Of course, the embodiments are not limited to the above-mentioned embodiments. For example, the optical axis vibrating device may have various embodiments, such as using an electrostrictive mechanism to rapidly change the refractive index of light transmission to vibrate the optical axis. Adoptable.
又、適用対象はカラー液晶テレビの他にモノクローム液
晶テレビ等の液晶パネルが適用可能であ′ることも勿論
のことである。It goes without saying that the present invention can be applied to liquid crystal panels such as monochrome liquid crystal televisions in addition to color liquid crystal televisions.
〈発明の効果〉
以上、この出願の発明によれば、カラー液晶テレビ等の
液晶パネルに電子駆動装置により画像を形成させてハロ
ゲンランプ等の光源からの白色光を透過させて画像情報
を乗せ反射ミラーを介してスクリーン上に拡大画像を投
影するに際し、液晶パネルとスクリーンとの間に介装す
る反射ミラーを光軸振動装置によりスクリーン上に拡大
投影される画素の２ピツチ分の振幅の振動を付与するこ
とにより、フリッカ−現象部分の消去が確実にされ、し
たがって、スクリーン上には鮮明で画質の良い拡大画像
が投影されることが出来るという優れた効果が奏される
。<Effects of the Invention> As described above, according to the invention of this application, an image is formed on the liquid crystal panel of a color liquid crystal television or the like by an electronic driving device, and white light from a light source such as a halogen lamp is transmitted, image information is placed thereon, and the image is reflected. When projecting an enlarged image onto a screen via a mirror, a reflection mirror interposed between the liquid crystal panel and the screen is vibrated with an amplitude equivalent to two pitches of the pixels enlarged and projected onto the screen by an optical axis vibration device. By applying this, it is ensured that the flicker phenomenon part is eliminated, and therefore, an excellent effect is achieved in that a clear and high-quality enlarged image can be projected on the screen.
而して、光軸振動装置については反射ミラーと装置フレ
ームの一方に永久磁石を、使方に交流電磁石を付与して
対向設置するようにしたことにより、反射ミラーは高速
で振動し、しかも、スクリーン上の画素の３ピツチのう
ちの２ピツチ分だけの幅での投影が付与されるために、
フリッカ−発生部分の白色化が行われて画面にチラつき
をなくし正常な拡大画像の鑑賞を行うことが出来、情報
伝達機能が確実に果せるという優れた効果が奏される。As for the optical axis vibrating device, a permanent magnet is attached to one side of the reflecting mirror and the device frame, and an alternating current electromagnet is attached to the device frame so that the reflecting mirror can vibrate at high speed, and Since a projection with a width of only 2 out of 3 pixel pitches on the screen is given,
The area where the flicker occurs is whitened, eliminating flickering on the screen, allowing normal viewing of the enlarged image, and providing an excellent effect of reliably fulfilling the information transmission function.
図面はこの出願の発明の１実施例の説明図であり、第１
図は装置の模式部分断面側面図、第２図は光軸振動装置
の側面図、第３図はスクリーン上に於ける画素振動の模
式平面図である。The drawing is an explanatory diagram of one embodiment of the invention of this application, and the drawing is a first embodiment of the invention of this application.
The figure is a schematic partial cross-sectional side view of the device, FIG. 2 is a side view of the optical axis vibrating device, and FIG. 3 is a schematic plan view of pixel vibration on the screen.
Claims (2)
過させてスクリーン上に拡大して画像を投影するに際し
該液晶パネルからスクリーンへの光軸に振動を与えるよ
うにした画像投影方法において、該光軸の振動をスクリ
ーン上に投影される液晶パネルの拡大投影画素の２ピッ
チ分の振動にするようにした画像投影方法。(1) In an image projection method in which the optical axis from the liquid crystal panel to the screen is vibrated when the image formed on the liquid crystal panel is transmitted through light from a light source and enlarged and projected onto the screen. An image projection method in which the vibration of the optical axis is made equal to two pitches of enlarged projection pixels of a liquid crystal panel projected onto a screen.
のスクリーン側に光軸振動装置が介装されている画像投
影装置において、該光軸振動装置が反射ミラーとフレー
ムの一方に永久磁石が、他方に交流電磁石が付設されて
いることを特徴とする画像投影装置。(2) In an image projection device in which an optical axis oscillation device is interposed on the screen side of a liquid crystal panel installed between a light source and a screen, the optical axis oscillation device has a permanent magnet attached to one of the reflecting mirror and the frame. , an image projection device characterized in that an alternating current electromagnet is attached to the other side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12714187A JPS63292880A (en) | 1987-05-26 | 1987-05-26 | Method and device for picture projection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12714187A JPS63292880A (en) | 1987-05-26 | 1987-05-26 | Method and device for picture projection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63292880A true JPS63292880A (en) | 1988-11-30 |
Family
ID=14952632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12714187A Pending JPS63292880A (en) | 1987-05-26 | 1987-05-26 | Method and device for picture projection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63292880A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5250967A (en) * | 1990-12-27 | 1993-10-05 | Sanyo Electric Co., Ltd. | Liquid crystal projector |
| EP0606162A2 (en) * | 1993-01-07 | 1994-07-13 | Sony Corporation | Image display system with pixel mosaic pattern |
| US5402184A (en) * | 1993-03-02 | 1995-03-28 | North American Philips Corporation | Projection system having image oscillation |
| US6906852B1 (en) | 2003-12-31 | 2005-06-14 | Texas Instruments Incorporated | Wavelength discriminated image dithering |
| WO2005067637A2 (en) | 2004-01-07 | 2005-07-28 | Texas Instruments Incorporated | Method and apparatus for increasing a perceived resolution of a display |
| JP2005301164A (en) * | 2004-04-16 | 2005-10-27 | Sony Corp | Illumination apparatus and image display apparatus |
| US7086736B2 (en) | 2004-01-20 | 2006-08-08 | Hewlett-Packard Development Company, L.P. | Display system with sequential color and wobble device |
| US7154508B2 (en) | 2004-04-30 | 2006-12-26 | Hewlett-Packard Development Company, L.P. | Displaying least significant color image bit-planes in less than all image sub-frame locations |
| US7172288B2 (en) | 2003-07-31 | 2007-02-06 | Hewlett-Packard Development Company, L.P. | Display device including a spatial light modulator with plural image regions |
| US7317465B2 (en) | 2002-08-07 | 2008-01-08 | Hewlett-Packard Development Company, L.P. | Image display system and method |
| US7675510B2 (en) | 2002-08-07 | 2010-03-09 | Hewlett-Packard Development Company, L.P. | Image display system and method |
-
1987
- 1987-05-26 JP JP12714187A patent/JPS63292880A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5250967A (en) * | 1990-12-27 | 1993-10-05 | Sanyo Electric Co., Ltd. | Liquid crystal projector |
| EP0606162A2 (en) * | 1993-01-07 | 1994-07-13 | Sony Corporation | Image display system with pixel mosaic pattern |
| EP0606162A3 (en) * | 1993-01-07 | 1994-11-02 | Sony Corp | Image display system with pixel mosaic pattern. |
| US5402184A (en) * | 1993-03-02 | 1995-03-28 | North American Philips Corporation | Projection system having image oscillation |
| US7679613B2 (en) | 2002-08-07 | 2010-03-16 | Hewlett-Packard Development Company, L.P. | Image display system and method |
| US7675510B2 (en) | 2002-08-07 | 2010-03-09 | Hewlett-Packard Development Company, L.P. | Image display system and method |
| US7317465B2 (en) | 2002-08-07 | 2008-01-08 | Hewlett-Packard Development Company, L.P. | Image display system and method |
| US7172288B2 (en) | 2003-07-31 | 2007-02-06 | Hewlett-Packard Development Company, L.P. | Display device including a spatial light modulator with plural image regions |
| US6906852B1 (en) | 2003-12-31 | 2005-06-14 | Texas Instruments Incorporated | Wavelength discriminated image dithering |
| EP1754217A4 (en) * | 2004-01-07 | 2010-02-03 | Texas Instruments Inc | Method and apparatus for increasing a perceived resolution of a display |
| EP1754217A2 (en) * | 2004-01-07 | 2007-02-21 | Texas Instruments Incorporated | Method and apparatus for increasing a perceived resolution of a display |
| WO2005067637A2 (en) | 2004-01-07 | 2005-07-28 | Texas Instruments Incorporated | Method and apparatus for increasing a perceived resolution of a display |
| US8723846B2 (en) | 2004-01-07 | 2014-05-13 | Texas Instruments Incorporated | Method and apparatus for increasing a perceived resolution of a display |
| US7086736B2 (en) | 2004-01-20 | 2006-08-08 | Hewlett-Packard Development Company, L.P. | Display system with sequential color and wobble device |
| JP2005301164A (en) * | 2004-04-16 | 2005-10-27 | Sony Corp | Illumination apparatus and image display apparatus |
| US7154508B2 (en) | 2004-04-30 | 2006-12-26 | Hewlett-Packard Development Company, L.P. | Displaying least significant color image bit-planes in less than all image sub-frame locations |
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