SCREEN AND DISPLAY

PROBLEM TO BE SOLVED: To provide a screen that can sufficiently reduce speckle.SOLUTION: A screen 40 is irradiated with light by a projector 20 that emits a video formed of coherent light and displays an image, and comprises: a plurality of particles that have a reflection function and a diffusion f...

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Bibliographische Detailangaben
Hauptverfasser:	KURASHIGE MAKIO, HONDA HIROYUKI, KUBOTA SHOGO, ISHIDA KAZUTOSHI, UMETANI MASAKI, NAKATSUGAWA KAORI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING ELECTROGRAPHY FREQUENCY-CHANGING HOLOGRAPHY NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL LOGIC ELEMENTS OPTICS PHOTOGRAPHY PHYSICS TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a screen that can sufficiently reduce speckle.SOLUTION: A screen 40 is irradiated with light by a projector 20 that emits a video formed of coherent light and displays an image, and comprises: a plurality of particles that have a reflection function and a diffusion function and include a first portion and a second portion having different dielectric constants from each other; a particle layer 55 that includes the plurality of particles; and electrodes 41 and 42 that form an electric field for driving the particles in the particle layer through application of voltage to the particle layer 55.SELECTED DRAWING: Figure 1 【課題】スペックルを十分に低減することができるスクリーンを提供する。【解決手段】コヒーレント光の映像を出射するプロジェクタ２０から光を照射されて画像を表示するスクリーン４０は、反射機能や拡散機能を有しそれぞれが比誘電率の異なる第１部分及び第２部分を含んだ複数の粒子と、複数の粒子を有した粒子層５５と、粒子層５５に電圧を印加されることによって、粒子層の粒子を駆動するための電場を形成する電極４１、４２と、を備える。【選択図】図１