TRANSMISSION TYPE TRANSPARENT SCREEN, VIDEO DISPLAY SYSTEM, AND VIDEO DISPLAY METHOD

• Main Authors: SEKIKAWA KENTA, TOUGE YUKIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 02.11.2017
• Subjects: 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; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; HOLOGRAPHY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

PROBLEM TO BE SOLVED: To provide a transmission type transparent screen that is excellent in see-through properties of a scene in an opposite side to a transparent screen when viewed from an observer in a state where video light is not projected from a projector, and is excellent in see-through properties of a video displayed on the transparent screen when viewed from the observer in a state where video light is projected from the projector, which has good transparency and suppresses a change in hue of the scene and a hue of the projection image seen through the screen, and to provide a video display system and a video display method using the same.SOLUTION: A transmission type transparent screen 1 has a light scattering layer 34 containing a transparent resin 32 and a light scattering material 33, where the inorganic fine particles have an average particle diameter of the light scattering material of 100-400 nm, a part of the inorganic fine particles is an aggregate obtained by aggregating 20 or less primary particles and aggregated particles are an aggregate by aggregating 20 or less primary particles, and the light scattering layer 34 has a haze of 5-45% and the total light transmittance of 40% or more.SELECTED DRAWING: Figure 1 【課題】投影機から映像光を投射しない状態では、観察者から見て透明スクリーンの向こう側の光景の透視性に優れ、投影機から映像光を投射している状態では、観察者から見て透明スクリーンに表示される映像の視認性に優れる透過型透明スクリーンであって、透明性が良好でかつスクリーンを通して見える光景の色味および投影像の色味が変化するのを抑制した透過型透明スクリーン、ならびにこれを用いた映像表示システムおよび映像表示方法を提供する。【解決手段】透明樹脂３２および光散乱材料３３を含む光散乱層３４を有する透過型透明スクリーン１であって、光散乱材料の平均一次粒子径が１００〜４００ｎｍの無機微粒子であり、該無機微粒子の一部は１次粒子の２０個以下が凝集した凝集体となっており凝集粒子が前記１次粒子の２０個以下が凝集した凝集体であり、光散乱層３４が、ヘーズが、５〜４５％であり、全光線透過率が、４０％以上である。【選択図】図１