MEMBER FOR REAL IMAGE DISPLAY AND DISPLAY SYSTEM
To provide a member for real image display that displays a bright image and has excellent visibility, and a display system.SOLUTION: A member for real image display comprises one or more light reflection layers in which a center wavelength of selective reflection at a polar angle of 60° is present i...
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Sprache: | eng ; jpn |
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Zusammenfassung: | To provide a member for real image display that displays a bright image and has excellent visibility, and a display system.SOLUTION: A member for real image display comprises one or more light reflection layers in which a center wavelength of selective reflection at a polar angle of 60° is present in a visible light region, where at least one of the light reflection layers is formed of a cholesteric liquid crystal layer, and spiral senses of all the cholesteric liquid crystal layers are identical, and satisfies a formula (1). The formula (1) R[-60, 40](550)/R[-60, 30](550)≥1.5. In the formula, R[-60, 40](550) represents reflectance at a wavelength of 550 nm measured for incident light at a polar angle of -60° on the member for the real image display, at an acceptance angle of light at a polar angle 40° at an azimuth shifted by 180° from the azimuth of the incident light, and 30 in R[-60, 30](550) represents an acceptance angle of light at a polar angle of 30° in an azimuth shifted by 180° from the azimuth of the incident light.SELECTED DRAWING: None
【課題】表示画像が明るく、視認性に優れる実像表示用部材、および表示システムを提供する。【解決手段】極角60°における選択反射の中心波長が可視光域に存在する光反射層を1層以上有し、光反射層の、少なくとも1層がコレステリック液晶層から形成され、全てのコレステリック液晶層の螺旋センスが同一であり、式(1)を満たす実像表示用部材。R[−60,40](550)/R[−60,30](550)≧1.5式(1)。式中,R[−60,40](550)は,実像表示用部材への極角−60°の入射光に対する方位角と180°ずれた方位角における極角40°の受光角度で測定される,波長550nmにおける反射率を表し,R[−60,30](550)の30は入射光の方位角と180°ずれた方位角における極角30°の受光角度を表す。【選択図】なし |
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