Screen and projection system

Abstract

The invention aims at providing a screen and a projection system capable of reducing manufacture procedure and used for obtaining image with improved contrast ratio with lower cost. A screen includes: a substrate 2; and a first color material layer 4 disposed on one surface of the substrate 2, wherein the first color material layer 4 includes a first color material 9y adapted to absorb light with a part of wavelengths of an incident light, and the first color material 9y has a peak absorption wavelength in a visible light range, and a size of causing Mie scattering on the light in the visible light range.

Description

technical field [0001] The invention relates to screens and projection systems. Background technique [0002] Conventionally, various screens have been used as projection surfaces of enlarged images for exhibitions using projectors (projection-type display devices), exhibitions at academic institutions, etc., and video viewing at home theaters. [0003] Conventional screens, such as reflective screens, have the following problem: while reflecting the projection light from the projector to display the projected image, they also reflect the light of the illumination, the sunlight entering from the window, etc. In bright places, the contrast ratio of "white (maximum brightness)" to "black (minimum brightness)" will decrease, making it difficult to display clear images. Therefore, the development of screens for the purpose of achieving high contrast in bright rooms by reducing the minimum luminance by suppressing the influence of external light that causes contrast reduction, s...

AI Technical Summary

Problems solved by technology

[0003] Conventional screens, such as reflective screens, have the following problem: while reflecting the projection light from the projector to display the projected image, they also reflect the light of the illumination, the sunlight entering from the window, etc. In bright places, the contrast, which is the brightness ratio of "white (maximum brightness)" and "black (minimum brightness)", will decrease, making it difficult to achieve clear image display

However, in such a structure, since the wavelength component before external light absorption is reflected to the viewing side (observer side) due to backscattering on the surface of the scattering layer, the effect of improving the contrast by the light-absorbing layer is not sufficient. Color purity will decrease

In addition, the scattering material contained in the scattering layer is often expensive, and the number of steps increases due to the need for a process for forming the scattering layer, which also causes an increase in the manufacturing cost of the screen.

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