Method of creating an ambient light rejecting projection screen using multi-layer selective light wavelength absorption materials

Abstract

Two groups of multilayer selective light wave absorbing materials, group (a) and group (b), where group (a) is applied on top of the surface of a projection screen or any surface on which colored videos or pictures can be projected on by a projector, where the multilayers of group (a) selectively absorb the visible light waves with wavelengths other than the RGB waves matching the RGB wave wavelengths projected by the projector, and where group (b) is applied on top of the transparent surfaces of windows and light fixtures present where the projector and the screen are placed or installed, where the multilayers of group (b) selectively absorb the visible light waves matching the RGB light waves projected by the projector. With group (b) absorbing the RGB waves of the ambient light on the transparent surface of the windows and the surface of the light fixtures, and the rest of the light waves of the ambient light being absorbed by group (a) on top of the projection screen or surface, the result is then no light waves reaching the surface of the projection screen or surface other than the projector's RGB. This means that without the projector light, the screen appears as a black screen with a high contrast ratio and high gain. (FIG. 3) This invention presented herein shall be utilized for front and rear projection. In addition, group (a) multilayers can be used on LCD screens, including Switchable Glass and films, to enhance ambient light rejection and to help reduce the leaking light from the light source inside the LCD TVs. Group (a) multilayers can be used on the surface of LED screens to enhance ambient light rejection and can be used on the cover of mobile phone screens to improve visibility under bright light conditions.

Dependencies are inferred from the claim text.