Reflective projection screen, transmissive projection screen and projection system

Abstract

The invention discloses a reflective projection screen, a transmissive projection screen and a projection system. The reflective projection screen includes a protective layer, a color shift correction layer and a reflection layer, the color shift correction layer is located between the protection layer and the reflection layer, the color shift correction layer includes an excitation area filled with excited particles, and the excitation area at least covers the reflection In the edge area of ​​the reflective projection screen, the excited particles emit the color light required to correct the color shift of the reflective projection screen under the excitation of the external light source. The excited particles in the correction layer emit colored light under the excitation of external excitation light, and enter the reflective layer, the light reflected by the reflective layer excites the excited particles in the color shift correction layer again to emit colored light, and the colored light enters the protective layer after passing through the protective layer. human eye. The reflective projection screen improves the uniformity of screen chromaticity.

Description

technical field [0001] The invention relates to the field of projection display, in particular to a reflective projection screen, a transmissive projection screen and a projection system. Background technique [0002] In recent years, laser TVs have developed rapidly. In order to meet the viewing effect of users in different lighting environments, laser TVs are equipped with dedicated screens. The purpose of configuring the screens is to achieve better contrast even in relatively bright lighting environments. , so as to obtain a better viewing effect. Generally, television projection screens include reflective projection screens and transmissive projection screens. [0003] For reflective projection screens, the most critical component is the Fresnel prism surface, which can reflect effective light to the human eye through the reflection of the Fresnel prism surface. The reflective projection screen usually cooperates with the laser projection device to display images, and...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of uneven chromaticity of the screen in the related art, the present invention provides a reflective projection screen, a transmissive projection screen and a projection system

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