Reflective projection screen, transmissive projection screen and projection system

Abstract

The present disclosure disclose a reflective projection screen, a transmissive projection screen and a projection system, the reflective projection screen includes a protective layer, excitation and reflection layers, An excitation layer is located between the protective layer and the reflective layer, excitation particles with different sizes are formed on the excitation layer, Under the irradiation of external excitation light, exciting different shades of light, so that the reflective projection screen can emit different primary colors of light under the illumination of external excitationlight, External excitation light is incident on the protective layer, After passing through the protective layer and incident on the excitation layer, the excitation particles with different sizes inthe excitation layer emit different color light under the excitation of the external excitation light, and incident on the reflection layer, the light reflected by the reflection layer excites the excitation particles in the layer to emit color light again, and the color light emits out of the reflection projection screen after passing through the protective layer. A projection system provided bythe present disclosure includes the above-described reflective projection screen. Another projection system provided by the present disclosure includes a transmissive projection screen.

Description

technical field [0001] The present disclosure 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] With the development of laser technology, laser projection systems are more and more widely used in households, governments, enterprises and other fields. A laser projection system typically includes a laser projection device and a projection screen. Generally, laser projection equipment forms three primary color lights of red, blue and green through the timing cooperation between DMD (Digital Micromirror Device, digital micromirror device) and laser light source, thereby forming a full-color image and projecting it onto a transmissive projection screen Or on a reflective projection screen. That is, the three primary colors are formed by the projection equipment, and whether it is a reflective projection screen or a transmissive projection screen tha...

AI Technical Summary

Problems solved by technology

That is, the three primary colors are formed by the projection equipment, and whether it is a reflective projection screen or a transmissive projection screen that mainly suppresses ambient light, they cannot emit light and form three primary colors. The output of light, the complexity of the whole system is high, and the design of key components is difficult

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