Back-lit projection screen

摘要

A transparent back-lit projection screen which as the only screen section has a lens system for the paralleling of light coming from behind, and where the foremost screen element has a lens structure distinguished in that the light-impermeable bulges on the screen element (22) have physical contact with a light-permeable face (14) where it applies that the thickness of the face T2 is greater than the thickness of the screen T1.<IMAGE>