Rear projection screen

摘要

Rear projection screen having a lenticular lens sheet (1) and a Fresnel lens (2) facing to each other and mounted on a rectangular frame (3). In a first embodiment, the lenticular sheet (1) and the Fresnel lens (2) are attached to each other along their bottom edges (1B,2B) by means of an adhesive (9). The upper edge (1A) of the lenticular sheet is suspended to the frame (3), so that the lenticular sheet is tensed downwards by the weight (gravity) of the Fresnel lens (2), whose upper edge is free. In a second embodiment the lenticular lens sheet (11) is freely placed between a transparent front plate (10) and the Fresnel lens (12), which are both attached to the frame. Both embodiments enable the lenticular sheet to have thermal expansion without suffering surface deformations.