OPTICAL ASSEMBLY FOR TELEVISION FRONT SCREEN

摘要

A television image processing device (10) for use in front of a television screen having a diagonal dimension of S, which imaging processing device comprises four panels (12 to 15) connected together to form a hollow body (11) having a substantially rectangular open front side (16) of width W and height H and a substantially rectangular open rear side (17) of width W' and height H', the separation between the front and rear open sides (16 and 17) being D and the inner sides of the panels being reflective. The image processing device (10) further comprises a front lens (18) provided extending across the open front side (16) of the body (11), the rear side (17) of the body (11) remaining open, wherein the dimensions are related according to the following formulae: (1) W = [1 + (W'/H' - beta )] . W'; (2) H = [1 + (W'/H' - beta )] . H'; (3) D = K . S; where: (i) beta = ( 2ROOT 5 - 1)/2; (ii) 0.1 < K < 0.2.