AN OPTICAL DEVICE FOR AN IMPROVED LIGHTING SYSTEM FOR SIMULATING NATURAL LIGHTING IN TWO HALF-SPACES

摘要

An optical device including: a number of reflecting portions (41; 106; 206; 306; 606) and a number of transmitting portions (42; 105; 210; 310, 311; 410; 510; 610; 710; 210, 1210; 410, 2410; 510, 3510) which receive respective sub- portions of a beam of direct visible light, the transmitting portions being laterally staggered with respect to the reflecting portions. Each reflecting portion reflects the respective sub-portion of beam of direct visible light, thereby generating a corresponding direct reflected beam (BR1; BR1"); each transmitting portion is light- transmitting, so that at least part of the respective sub- portion of beam of direct visible light passes through the transmitting portion, thereby generating a corresponding direct transmitted beam (BT2, BT2"). The optical device further includes a diffused-light generator (210, 310; 311; 410, 466; 510; 611; 611, 710; 210, 1210; 410, 466, 2410, 2466; 510, 3510) which actively and/or passively generates a diffused component (ARDL, RDL).