TY - JOUR
AU - Lu, Wei
AB - Recently high brightness LED developed rapidly and would be a suitable replacement for hand-held projector compared with UHP lamp. Generally, uniformity and low etendue is required in illumination system of projection display, while the emitting distribution of HB-LED always has non-uniformity and large view angle. In this paper, we have designed a preliminary illuminator consisted of two curved reflective fly"s eyes especially for the lighting characteristic of HB-LED. By means of the asymmetric configuration we can get the small exit ray angle which reduces the etendue of illumination system. Because of reflective system, the embodiment is shorter than 20 mm. The uniformity is above 80% and the efficiency of the illuminator is better than 75%.
TI - A novel LED illumination system used in hand-held projector
JF - Proceedings of SPIE
DO - 10.1117/12.574315
DA - 2005-02-10
UR - https://www.deepdyve.com/lp/spie/a-novel-led-illumination-system-used-in-hand-held-projector-TkXf1RCkDr
SP - 103
EP - 107
VL - 5638
IS - 1
DP - DeepDyve
ER -