Open AccessThree-dimensional illumination system using dielectric liquid lenses
Author(s) -
Yi Lu,
Ling-Yu Tsai,
KuoCheng Huang,
Chi-Chun Tsai,
Chien-Ying Yang,
J. Andrew Yeh
Publication year - 2011
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.00a740
Subject(s) - optics , illuminance , pixel , light emitting diode , lens (geology) , tilt (camera) , materials science , diode , physics , optoelectronics , mathematics , geometry
A 25-pixel illumination system composed of a 5 × 5 dielectric liquid-lens (DLL) zoom module array, 25 light-emission diodes (LEDs), and a secondary optical lens demonstrates 3D light field manipulation. LEDs function as 2D illumination pixels while the DLL module array performs longitudinal illuminance adjustability by zooming each illumination pixel. A test on the similarity of two illuminance patterns between experiments and simulations shows a normalized cross correlation (NCC) higher than 0.8, indicating the feasibility of the system design. Also, the illumination system is further applied to correct a distorted light pattern on a 45° tilt screen as well as to perform light compensation on distance-differential objects.