20 January 2012 Optical design in illumination system of digital light processing projector using laser and gradient-index lens
Author Affiliations +
Abstract
A novel structure of illumination system based on laser sources and gradient-index (GRIN) lens arrays for single-plate digital light processing (DLP) projector is proposed. Under the evaluation of light collection efficiency and illumination uniformity, we designed two different architectures of GRIN lens arrays: the unit lens cross section being either square or circular. Also, we designed the one-to-one coupling mechanism between GRIN lens array and Gaussian beam array. By means of three-dimensional modeling and ray tracing, we simulated the optical characteristics of illumination system, and the optical parameters are evaluated. Results show that the total light collection efficiency is 37.9%, the illumination uniformity is 89.7% and the volume is only 12.4 cm3. Thus we improved optical characteristics and reduced the physical dimension of DLP optical engine.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE)
Dawei Rui, Zulun Lin, Kang-Cheng Qi, Wenbin Chen, "Optical design in illumination system of digital light processing projector using laser and gradient-index lens," Optical Engineering 51(1), 013004 (20 January 2012). https://doi.org/10.1117/1.OE.51.1.013004 . Submission:
JOURNAL ARTICLE
8 PAGES


SHARE
RELATED CONTENT

Using the toroidal and cylindrical lenses to project the RGB...
Proceedings of SPIE (September 25 2013)
A study of optical design for optics of high contrast...
Proceedings of SPIE (September 21 2011)
Polyplanar optical display
Proceedings of SPIE (July 01 1997)
Advanced multiscopic display via temporal multiplexing
Proceedings of SPIE (March 09 2007)

Back to Top