Laser & Optoelectronics Progress, Volume. 48, Issue 12, 122201(2011)
Design of Illumination System of Laser Projector using GRIN Lens
Illumination system is the key factor influencing both the luminous efficiency and the size of the optical engine of a projector. The traditional illumination system aims at the collection and distribution only for Lambert source, failing to radically overcome the disadvantages of low luminous efficiency or big size. A design in illumination system using Gradient-Index (GRIN) lens arrays for single chip digital light processing (DLP) laser projector is introduced. The complex optical components of traditional illumination system are substituted by single-stage lens. Also, the optical performance is simulated and evaluated by the ray tracing software. The results show that the luminous efficiency of the entire illumination system is 69.5%, the uniformity of illumination is 90.9%, and the volume is only 3.06 cm3, reaching the goal of improving the luminous efficiency and reducing the size of optical engine.
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Rui Dawei, Lin Zulun, Qi Kangcheng, Liu Yi, Li Guodong. Design of Illumination System of Laser Projector using GRIN Lens[J]. Laser & Optoelectronics Progress, 2011, 48(12): 122201
Category: Optical Design and Fabrication
Received: Jul. 20, 2011
Accepted: --
Published Online: Oct. 11, 2011
The Author Email: Dawei Rui (davyray@163.com)