Microlens Array Homogenizer for Laser Illuminated Projector


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Laser light source is a potential illumination light source for non-emissive display applications, especially for liquid crystal projection displays, due to its requirement of low etendue source and highly polarized light. In order to make a conversion from a circular Gaussian beam profile to a rectangular uniform distribution, a microlens array has been proposed as a homogenizer. The analytical and experimental results show that the microlens array with a pitch of 100um under laser beam illumination works as a diffractive element, and a promising uniformity can be obtained with a stack of two microlens array.



Key Engineering Materials (Volumes 364-366)

Edited by:

Guo Fan JIN, Wing Bun LEE, Chi Fai CHEUNG and Suet TO




C. H. Chen et al., "Microlens Array Homogenizer for Laser Illuminated Projector", Key Engineering Materials, Vols. 364-366, pp. 143-147, 2008

Online since:

December 2007




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