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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 17 — Aug. 15, 2011
  • pp: 15750–15759

Achromatic design in the illumination system for a mini projector with LED light source

Jui-Wen Pan and Sheng-Han Lin  »View Author Affiliations

Optics Express, Vol. 19, Issue 17, pp. 15750-15759 (2011)

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We provide a novel achromatic design in the illumination system for a mini projector with an LED light source. The lateral color aberration at the corners of the DMD active area can be reduced to 0.48 μm by our compact ATIR prism. The total prism size is 4091 mm3. The spot sizes at the corner and the edge are also controlled under 198 μm. Moreover, we use a light pipe for color uniformity at the center of the DMD active area. Under the two components for color uniformity, the Δu’ v’ is well controlled under 0.016 by a 20 mm length of light pipe. The illuminance uniformity at the active area of the DMD chip is higher than 92.8%. The optical efficiency of the light pipe is 94.1%.

© 2011 OSA

OCIS Codes
(220.4830) Optical design and fabrication : Systems design
(230.3670) Optical devices : Light-emitting diodes
(220.2945) Optical design and fabrication : Illumination design

ToC Category:
Optical Design and Fabrication

Original Manuscript: May 23, 2011
Revised Manuscript: July 7, 2011
Manuscript Accepted: July 11, 2011
Published: August 2, 2011

Jui-Wen Pan and Sheng-Han Lin, "Achromatic design in the illumination system for a mini projector with LED light source," Opt. Express 19, 15750-15759 (2011)

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