Title

Optimization Of Freeform Lightpipes For Light-Emitting-Diode Projectors

Abstract

Standard nonimaging components used to collect and integrate light in light-emitting-diode-based projector light engines such as tapered rods and compound parabolic concentrators are compared to optimized freeform shapes in terms of transmission efficiency and spatial uniformity. We show that the simultaneous optimization of the output surface and the profile shape yields transmission efficiency within the étendue limit up to 90% and spatial uniformity higher than 95%, even for compact sizes. The optimization process involves a manual study of the trends for different shapes and the use of an optimization algorithm to further improve the performance of the freeform lightpipe. © 2008 Optical Society of America.

Publication Date

3-1-2008

Publication Title

Applied Optics

Volume

47

Issue

7

Number of Pages

957-966

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/AO.47.000957

Socpus ID

43749099847 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/43749099847

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