Open AccessHigh resolution irradiance tailoring using multiple freeform surfaces
Author(s) -
Adrien Bruneton,
Axel Bäuerle,
Rolf Wester,
Jochen Stollenwerk,
Peter Loosen
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.010563
Subject(s) - optics , irradiance , nonimaging optics , ray tracing (physics) , computer science , lens (geology) , computation , reflection (computer programming) , geometrical optics , pixel , physics , algorithm , programming language
More and more lighting applications require the design of dedicated optics to achieve a given radiant intensity or irradiance distribution. Freeform optics has the advantage of providing such a functionality with a compact design. It was previously demonstrated in [Bäuerle et al., Opt. Exp. 20, 14477-14485 (2012)] that the up-front computation of the light path through the optical system (ray mapping) provides a satisfactory approximation to the problem, and allows the design of multiple freeform surfaces in transmission or in reflection. This article presents one natural extension of this work by introducing an efficient optimization procedure based on the physics of the system. The procedure allows the design of multiple freeform surfaces and can render high resolution irradiance patterns, as demonstrated by several examples, in particular by a lens made of two freeform surfaces projecting a high resolution logo (530 × 160 pixels).