On a partially color corrected illumination system

Holger Weigand; Sascha Heib

doi:10.1117/12.2312640

28 May 2018 On a partially color corrected illumination system

Holger Weigand, Sascha Heib

Proceedings Volume 10693, Illumination Optics V; 106930V (2018) https://doi.org/10.1117/12.2312640
Event: SPIE Optical Systems Design, 2018, Frankfurt, Germany

Abstract

In general lighting and some applications of automotive lighting, there are advanced requirements on light distributions. Illuminance should have a uniform course at different distances from the luminaire. As well disturbing colored borders of the distribution should be prevented. In the case of lens-based or catadioptric illumination systems, the light guidance takes place wholly or partly via refractive optical elements which leads to an inherent chromatic aberration. In the area of imaging optics, lenses with negative and positive powers made from different materials are combined for chromatic correction. If optical glasses are available for realization, systems with very good color correction can be designed. For cost reasons, however, classic concepts using optical glasses are excluded. Marketable materials are optical polymers, with low refractive index and midrange Abbe number. To understand the genesis of chromatic aberration, it is crucial to analyse every possible light path of the system. If a system has enough free parameters, one can optimize light paths due to their impact on chromatic aberration. Our goal is, to follow this approach concerning a purely refractive aspherical lens system without the usage of scattering structures.

Citation Download Citation

Holger Weigand and Sascha Heib "On a partially color corrected illumination system", Proc. SPIE 10693, Illumination Optics V, 106930V (28 May 2018); https://doi.org/10.1117/12.2312640

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