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Review of SMS design methods and real world applications
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Paper Abstract

The Simultaneous Multiple Surfaces design method (SMS), proprietary technology of Light Prescription Innovators (LPI), was developed in the early 1990's as a two dimensional method. The first embodiments had either linear or rotational symmetry and found applications in photovoltaic concentrators, illumination optics and optical communications. SMS designed devices perform close to the thermodynamic limit and are compact and simple; features that are especially beneficial in applications with today's high brightness LEDs. The method was extended to 3D "free form" geometries in 1999 that perfectly couple two incoming with two outgoing wavefronts. SMS 3D controls the light emitted by an extended light source much better than single free form surface designs, while reaching very high efficiencies. This has enabled the SMS method to be applied to automotive head lamps, one of the toughest lighting tasks in any application, where high efficiency and small size are required. This article will briefly review the characteristics of both the 2D and 3D methods and will present novel optical solutions that have been developed and manufactured to meet real world problems. These include various ultra compact LED collimators, solar concentrators and highly efficient LED low and high beam headlamp designs.

Paper Details

Date Published: 29 September 2004
PDF: 13 pages
Proc. SPIE 5529, Nonimaging Optics and Efficient Illumination Systems, (29 September 2004); doi: 10.1117/12.561336
Show Author Affiliations
Oliver Dross, Light Prescriptions Innovators Europe (Spain)
Ruben Mohedano, Light Prescriptions Innovators Europe (Spain)
Pablo Benitez, Light Prescriptions Innovators Europe (Spain)
Juan Carlos Minano, Light Prescriptions Innovators Europe (Spain)
Julio Chaves, Light Prescriptions Innovators, LLC (United States)
Jose Blen, ETSI Telecomunicacion/Univ. Politecnica de Madrid (Spain)
Maikel Hernandez, Light Prescriptions Innovators Europe (Spain)
Fernando Munoz, ETSI Telecomunicacion/Univ. Politecnica de Madrid (Spain)

Published in SPIE Proceedings Vol. 5529:
Nonimaging Optics and Efficient Illumination Systems
Roland Winston; R. John Koshel, Editor(s)

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