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Proceedings Paper

Ultra-slim collimator with an inverse design
Author(s): Emil Aslanov; Nikolay Petrov; Alexey Borodulin; Georgy Tananaev
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Paper Abstract

Original construction is proposed to collimate light into a narrow beam. The solution is very compact and provides high efficiency. Two elements are used. Freeform reflector and a plate of PMMA with a special pyramid structure on the first surface. LED source is mounted in a plastic plate and emits light into opposite direction. After reflection from freeform reflector light beam suffers TIR in plastic plate and is collimated with a very high efficiency into desired direction. Thickness of proposed design is about 5 mm. Efficiency and divergence depends on the size of emitting area and diode's package size. For diode with a size of emitting area of 2 mm and a package size of 6 mm last ones were 88% and 7 degree.

Paper Details

Date Published: 23 September 2011
PDF: 8 pages
Proc. SPIE 8170, Illumination Optics II, 81700U (23 September 2011); doi: 10.1117/12.906161
Show Author Affiliations
Emil Aslanov, LG Electronics Inc. (Russian Federation)
Nikolay Petrov, LG Electronics Inc. (Russian Federation)
Alexey Borodulin, LG Electronics Inc. (Russian Federation)
Georgy Tananaev, LG Electronics Inc. (Russian Federation)


Published in SPIE Proceedings Vol. 8170:
Illumination Optics II
Tina E. Kidger; Stuart David, Editor(s)

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