Light-emitting diode illumination design with a condensing sphere
JOSA A, Vol. 23, Issue 9, pp. 2295-2298 (2006)
http://dx.doi.org/10.1364/JOSAA.23.002295
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Abstract
An illumination system is described that comprises a glass or plastic sphere, an embedded light-emitting diode (LED) source, and a reflecting or scattering mirror. The rays from the LED are either refracted in the forward direction or totally internally reflected by the sphere. The mirror breaks the total internal reflection and thus sends the rays in the forward direction. The illumination pattern and efficiency of the system are analyzed. This system is extremely compact and efficient and is a good starting point for a complex illumination system design.
© 2006 Optical Society of America
OCIS Codes
(080.0080) Geometric optics : Geometric optics
(080.2740) Geometric optics : Geometric optical design
(150.2950) Machine vision : Illumination
(220.2740) Optical design and fabrication : Geometric optical design
(230.3670) Optical devices : Light-emitting diodes
ToC Category:
Optical Design and Fabrication
History
Original Manuscript: October 28, 2005
Revised Manuscript: February 8, 2006
Manuscript Accepted: February 10, 2006
Citation
Wanli Chi and Nicholas George, "Light-emitting diode illumination design with a condensing sphere," J. Opt. Soc. Am. A 23, 2295-2298 (2006)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-23-9-2295
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