Mr. Sheldon S. Sillyman Profile

Sheldon S. Sillyman

Vice President of Operations at Central Lighting Co

SPIE Involvement:

Author

Publications (9)

Proceedings Article | 10 April 2005 Paper

Dual paraboloid reflector and light pipe based systems for projection displays

Kenneth Li, Sheldon Sillyman, Seiji Inatsugu

Proceedings Volume 5740, (2005) https://doi.org/10.1117/12.602369

KEYWORDS: Reflectors, Lamps, Imaging systems, Optical components, Polarization, Manufacturing, Light sources, Beam splitters, Televisions, Projection systems

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Proceedings Article | 22 October 2004 Paper

Light-pipe-based optical train and its applications

Kenneth Li, Sheldon Sillyman, Seiji Inatsugu

Proceedings Volume 5524, (2004) https://doi.org/10.1117/12.559833

KEYWORDS: Reflectors, Prisms, Imaging systems, Polarization, Beam splitters, Lamps, Liquid crystal on silicon, Projection systems, LCDs, Lenses

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Proceedings Article | 29 September 2004 Paper

Source numerical aperture control for efficient light emission from notched, side-lighting fiber optics

Sheldon Sillyman, Kenneth Li, Seiji Inatsugu

Proceedings Volume 5529, (2004) https://doi.org/10.1117/12.559858

KEYWORDS: Reflectors, Fiber optics, Light, Lamps, Waveguides, Light sources and illumination, Cladding, Fiber optic illuminators, Scattering, Fiber optics tests

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Proceedings Article | 29 September 2004 Paper

Design and optimization of tapered light pipes

Kenneth Li, Seiji Inatsugu, Sheldon Sillyman

Proceedings Volume 5529, (2004) https://doi.org/10.1117/12.559844

KEYWORDS: Reflectors, Polarization, Lamps, Prisms, Imaging systems, Solids, Nonimaging optics, Glasses, Compound parabolic concentrators, Liquid crystal on silicon

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SPIE Journal Paper | 1 July 2004

Optimization of dual paraboloidal reflector and polarization system for displays using a ray-tracing model

Kenneth Li, Sheldon Sillyman, Seiji Inatsugu

OE, Vol. 43, Issue 07, (July 2004) https://doi.org/10.1117/12.10.1117/1.1751131

KEYWORDS: Reflectors, Prisms, Polarization, Lamps, Imaging systems, Retroreflectors, Optimization (mathematics), Wave plates, Optical engineering, Light scattering

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Proceedings Article | 28 May 2004 Paper

Novel projection engine with dual paraboloid reflector and polarization recovery systems

Kenneth Li, Sheldon Sillyman, Seiji Inatsugu

Proceedings Volume 5289, (2004) https://doi.org/10.1117/12.541157

KEYWORDS: Reflectors, Polarization, Prisms, Beam splitters, Imaging systems, Lamps, LCDs, Optical components, Optical filters, Projection systems

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Proceedings Article | 28 May 2004 Paper

Etendue dependent optimization for coupling with dual paraboloid reflectors for projection display

Kenneth Li, Seiji Inatsugu, Sheldon Sillyman

Proceedings Volume 5289, (2004) https://doi.org/10.1117/12.541160

KEYWORDS: Reflectors, Lamps, Scattering, Imaging systems, Reflective displays, Light scattering, Computer simulations, Distortion, Superposition, Systems modeling

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Proceedings Article | 12 November 2003 Paper

Etendue efficient illumination system using dual paraboloid reflectors and lensed tapered lightpipes

Kenneth Li, Sheldon Sillyman, Seiji Inatsugu

Proceedings Volume 5186, (2003) https://doi.org/10.1117/12.506368

KEYWORDS: Reflectors, Lamps, Polarization, Beam splitters, Imaging systems, Prisms, Retroreflectors, Dielectric polarization, Light, Wave plates

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With the increased interests in mass production of LCD, LCOS and DLP microdisplay-based projectors and televisions, the image panel sizes become smaller and requires more efficient coupling of light from the source to the image panel. At the same time, the demand for high-energy efficient general illumination system also requires efficient coupling of light from a light source into fiber optics. To illuminate these smaller image panels and fibers efficiently, a patented dual paraboloid reflector system has been developed to collect and focus light from an arc lamp onto the targeted application without loss of brightness. Arc lamps with longer arc lengths can be used, which are usually easier to make and have longer life. The dual paraboloid reflector1,2 system consists of two parabolic reflectors placed symmetrically facing each other. The first parabolic reflector collects and collimates light into a parallel beam. The second parabolic reflector intercepts the parallel beam and focuses the light into a lensed rectangular tapered light pipe (TLP) resulting in a unity magnification, i.e. 1:1 imaging, with conserved brightness. Due to the unique nature of 1:1 imaging of the system, together with the retro-reflector, the folding of the arc to increase brightness will also be described. The TLP transforms the focused light into an output with the needed area, shape, and numerical aperture. It also acts as a homogenizer so that the intensity profile at the output surface is uniform and eventually provides a uniform intensity profile at the screen or at the input face of the fibers. The reflection of light twice in the dual paraboloid reflector system provides high IR and UV rejection ratios, resulting in less degradation of the optical components and fibers. ASAP models of the system and experimental results will be presented. The shape of the etendue curve also provides higher efficiency in using polarization recovery system. Several patent-pending light-pipe-based polarization recovery and recycling systems, will be discussed. Calculation and experimental results will also be presented.

Proceedings Article | 28 March 2003 Paper

Dual paraboloid reflector and polarization recycling systems for projection displays

Kenneth Li, Sheldon Sillyman, Seiji Inatsugu

Proceedings Volume 5002, (2003) https://doi.org/10.1117/12.479585

KEYWORDS: Reflectors, Lamps, Polarization, Imaging systems, Beam splitters, Liquid crystal on silicon, Polarizers, Light sources, Retroreflectors, LCDs

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Showing 5 of 9 publications

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