Optics: image projectors – Unitary plural refracting surfaces
Reexamination Certificate
2006-07-20
2010-10-12
Epps, Georgia Y (Department: 2878)
Optics: image projectors
Unitary plural refracting surfaces
Reexamination Certificate
active
07810931
ABSTRACT:
A light source apparatus, including: an array light source in which a plurality of emission light sources is arranged; a divergence characteristic controller disposed corresponding to the array light source and configured to control a divergence characteristic of each of the emission light sources of the array light source; and a focusing optical element configured to control a directivity of light emitted from each of the emission light sources of the array light source, and the array light source, the divergence characteristic controller, and the focusing optical element are arranged in this order in a direction of emission from the array light source, and a following formula is satisfied:in-line-formulae description="In-line Formulae" end="lead"?0.067≦L/f<1.1in-line-formulae description="In-line Formulae" end="tail"?where an effective diagonal length of the array light source is L and a focal distance of the focusing optical element is f.
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“The Optical Efficiency of LCD Projector Systems”, Optical and Electro-Optical Engineering Contact, vol. 37, No. 9, 1999, pp. 606-614.
“The Optical Efficiency of LCD Projector Systems”, Optical and Electro-Optical Engineering Contact, vol. 37, No. 9, 1999, pp. 606-614.
Kawamura Atsushi
Tatsuno Hibiki
Epps Georgia Y
Le Bao-Luan
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Ricoh & Company, Ltd.
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