Optical: systems and elements – Lens – Including a nonspherical surface
Reexamination Certificate
2006-01-31
2006-01-31
Thompson, Timothy (Department: 2873)
Optical: systems and elements
Lens
Including a nonspherical surface
C359S718000, C359S719000
Reexamination Certificate
active
06992837
ABSTRACT:
A hybrid lens and a projection optical system having the hybrid lens are provided. The projection optical system includes a hybrid lens that is positioned along an optical path between a fluorescent surface and a screen onto which light emitted from the fluorescent surface is projected to form an image. The hybrid lens includes a spherical lens and an aspherical lens formed of plastic on at least one surface of the spherical lens. Accordingly, aberration can be corrected to improve image quality.
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Hwang Gyu-hwan
Khorokhorov Alexey M.
Pozdnyakov Vadim V.
Rozhkov Oleg V.
Shirankov Alexandr F.
Samsung Electronics Co,. Ltd.
Sughrue & Mion, PLLC
Thompson Timothy
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