Optical: systems and elements – Collimating of light beam
Reexamination Certificate
2005-11-29
2005-11-29
Mack, Ricky (Department: 2873)
Optical: systems and elements
Collimating of light beam
C359S619000, C359S457000, C359S742000
Reexamination Certificate
active
06970296
ABSTRACT:
A signaling device includes a light source and a Fresnel optical system. Constructed in the form of ellipses on its rear side, the Fresnel optical system has defocusing lenses that form elongated focal areas in the focal plane. Despite the use of a light source of small lateral extent, the signaling device has a radiation characteristic with a large aperture angle.
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Balashov et al., Illumination Device for Generating Non-Symmetric Light Beam (PCT), Optical Lens Array and Optical Lens, WO99/50596, Oct. 7, 1999.
Mack Ricky
Osram GmbH
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