Optical: systems and elements – Lens – Anamorphic
Reexamination Certificate
2006-05-23
2006-05-23
Mack, Ricky (Department: 2873)
Optical: systems and elements
Lens
Anamorphic
C359S668000
Reexamination Certificate
active
07050238
ABSTRACT:
An optical system includes a plurality of separate light sources with a number M of the light sources arranged in a first direction and a number N of the light sources arranged in a second direction. Each of the light sources has an asymmetric light emission area. The light sources are arranged so that a light beam passing a collimator optical element has a beam width in the first direction greater than a beam width in the second direction. An anamorphic optical element is arranged to have a beam-size reduction rate in the first direction greater than a beam-size reduction rate in the second direction and converts the plurality of light beams from the light sources into a light beam having a symmetric beam cross-section. A light-condensing optical element condenses the light beam having the symmetric beam cross-section into a light receiving element, and the anamorphic optical element includes an array of a number of prisms integrally arranged.
REFERENCES:
patent: 6754246 (2004-06-01), Okada
patent: 6801375 (2004-10-01), Hayashide
patent: 6813303 (2004-11-01), Matsuda et al.
patent: 2848279 (1998-11-01), None
patent: 3228098 (2001-09-01), None
patent: 2002-202442 (2002-07-01), None
Anbe Hiroyuki
Kudou Mitsuhiro
Kusaka Katsuya
Odashima Masaharu
Oikawa Ichiroh
Dinh Jack
Mack Ricky
Ricoh Optical Industries Co., Ltd.
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