Illumination – Light modifier – Refractor
Reexamination Certificate
2007-03-20
2007-03-20
Quach-Lee, Y. My (Department: 2875)
Illumination
Light modifier
Refractor
C362S244000, C362S332000, C362S333000
Reexamination Certificate
active
11076439
ABSTRACT:
A lens comprising a transparent member having at least two surfaces, and a Fresnel lens surface provided on each of the two surfaces of the transparent member, the transparent member including a generally plate-like shape having a first surface and a second surface opposing the first surface, the Fresnel lens surface being provided on each of the first and second surfaces of the transparent member.
REFERENCES:
patent: 3797915 (1974-03-01), Land et al.
patent: 5160192 (1992-11-01), Sugawara
patent: 5490049 (1996-02-01), Montalan et al.
patent: 5588743 (1996-12-01), Mayo et al.
patent: 6084670 (2000-07-01), Yamazaki et al.
patent: 2004/0149940 (2004-08-01), Buisker et al.
patent: 02010394 (1990-01-01), None
Citizen Electronics Co. Ltd.
Quach-Lee Y. My
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