Optical: systems and elements – Lens – With multipart element
Reexamination Certificate
2007-07-31
2007-07-31
Sugarman, Scott J. (Department: 2873)
Optical: systems and elements
Lens
With multipart element
C359S743000
Reexamination Certificate
active
10900313
ABSTRACT:
A refractive Fresnel lens part is provided on an upper surface of a plate-like lens at a central portion. A reflective Fresnel lens part is provided on a lower surface of the plate-like lens at a peripheral portion.
REFERENCES:
patent: 4936657 (1990-06-01), Tejima et al.
patent: 62276502 (1987-12-01), None
patent: 05164906 (1993-06-01), None
Citizen Electronics Co. Ltd.
Dennison, Schultz & MacDonald
Sugarman Scott J.
LandOfFree
Fresnel lens and an illuminating device provided with the... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fresnel lens and an illuminating device provided with the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fresnel lens and an illuminating device provided with the... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3795388