The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 1982
Filed:
Sep. 29, 1980
David W Holdridge, Fullerton, CA (US);
Swedlow, Inc., Garden Grove, CA (US);
Abstract
A focusing reflector comprises a sheet of transparent material such as acrylic or the like formed to have a smooth-surfaced upper face and a lower face with a modified corner cube geometry. The modified corner cube geometry includes a plurality of multifaceted reflective elements arranged in a hexagonal close pack relationship with each element being defined by three planar facets forming a pyramid-shaped structure. Each element has two of its facets oriented mutually perpendicularly, and the third facet is oriented with respect to the perpendicular facets at a predetermined angle other than ninety degrees for redirection of light incident upon the upper sheet face toward a prescribed focal zone. The angular orientation of the third facet of each element is a function of the location of the element with respect to the position of the focal zone, together with the desired size and shape of the focal zone.