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. 07, 1990
Filed:
Nov. 08, 1988
John A Vlah, Middlefield, OH (US);
Other;
Abstract
A lighting system having a light source is disposed inside the reflective inner surface of a reflector. The longitudinal profile of the reflector is a continuous curve comprised of four substantially circular arcs and a parabolic segment. A first arc lies nearest the source. A second arc having a radius of substantially 1/2 (1+.sqroot.5) times the radius of the first 'continues' the first in the sense that the arcs have the same slope at their point of contact. Likewise, a third arc having a radius of substantially 1/2 (1+.sqroot.5) times the radius of the second continues the second arc and a fourth has a radius substantial 1/2 (1+.sqroot.5) times the radius of the third. The parabolic segment continues the fourth arc and completes the profile. Internal and external reflecting means may be provided to further align and direct the exiting light.