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:
Jun. 30, 2009
Filed:
May. 25, 2006
Mark T. Wedell, Wilmington, NC (US);
Mark T. Wedell, Wilmington, NC (US);
Ansaldo STS USA, Inc., Pittsburgh, PA (US);
Abstract
An improved LED signaling device employing a number of LEDs arranged in a specific pattern. At least some of the LEDs are received in a corresponding reflective cavity with an associated output angle. The LED signaling device also employs first and second lenses. The first lens collects the light emitted by the LEDs and disperses the light such that the second lens is flooded. The second lens collects the light dispersed by the first lens and collimates the light. The type of LEDs used, their specific pattern, the specific output angles of their corresponding reflective cavities, and the combination of the first and second lenses insure that the LED signaling device meets or exceeds the minimum luminous output intensity requirements and uniformity requirements.