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:
Apr. 28, 1998
Filed:
Aug. 15, 1996
Robert P Helstern, Costa Mesa, CA (US);
Yusuke P Okabayashi, Costa Mesa, CA (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
An improved apparatus for illuminating a display, such as a lens, includes a source of nonwhite light of a first color at an energy level which can be perceived by the human eye. The nonwhite light of a first color is reflected from a reflector to obtain white light. In one embodiment of the invention, the nonwhite light source was a solid state device (light emitting diode) which produced blue light at a high-energy level and green and red light at relatively low energy levels with the result that the green and red light could not be perceived by a human eye simultaneously with the blue light. The light from the solid state light source was reflected from a reflector having a gold (yellow) reflecting surface. The light reflected from the reflecting surface interfered with light emitted directly form the solid state light source with a chromatic shift of light energy. The resulting light from the reflector was white light.