Illumination system

Details Illumination system Illumination system

1996-08-15

1998-04-28

Dority, Carroll B.

Illumination

Light source and modifier

Including selected wavelength modifier

362347, 362800, 313512, 359884, F21V 900

Patent

active

057436290

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.

REFERENCES:
patent: 1966059 (1934-07-01), Chiera
patent: 4298005 (1981-11-01), Mutzhas
patent: 4385344 (1983-05-01), Gosner
patent: 4810937 (1989-03-01), Havel
patent: 5083252 (1992-01-01), McGuire
patent: 5144540 (1992-09-01), Hayes
patent: 5241457 (1993-08-01), Sasajima et al.

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