High intensity planar light source

Details High intensity planar light source High intensity planar light source

1990-11-21

1992-02-11

Lazarus, Ira S.

Illumination

Display backlight

Lcd backlight

362252, 362294, G09F 1304

Patent

active

050880128

ABSTRACT:
A high intensity planar light source utilizes an array of halogen lamps to produce high intensity, flat field and stable color temperature illumination. The halogen lamps are arrayed in a rectangular area with a nonlinear distribution which locates a higher density of lamps in the corners of the array than elsewhere in the peripheral regions of the area. The array of lamps is energized by a DC power supply and series circuitry is employed to make the failure of one lamp easily detected.

REFERENCES:
patent: 3356839 (1967-12-01), Mehess et al.
patent: 3808416 (1974-04-01), Pottratz
patent: 4184194 (1980-01-01), Shofu
patent: 4267489 (1981-05-01), Mozohashi
patent: 4791540 (1988-12-01), Dreyer, Jr. et al.
patent: 4943689 (1990-07-01), Siefer et al.

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