Screen illumination apparatus and method

Details Screen illumination apparatus and method Screen illumination apparatus and method

1999-08-17

2000-12-26

Epps, Georgia

Optical: systems and elements

Collimating of light beam

359618, 359727, 359742, 359748, G02B 2730, G02B 2710, G02B 1700, G02B 308, G02B 1302

Patent

active

061668605

ABSTRACT:
In a device for directing light longitudinally forwardly, the combination comprising a light source, and a protective, transparent envelope extending about the light source; a drum lens having a body extending about the light source and envelope, for refracting light from the source; a light reflector extending about the drum lens body, for forwardly and convergently re-directing refracted light received from the drum lens body; and a correcting lens for receiving a collimating re-directed light screened from the reflector.

REFERENCES:
patent: 5883745 (1999-03-01), Kelley
patent: 5926320 (1999-07-01), Parkyn, Jr. et al.

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