Pupillary efficient lighting system

Details Pupillary efficient lighting system Pupillary efficient lighting system

1989-04-14

1991-05-14

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Plural load device systems

Plural discharge device loads

315151, 315158, 315294, H05B 3702, H05B 4116

Patent

active

050159240

ABSTRACT:
A lighting system having at least two independent lighting subsystems each with a different ratio of scotopic illumination to photopic illumination. The radiant energy in the visible region of the spectrum of the lighting subsystems can be adjusted relative to each other so that the total scotopic illumination of the combined system and the total photopic illumination of the combined system can be varied independently. The dilation or contraction of the pupil of an eye is controlled by the level of scotopic illumination and because the scotopic and photopic illumination can be separately controlled, the system allows the pupil size to be varied independently of the level of photopic illumination. Hence, the vision process can be improved for a given level of photopic illumination.

REFERENCES:
patent: 3821576 (1974-06-01), Larson
patent: 3965388 (1976-06-01), Brisk
patent: 4234820 (1980-11-01), Widmayer
patent: 4277728 (1981-07-01), Stevens
patent: 4399492 (1983-08-01), Kolesar
"Pupillary Size Differences Under Incandescent and High Pressure Solium Lamps", Journal of the Illuminating Engineering Society, Winter--87, by: S. M. Berman et al.

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