Illumination – Light source and modifier – Including selected wavelength modifier
Patent
1990-04-25
1991-09-03
Husar, Stephen F.
Illumination
Light source and modifier
Including selected wavelength modifier
362268, 362319, F21V 900
Patent
active
050459830
ABSTRACT:
A lighting system is described having an electronic means for controlling the color, color temperature, magnification and focus in response to predetermined signals from a computerized system. A wide spectrum light beam having a wavelength of from 380 nm to 700 nm is passed through a heat absorbing condenser to control the predetermined color temperature thereof and said portion of the beam is separated into a first color beam having a wavelength of from 445 nm to 450 nm, a second color beam having a wavelength of from 555 nm to 570 nm and a third color beam having a wavelength of from 525 nm to 535 nm. The separated color beams are maintained at substantially equal focal length an the intensity of the respective color beams varied in response to an electronic signal. The color beams are then combined to form a composite beam of predetermined color. The colour and intensity of the resulting beam is thereby more accurately predetermined.
REFERENCES:
patent: 3818216 (1974-06-01), Larraburu
patent: 4602321 (1986-07-01), Bornhorst
patent: 4620791 (1986-11-01), Combastet
Fors Arne I.
Husar Stephen F.
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