Room and area disinfection utilizing pulsed light with modulated power flux and light systems with visible light compensation between pulses
First Claim
1. A method for reducing bacterial contamination on surfaces in an enclosed space which is suitable for human occupancy, wherein the method comprises:
- generating pulses of light at a frequency greater than approximately 20 Hz from a germicidal light source of a disinfection apparatus that is arranged in an enclosed space which is suitable for human occupancy; and
projecting the pulses of light to surfaces in the enclosed space at least 1.0 meter from the disinfection apparatus, wherein the pulses of light generated by the germicidal light source comprise a pulse duration and an energy flux sufficient to generate a power flux between approximately 200 W/m2 and approximately 5000 W/m2 of ultraviolet light in the wavelength range between 200 nm and 320 nm at the surfaces.
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Accused Products
Abstract
Disinfection methods and apparatuses are provided which generate pulses of germicidal light at a frequency greater than 20 Hz and project the pulses of light to surfaces at least 1.0 meter from the disinfection apparatus. The pulses of light comprise a pulse duration and an energy flux sufficient to generate a power flux between approximately 200 W/m2 and approximately 5000 W/m2 of ultraviolet light in the wavelength range between 200 nm and 320 nm at the surfaces. Other disinfection methods and apparatuses are provided which generate pulses of light comprising germicidal light and visible light from a germicidal light source and generate pulses of light from a visible light source that is distinct from the germicidal light source. The projections of visible light from the light sources produce a continuous stream of visible light or a collective stream of visible light pulsed at a frequency greater than 60 Hz.
109 Citations
13 Claims
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1. A method for reducing bacterial contamination on surfaces in an enclosed space which is suitable for human occupancy, wherein the method comprises:
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generating pulses of light at a frequency greater than approximately 20 Hz from a germicidal light source of a disinfection apparatus that is arranged in an enclosed space which is suitable for human occupancy; and projecting the pulses of light to surfaces in the enclosed space at least 1.0 meter from the disinfection apparatus, wherein the pulses of light generated by the germicidal light source comprise a pulse duration and an energy flux sufficient to generate a power flux between approximately 200 W/m2 and approximately 5000 W/m2 of ultraviolet light in the wavelength range between 200 nm and 320 nm at the surfaces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification