Room and area disinfection utilizing pulsed light with modulated power flux and light systems with visible light compensation between pulses
First Claim
1. A disinfection apparatus, comprising:
- a germicidal pulsed light source arranged within the disinfection apparatus such that germicidal light generated from the germicidal pulsed light source is projected exterior to the disinfection apparatus;
trigger voltage circuitry for applying a trigger voltage to the germicidal pulsed light source at a set frequency greater than approximately 20 Hz;
power supply circuitry;
one or more electrical charge storage devices coupled to the power supply circuitry and to the germicidal pulsed light source;
pulse duration circuitry coupled between the one or more electrical charge storage devices and the germicidal pulsed light source, wherein the one or more electrical charge storage devices and the pulse duration circuitry are configured to discharge a set amount of stored energy in a set amount of time such that energy flux of ultraviolet light in the wavelength range between 200 nm and 320 nm generated at the germicidal pulsed light source is between approximately 20 J/m2 and approximately 1000 J/m2;
an occupancy sensor for determining presence of an individual in a region extending at least 1.0 meter from the disinfection apparatus;
a processor; and
program instructions executable by the processor for inhibiting and terminating the generation of light from the germicidal pulsed light source upon the occupancy sensor detecting presence of an individual.
2 Assignments
0 Petitions
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.
-
Citations
18 Claims
-
1. A disinfection apparatus, comprising:
-
a germicidal pulsed light source arranged within the disinfection apparatus such that germicidal light generated from the germicidal pulsed light source is projected exterior to the disinfection apparatus; trigger voltage circuitry for applying a trigger voltage to the germicidal pulsed light source at a set frequency greater than approximately 20 Hz; power supply circuitry; one or more electrical charge storage devices coupled to the power supply circuitry and to the germicidal pulsed light source; pulse duration circuitry coupled between the one or more electrical charge storage devices and the germicidal pulsed light source, wherein the one or more electrical charge storage devices and the pulse duration circuitry are configured to discharge a set amount of stored energy in a set amount of time such that energy flux of ultraviolet light in the wavelength range between 200 nm and 320 nm generated at the germicidal pulsed light source is between approximately 20 J/m2 and approximately 1000 J/m2; an occupancy sensor for determining presence of an individual in a region extending at least 1.0 meter from the disinfection apparatus; a processor; and program instructions executable by the processor for inhibiting and terminating the generation of light from the germicidal pulsed light source upon the occupancy sensor detecting presence of an individual. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification