Combination ultra-violet a (uva) and ultra-violet c (uvc) system for reduction and inhibition of growth of pathogens
AssigneeHelios Shield Ltd.
InventorAndrew Clark Baird Aubert
Life of this patent
Estimating the term…
Abstract
A UVA/UVC system for reducing levels, on a surface, and inhibiting further growth of at least one pathogen on said surface, wherein said system has no deleterious effects on a human, in particular on a human eye or epidermis and dermis, wherein said system includes: iv) at least one UVA light source; v) at least one UVC light source; and at least one controller connected to each of the at least one UVA light source and the at least one UVC light source, for controlling at least one parameter of each of the UVA light source and UVC light source.
Claims36
A UVA/UVC system for reducing levels, on a surface, and inhibiting further growth of at least one pathogen on said surface, wherein said system has no deleterious effects on a human, in particular on a human eye or epidermis and dermis, wherein said system comprises:
- i) at least one UVA light source;
- ii) at least one UVC light source;
- and
- iii) at least one controller connected to each of said at least one UVA light source and said at least one UVC light source, for controlling at least one parameter of each of said UVA light source and UVC light source selected from light source, light intensity, radiated power level, wavelength, exposure time and combinations thereof;
- wherein said at least one UVC light source emits UVC light to a surface for a period of time reducing the level of said harmful entity on said surface to a level that is safe to humans, and said at least one UVA light source emits UVA light to a surface for a period of time inhibiting growth of said harmful entity on said surface, such that during the time said at least one UVC light source and said at least one UVA light source is emitting on said surface, radiation levels from said at least one UVC light source and said at least one UVA light source is safe to humans;
- wherein when said at least one UVC light source is emitting UVA light to said surface, said at least one UVC light is off, and when said at least one UVA light source is emitting light to aid surface, said at least one UVC light source is off;
- wherein cycling between said at least one UVC light source and said at least one UVA light source is controlled by said at least one controller.
A method of reducing levels, on a surface, and inhibiting further growth of at least one pathogen on said surface, wherein said method has no deleterious effects on a human, in particular on a human eye or epidermis and dermis, wherein said method comprises:
- i) exposing said surface to at least one UVC light source for a period of time to reduce the level of least one pathogen on said surface;
- ii) terminating the exposure of the at least one UVC light source on said surface;
- iii) exposing said UVC exposed surface to at least one UVA light source for a period of time to inhibit growth of least one pathogen on said surface;
- iv) terminating the exposure of the at least one UVA light source on said surface;
- v) optionally repeating steps i) to iv) in order to maintain a desired level of least one pathogen on said surface.
Dependencies are inferred from the claim text.