Abstract: The present application discloses a ceiling-mount air disinfector, i.e., an air disinfection troffer, including: a housing; a first air outlet and a first air inlet respectively near two opposing ends of a side of the housing; a filter covering the first air inlet; a cross flow fan located near the first air outlet, and an air disinfection apparatus disposed in the housing including an ultraviolet disinfection mechanism and an air rectifying chamber, said air rectifying chamber including a plurality of air ducts configured in parallel. In operation, ultraviolet light and air flow are introduced into the air ducts, traveling toward each other along a long side of the air ducts so that maximized air-light interaction time is achieved for the best disinfection efficacy.

Abstract: The present application discloses a ceiling-mount air disinfector, i.e., an air disinfection troffer, including: a housing; a first air outlet and a first air inlet respectively near two opposing ends of a side of the housing; a filter covering the first air inlet; a cross flow fan located near the first air outlet, and an air disinfection apparatus disposed in the housing including an ultraviolet disinfection mechanism and an air rectifying chamber, said air rectifying chamber including a plurality of air ducts configured in parallel. In operation, ultraviolet light and air flow are introduced into the air ducts, traveling toward each other along a long side of the air ducts so that maximized air-light interaction time is achieved for the best disinfection efficacy.

Abstract: An UV or DUV light-emitting diode package includes: a foundation; a first metal layer, a second metal layer, and third metal layer formed on a top surface of the foundation, wherein the first metal layer and the second metal layer are electrically isolated by a first gap, the third metal layer surrounds the first and second metal layers and is electrically isolated from the first and second metal layers by a second gap; a lens attached to the top surface of the foundation, wherein a cavity is formed between the foundation and the lens; a chip disposed in the cavity, wherein an anode of the chip is electrically connected to the first metal layer and a cathode of the chip is electrically connected to the second metal layer; and a fluid encapsulate, wherein the cavity is fully or partially filled with the fluid encapsulate.

Abstract: An air disinfection device includes: a housing that includes an inlet port for taking air therethrough and a disinfection chamber that has a shell in a shape of a truncated ellipsoid. The device also includes: a disinfection head that is disposed in the inlet port and includes a light source for generating disinfection light that disinfects the air in the disinfection chamber, where the light source is located substantially on a plane where a first focal point of the truncated ellipsoid is located. The disinfection head further includes a fan for taking the air through the inlet port to the disinfection chamber and a filter for filtering the air. The device further includes a power source electrically coupled to the disinfection head and configured to provide electrical power for the disinfection head.

Abstract: A DUV light source module includes a print circuit board, an array of DUV light-emitting diodes (LEDs), a plurality of DUV LED drivers for driving the DUV light-emitting diodes, and a pair of electrical connectors for connecting the DUV LED drivers hence the DUV light-emitting diodes to a power source, and A DUV light source device includes the DUV light source module, a reflector, a heat sink, a heat pipe, a radiator and a fan.

Abstract: A fluid conduit disinfector includes a conduit with a fluid disinfection channel defined by inner side surface of the conduit, wherein the inner side surface of the conduit is reflective with a germicidal ultraviolet (GUV) light reflectance R of 50%-99%; a GUV light source for emitting GUV light into the fluid disinfection channel; a fan for forcing a fluid to be disinfected to flow through the fluid disinfection channel, and a filter for filtering particles from the fluid. The fluid disinfection channel may include a first section, a second section and a third section, wherein the first section has a cylindrical shape with a first diameter, the third section has a cylindrical shape with a third diameter larger than the first diameter, the second section has a truncated conical shape and is positioned between the first section and the third section.

Abstract: An UV or DUV light-emitting diode package includes: a foundation; a first metal layer, a second metal layer, and third metal layer formed on a top surface of the foundation, wherein the first metal layer and the second metal layer are electrically isolated by a first gap, the third metal layer surrounds the first and second metal layers and is electrically isolated from the first and second metal layers by a second gap; a lens attached to the top surface of the foundation, wherein a cavity is formed between the foundation and the lens; a chip disposed in the cavity, wherein an anode of the chip is electrically connected to the first metal layer and a cathode of the chip is electrically connected to the second metal layer; and a fluid encapsulate, wherein the cavity is fully or partially filled with the fluid encapsulate.

Abstract: A DUV light source module includes a print circuit board, an array of DUV light-emitting diodes (LEDs), a plurality of DUV LED drivers for driving the DUV light-emitting diodes, and a pair of electrical connectors for connecting the DUV LED drivers hence the DUV light-emitting diodes to a power source, and A DUV light source device includes the DUV light source module, a reflector, a heat sink, a heat pipe, a radiator and a fan.

Abstract: An air disinfection device includes: a housing that includes an inlet port for taking air therethrough and a disinfection chamber that has a shell in a shape of a truncated ellipsoid. The device also includes: a disinfection head that is disposed in the inlet port and includes a light source for generating disinfection light that disinfects the air in the disinfection chamber, where the light source is located substantially on a plane where a first focal point of the truncated ellipsoid is located. The disinfection head further includes a fan for taking the air through the inlet port to the disinfection chamber and a filter for filtering the air. The device further includes a power source electrically coupled to the disinfection head and configured to provide electrical power for the disinfection head.

Abstract: An air disinfection device includes: a housing including an inlet port and a disinfection chamber that has a shape of a frustum; and a disinfection head disposed in the inlet port and including a fan for taking air into the housing, a filter for filtering the air; and a light source for generating disinfection light that forms a light frustum and disinfects the air in the disinfection chamber. The air disinfection device further includes a power source that provides electrical power for the disinfection head. The light source is arranged so that the light frustum is coaxial with the chamber frustum, and the light and chamber frusta diverge along the same direction. The lateral surface of the light frustum can coincide with the inner lateral surface of the disinfection chamber and the entire portion of a space defined by the disinfection chamber is located within the light frustum.

Abstract: A fluid conduit disinfector includes a conduit with a fluid disinfection channel defined by inner side surface of the conduit, wherein the inner side surface of the conduit is reflective with a germicidal ultraviolet (GUV) light reflectance R of 50%-99%; a GUV light source for emitting GUV light into the fluid disinfection channel; a fan for forcing a fluid to be disinfected to flow through the fluid disinfection channel, and a filter for filtering particles from the fluid. The fluid disinfection channel may include a first section, a second section and a third section, wherein the first section has a cylindrical shape with a first diameter, the third section has a cylindrical shape with a third diameter larger than the first diameter, the second section has a truncated conical shape and is positioned between the first section and the third section.

Abstract: An air disinfection device includes: a housing including an inlet port and a disinfection chamber that has a shape of a frustum; and a disinfection head disposed in the inlet port and including a fan for taking air into the housing, a filter for filtering the air; and a light source for generating disinfection light that forms a light frustum and disinfects the air in the disinfection chamber. The air disinfection device further includes a power source that provides electrical power for the disinfection head. The light source is arranged so that the light frustum is coaxial with the chamber frustum, and the light and chamber frusta diverge along the same direction. The lateral surface of the light frustum can coincide with the inner lateral surface of the disinfection chamber and the entire portion of a space defined by the disinfection chamber is located within the light frustum.

Abstract: Disinfection apparatus having submersible disinfection devices for disinfecting fluid. The disinfection apparatus includes: a pipe having one or more linear segments; one or more disinfection devices installed on the pipe, each of the one or more disinfection devices generating light for disinfecting fluid in a linear segment of the pipe; and a controller electrically coupled to the one or more disinfection devices and controlling the one or more disinfection devices. Another embodiment of the disinfecting apparatus includes; side and bottom walls and a lid that define an enclosed chamber; an inlet and outlet for communicating fluid to the enclosed chamber; a plurality of disinfection devices disposed on the side wall, each of the plurality of disinfection devices generating light for disinfecting fluid inside the enclosed chamber; and a controller electrically coupled to the plurality of disinfection devices and controlling the plurality of disinfection devices.

Abstract: Fluid disinfection apparatus for disinfecting liquid. The fluid disinfection apparatus includes: a first light source assembly for generating disinfection light that has a shape of a frustum; and a container for holding fluid therein. The container includes a first frustum shell defining a space surrounded by the top, base, and inner lateral surface thereof, wherein the inner lateral surface of the first frustum shell is substantially identical to a lateral surface of the frustum of the disinfection light and wherein the first light source assembly is disposed over the top of the first frustum shell so that the entire portion of the space is substantially located within the frustum of the disinfection light.

Abstract: Fluid disinfection apparatus for disinfecting liquid. The fluid disinfection apparatus includes: a first light source assembly for generating disinfection light that has a shape of a frustum; and a container for holding fluid therein. The container includes a first frustum shell defining a space surrounded by the top, base, and inner lateral surface thereof, wherein the inner lateral surface of the first frustum shell is substantially identical to a lateral surface of the frustum of the disinfection light and wherein the first light source assembly is disposed over the top of the first frustum shell so that the entire portion of the space is substantially located within the frustum of the disinfection light.

Abstract: Disinfection apparatus having submersible disinfection devices for disinfecting fluid. The disinfection apparatus includes: a pipe having one or more linear segments; one or more disinfection devices installed on the pipe, each of the one or more disinfection devices generating light for disinfecting fluid in a linear segment of the pipe; and a controller electrically coupled to the one or more disinfection devices and controlling the one or more disinfection devices. Another embodiment of the disinfecting apparatus includes; side and bottom walls and a lid that define an enclosed chamber; an inlet and outlet for communicating fluid to the enclosed chamber; a plurality of disinfection devices disposed on the side wall, each of the plurality of disinfection devices generating light for disinfecting fluid inside the enclosed chamber; and a controller electrically coupled to the plurality of disinfection devices and controlling the plurality of disinfection devices.

Abstract: Disinfection apparatus having submersible disinfection devices for disinfecting fluid. The disinfection apparatus includes: a pipe having one or more linear segments; one or more disinfection devices installed on the pipe, each of the one or more disinfection devices generating light for disinfecting fluid in a linear segment of the pipe; and a controller electrically coupled to the one or more disinfection devices and controlling the one or more disinfection devices. Another embodiment of the disinfecting apparatus includes; side and bottom walls and a lid that define an enclosed chamber; an inlet and outlet for communicating fluid to the enclosed chamber; a plurality of disinfection devices disposed on the side wall, each of the plurality of disinfection devices generating light for disinfecting fluid inside the enclosed chamber; and a controller electrically coupled to the plurality of disinfection devices and controlling the plurality of disinfection devices.

Abstract: Submersible devices for disinfecting liquid. The device includes a cap having a hollow cylindrical body and a heat sink that is disposed inside the cap, detachably secured to the cap and includes a cavity therein. The device further includes a light source package disposed inside the cavity of the heat sink and configured to generate disinfecting light; a window disposed on the heat sink and formed of material that passes through the disinfecting light generated by the light source package; a flange nut disposed outside the cap and detachably secured to the cap; and a sealing mechanism for preventing liquid from leaking into the cavity. The heat sink is configured to transfer the heat energy generated by the light source package to the cap and flange nut.

Abstract: Disinfection apparatus having submersible disinfection devices for disinfecting fluid. The disinfection apparatus includes: a pipe having one or more linear segments; one or more disinfection devices installed on the pipe, each of the one or more disinfection devices generating light for disinfecting fluid in a linear segment of the pipe; and a controller electrically coupled to the one or more disinfection devices and controlling the one or more disinfection devices. Another embodiment of the disinfecting apparatus includes; side and bottom walls and a lid that define an enclosed chamber; an inlet and outlet for communicating fluid to the enclosed chamber; a plurality of disinfection devices disposed on the side wall, each of the plurality of disinfection devices generating light for disinfecting fluid inside the enclosed chamber; and a controller electrically coupled to the plurality of disinfection devices and controlling the plurality of disinfection devices.