The present disclosure relates to an ultraviolet (UV) sterilization device, and more specifically, to a UV sterilization device whose radiation mode and position may be changed. The UV sterilization device includes: a sterilization unit configured to be movable up to a specific position and including a UV emission unit; a driving unit configured to move the sterilization unit; and a lens assembly including at least two different types of lenses and provided on a front surface of the UV emission unit.

The present application discloses a novel ultraviolet lamp tube, comprising an outer tube; an inner tube coaxially installed inside the outer tube; an outer electrode embedded on the outer tube; and an inner electrode installed inside the inner tube; wherein the outer surface of the inner electrode or inner tube is plated with a clutter waves coating or an inner tube coating that can reflect a desired wavelength band; and the outer sidewall of the outer tube is plated with a single-wavelength band coating that can transmit a single-wavelength band. The coating method is used for wave filtering to ensure monochromaticity of the light emitted by the light source and greatly reduce the volume of the ultraviolet lamp tube. At the same time, the ultraviolet lamp can be in a cylindrical shape to effectively increase the beam angle of the ultraviolet lamp and effectively improve the luminous efficiency of the ultraviolet lamp.

A disinfecting system and method for an enclosed space include an articulating arm moveably coupled to a structure within the enclosed space. An ultraviolet (UV) lamp is coupled to the articulating arm. The UV lamp is configured to emit UV light toward a disinfection zone within the enclosed space. The articulating arm allows the UV lamp to move relative to the disinfection zone.

The present disclosure provides an ultraviolet (UV) sterilization apparatus that is capable of changing an emission mode and/or an emission angle. The UV sterilization apparatus includes a sterilization unit configured to be movable to a predetermined position and including a UV emitter, and a driving unit configured to move the sterilization unit.

The present disclosure provides an ultraviolet (UV) sterilization apparatus that has improved heat dissipation performance and is capable of being changed in position. The UV sterilization apparatus includes a sterilization unit configured to be movable to a predetermined position and including a UV emitter, a driving unit configured to move the sterilization unit, and a cover having a structure accommodating the sterilization unit and allowing the inside of the cover to communicate with the outside. A heat sink is provided in the cover in order to dissipate heat from the sterilization unit.

An HVAC duct ozone generator includes at least two ozone generation plate stacks, where each plate stack includes at least two independently electrically addressable plate groupings, where a primary plate grouping includes fewer ozone generation plates than a secondary plate grouping. Thus, the generator includes at least four independent ozone generation control channels to energize the primary and secondary plate groupings of each of the at least two plate stacks. The number of plates in a plate grouping may optionally be altered to reduce the ozone generation capacity of the primary plate grouping in relation to the secondary plate grouping through the movement of resistive collars between the stacked ozone generation plates.

An irradiation method includes irradiating an environment with light using one or more one ceiling-mounted light sources, where each ceiling-mounted light source has an optical axis oriented vertically downward, and wherein each ceiling-mounted light source emits a light distribution having more angle-integrated intensity in a higher angular range relative to the optical axis of the ceiling-mounted light source than in a lower angular range relative to the optical axis of the ceiling-mounted light source. A ceiling-mounted light source may include a support structure, one or more light emitters disposed on a surface of the support structure, and a reflector with a funnel-shaped reflective surface facing the support structure and expanding with increasing distance from the support structure along the optical axis. The light emitters may be ultraviolet (UV) light emitters whereby the light source is a UV ceiling-mounted light source.

A lighting assembly for an aircraft includes a visible light source generating visible light and an ultraviolet light source generating ultraviolet light. The visible light source is disposed adjacent to the ultraviolet light source. The visible light source illuminates a first illumination area with the visible light when the lighting assembly operates in a first operation mode. The ultraviolet light source illuminates a second illumination area with the ultraviolet light when the lighting assembly operates in a second mode of operation. The first illumination area substantially overlaps the second illumination area.

In various embodiments, methods of treating a space to reduce a concentration of volatile organic compounds present in the space using chlorine dioxide are provided. A method can include application of aqueous and gaseous chlorine dioxide solutions within the space or to materials located within the space. Treatment of materials that emit volatile organic compounds with chlorine dioxide can reduce the emission rate or shorten the volatile organic compound emission cycle of the material. Soft surface substrates such as carpeting materials can be treated with chlorine dioxide to reduce volatile organic compound emission and/or to reduce the number of microorganisms present in the material.

A system for sanitizing an enclosed space includes one or more sensors within the enclosed space. The one or more sensors are configured to detect one or more actions within the enclosed space and output one or more action detection signals indicative of the one or more actions. One or more ultraviolet (UV) lamps are within the enclosed space. The one or more UV lamps are configured to emit UV light in relation to one or more portions of the enclosed space. A sanitizing control unit is in communication with the one or more sensors and the one or more UV lamps. The sanitizing control unit is configured to receive the one or more action detection signals from the one or more sensors. The sanitizing control unit is configured to modify operation of the one or more UV lamps in response to the one or more actions being a triggering event. Additionally, or optionally, a resource allocation control unit is configured to generate resource recommendations regarding the one or more ultraviolet (UV) lamps for the enclosed space based on one or more triggering events of the one or more actions.