A device including a first solid-state light source configured to emit white light; a second solid-state light source configured to emit violet light having a dominant peak wavelength in a wavelength range from 380 to 420 nm; a collimator configured to collimate the white light along the main optical axis into a white light beam having a first spatial light distribution with a first Full Width Half Maximum (FWHM1); and a batwing optic configured to shape the violet light along the main optical axis into a batwing shaped light distribution with a maximum intensity at an angle with respect to the main optical axis, such that the angle is outside the first FWHM1.

A method and system of generating ozone gas. The method comprises receiving a stream of ambient air that includes at least oxygen gas, generating ozone gas based upon applying ultraviolet (UV) irradiation provided in accordance with a wavelength of 185 nanometer (nm) to at least a portion of the oxygen gas, the UV irradiation provided via an optical lamp module powered by a direct current (DC) voltage battery source, producing a modified air stream in accordance with the generating, and exhausting the modified air stream, the modified air stream having a higher concentration of ozone gas as compared with a trace concentration of ozone gas that is constituted in the stream of ambient air.

An electrostatic cleaning device includes: a flying portion having a body, at least one power source, at least one extension extending from the body, defining a hollow interior, at least one propeller configured to generate lift for the electrostatic cleaning device located at an end of the at least one extension, and at least one electrical connection extending through the hollow interior, connecting the power source to the propeller. An associated spray system includes a tank mounted to the flying portion and configured to store a cleaning spray, at least one spray mechanism in fluid communication with the tank to discharge the cleaning spray, and at least one electrostatic generating unit configured to apply a voltage across a spray path of the cleaning spray, so that the spray is electrostatically charged. At least a portion of the at least one extension is coated or shielded by nanotube particles.

An X-ray diagnostic apparatus according to an embodiment includes a radiographic unit, a movable unit, and processing circuitry. The radiographic unit performs radiography. The movable unit is provided in the radiographic unit and is movable to plural positions. The processing circuitry moves the movable unit to a position where the movable unit and a disinfection apparatus that performs disinfection have a predetermined positional relation to each other.

A lighting device including at least one first light source configured to emit a visible light through a first light emitting surface, at least one second light source spaced apart from the first light source and configured to emit light having a wavelength for sterilization through a second light emitting surface, and a housing having a bottom portion, on which the first and second light sources are disposed. The housing can include at least one sidewall portion connected to the bottom portion to enclose the first light source and the second light source in one common area, in which the first and second light emitting surfaces face substantially the same direction, and both the first light emitting surface and the second light emitting surface can be disposed at a different elevation from the bottom portion of the housing.

A system for sterilizing an interior of a vehicle includes: a sterilizer disposed on a driver's seat of the vehicle and configured to sterilize the interior of the vehicle; a driver detection sensor configured to detect a presence of a driver inside the vehicle; a seat movement adjustment mechanism configured to move the seat; and a controller configured to, in response to receiving a non-detection signal from the driver detection sensor, send driving signals to the seat movement adjustment mechanism and then apply a sterilizer operation signal for operating the sterilizer for a certain period of time upon movement of the driver's seat.

An ultraviolet anti-pathogen device for an elevator car is disclosed. The device includes occupant sensors, such as motion detectors to sense movement, weight sensors to sense the presence of occupants, or head sensors to sense the presence of occupants to assure that occupants have evacuated the car prior to sterilization or sanitization. Subsequently, UV-C generators, such as a bank of mercury bulbs, generate intense levels of UV-C. An array of multiple UV-C sensors scan the car, and determine the darkest area, or the area reflecting the lowest level of UV-C back to the sensors. A set of controllers contained in the device calculates the time required to obtain a bactericidal dose of UV-C reflected back from darkest area. Once a bactericidal dose has been reflected to all the sensors, the unit shuts down.

A dynamic treatment system incorporates multiple pathogen reduction devices and sensors for enhanced pathogen reduction. The system can provide coordinated multi-level control to provide automated engineered control of pathogen reduction that is suitable for use in confined spaces, such as building and vehicle systems. Room level occupancy tracking provides biological load level estimates while pressure level sensing provides pathogen travel path estimation through the building. Combining this pathogen load information and airflow path information the system can drive room level and building level pathogen reduction device adjustments to enhance pathogen reduction based on expected pathogen travel. Zone level pathogen interception, height adjustable portable treatment devices, along with various application specific pathogen reduction devices can be integrated into the dynamic treatment system.

Implementations of the disclosed subject matter provide a method of mobile disinfection that includes positioning a mobile robot in an area to be disinfected and receiving a command to perform disinfection at the mobile robot. The processor may determine whether the area is cleared for disinfection based on one or more signals outputted from the one or more sensors of the mobile robot when it is determined that the area is already mapped. A light source of the mobile robot may emit ultraviolet (UV). The processor may generate a two dimensional (2D) map or a three dimensional (3D) map based on at least one of the surface and the object that are detected by a sensor as the mobile robot moves, and an exposure map of at least one of the air, the surface, and/or the object exposed by the emitted UV light in the area to be disinfected and dosage levels of the emitted UV light applied as the mobile robot moves.

A sanitization apparatus of a vehicle includes (i) surfaces defining a chamber configured to accept an object to be sterilized with ultraviolet light and (ii) a first light emitting diode (LED) including a die that is configured to emit ultraviolet light. The die has a primary surface that defines a plane that extends through the chamber. The sanitization apparatus further includes a first reflective surface that is reflective of ultraviolet light disposed adjacent to the first LED. At least a portion of the ultraviolet light that the die emits reflects off of the first reflective surface and into the chamber. The first reflective surface defines a plane that intersects with the plane that the primary surface of the die defines.