The invention relates to a device for use with medical products which can be disinfected by means of a UV-C light treatment, which device is provided with: at least one sensor for registering a UV-C light dose of the UV-C light treatment; at least one activable reset unit which can perform a memory reset of a memory of the device; at least one indicator; at least one logic module which is operatively connected to the memory, the sensor, the reset unit and the indicator, wherein the logic module is configured to determine whether the product has been disinfected in a prescribed way on the basis of the UV-C dose registered by the sensor and to determine whether the reset unit has been activated, wherein, by means of the logic module, the memory can be placed in a first state, corresponding to a product disinfected in the prescribed way, and can be placed in a second state, corresponding to the memory reset by means of the activated reset unit, wherein the state of the memory is externally communicable by means of the indicator.

An ultraviolet ray detecting device is provided. The ultraviolet ray detecting device comprises: a substrate; a buffer layer disposed on the substrate; a light absorption layer disposed on the buffer layer; a capping layer disposed on the light absorption layer; and a Schottky layer disposed on a partial region of the capping layer, wherein the capping layer has an energy bandgap larger than that of the light absorption layer.

A purification apparatus includes a radio frequency (RF) signal source that generates an RF signal, first and second electrodes, and a conduit. The first electrode receives the RF signal and converts it into electromagnetic energy that is radiated by the first electrode. The conduit includes input and output ports and a chamber. The input and output ports are in fluid communication with the chamber, and the chamber is configured to receive an electrodeless bulb. The chamber is defined by first and second boundaries that are separated by a distance that is less than the wavelength of the RF signal so that the chamber is sub-resonant. The first electrode is physically positioned at the first boundary, and the second electrode is physically positioned at the second boundary. The first and second electrodes and the chamber form a structure that capacitively couples the electromagnetic energy into an electrodeless bulb within the chamber.

The invention provides a UV light monitoring system that is capable of estimating the UV irradiance on a target surface oriented at an arbitrary angle relative to a UV emitter that emits UV light. The UV light monitoring system can be used in a system or process for disinfecting a space, where the UV light monitoring system may enable a dose of UV light experienced by a surface in the space to be accurately estimated. The invention can alternatively or additionally provide a mechanism for determining the orientation of a UV light monitor to assist with the optimal placement of the UV light monitor within a space. The orientation is determined based on a comparison between signals received from first and second solar cells that are located on different faces of the UV light monitor.

A flame detection system includes: an optical sensor that detects light emitted from a light source; an applied voltage generating circuit that applies a drive pulse voltage to the optical sensor; a discharge determining portion that detects a discharge from the optical sensor; a discharge probability calculating portion calculates discharge probabilities in a first state and a second state in which the optical sensor is shielded from light and a pulse width of the drive pulse voltage is different; a storing portion storing a reference pulse width as a sensitivity parameter; and a discharge probability calculating portion that calculates a discharge probability of an irregular discharge occurring without depending on the received light quantity by the optical sensor based on the sensitivity parameter, the discharge probabilities calculated in the first and second states and the pulse widths of the drive pulse voltage in the first and second states.

A ultraviolet (UV) intensity indicator might use a UV responsive lumiphore to provide a converted, visible light level proportional to received UV light intensity for comparison to a visible brightness reference. For a desired UV intensity, the converted light should normally appear at least as bright as the reference light. For undesired UV, e.g. in a harmful wavelength range, the converted light should appear dimmer than the reference for normal operation and/or appear as bright as or brighter than the reference during excessive emission of the potentially hazardous UV emission. Alternatively, saturable lumiphores may provide different color outputs responsive to UV intensities for comparison to a multi-colored reference. Other examples contemplate use of a lumiphore to convert UV light to provide a visible light input to a visible light meter, such that an illuminance or brightness measurement by the meter gives a proportional representation of intensity of the UV light.

A system and method for verifying a desired alignment of an ultraviolet (UV) lamp with respect to a target component include a housing. A UV sensor is coupled to the housing. The UV sensor is configured to detect UV light emitted from one or more UV light emitters of the UV lamp and output one or more signals indicative of the UV light. A UV recorder is coupled to the housing. The UV recorder is in communication with the UV sensor. The UV recorder is configured to receive the one or more signals from the UV sensor and store data regarding the one or more signals.

A system for disinfecting an enclosed space includes a housing, ultraviolet (UV) emitters, a sensor to detect occupancy in or entry into an enclosed space, a UV directing mechanism, and a controller. The housing includes an air flow passageway. When the UV directing mechanism is in the closed state, the UV emitters are positioned in the air flow passageway and transmission of UV electromagnetic radiation into the enclosed space is substantially blocked. UV electromagnetic radiation is transmitted into the enclosed space when the UV directing mechanism is in the at least one open state. Disinfection operations can be activated when the UV directing mechanism is in the open state or the closed state. When the UV directing mechanism is in the open state, the disinfection operation is activated when the sensor indicates no occupancy in or no entry into the enclosed space.

An integrated radiation sensor is disclosed. The integrated radiation sensor comprises a first optical filter associated with a first radiation-sensing element and a second optical filter associated with a second radiation-sensing element. The first optical filter is configured to pass radiation to the first radiation-sensing element with wavelengths within a UV-C range. The second optical filter is configured to pass radiation to the second radiation-sensing element with wavelengths longer than wavelengths within the UV-C range. Also disclosed is a method of manufacturing the integrated radiation sensor and methods of use of the integrated radiation sensor.

A retroreflector includes an arrangement of triples, each having three side surfaces, which are disposed in the manner of a cube corner and stand approximately perpendicular on one another. The retroreflector can be produced from a carrier material by injection molding. An optical silicone resin is used as the carrier material. The retroreflector is based on triple mirrors that are both easily unmolded from a die and easily applied to curved surfaces even after unmolding or are usable for reflection of ultraviolet light.