DISINFECTION SYSTEM AND METHOD

Abstract

A lighting fixture is provided for placement within a room and operation to provide visible light to the room and air disinfection by applying UV light to the air flowing through an air treatment chamber. In one embodiment, one or more baffles may be arranged within the air chamber to substantially prevent UV light from leaking through the baffles into the room. In another embodiment, a UV light regulator may be provided to selectively control the amount of UV light directed into the room.

Description

The present invention relates generally to disinfection systems, and more particularly to a lighting accessory for disinfecting the air. Background of the Invention Infection by a foreign organism, such as a bacterium, virus, fungus, or parasite, can be acquired in various ways. But once acquired, the infection, if harmful, can colonize and cause disease. The immune system of the infected host (e.g., the person) can react to the infection and attempt to kill or neutralize the foreign organism. However, in some cases, the immune system may be insufficient to completely neutralize the infection, and hospitalization may be necessary for survival. For these and other reasons, prevention of infectious diseases is conventionally preferred to relying solely on the immune system of the infected host. Conventional efforts to prevent the spread of infectious diseases often involve manual disinfection techniques, such as cleaning or washing surfaces that may harbor foreign organisms. Because infectious diseases can spread from κηζοηη / ζζηζ / E / γίΛΐ Ref. 335513. Due to various transmission methods, such as direct person-to-person contact, manual disinfection techniques can be time-consuming and labor-intensive. For example, indirect contact of an infected person with an environmental feature, and then with another person who comes into contact with the contaminated environmental feature, is a common mode of infection. Because there are numerous surfaces in the environment, decontaminating all or substantially all of them is considered laborious and time-consuming, essentially making such decontamination impractical in many cases. As another example, airborne pathogens from an infected person can reach areas inaccessible to manual disinfection techniques. Contact pathogens are also known to be airborne on typical airborne particles. Room environments, such as hospital rooms, include air and surfaces that can become contaminated. Manually decontaminating these environments can be labor-intensive due to the volume of air and the number and variety of surfaces (e.g., nooks and crannies created by objects in the room). A room's HVAC system is labor-intensive to decontaminate and typically mixes and distributes particles. Furthermore, in hospital environments (e.g., a patient's room), the number and frequency of visitors and potential pathogens increases the likelihood of air and surface contamination, further increasing the labor and time required to effectively decontaminate surfaces using conventional techniques.For these and other reasons, conventional techniques fail to allow the decontamination of room environments in a practical way. Conventional disinfection techniques for hospital rooms involve transporting a mobile UV lighting unit into the room. The unit is placed inside and activated for a period of time deemed sufficient to disinfect the room. The unit is then removed and transported to storage or another room for use. This process can be laborious due to the effort involved in transporting and moving the unit and the effort required to maintain a schedule for its use in multiple rooms. Brief Description of the Invention The present invention, in one embodiment, provides a lighting fixture that fits within a conventional ceiling opening for tiles and lamps. The lighting fixture may include a general lighting fixture combined with a UVC lighting fixture. The UVC lighting may be housed in a reactor that disinfects the air with the target dose and provides a multi-part precision reflector system that directs the light within a narrow opening from the main fixture through an offset aperture to deliver a UVC dose to the ceiling. This reflector and deflector system may be configured to limit human exposure and provide a thin plane of light to travel along the surface.The air treatment system may contain a reactor and lamp separate from the surface disinfection system, or it may use a transparent film to allow the use of a UVC light source for the air disinfection reactor and to power the surface treatment reflector system. A system and method according to one modality may include a lighting fixture configured to be placed within a room and operate to provide visible light to the room and air disinfection by applying UV light to the air flowing through an air treatment chamber. In one modality, one or more baffles may be disposed within the air chamber to substantially prevent UV light from leaking through the baffles into the room. In one modality, a UV light regulator may be provided to selectively control the amount of UV light directed into the room. In one embodiment, an accessory is provided for disinfecting the air within a room. The device may include a support element that can be operated to facilitate mounting the device on a surface and a germicidal light source that can be operated to generate UV light. The accessory may include a UV treatment chamber having an untreated air inlet and a treated air outlet, and an operable air treatment region to receive air from the untreated air inlet and to direct the air to the treated air outlet. The UV light from the germicidal light source can be directed to the air treatment region. The device may include one or more operable baffles to substantially prevent UV light leakage from the UV treatment chamber into the room through the untreated air inlet and treated air outlet. The accessory may also include an operable visible light source to generate visible light for illuminating the room. In one configuration, the accessory may include a UV light regulator connected to the germicidal light source. The UV light regulator can be used to selectively control the amount of UV light directed into the room from the germicidal light source. In one embodiment, a device for disinfecting the air within a room is provided with a support element that can be operated to facilitate mounting the device on a surface and a germicidal light source that can be operated to generate UV light. The accessory may include a UV treatment chamber having an untreated air inlet and a treated air outlet, and an operable air treatment region to receive air from the untreated air inlet and to direct air to the treated air outlet. The UV light from the germicidal light source can be directed to the air treatment region. The fixture may include an operable visible light source to generate visible light for illuminating the room, and a UV light regulator in communication with the germicidal light source. The UV light regulator can be used to selectively control the amount of UV light directed into the room from the germicidal light source. In one embodiment, the UV light regulator may include a plurality of effective openings available for the transmission of UV light to the room from the germicidal light source, wherein each of the effective openings includes a stationary window and a sliding window. The UV light regulator, in one mode, can be operated to obtain occupancy information regarding whether there are occupants present in the room, wherein the UV light regulator can be operated to selectively provide UV light to the room based on the occupancy information being indicative that there are no occupants present in the room. An accessory is provided for disinfecting the air within a room according to a specific modality. The device may include a support element that can be operated to facilitate mounting the device on a surface and a germicidal light source that can be operated to generate UV light. The accessory may include a first reflector configured to direct the UV light within a UV light region onto the target surface. The UV light region is defined by the target surface and an opposite boundary line that is parallel to or converges with the target surface. In one embodiment, the accessory may include a second reflector configured to direct UV light towards the first reflector, where the germicidal light source is positioned to direct light towards a region within the treatment chamber and the second reflector. In one modality, a system is provided to use human counting sensors, air disinfection devices, surface disinfection devices, and consolidated controls to compensate for human biological deposits within an environment for active pathogen reduction. These and other advantages and features of the invention will be more fully understood and appreciated with reference to the description of the present embodiment and the figures. Before the embodiments of the invention are explained in detail, it should be understood that the invention is not limited to the operating details or the construction details and arrangement of components set forth in the following description or illustrated in the figures. The invention may be implemented in several other embodiments and carried out in alternative ways not expressly described herein. Furthermore, it should be understood that the phraseology and terminology used herein are for descriptive purposes and should not be considered limiting. The use of "including" and "comprising" and variations thereof is intended to encompass the elements listed below and their equivalents, as well as additional elements and their equivalents. Moreover, the enumeration may be used in the description of various embodiments.Unless expressly stated otherwise, the use of enumeration shall not be construed as limiting the invention to any specific order or number of components. Nor shall the use of enumeration be construed as excluding from the scope of the invention any additional steps or components that could be combined with or in the enumerated steps or components. Any reference to the elements of claim 1 as "at least one of X, Y, and Z" means that it includes any one of X, Y, or Z individually, and any combination of X, Y, and Z, for example, X, Y, Z; X, Y; X, Z; and Y, Z. Brief Description of the Figures Figure 1 shows a representative view of a lighting fixture according to an embodiment of the present invention. Figure 2 shows a control system for the lighting fixture of Figure 1 according to one modality. Figures 3A-3D show a UV light regulator according to a modality. Figure 4 shows a disinfection system according to one embodiment of the present invention. Figure 5 represents a lighting accessory and a disinfection system according to an embodiment of the present invention. κηζοηη / ζζηζ / Ε / γίΛΐ Figure 6 shows a disinfection system with a plurality of lighting devices according to an embodiment of the present invention. Figure 7 shows the disinfection system from Figure 6 with a lighting fixture that supplies UV light to an area of ​​the room according to a mode. Figure 8 shows a UV light regulator according to one mode. Figure 9 shows a disinfection system according to a modality. Figure 10 shows an enlarged view of a portion of Figure 9. Figure 11 shows another enlarged view of a portion of Figure 9. Figure 12 shows a disinfection system according to a modality. Figure 13 shows a dynamic dose curve according to a modality. Figure 14 shows a dosage based on state information (e.g., occupancy or touches) according to a modality. Figure 15 shows a dosage based on state information (e.g., occupation or touches) of κηζοηη / ζζηζ / Ε / γίΛΐ according to a modality. Figure 16 shows a front view of a lighting fixture according to a modality. Figure 17 shows a right side view of the lighting fixture in Figure 16. Figure 18 shows a bottom view of the lighting fixture in Figure 16. Figure 19 shows a left side view of the lighting fixture in Figure 16. Figure 20 shows a rear view of the lighting fixture in Figure 16. Figure 21 shows a top view of the lighting fixture in Figure 16. Figure 22 shows a bottom view of the lighting fixture of Figure 16 with a visible light module removed. Figures 23A-23B show various views of the lighting fixture component according to a modality. Figure 24 shows a cross-sectional view of the lighting fixture in Figure 16. Figure 25 shows a partial enlarged view of Figure 24. Figure 26 shows a cross-sectional view of the lighting fixture in Figure 16. Figure 27 shows a cross-sectional view of the lighting accessory of Figure 16. Figure 28 shows a cross-sectional view of the lighting fixture in Figure 16. Figure 29 shows a control system according to a modality. Figure 30 represents a control system according to a modality. Figures 31I-31B represent a light module that directs light towards a lens that is designed to direct light downwards and diffuse the light or create a downward light pattern. Figure 32 represents the lighting module of Figures 31A and 3B that is used as a lighting and disinfection system for small spaces. Figures 33A-33B show a lenticular lens of the light module of Figures 31A-31B according to an embodiment of the present invention. Figure 34A shows a perspective view of a portable visible light air disinfection assembly according to an embodiment of the present invention. Figure 34B shows a side section view of a modality of Figure 34A. Figure 34C shows a top section view of the modality in Figure 34A. Figure 35A shows a side section view of a portable visible light air disinfection assembly according to another embodiment of the present invention. Figure 35B shows a top section view of the modality in Figure 35A. Figure 36 shows a pathogen reduction system connected according to a modality. Figure 37 shows a pathogen reduction system connected according to a modality. Figure 38 shows a treatment system according to a modality. Figure 39 shows a filter disposal system according to a modality in a saved mode. Figure 40 shows the filter disposal system of Figure 39 in a disposal mode. Figure 41 shows a cross-sectional view of Figure 39 along with a cross-sectional view of a treatment system. Figure 42 shows a cabin according to one modality. Detailed Description of the Invention A system and method according to one embodiment may include a lighting fixture configured to be placed within a room and operate to provide visible light to the room and air disinfection by applying UV light to air flowing through an air treatment chamber. In one embodiment, one or more baffles may be arranged within the air chamber to substantially prevent UV light from leaking through one or more baffles into the room. In one embodiment, a UV light regulator may be provided to selectively control the amount of UV light directed into the room. It should be understood that, although the illustrated embodiments of the present invention focus on the lighting fixture 100 being attached to a room structure, the present invention is not limited to this configuration. In one embodiment, the lighting fixture 100 may not be a lamp attached to a room structure and, instead, may be a light assembly that can be placed within the room. For example, the light assembly may be a portable light or a freestanding light assembly that can be semi-permanently placed in the room, similar to the placement of a household lamp with a base on a floor or other object in a room. I. General description A lighting fixture according to one embodiment of the present invention is shown in Figure 1 and is generally designated as 100. The lighting fixture 100 may include an operable support member 150 to facilitate mounting the lighting fixture 100 on a surface. The surface may be the exposed surface of an interior wall of a room or an interior wall surface, such as a wall stud, that is concealed from view. The lighting fixture 100 may be powered by a power source 152 and may be connected to the power source 152 in a variety of ways depending on the application, such as by direct wiring or through a connection to a receptacle. The lighting fixture 100 in one embodiment may include a control system 200 configured to control the operation of the lighting fixture 100 and its components. Lighting fixture 100 in one embodiment may include a visible light module 180 operable to supply visible light to a room area 50 of the room. It is noted that the visible light module 180 may be absent in one or more embodiments described herein. It is also noted that, for the purposes of description, lighting fixture 100 is described in relation to having one or more components in the illustrated embodiment; it is to be understood that one or more components described herein in lighting fixture 100 may be absent from lighting fixture 100 and that any combination of components described herein may be incorporated into lighting fixture 100. The visible light module 180 may include a plurality of LEDs and an operable LED driver circuit to supply power to the plurality of LEDs to generate sufficient visible light to illuminate the room area 50. The visible light module 180, in the embodiment illustrated in Figure 1, is shown integral with the UV light regulator 120 (which may form a door or access panel to the treatment chamber 110); for example, the UV light regulator 120 may be a movable panel or door with side illumination (for example, illumination such as one or more LEDs arranged around at least a portion of the perimeter of the UV light regulator 120 and configured to direct light from the perimeter through the UV light regulator 120). The visible light from the edge illumination may ultimately be directed from within the UV light regulator 120 into the room area 50.The present invention is limited to the visible light module 180 being an integral part of the UV light regulator 120. For example, the visible light module 180 can be separate from the UV light regulator 120. In one embodiment, the lighting fixture 100 can be controlled by a switch 154, which can be remotely operated from the lighting fixture 100. The switch 154 can be used to control the power supply to a subset of components of the lighting fixture 100. For example, the switch 154 can be coupled to a control system 200 of the lighting fixture 100 that enables or disables the activation of a light source visible to the room based on the state of the switch 154. Other circuits and components of the lighting fixture 100 can remain active or inactive independently of the state of the switch 154. Such circuits or components, for example, can be coupled to the power source 152 independently of the state of the switch 154, or under the control of the control system described herein. Alternatively, switch 154 can be operated to selectively control the supply of all power from power source 152 to lighting fixture 100. For example, switch 154 can be operated to disconnect or connect power source 152 to lighting fixture 100. This control can be provided via a wired or wireless interface and can be managed through BACNET, Ethernet, or other control systems. Systems coupled to the control system can be configured to allow dimming, zone control, and other programmable functions based on communications transmitted via one or more digital communication protocols. κηζοηη / ζζηζ / Ε / γίΛΐ The lighting fixture 100 may include a treatment chamber 110 through which air can be directed and in which the air can be treated with UV light from a UV light source 160. The UV light source 160 may be a germicidal light source operable to generate UV light in response to the supply of power from the power source 152. For example, the UV light source 160 may be a UV-C source, such as a cold cathode lamp, a low-pressure mercury lamp, or UV-C light-emitting diodes. The energy applied to the UV light source 160 can be a conditioned form of the energy from power source 152. For example, power source 152 can operate to supply AC power. The lighting fixture 100 can include a circuit to condition this AC power into sufficient DC power to operate the UV light source 160. The DC power can be constant or pulsed depending on the operating specification and target parameters for the UV light source 160. In pulsed DC configurations, the power can be variable, for example, by varying the DC pulse between 90% and 30% to supply power according to a target operating parameter. In one embodiment, untreated air 52 can enter the treatment chamber 110 through an air inlet 112, and treated air 54 can exit the treatment chamber 110 through an air outlet 114. The air inlet 112 can be in fluid communication with a filter assembly 116, which can be configured to filter particles from the untreated air 52 before it is treated with UV light in the treatment chamber 110. Removal and replacement of the filter assembly 116 can be carried out periodically to prevent substantial clogging of the filter assembly 116. In one embodiment, filter assembly 116 can be positioned so that one or both sides of the filter assembly 116 are in a light path from UV light source 160. In this way, UV light can be directed to filter assembly 116 to decontaminate all or part of it. The UV light applied to filter assembly 116 can be applied selectively, or the filter assembly 116 can be positioned to receive light from UV light source 160 while UV light source 160 is active. As discussed in this document, the treated air 54 can exit the treatment chamber 110 through an air outlet 114. The air outlet 114 can include a vent 118 configured to permit airflow through it at a flow rate sufficiently greater than the flow rate of the treated air 54. In other words, the vent 118 can be configured to substantially prevent restriction of airflow through the treatment chamber 110. The vent 118 can include a plurality of openings, each sized to substantially prevent the entry of unsuitable objects (e.g., hands and fingers) into the treatment chamber 110. The treatment chamber 110 in one embodiment may include a baffle assembly, such as the air inlet baffle assembly 130A and the air outlet baffle assembly 130B, operable to substantially prevent UV light leakage from the air inlet 112 and air outlet 114 of the treatment chamber 110. Each baffle assembly 130A, 130B may include a plurality of baffles 132 arranged to permit airflow through the treatment chamber 110 without substantially restricting or affecting the target airflow rate. For example, if the lighting fixture 100 is configured to treat air at a rate of 300 CFM, the baffles 132 of each baffle assembly 130A, 130B may be arranged to permit airflow at a rate greater than 300 CFM.Using this same target airflow rate of 300 CFM, it is noted that, in one embodiment, the treatment chamber 110 can be constructed to permit airflow at a rate greater than the target airflow rate (for example, greater than 300 CFM). A fan assembly 140, as described herein, can be selected or operated to move the air at the target flow rate. In the illustrated embodiment, the plurality of baffles 132 of each baffle assembly 130A, 130B can be arranged to permit airflow through each baffle assembly 130A, 130B in a serpentine pattern. This configuration can substantially prevent the passage of UV light through the baffle assembly 130A, 130B and out through the respective air inlet 112 or air outlet 114. The deflectors 132, in one configuration, can facilitate the protection of the filter assembly 112 from contact with UV light from the UV light source 160. This configuration can substantially prevent damage or failure of the filter assembly 112 due to UV light exposure, potentially extending the service life of the filter assembly 112. In one mode, one or both deflector assemblies 130A, 130B may be absent from the lighting fixture 100. One or both air inlets 112 and air outlet 114 may be configured in the modes to substantially prevent UV light leakage from the treatment chamber. 110. As described herein, the lighting fixture 100 may include a UV light regulator 120 and a lens and general lighting system. The baffle assemblies 130A and 130B may be part of the UV light regulator 120 to control the transmission of UV light from the treatment chamber 110 to the room area 50. Controlling the transmission of UV light may include directing UV light from one or more regions of the lighting fixture 100 and substantially preventing light transmission or leakage from one or more regions of the lighting fixture 100. The lighting fixture 100 may include a fan assembly 140 that operates to direct air through the treatment chamber 110 from the air inlet 112 to the air outlet 114. In the illustrated embodiment, the fan assembly 140 is arranged near the air outlet 114; however, it should be understood that the present invention is not so limited. The fan assembly 140 may be arranged or provided in a different position to direct air through the treatment chamber 110. For example, the fan assembly 140 may be arranged near the air inlet 112 to direct air through the treatment chamber 110. The fan assembly 140 may include a fan that can operate to direct air through the treatment chamber 110 at a target flow rate for air disinfection or decontamination by applying UV light within the treatment chamber 110. As an example, the target flow rate may be 50 CFM. In one embodiment, the fan assembly 140 may be variable so that the airflow rate through the treatment chamber 110 can be increased or decreased under the direction of a control system 200 of the lighting fixture 100. The increase in flow rate may also be digitally driven by environmental or other control factors derived from that environment or interactions therewith. The lighting fixture 100 in the illustrated configuration may include an operable control system 200 to direct the operation of the lighting fixture 100 as described herein. For example, the control system 200 may be configured to direct the power supply to the UV light source 160 to facilitate the treatment of air flowing through the treatment chamber 110. As described herein, the control system 200 may be operatively coupled to one or more sensors. The one or more sensors may be configured to detect a variety of information depending on the application.Example sensor types include a passive infrared sensor (PIR sensor), a motion sensor, a touch center, a capacitive touch sensor, a USB input interface, an accelerometer, a temperature sensor, a REID reader, a UV regulator sensor, and a motor detector. Note that some of these examples include overlapping capabilities, such as the PIR sensor and the motion sensor, and in modalities where such capabilities are described, one or more of these example sensors may be provided for such sensor capabilities. The control system 200 in the illustrated mode can operate to selectively control the application of UV light from the UV light source 160 to room area 50. The control system 200 can obtain indicative information as to whether room area 50 is occupied by one or more people, and based on that information being indicative that room area 50 is unoccupied, the control system 200 can control the UV light regulator 120 to direct UV light from the UV light source 160 to room area 50. The control system 200 in the illustrated configuration can also be used to direct the operation of the visible light module 180. For example, the control system 200 can incorporate a driver circuit to supply power to one or more lights (e.g., LEDs) of the visible light module 180. As another example, the control system κηζοηη / ζζηζ / Ε / γίΛΐ The 200 module may include a communication interface (e.g., I2C or SPI) operable to communicate commands to the controller circuit embedded in the visible light module 180 to control the power supply to one or more lights. In one configuration, a room with an air treatment and surface disinfection system can modulate the visible light with an ID to communicate this ID to other disinfection systems and assets within the room. The Control System 200 may include any and all electrical components and circuits to perform the functions and algorithms described herein. Generally, the Control System 200 may include one or more microcontrollers, microprocessors, and / or other programmable electronic components programmed to perform the functions described herein. The Control System 200 may additionally or alternatively include other electronic components programmed to perform the functions described herein, or that support the microcontrollers, microprocessors, and / or other electronic components.Other electronic components include, but are not limited to, one or more field-programmable gate arrays, systems-on-a-chip, volatile or non-volatile memory, discrete circuits, integrated circuits, application-specific integrated circuits (ASICs), and / or other hardware, software, or firmware. Such components may be physically configured in any suitable manner, such as mounting them on one or more circuit boards, or arranged in other ways, either combined into a single unit or distributed across multiple units. These components may be physically distributed in different positions within the lighting fixture 100, or they may reside in a common location within the lighting fixture 100. When physically distributed, the components may communicate using any suitable serial or parallel communication protocol, such as, but not limited to, CAN, LIN, FireWire, I2C, RS-232, RS-485, and Universal Serial Bus (USB). In one mode, the local control system of a device (e.g., the lighting fixture 100) may also interface with a cloud-based control system, which may receive or transmit additional inputs obtained from external systems (e.g., other lamps, disinfection systems, environmental systems, or any combination thereof) to provide greater insight into and understanding of the overall environment.The cloud-based control system can also control a device directly based on additional protocols and information obtained from sensor data and other sources. In one embodiment, the Lighting Fixture 100 can be designed to fit within an existing ceiling opening for tiles and lighting fixtures. The Lighting Fixture 100 may include a general visible light component and can be installed in place of an existing conventional lighting fixture. The Lighting Fixture 100 may also include a UV lighting component (e.g., UVC lighting) as described herein. The UV lighting may be provided in a reactor, such as a treatment chamber, that disinfects the air at the target dose. The UV lighting component may include a UV-C reactor vessel and reflectors with UV projection areas.UV light can be directed, in one configuration, by a precision multi-part reflector system that channels the UV light from the lighting fixture through an offset aperture to deliver a dose of UV light to the ceiling or other target surface. This reflector and deflector system can be configured to limit human exposure to UV light while providing a thin plane of light to travel across the target surface. In one embodiment, the lighting accessory 100 may include an air treatment system comprising a reactor and a UV light source separate from a reactor and UV light source provided for surface disinfection of the target surface. Alternatively, the lighting accessory 100 may include a transparent film or light-transmitting element that permits the passage of light but not air. The light-transmitting element may allow the use of a UV light source from either the air treatment system or the surface disinfection system to power both the air disinfection reactor and the surface disinfection system (e.g., a surface treatment reflector system). In one mode, airflow can change with HVAC and doors that pressurize the room. A system operating in this mode can measure airflow and adjust the UV disinfection intensity based on a chart that displays a flow rate versus intensity graph. A control system can be set to the duration of higher flow rates and also track flow changes over time, sending this data to an external device. In another mode, pressure sensors or information obtained from HVAC sensors, or both, can provide data on airflow paths and the timing and events of potential contamination. In hospital settings, sensor information, such as pressure sensor data or HVAC sensor data, or both, can allow monitoring of door opening times and changes in areas adjacent to sterile zones.In one configuration, an air treatment system can be provided that includes surface disinfection and air disinfection. The system may include an articulated LED lamp, a light source, and a reactor system for treating particles with UV light (e.g., UVC light). The air treatment reactor may include a fan, a UVC reactor, and a HEPA filter at the inlet. The air treatment system may include a particle sensor capable of detecting skin particles and dust. The air treatment system can monitor the lifespan of the lamp(s) and the filter's end-of-life time. The system can be networked and able to communicate information to external devices, such as end-of-life data and sensor and room data.This data can include temperature, air pressure, light levels, airflow, filter end-of-life times, lamp end-of-life times, installation and replacement dates, total usage hours, usage hours since the last filter change, lamp changes, when the unit is opened for service, and how many times the light is used each day and night. The light sensor can be used to detect daylight or room light levels. Light levels can be set as a threshold to avoid disturbing patients when the room is dark. Floors can be treated during visits in the illuminated area and during daylight. The information obtained from one or more daylight sensors can also be used as a basis for energy-saving controls, as well as for understanding daylight patterns and adjusting operation accordingly. It is noted that, in one configuration, the lighting fixture 100 can be opened for servicing. For example, the visible light module 180 can pivot to provide access to the UV light source 160 and replace the UV light source 160. II. Control System As described herein, the lighting fixture 100 in one configuration may include a control system 200 configured to control the operation of the lighting fixture 100 and its components. A control system 200 according to one configuration is shown in Figure 2. In one configuration, the control system 200 may be configured as an Internet of Things (IoT) hub or node within a network, as described herein. The control system 200 in one configuration may function to detect and identify the location of the terminal cleaning equipment. The 200 control system can include power management capabilities and an optional battery management system for safety and emergency purposes. One or more sensors can be provided to detect room conditions for general data analysis and use, as well as to help inform system control about events and response conditions. The system can include an industrial automation interface for power control and management. The control system can include a UVC sensor to determine the dose and time for air reactor and surface treatment. Power management can include one or more of the following operations: delayed shutdown, intermittent cycle scheduling, dimming, energy monitoring and accounting, and on / off control. The control system 200 in the illustrated configuration includes a UV light source 232 (e.g., a UV-C power source) that enables control of UV intensity and contact time. The UV light source 160 can be any UV source capable of generating UV light at the target intensities, including UV-C light at the target intensities. The UV light source 232 can control the current and / or voltage supplied to the UV light source 160 and can provide that power in a variety of ways. For example, the UV light source 232 can supply power directly through cables to the UV light source 160, or the UV light source 232 can supply power wirelessly to the UV light source 160.In the wireless configuration, the UV 232 light source may include a primary capable of wirelessly transmitting power, and the UV 160 light source may include a secondary capable of receiving the wirelessly transmitted power. The control system 200 of this type may include a controller 236 capable of performing various functions related to the operation of the lighting fixture 100. The controller may be a low-current microprocessor configured on a regulated rail. The microprocessor may be configured to control temperature (e.g., ambient, source, and local microprocessor temperature), accelerometer values, voltage and current sensors, as well as any other sensor suitable for use with a microprocessor, or any combination thereof. The microprocessor module may also allow for external communications and interfaces. In the illustrated configuration, the controller 236 is coupled to a detection system 224 that provides the control system 200 with various sensor inputs, such as PIR sensors, motion sensors, capacitive touch sensors, an accelerometer, and temperature sensors, and can provide an interface for the RFID reader 226. The data collected by these sensors can help monitor the operation of the control system 200 and gather data that may be relevant for monitoring infection-related events. The touch detection aspect, in one configuration, allows touch events to trigger the activation of the UV source, interrupt disinfection cycles, and provide valuable data by dynamically adjusting UV parameters such as cycle time and source intensity. The PIR sensor, in one configuration, can enable heat and motion tracking.Additionally, or as an alternative, capacitive touch detection can enable tracking of touches on handles and surfaces that are not switches. The detection system 224 in one mode may include a particle sensor capable of detecting information about particles present in the air that is external or internal, or both, with respect to the treatment chamber 110. The control system 200 may vary according to the operation on the particle information obtained from the particle sensor. In one configuration, the 200 control system can be coupled to a cloud system as described here as a 3602 cloud-based control system. The 3602 cloud system can obtain multiple particle sensor readings for an environment, and direct fan speeds and timings to treat a column of particles within a larger multi-device environment (e.g., multiple airborne pathogen reduction systems) in a connected pathogen reduction system. In one mode, controller 236 can monitor the current and voltage supplied to UV light source 160 and determine if the current and / or voltage are within preset ranges for proper lamp operation and diagnostics. UV light sources 160 can exhibit open circuits, short circuits, or impedance changes that result in varying operating voltages. Controller 236 can identify these conditions based on the current and / or voltage and send information related to these conditions to a remote network component, such as a cloud server, as a service request. In one mode, UV light power source 232 monitors the current and voltage to the UV light source. 160 and returns that information to controller 236. Controller 236 may also include volatile and / or non-volatile storage memory. For example, controller 236 may include flash memory. In one configuration, the UV light source 160 and the control system 200 have integrated RFID capabilities. An RFID tag 238 affixed to the UV light source 160 allows the controller 236 to uniquely identify the UV light source 160 using an RFID reader 226. This enables the control system 200 to properly validate the UV light source 160 and also allows new thresholds (e.g., operating currents and / or voltages and other operating parameters) to be transferred to the controller 236 for the specific UV light source 160 connected to the lighting fixture 100. These thresholds can change depending on the lamp manufacturer or age and can also change over time as the controller 236 adapts and learns the operating parameters of the UV light source 160. The UV light source 232 in one configuration includes an amplifier circuit, where the amplifier gain can be changed to increase or decrease the intensity of the UV light source 160. The amplifier can change the voltage applied to the UV light source 232 within the permitted thresholds. It is noted that higher thresholds or operation near the upper end of a voltage range for the UV light source 160 can adversely affect the lifespan of the UV light source 160. Operating intensity thresholds, operating ranges, or other operating conditions for the UV light source 160 can also be entered and stored on the REID label 238. For example, the hours at each intensity level can be useful for the controller 236, as it can accumulate the time at each intensity for the UV light source 160 to allow for total end-of-life calculations.This information can be persistent on the REID 238 label of the UV 160 light source so that if the UV 160 light source is connected to another lighting fixture 100, that lighting fixture 100 can learn the operating parameters and end-of-life associated with the UV 160 light source. Adjusting and applying power to the UV light source 160 at controlled intervals allows the controller 236 to control the UV power output. This can dynamically compensate for frequent occupancy of entrances and exits in room area 50. Operating at the highest intensity is often not ideal, as it shortens the lifespan of the UV light source 160. With lower intensity operation, longer on-cycle times (or dose times) can be targeted to achieve adequate disinfection, as shown in Figures 14 and 15. Dynamic control can be used to momentarily increase the dose during peak hours. A moving average of occupied times and target dose changes can be pre-programmed, and the controller 236 can dynamically modify them as occupancy iterations change with respect to room area 50. This can be managed locally by the controller 200 or via a cloud interface using a communication protocol. An example of the algorithm involves first setting the target dose. Each lighting fixture 100 can, for example, store a target dose in the form of intensity level and contact time at a calibrated distance for the room area 50. A communication interface 220 of the control system 200 can be provided to receive information and transmit it to external electronic devices. For example, the communication interface 220 can include a USB interface 242 (or another wired communication interface, such as Ethernet or RS-232) or a BTLE interface (or another wireless communication interface) that can be configured to allow external electronic devices, such as a smartphone, tablet, or other mobile device, to automatically write the UV parameters κηζοηη / ζζηζ / Ε / γίΛΐ and other relevant values ​​to the control system 200. In some applications, the UV 160 light source is fixed at a specific distance from the target disinfection surface, and a UV-C intensity meter is used to ensure the correct dose for that distance. This can be used to ensure that each device has been calibrated to pre-established standards. Some UV 160 light sources are made of glass instead of quartz and do not emit UV-C. This type of quality and output calibration can be used in the field and in production facilities. Original equipment manufacturers (OEMs) who produce the device can guarantee suitable installation configurations across a wide range of mounting options and distances, with a valid response for performance limits. The expected lamp life also changes dynamically as these minimum intensity expectations are established.An aging percentage can be added to these numbers to account for source degradation over the source's expected lifetime. The graph in Figure 13 shows a typical calculated curve for the dynamic dose curve. Dose-versus-energy data can be defined and measured first in the laboratory, stored and averaged over the lifetime, and then verified on the surface during testing. It should be noted that the intensity range can be set and designed for optimal UV 160 light source lifetime and is often over-designed. Initial calibration values ​​include the intensity range. This establishes the allowable time interval and may be limited by UV exposure limits, such as eye contact thresholds. In the case shown, the thresholds are established by OSHA standards for UV-C contact and exposure. In some applications, additional security-related components can be provided in the control system 200. For example, in the configuration shown in Figure 5, a cryptographic chip 244 is included to provide each unit with a unique ID. Other mechanisms can be provided to identify each lighting fixture 100. Security can also be enhanced with a security token and SSID stored in non-volatile memory configured by installation personnel via a BTLE program or USB for the Wi-Fi interface. This cryptographic chip 244 can be provided as an additional security measure and can be configured to create a room occupancy and disinfection monitoring device that can meet the security requirements deemed sufficient for direct writing to an electronic medical record. In a κηζοηη / ζζηζ / E / γίΛΐ mode, the communication interface 220 of the control system 200 has BTLE and / or mesh capabilities. The mesh network can be Zigbee or BACNet to meet specific regulatory requirements or hospital specifications. In extreme monitoring solutions, a cellular module 286 can be used to communicate data to an external device (e.g., the cloud) as an alternative source of information collection. As shown, the control system 200 can include transceivers and antenna matching circuitry 228 and a cellular module 286 coupled to the corresponding antennas 252, 250, and 254. The controller 236 can also have ports to allow directed wired connections, for example, using USB, Ethernet, and RS-232 protocols. In some applications, the 200 control system may be battery-powered. The battery-powered version may be equipped with a 248 battery, which can serve as the power source 152 for the 100 lighting fixture. The battery-based system can be charged in various ways, including wired and wireless charging configurations. The energy storage can be sized for the UV dose and interval and can be connected to a charging unit or charged directly. It may also have various indicators to provide feedback to the user. As stated above, the UV light source κηζοηη / ζζηζ / Ε / γίΛΐ A UV-C lamp (e.g., UV-C) may have a REID 238 tag, and the control system may have a REID 226 reader to determine when the UV light source has reached the end of its useful life, thus encouraging proper use and maintenance. UV light sources often have a lifespan based on a number of hours, as they self-degrade due to the nature of UV light, including UV-C. The control system, for example, via the controller, can track the lamp's on-time by reading and writing to the memory located on the REID 238 tag. The control system can then adjust the actual on-time using a correlation factor to compensate for the lamp's intensity.For example, the control system 200 can increase the lamp life counter by less than the actual operating time when the lamp intensity is reduced, and can increase the lamp life counter by more than the actual operating time when the lamp intensity is increased. The correlation factor (or intensity adjustment factor) can be provided by the lamp manufacturer, determined through UV light source testing 160, or estimated based on past experience. κηζοηη / ζζηζ / Ε / γίΛΐ The control system's communication interface 220 may also have a USB and Power over Ethernet (PoE) circuit 237, which may allow the equipment to be used without additional power cord requirements. In one mode, the power management circuit 239 may allow inputs from various power sources and voltages, enabling flexible power adaptation. For example, the power management circuit 239 may allow AC power to pass through so that the host piece of equipment is not disturbed. When the lighting fixture 100 is integrated into another electronic device, the power management circuit 239 may allow the lighting fixture 100 to draw power from the host electronic device's power source as a power source 152.A single output can be used to avoid confusion when plugging in the device. The 239 power management circuit can operate to power from a variety of sources, including wireless, USB, DC, and battery sources. In one mode, power regulation is performed in a buck manner to provide an energy-harvesting power source that produces a regulated power source when multiple power sources output voltage. κηζοηη / ζζηζ / Ε / γίΛΐ The control system 200 in the illustrated configuration may include a regulator circuit 246 configured to facilitate the operation of the UV light regulator 120. The regulator circuit 246 may include a motor controller and a sensor circuit. The motor controller and the sensor circuit may drive and monitor the RPM of the motor of one or more fans. The motor controller may control the speed of one or more fans, for example, by adjusting the duty cycle of a PWM drive signal supplied to the fan or fans. The sensor circuit may monitor the current against a target and / or range of currents associated with a target RPM of the fan or fans. The regulator circuit 246 may also include a UV light regulator sensor circuit 256, which is shown separately from the regulator circuit 246 in the illustrated configuration, but which may be incorporated within it. The motor controller of regulator circuit 246, as discussed in this document, can be used to control the amount of UV light directed to room area 50. The motor controller can be a DC motor controller capable of supplying power to drive a motor of the UV light regulator 120, which can move a movable component of the UV light regulator 120 to selectively increase or decrease the amount of UV light directed to room area 50. The UV light regulator 256 sensor circuit can function to provide indicative feedback of at least one position of the moving component and an amount of UV light directed to room area 50. For example, the UV light regulator 256 sensor circuit can include an operable UV-C light sensor to provide an indicative value of a UV-C light intensity directed to room area 50. The intensity value can help determine the positioning of the moving component of the UV light regulator 120 to achieve a target level of UV light applied to room area 50. The UV light regulator 256 sensor circuit, in one modality, can include an encoder (for example, an optical encoder) indicative of a position of a motor shaft or the moving component, thereby being indicative of an amount of UV light applied to room area 50. In one embodiment, as described herein, the control system 200 may include a room sensor interface 255 operatively coupled to the controller 236. The room sensor interface 255 may be configured to provide indicative feedback as to whether room area 50 (potentially the entire room area) is occupied by one or more people. The room sensor interface 255 may be configured to count people or track the number of people within room area 50. Alternatively, the feedback from the room sensor interface 255 may be used by a controller separate from the room sensor interface 255 to count people or track the number of people within room 50. In the illustrated mode, the control system 200 can use feedback from the sensor interface of room 255 to determine whether to direct UV light to room area 50 or stop providing UV light to room area 50. It should be understood that the room sensor interface 255 may be separate from the control system 200 on an external device capable of communicating information indicative of the presence of one or more people in the room. For example, the room sensor interface 255 may be a motion sensor (e.g., a PIR sensor) capable of detecting the presence of one or more people in room or room area 50. This motion sensor may communicate wirelessly with the control system 200 or with an intermediary device capable of transmitting occupancy information to the control system 200. Furthermore, or alternatively, the room sensor interface 255 may include a switch attached to a room door to indicate the occupancy status. 6 of the room as open or closed, using this information as an indicator of whether the UV light source can be activated for disinfection of room area 50. For example, if it is determined that the door is open, activation of the UV light source 160 can be avoided to prevent UV light leakage outside of room area 50. The control system 200 may include a separate visible light controller 245 or one provided in the visible light module 180 to facilitate the operation of a visible light source. The visible light controller 245 in the illustrated configuration may also include a user interface (e.g., an ON / OFF switch, a brightness adjuster, and a color adjuster) to allow a user to control the operation of the visible light source. For example, the user may use the user interface to direct the visible light controller 245 to increase or decrease the color temperature of the visible light source. The visible light controller 245 may include a controlled current source and / or a controlled voltage source to supply power to the visible light source according to a target operating mode of the visible light source. III. UV light regulator The UV light regulator 120, according to one configuration, is shown in Figures 3A-3B in the closed and open positions. The UV light regulator 120 can be used to selectively control the amount of UV light directed into the room from a germicidal light source, such as the UV light source 160. The UV light regulator 120 can include one or more selectively UV-transmissive openings 124. Each of the one or more openings 124 can be an operable window that transmits UV light and is of adjustable size. The window can permit the passage of gas or air or can include a UV-transmissive material (e.g., glass) that permits the passage of UV light but not gas or air. In the illustrated embodiment, the UV light regulator 120 includes a stationary element 121 having a plurality of stationary windows 125 that transmit UV light and, optionally, air. The UV light regulator 120 may also include a movable element 123 having a plurality of movable windows 127 that transmit UV light and, optionally, air. Each of the stationary windows 125 may be associated with one of the movable windows 127, together forming an opening 124 with a window of variable size. The movable element 123 in one mode can slide laterally with respect to the stationary element 121 so that the overlap can vary between each stationary window 125 and the associated movable window 127. The degree or amount of overlap can set the size of the opening 124 (e.g., between fully closed as shown in Figure 3C and fully open as shown in Figure 3D). A motor can be coupled to a pinion gear 129 in the illustrated embodiment that interacts with a rack gear 128 of the movable element 123 to facilitate the lateral movement of the movable element 123. It should be understood that the present invention is not limited to the rack and pinion configuration for moving the movable element 123; any type of mechanism can be provided to facilitate the movement of the movable element 123. Figure 8 shows an alternative embodiment of the UV light regulator 120 and includes similarly configured components designated with the same part numbers followed by ' . The UV light regulator 120' includes a stationary element 121' and a movable element 123' in the form of a rotating disc having a plurality of movable windows 127' that move relative to the stationary windows 125' such that an overlap between the movable windows 127' and the stationary windows 125' defines the aperture 124', which has a variable size, thus allowing control of the amount of UV light directed through the UV light regulator 120. The center of the movable element 123' can be coupled to a motor to facilitate rotation of the movable element 123' in response to rotation of the motor shaft.The UV 120' light regulator in the illustrated mode can rotate continuously without stopping to control an amount of UV light directed through the UV 120 light regulator towards room area 50. As discussed herein, the lighting fixture 100 may include a UV light sensor circuit 256. In one embodiment, the UV light sensor circuit 256 may include a UV sensor that responds to UV-C light and is capable of providing a sensor output indicative of the UV-C light intensity received by the UV sensor. The UV sensor of the UV light sensor circuit 256 may be arranged downstream of the UV light regulator 120 such that if the UV light regulator 120 is closed, the UV sensor detects substantially no UV-C light from the UV light source 160. The UV 256 light sensor circuit can include more than one UV sensor in a single configuration. For example, a first UV sensor can be placed downstream of the UV 120 light regulator and a second UV sensor upstream of the UV 120 light regulator. This allows for a measurement of the UV light intensity from the unregulated UV 160 light source. In other words, the UV light sensor circuit 256 can indicate a total amount of light available for regulation by the UV light regulator 120, knowing that this total amount can be useful in the diagnosis and control of at least one of the UV light source 160 and the UV light regulator 120. For example, the control system 200 can increase or decrease the UV light output of the UV light source 160 based on the output of the second UV sensor upstream of the UV light regulator 120. The control system 200, in one mode, can compare the sensor output of the first and second UV sensors to determine the control parameters for the UV light regulator 120. For example, the control system 200 can adjust at least one of the operating parameters of the UV light source 160 (e.g., to increase or decrease the output intensity) and the amount of light directed by the UV light regulator 120 from the UV light source 160 to room 50. The room could be, for example, a room in a house, a car cabin, an elevator, a train compartment, a bathroom, or any other enclosed space. In one embodiment, the UV light sensor circuit 256 may include more than one UV sensor arranged in the stages of the UV light regulator 120. As discussed here, the UV light regulator 120 may include more than one UV light control stage. For example, the UV light regulator 120 may include a first UV light regulator, such as the construction shown in the embodiment illustrated in Figures 3A-3D, and a second UV light regulator capable of directing the UV light received from the first light regulator and controlling a quantity of received UV light that is passed downstream of the second UV light regulator. For example, the second UV light regulator may be similar to the construction shown in the embodiment illustrated in Figure 8, or any type of UV regulator described here or structure capable of controlling a quantity of UV light directed downstream of the structure.The UV sensors of the UV light sensor circuit 256 can be arranged after each stage of the UV light regulator, including downstream of the first UV light regulator and downstream of the second UV light regulator. Alternatively, or in addition, the UV light regulator 120 may include a door 122 capable of rotating from a closed position 135 to an open position 137. This construction, according to one embodiment, is shown in Figures 6 and 7. In the closed position 135, the door 122 can substantially prevent UV light from the lighting fixture 100 from being directed into room area 50. And, in the open position 137, the door 122 can direct UV light from the lighting fixture 100 into room area 50. The door 122, in one embodiment, may be provided instead of or in addition to the stationary element 121 and the movable element 123. For example, the stationary element 121 and the movable element 123 described in relation to the illustrated embodiment are shown in Figures 3A-3D. It can be a first UV light regulator and gate 122 can be a second UV light regulator downstream of the first UV light regulator. In the configuration illustrated in Figures 6 and 7, and as discussed in this document, the UV light regulator 120 can operate to control the transmission of UV light from the UV light source 160 to block UV light and prevent it from reaching room area 50, depending on whether the room occupancy status in control system 200 indicates that room area 50 is occupied. The UV light regulator 120 can also operate to direct a controlled amount of UV light from the UV light source 160 to room area 50, depending on whether the room occupancy status in control system 200 indicates that room area 50 is unoccupied. As discussed herein, the lighting fixture 100 may include a visible light module 180 that can operate to supply visible light to room area 50. The visible light module 180 can be operated by the control system 200 to supply visible light based on a visible light directive (e.g., an input from a light switch associated with the room area or based on the room occupancy status indicating that the room is occupied). In addition, or alternatively, the visible light module 180 can operate to supply visible light to room area 50 depending on whether the UV light regulator 120 is supplying UV light from the UV light source 160 to room area 50. IV. Disinfection System A disinfection system according to one embodiment is shown in Figure 4 and is generally designated as 300. The disinfection system 300 may include a lighting fixture 100 according to an embodiment described herein and several remote disinfection units 310. The lighting fixture 100 may be a primary unit 320 of the disinfection system 300; however, the present invention is not so limited. For example, the lighting fixture 100 may be a remote disinfection unit 310 in one embodiment. The Disinfection System 300 can include the Lighting Fixture 100 with additional networked disinfection systems that treat other areas of the room and share treatment sequences and data. The room light can be modulated to display the ID of the Lighting Fixture 100, which can communicate encrypted information. Other network devices, such as keyboards, input devices, surface treatment devices, and floor treatment devices, can work in conjunction with the Lighting Fixture 100 to decontaminate room area 50. This Disinfection System 300 can be used to detect environmental service workers during cleaning and to detect assets, people, and other devices in room area 50.Identification can allow devices to associate with a control device and enable control sequences and protocols to obtain analysis and monitoring of disinfection in the room within the network area and within the local room. In the illustrated configuration, the primary unit 320 can operate to control and monitor several remote disinfection units 310. In this configuration, the disinfection control system 300 includes a primary unit 320 that comprises a UV light source and a control circuit capable of controlling the operation of the UV light source in the primary unit 320, as well as the remote disinfection units 310. The primary unit 320 in the illustrated configuration is the lighting fixture 100, which includes a control system 200, a UV light source 160, a UV light regulator 120, a power source 152, a switch 154, an air inlet 112, and an air outlet 114. The lighting fixture 100 can be configured in different ways according to one or more of the configurations described herein.For example, lighting fixture 100 may include a door 122 that functions as the UV light regulator 120 instead of or in addition to the movable and stationary elements 121, 123. In the disinfection system 300 as illustrated, the remote disinfection units 310 are controlled by the main unit 320 via a communication system 340. The communication system 340 can be a wired or wireless network system, or a combination of both. For example, the communication system 340 can include a wired Ethernet communication system and / or a Wi-Fi communication network. As another example, the 340 communication system can be based on modulated light, including modulated UV light 330 as depicted in the illustrated configuration. The modulated UV light 330 can contain encoded data that can be extracted and processed by one or more of the 310 remote disinfection units. The 310 remote disinfection units can include a UV light sensor capable of detecting the modulated UV light 330 and a communication circuit capable of decoding data from the modulated UV light 330. In one mode, the 310 remote disinfection units can function to detect the presence or absence of UV light from the 320 main unit. With this configuration, the 330 modulated UV light can be replaced with unmodulated UV light from the 320 main unit. The 310 remote disinfection units can then function to detect this unmodulated UV light and, in response to the detection of its presence, generate UV light for disinfection purposes. In one configuration, the 310 remote disinfection units are set up to direct UV light 312 to an area of ​​a room. The 310 remote disinfection units may be in the same room or in different rooms, and may direct UV light to overlapping areas of a room, or any combination thereof. The 310 remote disinfection units may include one or more UV light sources 360 capable of generating UV light and configured similarly to the UV light source 160 described herein, along with the lighting fixture 100. The 310 remote disinfection units may also include a control system 314 capable of directing the operation of the 310 remote disinfection unit, such as controlling the UV light output of the UV light sources 360. In one configuration, one or more, or all of the 310 remote disinfection units may be a lighting fixture 100 as described herein.For example, remote disinfection units 310 may be capable of treating air using UV light in an air treatment chamber 110. One or more aspects of the lighting accessory 100 described herein may be absent from remote disinfection units 310. For example, remote disinfection unit 310 may not include an air treatment chamber 110 or a UV light regulator 120. As another example, remote disinfection unit 310 may not include a visible light module 180. In one configuration, the 310 remote disinfection units can be powered separately via separate connections to a shared power source (e.g., the building's utility power). Alternatively, one or more of the 310 remote disinfection units can be powered from separate energy sources, such as a battery. In one configuration, the 310 remote disinfection units can be powered via a bus or multiple power supply cables provided in a wiring harness. Optionally, the wiring harness can include communication and / or control cables that are part of the 340 communication system. The 310 remote disinfection units, together with the 320 main unit, can operate to deliver UV light to a room area 50 from different angles. This allows complex surfaces within the room area 50, such as furniture, to be disinfected with UV light. Activating or operating the UV light sources 160 and 360 of the 310 remote disinfection units and the 320 main unit facilitates coordinated disinfection of a room area 50. By using multiple heads with a single controller (e.g., the 320 main unit), costs can be kept low, and larger, more complex surfaces can be disinfected. For example, different UV sources can be directed toward different areas of a complex surface to ensure that the entire surface is properly disinfected. It is noted that the 310 remote disinfection units can be deployed in a variety of locations within the room. For example, the 310 remote disinfection units can be provided as room fixtures. Alternatively, the 310 remote disinfection units can be provided in one or more objects within the room, such as a vital signs monitor, an IV pump, a visible light, or a keypad. These objects can include 310 remote disinfection units capable of being activated in response to a directive provided by the 320 main unit via the 340 communication system.For example, in the illustrated mode, the main unit 320 can transmit a coded signal via modulated UV light 330 to the remote disinfection units 310 to activate or operate the UV light source 360 ​​to generate UV light 312 for disinfection of room area 50 or another surface provided in the room (for example, the inner surface or a hidden surface of a keyboard). In one configuration, multiple UV light sources (e.g., a main unit 320 and one or more remote disinfection units 310) can be used in coordination to clean hard-to-reach areas. Whole-room terminal cleaning systems can use high-intensity UV light to clean a room. The amount of time required to deliver a target dose can be reduced compared to conventional single-light-source systems. Alternatively, the system can use UV disinfection for specific areas or devices, such as multiple high-touch areas, in conjunction with each other and / or one or more lighting fixtures 100. Air disinfection can also be provided to achieve an even greater disinfection impact.In one mode, assets can be identified with a room, allowing the determination of when terminal cleaning is being used, recording of cleaning activity through a network for disinfection times of the units being used, and coordinated cleaning with any other device in the room for a deep cleaning cycle. In one configuration, one or more remote disinfection units 310 can be arranged to direct UV light 312 toward the room floor, either parallel to or converging with the floor. For example, the remote disinfection unit 310 could be a floorboard disinfection device capable of directing light from a wall adjacent to the floor and toward the floor, or parallel to the floor. This configuration is illustrated in Figures 6 and 7. In one configuration, the remote disinfection units 310 can function to communicate information to the main unit 320 and / or another external device via the communication system 340. The information communicated by the remote disinfection units 310 can include status information, such as whether UV light 312 is being supplied from the UV light source 360, the duration and / or intensity of the UV light 312, and the time associated with the UV light supply 312. This information can enable monitoring of the disinfection status for one or more areas or objects in the room. For example, an object may not be permanently located in the room and may be moved to another room. The object may or may not include a remote disinfection unit. In one configuration, the object may include a tracking circuit capable of identifying whether the object is in the room, its entry time, and its exit time. This information allows for monitoring the object's disinfection dose (e.g., dose duration, dose time, and dose intensity). In this way, the disinfection system can determine whether the object has been disinfected and is therefore authorized to be moved from one room to another.If the object is determined to be insufficiently disinfected, the 300 disinfection system can indicate that the object should not be moved and may prioritize disinfection in the room where the object is discarded to allow for its movement upon request. In one mode, if the object is moved, disinfection may be prioritized in the new room to which the object has been moved. The tracking circuit may include a Bluetooth Low Energy (BTLE) transceiver capable of communicating with the BTLE circuit deployed in the room, potentially within the 320 main unit. The object and / or remote disinfection units 310 may include one or more sensors capable of detecting contact with, or touches by, users or other objects in the room. This information can be communicated to the disinfection system 300 to be used as a basis for determining when and for how long to carry out a disinfection process. For example, if a keypad indicates that a user has touched it in the last hour, and the disinfection system 300 determines that no one is occupied in the room, a 360 UV light source on the keypad and / or one or more 160, 360 UV light sources in the room may be activated for a disinfection process.Contact between objects, such as contact between one or more medical instruments in a room and a surgical tray, can also be identified and used as a basis for determining whether to schedule a disinfection process for one or both objects, or for the room in which the objects are disposed of. For example, contact between two or more objects might indicate an action that occurred in the room (e.g., surgery), and a disinfection process could be scheduled based on the identification of that action. In one mode, the System 300 can monitor room activity through sensor feedback or communication from one or more devices. For example, when the HVAC system activates, changes in airflow can occur. These changes can stir up dust and other contaminants. The System 300 can increase air treatment in response to the HVAC activation to improve disinfection against dust and other contaminants. The System 300 can detect airflow, movement, and activity in the room to respond to potential contaminants. In one embodiment, the control system 200 of the lighting fixture 100 may include a controller circuit for the UV light source 160 or the visible light module 180, or both, under the control of the controller 236. The controller circuit may be a lamp driver excited by a PWM output of the controller 236. The UV light or the visible light, or both, may provide data signaling by producing pulses or gaps in the light that can be detected by devices near the lighting fixture 100. This communication technique may be used by the UVC lighting or the general visible lighting. Signaling via the UVC light may be used to control or coordinate other disinfection devices (e.g., a remote disinfection unit 310). The use of digital ballast or driver circuits controlled by the 236 controller allows for the definition and use of source intensities controlled by a PWM control method. The treatment time between movements in the room can be monitored. An accumulator can be used to track the average time between movements. Room treatment across multiple sensor outputs can provide a movement profile for each of the various sensors and systems. Room cleaning can be coordinated to activate the floor, for example, and allow ceiling treatment to begin. In one mode, the air handling system of the 100 lighting fixture can always be running to assist the disinfection process by increasing the reactor intensity and fan speed during deep cleaning cycles.When the 300 system detects environmental services (cleaning) or increased movement in the room (e.g., a patient with high needs), the airflow for air treatment can be increased and the reactor intensity can be increased. In one mode, a device ID can be associated with the lighting fixture 100 as the main unit 320. This device ID allows the device to synchronize with light-encoded pulses or patterns (e.g., UV and / or visible light). The association between the device ID and the lighting fixture 100 can be established through a network-based communication system (e.g., a cloud messaging system) through which the lighting fixture 100 and the remote disinfection units 310 can communicate. The remote disinfection units 310 that detect the light pattern of the lighting fixture 100 can be associated with the lighting fixture 100 and its device ID.The generation of a specific detectable pattern can be controlled by a microprocessor and programmable to be enabled by motion, BTLE beacons, WiFi links, remote network sensors or messages, or a combination thereof. In the embodiment illustrated in Figure 12, a disinfection system is provided according to a modality and is generally designated as 500. The disinfection system 500 may include a video and image processing circuit 510 operatively coupled to the occupancy monitoring and decision processing circuit 512. The room monitoring and statistics circuit 514 may provide information to the occupancy monitoring and decision processing circuit 512, which is operatively coupled to one or more sensors 518 (e.g., door or bed sensors). The communication interface 516 may couple the disinfection system 500 directly to a room control system or remotely to a separate system, which may be configured to monitor and control a room. The video images from the 500 disinfection system can use optics and infrared to track body counts, movement, and occupancy detection. The optical processor can identify any body size and is calibrated for everything from infants to adults, as well as body temperature. The system can also include audio sensors and a processor to recognize events and record them for statistical analysis and occupancy tracking. Bodies are counted for statistical event tallying, as well as patient information. These images are differentiated by profile and tracked to bed / bathroom, etc. V. UV Reflector In one embodiment of the present invention, a lighting accessory is provided for directing light onto a surface in a room. Such a lighting accessory according to one embodiment is shown in Figures 5 and 9-11 and is generally designated as 400. The lighting accessory 400 can be incorporated into a disinfection system 300 similar to the disinfection system 300 described herein, except that the lighting accessory 400 can be provided in addition to or instead of the lighting accessory 100. κηζοηη / ζζηζ / Ε / γίΛΐ It is observed that the disinfection system 300 includes a communication system 340 which, in one mode, uses UV light, optionally modulated UV light 330, to communicate with remote disinfection units 310. The communication system 340 can alternatively or additionally communicate with the remote disinfection units 310 using visible light 430 as shown in the mode illustrated in Figure 5. Communication can be provided by visible light through the presence or absence of visible light 430, or by modulating visible light 430. The lighting fixture 400 according to one modality may be similar to the lighting fixture 100 with several exceptions, including a reflector 464 that functions to direct UV light 462 within a light region 469. Similar to lighting fixture 100, lighting fixture 400 may include an air inlet 412, a treatment chamber 410, and an air outlet 414, similar respectively to air inlet 112, treatment chamber 110, and air outlet 114. A fan 440, similar to fan assembly 140, may direct air 492 through the air inlet 412 and through a filter 416 disposed near the air inlet 412. The air may be further directed through the air treatment chamber 410 and treated with UV light from a UV light source 460, which may be similar to UV light source 160. The fan 440 may facilitate the discharge of air 494 through the air outlet. 414 through a vent 418 after the air has been treated in the treatment chamber 410.The lighting fixture 400 may include a support member 450 similar to the support member 150 to support the lighting fixture 400 in room area 50. The fan may be monitored for current and / or load and may be PWM controlled. Based on one or more operating conditions (e.g., PWM duty cycle, monitored current, or monitored load, or a combination thereof), a change in pressure drop may be determined. In addition, or alternatively, based on one or more operating conditions, an end-of-life (EOF) indication may be determined. The system may include multiple fans, allowing for comparison of data between fans to determine whether one or more operating conditions are indicative of a fluid problem or a fan problem. In the illustrated embodiment, the lighting accessory 400 includes a visible light module 480, which may be similar to the visible light module 180 of the lighting accessory 100. Likewise, the lighting accessory 400 may include a control system 490, a source 452 and a switch 454, similar respectively to the control system 200, the power source 152 and the switch 154. The reflector 464 in the illustrated configuration can function to direct light from the UV light source 460 to one or more light outlets 471, 472. The light outlets 471, 472 and / or the reflector 464 can be configured to direct light within a light region 469 and toward a target surface 53, such as the ceiling or floor 55, in the configurations illustrated in Figures 9-11. The light region 469, as described herein, can be defined by a boundary line 461 parallel to the target surface 53 (for example, parallel to the ceiling) or converging with the target surface 53. For example, in the configuration illustrated in Figure 11, the boundary line 461 is shown parallel to the target surface 53 such that the distance D, 467 between the boundary line 461 and the target surface 53 is substantially constant. For the purposes of this invention, it is shown that the boundary line 461 has a different angle of UV light 462 directed towards the reflector 464 to the target surface 53 because the distance D, 467 is provided at a distance such that the light region 469 is outside a region of space that a person's head can occupy while standing in the room. For example, the distance D, 467 can be less than 15 centimeters (6 inches) with a ceiling of [missing information - likely a specific type of ceiling]. 243.84 centimeters (8 feet), so it is unlikely that a person standing in the room could place their head or eyes directly within the light region 469. As mentioned, for descriptive purposes, the boundary line 461 is shown to have a different angle from the UV light 462 in the illustrated mode. The boundary line 461 in the illustrated mode can form an angle α, 466 with respect to the target surface 53 so that it converges with the target surface 53 from a provided intersection point near the light aperture 471. In this way, the light region 469 is within a distance D, 467 or less from the target surface 53. The reflector 464 can be provided at an angle β, 468 to direct the UV light 462 into the light region 469 defined by the boundary line 461 and the target surface 53. In one embodiment, UV light 465 can be directed from the UV light source 460 to the reflector 464 and reflected onto the target surface 53 but within the light region 469. The UV light 465 can be directed through an outlet or aperture 472 of the lighting fixture 400, which can be permanently transmissive to UV light 465 but not transmissive to air. Alternatively, a UV light regulator according to one embodiment can control the transmission of UV light 465 to the reflector 464. In addition, or alternatively, one or both of the air inlet 412 and the air outlet 414 can be used to direct UV light 465 from the UV light source 460 to the reflector 464. In one embodiment, the reflectors and / or baffles of the lighting fixture 400 can be configured to transmit light in a plane parallel to or converging with the target surface 53. The lighting fixture 400 can have a reflector 464 that reflects light from the UV light source 460 within the light region 469, taking radian points on the lamp surface of the UV light source 460 and reflecting them along the parallel plane from the point closest to the UV light source 460 to the point farthest from the UV light source 460. The actual pitch can concentrate the light at the farthest range by virtue of the inverse square law to achieve a target intensity and define a possible dose at a target distance. The reflector 464 can distribute the light rays in that proportion.Optionally, a camera reflector 467 can be provided if the reflector 464 uses the output of a second part of the UV light source 460 to selectively redistribute that part of the energy along the distance by reflecting from the camera reflector 467 to the reflector 464 and onto the plane as provided in an attempt to homogenize the energy in relation to the inverse square law. κηζοηη / ζζηζ / Ε / γίΛΐ It is observed that the light region 469 can be defined in conjunction with other light sources described herein, including the remote disinfection units 310, as shown in the illustrated configuration of Figure 10. The remote disinfection unit 310 can be configured so that its UV light output is directed within a light region 469' defined by a boundary line 461' that is parallel to or converges with the target surface 53', which is the floor in the illustrated configuration. The boundary line 461' can be at an angle α, 316 with respect to the target surface 53', so that the UV light 312 from the remote disinfection unit 310 is confined to the light region 469' and is at a distance D, 317 or less from the target surface 53'. In this way, it is unlikely that a person occupying the room will place their head and eyes within the light region 469'. In one configuration, the parallel plane surface treatment used on the ceiling can be used to disinfect the floor. By restricting the parallel plane to a specific distance from the target surface, an inherent level of human protection can be provided while disinfecting hard-to-reach surfaces. In the illustrated configuration, a person's eyes would not be exposed to the UV light source unless they rested their head on the floor and looked directly at the emitter's surface. This set of events is considered unlikely, given that this position is unusual for a person in most environments, such as a hospital. To further reduce accidental UV exposure of sensitive tissue, the system, according to one configuration, can use motion, sound, and distance detection, or a combination thereof, to detect or listen for movement or presence.After motion or presence detection, a dirty flag can be set on the system and the UVC output can be deactivated. VI. Alternative lighting accessory In one embodiment of the present invention, a lighting accessory is provided for directing light onto a surface in a room. Such a lighting accessory according to one embodiment is shown in Figures 16-28 and generally designated as 600. The lighting accessory 600 can be incorporated into a disinfection system similar to the disinfection system 300, 300' described herein, except that the lighting accessory 600 can be provided in addition to or instead of the lighting accessory 100, 400. It is understood that one or more aspects of the lighting accessory 600 can be incorporated into the lighting accessory 100, 400, and that one or more aspects of the lighting accessory 100, 400 can be incorporated into the lighting accessory 600.It should also be understood that one or more aspects described in relation to the lighting accessory 100, 400, 600 may be absent from it, so that any subset of features described in conjunction with the lighting accessories 100, 400, 600 may be used to form a lighting accessory according to an embodiment of the present invention. Lighting fixture 600, according to one modality, may be similar to lighting fixture 100 in many respects. Like lighting fixture 100, lighting fixture 600 may include an air inlet 612, a treatment chamber 610, and an air outlet 614, similar respectively to air inlet 112, treatment chamber 110, and air outlet 114. A fan assembly 640, similar to fan assembly 140, may direct air 652 through the air inlet 612. The air may be directed through the treatment chamber 610 and treated with UV light from a UV light source 660, which may be similar to UV light source 160.The fan assembly 640 can facilitate the intake of air 652 through air inlet 612 via a vent 616 and facilitate the discharge of air 654 through air outlet 614 via a vent 618, after the air has been treated in the treatment chamber 610. In the illustrated embodiment, the fan assembly 640 includes four fans arranged close together and near the air outlet 614. The number and positions of the fans may vary depending on the application. The lighting fixture 600 may include a support member 650 similar to the support member 150 to support the lighting fixture 600 in a room area 50. The lighting fixture 600 in the illustrated embodiment may include one or more baffles 632 arranged near the air inlet 612 and the air outlet 614. The one or more baffles 632 may be similar to the one or more baffles 132 described in connection with the lighting fixture 100. For example, one or more baffles 632 may be arranged to substantially prevent UV light leakage from the treatment chamber 610 through the air inlet 612 and the air outlet 614. In the illustrated embodiment, the lighting accessory 600 includes a filter assembly 642 similar in many respects to the filter assembly 116 described in conjunction with the lighting accessory 100. The filter assembly 642 of the lighting accessory 600 may be located near the air outlet 614 instead of the air inlet 612. Alternatively, a filter assembly similar to the filter assembly 642 may be located near the air inlet 612 of the lighting accessory 600. The lighting fixture 600 may include a control system 690 that is similar in many respects to the control system 200 described in this document in conjunction with the lighting fixture 100. The control system 690 may be configured to control the operation of the lighting fixture 600, including the operation of the UV light source 660. For example, the control system 690 may include an operable UV light power source to control the power supply to the UV light source 660 to generate UV light. The control system 690 can be operationally coupled to a detection system 624, similar to the detection system 224 described in conjunction with the lighting accessory 100. The detection system 624 can be configured differently from the detection system 224 so that one or more sensors of the detection system 224 can be absent and / or the detection system 624 can include one or more sensors described separately from a detection system 224 in relation to the lighting accessory 100. As an example, the detection system 624 may include a UV light sensor circuit similar to the UV light sensor circuit 256. In one mode, with the detection system 624 including a UV light sensor circuit, the UV light sensor circuit may be configured to detect UV light within the treatment chamber 610. Such a UV light sensor circuit may function to provide a sensor output indicative of the UV light intensity within the treatment chamber 610. The lighting fixture 600, as illustrated, includes a visible light assembly 680 operable to form a part of the treatment chamber 610. The visible light assembly 680 can be moved to allow at least one access point to the treatment chamber 610 for maintenance and discharge of UV light from the treatment chamber 610 into a room. In cases where the visible light assembly 680 can be moved to allow UV light discharge into the room, the visible light assembly 680 can function as a UV light regulator similar to the UV light regulator 120 described herein. The visible light assembly 680 in one mode can be moved by human manual input between open and closed positions relative to the treatment chamber 610. Alternatively, a visible light assembly 680 can be operatively coupled to an actuator capable of moving the visible light assembly 680 between open and closed positions relative to the treatment chamber 610. The mode illustrated in Figure 24 represents the visible light assembly 680 in an open position, and the mode illustrated in Figure 26 represents the visible light assembly 680 in a closed position. In the embodiment illustrated in Figure 25, the visible light assembly 680 may be viewed with an operable hinge 672 to allow the visible light assembly 680 to pivot with respect to the lighting fixture 600. The hinge 672 can move within a groove 675 of a frame 670 of the lighting fixture 600, with an end portion 673 larger than the groove 675 to prevent the hinge 672 from permitting movement of the visible light assembly 680 beyond a position defined by the engagement of the end portion 673 with the groove 675. The hinge 672 may include a coupling portion 674 attached to the visible light assembly 680 that can be operated to engage the hinge 672 with the visible light assembly 680. It should be understood that the hinge 672 may have a configuration different from the configuration shown in the illustrated embodiments.It should also be understood that the visible light assembly 680 can be attached to the lamp via more than one hinge 672. The visible light assembly 680 in the illustrated embodiment may include a reflector 686 operable with the visible light assembly 680 in the closed position to reflect UV light from the UV light source 660 into the treatment chamber 610. In the embodiment illustrated in Figure 24, one or more additional surfaces of the treatment chamber 610 may include reflective aspects, such as a reflector 688 in front of the reflector 686. The reflectors 686 and 688 may cooperate to enhance air disinfection within the treatment chamber 610. In one embodiment, the reflector 686 of the visible light assembly 680 may include a visible light reflector operable for reflecting visible light received from a visible light source 682 into an area of ​​the room. In this way, the reflector 686 may be a double-sided reflector operable for reflecting UV light into the treatment chamber 610 and for reflecting visible light into the room. The visible light assembly 680 may include a visible light source 682 configured similarly to a light source in the visible light module 180 of the lighting fixture 100. In the embodiment illustrated in Figure 25, the visible light source 682 may be arranged to direct light in a generally transverse manner with respect to a visible light target direction for the visible light assembly 680. The visible light source 682 may be arranged within a channel 653 of the frame assembly 651 of the visible light assembly 680. The visible light source 682 in one embodiment may be a strip, with a plurality of light sources, arranged to couple a base surface 658 of channel 653 and within channel 653 along the frame assembly 6510. The visible light source 682 may be captured within channel 653 by first and second protrusions 656A-B separated from the base surface 658 of channel 653. A visible light director 684 may be disposed at least partially within the channel 653 as shown in the illustrated embodiment of Figures 16-28. The channel 653 of the frame assembly 651 may support the visible light director 684 such that a portion of a room-facing surface 688 of the visible light director 684 is exposed to the room to facilitate the direction of visible light into the room. The visible light director 684 may include a side surface 687 (for example, a perimeter surface) that can function to receive light from the visible light source 682. In the illustrated embodiment, the light received through the side surface 687 can be directed into the visible light director 684 and transversely with respect to the side surface 687 toward the room-facing surface of the reflector 688. In the illustrated embodiment, the visible light director 684 is a lenticular lens operable to facilitate the direction of light received from the visible light source 682 within the channel 653 toward the room-facing surface of the reflector 688. This is illustrated in Figures 31A-31B and 33A-B. The lenticular lens may include one or more physical features (e.g., holes or depressions) that facilitate the direction of light from the interior of the lenticular lens to an external area. The lenticular lens may be arranged close to the reflector 686, 688, as described herein, and may receive light from one or more light sources 683, which may be arranged on one or more sides of the lenticular lens. In the illustrated embodiment, the lenticular lens includes depressions 693 (e.g., micro-domes) that vary in size along at least one axis 692 of the lenticular lens, and facilitate the direction of a substantially uniform amount of light from the lenticular lens despite a light source 682 being provided at an edge of the lenticular lens. For example, depressions 693 can be shallower 695 closer to the light source 682, and deeper 695 farther from the light source 682. Shallower depressions 693 can direct, away from the lenticular lens, a smaller portion of more intense light that is closer to the light source 682. And deeper depressions 693 can direct a larger portion of less intense light that is farther from the light source 682.There may be a type of inverse relationship between the depth 695 of the depression and the distance from the light source 682 to facilitate the direction of external light to the lenticular lens, which is generally considered uniform across a surface 697 of the lenticular lens. The depressions 693 can be formed in various ways, including laser drilling. According to one modality, the lenticular lens allows a light source 682 to be positioned near an edge of the lens, saving space and reducing costs, while still being able to direct the light transversely across the surface 697. The spacing 696 of the depressions 693 can depend on the configuration of the lenticular lens, including the intensity of the light source 682 and the surface area of ​​the surface 697. In one modality, the lenticular lens can include first and second light sources 682 arranged on opposite sides of the lens. In this configuration, the depth 695 can be deeper near the midpoint between the two sides than the depth 695 closer to each side, as shown in the modality illustrated in Figure 31B. The lenticular lens is described herein in conjunction with a light source 683 that generates visible light. It should be understood that the present invention is not so limited, and that the light source 683 may include alternative or additional light sources. For example, the light source 683 may include a UV light source 689 or an IR light source 699, or both. The energy from the UV light source 689 and / or the IR light source 699 may be directed to one or both surfaces 696, 697 of the lenticular lens. For example, the IR light source 699 may be used to direct IR light to the room area 50 in a modulated manner for communication. Communication can be used for asset tracking in conjunction with IR sensors arranged in room area 50. The energy from the UV light source 689 can be directed to room area 50 for disinfection purposes, such as when a detection system indicates that there are no people within room area 50. In the illustrated embodiment of Figures 31A and 31B, a lens configuration with an illuminated edge is shown according to one embodiment of visible light assembly 680. The optics may allow the light guide or lens to have tens of thousands of optical holes that change the direction of the light output from the light source 683 (e.g., LEDs). The printed circuit board assembly (PCBA) associated with the light source 683 may include LEDs that generate one or more types of energy, such as IR, UV, or white and colored light. κηζοηη / ζζηζ / Ε / γίΛΐ IR can be used for asset tracking systems to identify a room. A network and Wi-Fi system with asset tracking sensors can be used to identify an IR light code within the room or area. The PCBA can be supported by an extrusion that serves as a heat sink and structural frame, and can be driven by a PWM circuit or a general controller ballast, depending on the application. The UV 689 light source can generate ultraviolet energy that can be mixed with visible and IR lighting for use during a time controlled by the controller and potentially only when it is verified that the occupancy is unoccupied by people or animals. In one embodiment, the lenticular lens can also be configured to allow light to pass through a surface 696 to another surface 697 external to the lenticular lens. For example, the lenticular lens can be configured to direct visible light from a light source 683 located at the edge transversely to a lower surface 697 of the lenticular lens. Additionally, the lenticular lens can be configured to direct UV light from an upper surface 696 to the lower surface 697 in a substantially direct manner. It should be understood that, although the visible light module 680 is described in conjunction with an air treatment assembly, the present invention is not limited to it. The visible light module 680 with the lenticular lens can be configured for a variety of uses, some of which may not include a visible light source and instead generate only UV light using the light source 682, which includes UV light sources. In the embodiment illustrated in Figure 32, the lenticular lens configuration with a light source 682 configured for UV light (optionally also visible light) is shown for a low-profile disinfection area associated with a keyboard 750 or other type of user interface. The lenticular lens can be provided in a low-profile keyboard storage area. This area can be illuminated with general visible light for viewing and also with ultraviolet energy for ultraviolet disinfection.When the keyboard 750 is removed, an open area disinfection array 751 can be used to disinfect the keyboard 750. A sensor on a sliding keyboard, such as a magnetic sensor, can be used to detect input versus output, and as a basis for controlling the operation of the light source 682 (e.g., to emit visible and / or UV energy). The frame assembly 651 may consist of several extruded components that define the channel 653 and can be joined by corner brackets 659. In the illustrated embodiment, the frame assembly 651 is a rectangular component with four corner brackets 659 and four extruded corner components arranged respectively between each corner bracket 659. The frame assembly 651 may include the channel 653 defined around the entire perimeter of the frame assembly 651. Note that the visible light source 682 may be arranged within the channel 653 along one or more sides of the frame assembly 651. For example, the visible light source 682 may be arranged along one side of the frame assembly 651 within the channel 653. Two views of an exemplary embodiment of a corner bracket 659 are shown in Figures 23A-23B. The corner bracket 659 may include first and second support extensions 655A, 655B operable to fit within the respective extruded components of the frame assembly 651. The corner bracket 659 may also include first and second coupling portions 656A, 656B that can also be operated to fit within a respective extruded component of the frame assembly 651. The corner bracket 659 may include openings 657 to facilitate the installation of a fastener (not shown) for connecting the extruded component to the corner bracket 659. Turning to the illustrated embodiment of Figures 29 and 30, the lighting fixture 600 may include a control system 690 similar in many respects to the control system 200 described herein. It is noted that the control system 690 in the illustrated embodiment represents connections between components in a variety of ways and groups components in different ways. It is understood that the groupings are not limited; rather, the groupings are provided for the purposes of the invention to facilitate discussion and understanding of the operational aspects of the components of the control system 690 and the coordination of operational aspects among various components of the control system 690. In the illustrated embodiment, the control system 690 may include a power source 622, similar to power source 152, and capable of supplying power from an external source and / or a portable source such as a battery. In the illustrated embodiment, power source 622 includes utility power in the form of equipment line, ground, and neutral connections (for example, for 120 V AC power). Power source 622 may also include a switched line connection operable to supply power to a visible light controller 645, which may be similar to the visible light controller 245 discussed herein. The switch line connection may be provided by a switch (not shown) similar to switch 154 described in connection with lighting fixture 100. The control system 690 may also include a power management circuit 639 similar to the power management circuit 239. The power management circuit 639 may include a DC power source 710 operable to receive power from the power source 622 and convert the received power (such as 12 V DC). In the illustrated embodiment, the power management circuit 639 includes grounding and DC power or power distribution to a variety of control system components 690, including one or more fans of the fan assembly 640 and the visible light controller control circuit 645. The power management circuit 639 in the embodiment illustrated in Figure 30 is associated with the UV controller circuit 712 or the ballast circuit capable of applying power in a controlled manner to the UV light source 660. The control system 690 of the illustrated modality may include a controller 636, similar to the controller 236 of the control system 200. The controller 636 may direct one or more components of the lighting fixture 600 for operation, including, for example, directing the output of the visible light source 682 and the output of the UV light source 660. The controller 636 in the modality illustrated in Figure 30 may include a regulator circuit 714 to receive power from the DC power source 710 and convert the received power into a form usable by a microcontroller 716. The controller 636 may include an operable status circuit 718 to indicate one or more states of the controller 636, such as the active state. The 636 controller can operate to provide one or more control signals to components of the 690 control system, including pulse-width modulated signals, discrete signals, analog signals (e.g., 0 to 10 V), and serial communications. The 636 controller can also operate to receive one or more control signals from other components of the 690 control system. Based on these one or more control signals, the 636 controller can determine whether to change the state of an output control signal to another component or to the same component from which the control signal was received. The control system 690 may include a room sensor interface 625 similar to the room sensor interface 255 described in conjunction with the control system 200. For example, the room sensor interface 625 may include a door switch capable of generating an output indicating whether the door to room area 50 is closed or open. As discussed herein, the door status can be used as a basis for determining whether UV light from the UV light source 660 should be directed into the room. The control system 690 can accept connections to external interfaces or external circuits 646, such as fire suppression circuits 720 or a light switch 722 (which may be similar to switch 154 in one configuration). The external circuit 646 can provide inputs to and / or receive outputs from the controller 636 to facilitate operation. For example, the light switch 722 can provide an output to the controller 636, which can then control the operation of the visible light source 682 based on the state of the light switch 722. As another example, the controller 636 can control the operation of the lighting fixture according to one or more predetermined states based on the activation of the fire suppression components as indicated by the fire suppression circuit 720. The control system 690 may include a sensor and feedback circuit 626, similar in some respects to the sensor circuit 256 of the control system 200. The sensor feedback circuit 626, for example, may detect the presence of UV light or the intensity of UV light generated by the UV light source 660 and provide a sensor output indicative of the detected characteristic to the controller 636. Based on the sensor feedback from the sensor and feedback circuit 626, the controller 636 may adjust the operation of the lighting fixture 600, such as [missing information], by increasing or decreasing the output power of the UV light source 660. In one embodiment, the sensor and feedback circuit 626 may include an error indicator 734, such as an LED indicator, which may indicate a fault.Controller 636 can identify a fault condition based on sensor feedback indicating that the UV light source 660 is operating outside of target parameters. The sensor and feedback circuit 626 may additionally or alternatively include a photocell or light sensor 724 capable of detecting at least one UV light and one visible light. The light sensor 724 can provide a sensor output indicative of the detected light intensity. The control system 690 in the illustrated mode, as described herein, may include a visible light controller 645 capable of controlling the power supply to the visible light source 682 according to a target parameter. The visible light controller 645 in the illustrated mode includes a light control module 726, which may be incorporated into the controller 636 in one mode, but is shown separately in Figure 29 for informational purposes. The light control module 726 may receive commands from a user similar to the user interface described in conjunction with the visible light controller 245 of the control system 200. For example, the light control module 726 may receive a brightness command from a dimming control element 728, and may receive a color temperature command from a color control element 730.The dimming control element 728 and the color control element 730 can be integrated into a user interface provided on a smartphone or can be provided in an interface installed within room area 50. In one configuration, the electronics for the LED drivers, ballast drivers, fan drivers, and IoT control can be provided in a single electronic package, resulting in significant cost savings compared to separate configurations and providing a competitive advantage. This combined electronic configuration can be adapted for either AC or DC input voltages. The visible light controller 645 may include an operable LED driver 732 to supply power in a controlled manner to the visible light source 682. In one embodiment, the LED driver 732, as described herein in conjunction with the control system 200, may include a controlled current source and / or a controlled voltage source to supply power to the visible light source 682. In one embodiment, the power supplied from the LED driver 732 may be pulse-width modulated. In the configuration illustrated in Figure 30, the visible light controller 645 can receive an intensity directive from the controller 636 in the form of an analog signal that varies between upper and lower limits, with the upper limit corresponding to a higher intensity level and the lower limit corresponding to a lower intensity level. For example, the intensity directive might be in the range of 0–10 V, with 0 V corresponding to 10% intensity and 10 V corresponding to 100% intensity. The controller 636 of the control system 690 and the modes illustrated in Figures 29 and 30 are operable to direct the operation of the fan assembly 640. As an example, the controller 636 can direct the power management circuit 639 to supply power to the fans of the fan assembly 640. The control system 690 of the lighting fixture 600 may include a reactor circuit 611, which includes, for example, the UV light source 660. The reactor circuit 611 in the embodiment illustrated in Figure 30 includes a fan control circuit 736 operable to supply power in a controlled manner to one or more fans of the fan assembly 640. The fan control circuit 736 may provide feedback in the form of pulses (for example, tachometer pulses) indicative of a rotational speed of one or more fans of the fan assembly 640. This feedback may be provided to the controller 636, which may supply a fan speed control signal (for example, a pulse-width modulated signal) to the fan control circuit 736.The 736 fan control circuit can supply power to one or more fans of the 640 fan assembly according to the fan speed control signal. The reactor circuit 611 in the illustrated embodiment includes a temperature sensor 738 (e.g., a thermistor) operable to provide a signal to the controller 636 indicative of an internal temperature of the reactor or air treatment chamber 610. In one embodiment, two thermistors can be used to monitor the airflow. Alternatively, or additionally, a tachometer output can be provided from each fan for preventive maintenance, service monitoring, and airflow determination. Conventional pressure sensors for low air velocities can be inaccurate and prohibitively expensive. One embodiment according to the present invention includes thermistors to provide a more accurate and / or more cost-effective system for measuring air velocity at low speeds. The two sensors can be connected to a Wheatstone bridge to identify the temperature difference.One of the sensors may be coated to reduce the impact of wind or airflow and measure the base temperature. The resulting difference is the airflow that cools the thermistor. The reactor circuit 611 may include a REID reader 740 configured to detect or read information from a REID tag 641 associated with the filter assembly 642. In one mode, the REID reader is configured to operate at approximately 125 kHz. The REID information may be transmitted to the controller 636. Alternatively, the controller 636 may transmit information for storage on the REID tag 641 of the filter assembly 642. The controller may track information such as the usage time of the filter assembly 642 to allow the controller to determine whether one or more criteria associated with the filter assembly 642 are met. For example, criteria such as usage beyond a specific time period may trigger a state recommending replacement of the filter assembly 642.The reactor circuit 611 in the illustrated form may include a REID 638 tag associated with the UV lamp 660, which may be similar to the REID 238 tag described in conjunction with the control system 200. In the embodiment illustrated in Figure 30, the reactor circuit 611 includes an operable interlock 742 to provide feedback to the controller 636 indicating a state of the reactor or treatment chamber 610. For example, the interlock 742 can indicate whether the visible light module 680 is in the closed or open position. In one embodiment, if the interlock 742 indicates that the visible light module 680 is open, the controller 636 can be prevented from activating the UV light source 660. Vil. Combined air disinfection system with lamp One aspect of the present invention relates to a lighting assembly that includes an air disinfection system for pathogen reduction. For example, the lighting assembly may include a visible light source, a lamp housing element having a cavity, and an air disinfection system installed within the cavity, wherein the air disinfection system includes a UV light source and the cavity forms a UV light disinfection chamber with an air inlet for receiving untreated air and an air outlet for removing air treated by the UV light source. The lamp can essentially be a type of lamp that can be adapted to include an air disinfection system. For example, the lamp can be a portable light assembly, such as a table or floor lamp, that includes a lampshade with a cavity capable of housing air disinfection components and forming a suitable UV light disinfection chamber. For example, some portable lamps have a shade that forms a cavity. Some portions of the shade assembly may be opaque to visible light (for example, a steel surface), and other parts of the shade assembly may transmit visible light (for example, a light diffusion plate). The shade assembly may be wholly or partially opaque or reflective to UV light.The screen assembly surfaces (internal, external, or both) can be partially or fully coated with a material that gives the screen assembly, or parts thereof, UV-reflective properties. These UV-reflective properties can help convert the screen assembly cavity into a UV air treatment chamber. An example of a combined lamp air disinfection system is illustrated in the table lamp shown in Figures 34A–34C. Figure 34A shows a partial side perspective view of the table lamp, while Figures 34B and 34C show representative sectional views. The air disinfection system is integrated within the cavity formed by the lampshade assembly. In this case, the upper metal surface 3408 of the lampshade assembly and the lens 3411 work together to form an open air cavity capable of housing the air disinfection components. The 3401 lamp body can be used to conceal and route cables for power and control functions. In some cases, the 3401 lamp body can be used to control the lamp's functionality (for example, turning the visible light on and off, turning the UV light on and off, or otherwise controlling the air / lamp disinfection functionality). For example, the 3401 body may include capacitive sensors that control the desired functionality, or physical buttons or other actuators may be integrated into (or arranged on) the 3401 lamp body. The visible light source of lamp 3480 can be mounted in a lampholder 3481 arranged within the lamp cavity formed by the lampshade assembly. The lampholder can be attached directly to the base, to a harp support screwed onto a threaded tube, or attached to the lampshade or base assembly. In some embodiments, a lamp harp (not shown) can be included to support the inner structure 3409 or a portion thereof, for example, when the inner structure 3409 is a structure distinct from the lampshade assembly. In some embodiments, the internal structure 3409 cooperates with the metal surface 3408 to form the cavity 3410. In other embodiments, the metal surface 3408 cooperates with the diffuser plate 3416 to form the cavity 3410.For example, the metal cover 3408 and the lens 3411 can be coupled and held by the body 3401 to form either a single open air chamber or two open air chambers separated by the inner structure 3409. The visible light source 3480 of the lamp can be arranged within the cavity of the lampshade assembly 3410. Because the parts of the lampshade assembly are metallic (e.g., steel), the visible light is reflected and directed toward the lens 3411 above a table near a user. The visible light can be directed toward a lens 3411 of the lamp, which can diffuse the light before providing it onto a table in the vicinity of the user. A similar configuration can be provided in the form of a floor lamp where the body includes a post forming a pendant lamp configuration (see Figures 35A-35B) with the post connected to the top of the shade. The air disinfection system can be integrated with the lamp assembly during manufacturing or retrofitted to an existing lamp assembly. Lens 3411 can be arranged near the part κηζοηη / ζζηζ / Ε / γίΛΐ 100 lower of the inner surface 3409 and the wall 3408. The lens 3411 can be a sheet of light transmitting material capable of diffusing the light from the lamp before placing it on a table or other surface. Figure 34B illustrates a side section view, and Figure 34C illustrates a top section view. The air disinfection system may include a germicidal light source 3460 that operates to generate UV light. The air disinfection system may also include a UV treatment chamber 3410 having an untreated air inlet 3412 and a treated air outlet 3414. The UV treatment chamber has an operable air treatment region for receiving air from the untreated air inlet and for directing air to the treated air outlet, where UV light from the germicidal light source 3460 is directed into the air treatment region. The UV treatment chamber 3410 can be defined at least in part by a wall 3408 of the portable light assembly. For example, the portable light assembly 3400 can include a lampshade having a housing configuration that can be adapted to form a UV chamber 3410. The wall 3408 is substantially opaque to the UV light exiting the germicidal light source 3460. In one embodiment, the wall 3408 is made of metal or metal-like material and is substantially opaque to light. In embodiments κηζοηη / ζζηζ / E / γίΛΐ 101 alternatives: the 3408 wall can be substantially opaque to UV light but allow visible light diffusion. The UV air treatment system components can be concealed within the UV chamber. If the lampshade is not opaque to visible light, the UV treatment components can be positioned within the shade housing to either not significantly disrupt visible light diffusion through the shade or to strategically disrupt visible light diffusion in an aesthetically pleasing manner. The UV treatment chamber 3410 may be defined, at least in part, by a wall 3409, an interior wall 3409 of the portable light assembly. For example, the portable light assembly 3400 may include a lampshade having a housing configuration that can be adapted to form a UV chamber 3410. The wall 3409 may be substantially opaque to UV light exiting the germicidal light source 3460. In one embodiment, the wall 3409 is metal or metal-like and substantially opaque to all light. In alternative embodiments, the wall 3409 may be substantially opaque to UV light but permit diffusion of visible light. The components of the UV air treatment system may be concealed within the UV chamber. If the lampshade is not opaque to visible light, the components of the treatment κηζοηη / ζζηζ / Ε / γίΛΐ 102 UV filters can be placed inside the screen housing to either not significantly disrupt the diffusion of visible light through the screen or to strategically disrupt visible light to allow diffusion in an aesthetically pleasing manner. In one embodiment, the underside of the inner wall 3409 of the portable light assembly can be a visible light reflector for the visible light source 3480 of the portable light assembly. The portable lighting assembly 3400 may include a treatment chamber 3410 through which air can be directed and in which the air can be treated with UV light from a UV light source 3460. The UV light source 3460 may be a germicidal light source operable to generate UV light in response to the power supply from the power source 3452. For example, the UV light source 3460 may be a UV-C source, such as a cold cathode lamp, a low-pressure mercury lamp, or UV-C light-emitting diodes. The UV treatment chamber 3410 may include a joint interface 3418. The joint interface 3418 may be arranged between an outer wall 3408 and an inner wall 3409 of the lamp screen. That is, the UV treatment chamber may include a joint interface attached to a wall of the UV treatment chamber. The joint interface may function to contact a part of the [missing information - likely a specific component or device]. 103 Portable light assembly. The gasket can be configured to substantially prevent the leakage of UV light from the germicidal light source 3460 into the external environment and to prevent air leakage. The gasket interface can be a C-shaped gasket that receives a wall of the UV treatment chamber and seals against the wall of the portable light assembly. The C-shaped gasket can form a compression seal with the wall or walls of the portable lighting assembly. The UV chamber can be defined by a combination of gasket interface 3418 and lampshade walls 3408, 3409. The power applied to the UV light source 3460 can be a conditioned form of power from the power source 3452. For example, the power source 3452 can operate to supply AC power. The portable light assembly 3400 can include a circuit to condition the AC power into sufficient DC power to operate the UV light source 3460. The DC power can be constant or pulsed, depending on the operating specification and target parameters for the UV light source 3460. In pulsed DC configurations, the power can be variable, for example, by varying the DC pulse between 90% and 30% to supply power according to a target operating parameter. In one mode, untreated air can enter κηζοηη / ζζηζ / Ε / γίΛΐ Air enters the treatment chamber 3410 through an air inlet 3412, and the treated air can exit the treatment chamber 3410 through an air outlet 3414. The air inlet 3412 can be in fluid communication with a filter assembly 3416, which can be configured to filter particles from the untreated air before it is treated with UV light in the treatment chamber 3410. The filter assembly can include a filter having a Minimum Efficiency Reporting Value (MERV) selected according to the application. For example, in some configurations, the filter is a MERV6 filter. Removal and replacement of the filter assembly 3416 can be carried out periodically to prevent substantial clogging of the filter assembly 3416 or for other maintenance benefits. The untreated air inlet 3416 and the treated air outlet 3418 may be defined at least in part by a wall 3408, 3409 of the portable light assembly 3400.The cross-sectional area of ​​the untreated air inlet 3416 may be larger than the cross-sectional area of ​​the treated air outlet 3414 to facilitate airflow through the UV chamber. In one embodiment, the filter assembly 3416 can be arranged so that one or both sides of the filter assembly 3416 are in a light path from the UV light source 3460. κηζοηη / ζζηζ / Ε / γίΛΐ In this way, UV light can 105 Direct the UV light to filter assembly 3416 to decontaminate all or part of filter assembly 3416. The UV light applied to filter assembly 3416 can be applied selectively, or filter assembly 3416 can be positioned to receive light from UV light source 3460 while UV light source 3460 is active. Filter assembly 3416 can be placed within the airflow path between air inlet 3412 and UV treatment chamber 3410. As discussed herein, the treated air may exit the treatment chamber 3410 through an air outlet 3414. The air outlet 3414 may include a vent configured to permit airflow through it at a flow rate sufficiently greater than the flow rate of the treated air. In other words, the vent may be configured to substantially prevent restriction of airflow through the treatment chamber 3410. The vent may include a plurality of openings, each sized to substantially prevent the entry of unsuitable objects (e.g., hands and fingers) into the treatment chamber 3410. The portable light assembly 3400 may include a fan assembly 3440 that functions to direct air through the treatment chamber 3410 from the air inlet 3412 to the air outlet 3414. In the modality As illustrated in Figure 106, the fan assembly 3440 is arranged near the air outlet 3414; however, it should be understood that the present invention is not so limited. The fan assembly 3440 may be arranged or provided in a different position to direct air through the treatment chamber 3410. The fan assembly 3440 may include a fan that can operate to direct air through the treatment chamber 3410 at a target flow rate for disinfecting or decontaminating the air by applying UV light within the treatment chamber 3410. As an example, the target flow rate may be 50 CFM. In one embodiment, the fan assembly 3440 may be variable so that the airflow rate through the treatment chamber 3410 may be increased or decreased under the direction of a control system 200 of the lamp assembly 3400.For example, the 3400 portable light assembly, which includes the air disinfection system, can be controlled remotely via a wired or wireless connection. Control can be provided through a power connection to the lamp assembly or through a separate control connection. In one embodiment, the portable light assembly 3400 may include a driver circuit 3406 for the UV light source 3460 or the visible light module 3480, or both, under the κηζοηη / ζζηζ / E / γίΛΐ 107 Control of a local controller or a remote controller 200, located elsewhere at the portable light assembly 3400 or on a remote server connected via the Internet. The controller circuit 3406 can be a lamp driver driven by a PWM output of the controller 200. UV light or visible light, or both, can provide data signaling by producing pulses or gaps in the light that can be detected by devices near the lamp assembly 3400. This communication technique can be used by UVC lighting or general visible lighting. Signaling via UVC light can be used to control or coordinate other disinfection devices. The control system can be located outside the UV treatment chamber 341, but locally within the lamp assembly. The disinfection control system can be concealed within a portion of the portable light assembly so that it is hidden from view by an observer of the portable light assembly. For example, the control circuit can be located with the power supply circuit 3452 and / or the activation circuit 3406. The disinfection system can be an upgrade system for a portable light assembly. For example, a pre-existing lamp can be modified by installing a disinfection system. 108. An air inlet, an air outlet, a UV lamp, and a fan are located within an internal cavity of the lampshade or other lamp compartment. The visible light controller can be used to drive the UV light source, and the visible light power source can be used to power the UV light bulb and fan. In some configurations, the air handling system may not include a fan. The disinfection control system may include an operable proximity sensor to detect a user's proximity. Proximity detection can be provided by a variety of different sensor types or combinations of sensors, such as infrared sensors, time-of-flight sensors, accelerometers, or essentially any other sensor capable of detecting human presence or proximity. The disinfection control system can then change state based on a user's proximity to the portable light assembly. An alternative construction of an air disinfection system with a combined lamp according to another embodiment of the present invention is illustrated in the side and top section views of Figures 35A and 35B. In this embodiment, the light assembly 3500 can be a pendant light or a floor light, wherein the body 3501 109 is attached to the top wall of the lamp housing 3508. This construction may be similar to that of the table lamp in Figures 34A-34C. One variation is that the gasket interface 3518 can be configured to provide an air inlet on one side of the lampshade housing and an air outlet on the other side. Air may enter through the air inlet 3512 and flow through a filter 3516, as in the embodiment of Figures 34A-34C, but instead of having an air outlet in the top wall 3508 of the housing, a fan 3540 can be oriented to direct treated air through an outlet 3514 in the bottom wall 3509 of the lampshade housing. In one embodiment, the air inlet 3512 or the air outlet 3514, or both, may have notches in a lens 3511 of the light assembly (for example, a visible light lens and a diffuser element).The air inlet 3512 or the air outlet 3514, or both, may be formed by a notch provided in the perimeter of the lens 3511. Alternatively, the air inlet 3512 or the air outlet 3514, or both, may be defined by an opening in the lower wall 3509. The air inlet 3512 and the air outlet 3514 may be configured to provide a target amount of airflow for the system to provide effective disinfection. κηζοηη / ζζηζ / Ε / γίΛΐ 110 VIII. Energy management system A power management system 3600, illustrated in Figure 36, is provided according to the present invention to control and power the air disinfection system. The air disinfection system may include various hardware devices for airborne pathogen reduction. For example, separate airborne pathogen reduction hardware modules may be provided throughout a room. Each of these airborne pathogen reduction hardware modules may include one or more different systems, such as one or more power control systems 3610, one or more engineering control systems 3612, and one or more pathogen reduction systems 3614. An example of a 3610 energy control system that can be included in an airborne pathogen reduction hardware module is remote energy monitoring. The energy control system can include one or more sensors—for example, current, voltage, energy, or other types of sensors—that can monitor the amount of energy received and consumed and report this information to a control system, such as the 200 control system described in relation to Figure 2. Local or remote lighting modules can be connected to a master disinfection control system, such as the disinfection control system described in Figure 2. 111 of Figure 2. Separate power and control cables can be connected to the disinfection control system. For example, one of the airborne pathogen reduction hardware modules can be the disinfection control system in Figure 2 and coupled to other airborne pathogen reduction hardware, such as the portable lamp assembly in Figures 34A-34B and 35A-35B, via a multipoint AC-to-DC controller and / or a network interface, such as the 3702 network interface.As explained in this document, Power over Ethernet can be used for communications and power connections, but in alternative modes, a wireless network connection can be used between the airborne pathogen reduction hardware or a wireless or wired network connection to a common server, such as a cloud-based server where control and data collection can be implemented as part of a 3602 cloud-based control system. Examples of 3612 engineering control systems include maintenance monitoring modules, prospective occupancy infrared (FLIR) modules, light detection and ranging (LiDAR) modules, time-of-flight (TOF) modules, and network interface modules. These various 3612 engineering control systems can be [missing information - likely a typo or ... 112 to be included in airborne pathogen reduction hardware to provide engineering control functionality. These modules are exemplary and other types of engineering control system modules can be provided, alone or in combination with other engineering control modules depending on the desired functionality of the airborne pathogen reduction hardware. Examples of pathogen reduction systems 3614 that can be used in airborne pathogen reduction hardware include one or more air control, fan control, whole room lighting and ultraviolet-C disinfection, surface disinfection systems, support hardware and other miscellaneous items for pathogen reduction systems can provide disinfection functionality. Airborne pathogen reduction hardware can be powered from a 3606 multipoint AC-to-DC controller connected to the electrical grid. A multipoint AC-to-DC controller can provide low-voltage differential oscillating multipoint connections. In other words, a multipoint controller can supply power to multiple different airborne pathogen reduction hardware systems. Power can be supplied through daisy-chain connections of airborne pathogen reduction hardware or through connections. 113 parallel lines, as shown in Figure 36. In the current mode, the multipoint AC-to-DC controller converts AC power into 42-56 VDC, or 48-56 VDC, or another voltage level sufficient to power the airborne pathogen reduction hardware, and distributes power to the airborne pathogen reduction hardware modules for operational power. The multipoint controller can also provide network connections to airborne pathogen reduction hardware via the low-voltage network. In some configurations, the multipoint controller acts as a single controller capable of transmitting and receiving data to and from multiple airborne pathogen reduction modules simultaneously or sequentially. The multipoint controller may include a network interface or connect to an external 3604 network interface, as shown in Figure 36. The 3604 network interface can connect to the cloud to provide internet communication and Internet of Things (IoT) functionality to the airborne pathogen reduction hardware. For example, data can be collected and managed through a cloud-based service.In addition, airborne pathogen reduction systems can be controlled and monitored from a remote device that communicates with a cloud-based server or with the 3606 multipoint controller. κηζοηη / ζζηζ / Ε / γίΛΐ 114 The multipoint controller can provide various functions related to airborne pathogen reduction hardware. For example, it can monitor current, control schemes, balance between various parameters, manage power consumption, and handle communications. For instance, it can connect to airborne pathogen reduction hardware using DC copper or Power over Ethernet (PoE) and manage those connections. Figure 37 illustrates an example of a 3702 network interface and associated topology that can be used in connection with a power management system of the present invention. Power over Ethernet (PoE) generally describes any standard or ad hoc system that passes electrical power along with data over Ethernet cabling. The 3702 network interface shown here has eight ports: five PoE ports and three communication ports that provide communication but do not provide Power over Ethernet. In alternative configurations, the network interface may have additional or fewer PoE ports and communication ports. The 3702 network interface includes a power input that can be connected to the electrical grid or another power source. The 3702 network interface also includes a 115 Incoming network connection, such as a fiber internet connection that allows the network interface to communicate with cloud-based services or with other remote servers or computers. PoE network interface ports allow a single cable to provide both data and power to devices. In the configuration shown, power and communication can be provided to the 3712 surface treatment devices and the 3706 airborne pathogen reduction hardware units—for example, the units shown including an air treatment module 3714 and a visible lighting module 3716. PoE connections can be provided as a complement to, or in place of, the multipoint controller connections. In some situations, certain devices may receive only power or only communication. In other situations, all devices receive power and are able to communicate over the network. PoE can be provided via IEEE 802.3, such as Alternative A, Alternative B, the 4PPoE standards, or essentially any other PoE-type protocol. Through this 3702 network interface, network connections can be provided to various local devices, for example, several devices located around a room. For example, several κηζοηη / ζζηζ / Ε / γίΛΐ can be installed. 116 different air treatment and visible lighting units 3706, as well as surface treatment modules 3712, can be installed in a room and connected via PoE, making each module an independent, individually addressable Internet of Things device. Controls in room 3704 can be programmed to control certain designated devices simultaneously or to control one or more devices individually. The intelligent building management system can also communicate with the system and issue commands to the various devices over the network, as well as receive disinfection reports and other available information from the surface treatment devices 3712, combination units 3706, sensors, controls, or any other equipment connected to the PoE network interface 3702. The network interface can be connected to various sensors, such as a 3708 people counting sensor that can count the number of people in its vicinity. The tracking information can be transmitted via the network interface to a cloud server. This data can then be used to improve disinfection and recovery strategies in case of disruptions to the disinfection cycle. In one configuration, the 3600 energy management system can be incorporated into a cabin (for example, κηζοηη / ζζηζ / Ε / γίΛΐ 117 a telephone booth) to provide one or more remote services, such as health services (sometimes called a telehealth or telemedicine booth). An example of such a booth is shown in Figure 42 and is generally designated as 760. The 760 booth may include one or more aspects of the modalities described in this document, including an air treatment system. The 760 booth may include an integrated air treatment system and a UV surface disinfection system. The air treatment system may take in internal air, recirculate a portion back to the 760 booth, and discharge a portion from the 760 booth through an outlet to cool the 760 booth. The treated exhaust air for booths and private spaces may be configured with a return air vent (air returning to the booth) and may include an exhaust vent (treated air returning to the outside environment).This allows a portion of the air to be treated internally and a portion to be treated and expelled from the cabin, contributing to the cooling of the cabin. IX. Converter System A lighting accessory according to one embodiment of the present invention is shown in Figure 38 and is generally designated as 1100. The lighting accessory 1100 may include one or more aspects of the κηζοηη / ζζηζ / Ε / γίΛΐ 118 modes described in this document, including one or more aspects of lighting fixture 100. Likewise, lighting fixture 100 may include any aspect of lighting fixture 1100. It should be noted that one or more aspects of lighting fixture 1100 may be absent to produce one or more alternative modes. The lighting fixture 1100 may be similar in some respects to the lighting fixture 100 described herein, with several exceptions. For example, the lighting fixture 1100 may include a support member 1150, similar to the support member 150, which can be operated to facilitate mounting the lighting fixture 1100 to a surface. The surface may be the exposed surface of an interior room wall or an interior wall surface, such as a wall stud, that is concealed from view. The lighting fixture 1100 may include a control system 1190, similar to the control system 200, operable to direct the operation of the lighting fixture 1100 as described herein. The control system 200 may receive power from a power source and direct that power to components of the lighting fixture 1100 (for example, a UV light source 1160 and a fan 1140). In one configuration, the 1100 lighting accessory can be controlled by a switch (not shown), κηζοηη / ζζηζ / Ε / γίΛΐ 119 similar to switch 154 of lighting fixture 100, and which can be remotely operated from lighting fixture 1100. The switch can operate to control the power supply to a subset of components of lamp 1100. The circuits and components of lighting fixture 100 can remain active or inactive regardless of the state of the switch. The lighting fixture 1100 may include a treatment chamber 1110, similar to the treatment chamber 110, through which air can be directed and in which the air can be treated with UV light from a UV light source 1160. The UV light source 1160 may be a germicidal light source operable to generate UV light in response to power supplied from the energy source. For example, the UV light source 1160 may be a UV-C source, such as a cold cathode lamp, a low-pressure mercury lamp, or UV-C light-emitting diodes. The UV 1160 light source can be powered similarly to the UV 160 light source. For example, the energy applied to the UV 160 light source can be a conditioned form of energy from a power source. In the illustrated embodiment, untreated air 1152 can enter the treatment chamber 1110 through an air inlet 1112, and treated air 1154 can exit from κηζοηη / ζζηζ / E / γίΛΐ 120 the treatment chamber 1110 through an air outlet 1114. The air inlet 1112 can be in fluid communication with a filter assembly 1116, which can be configured to filter particles from the untreated air 1152 before it is treated with UV light in the treatment chamber 1110. Removal and replacement of the filter assembly 1116 can be carried out periodically to avoid substantial obstruction of the filter assembly 1116. As discussed in this document, the treated air 1154 can exit the treatment chamber 1110 through an air outlet 1114. The air outlet 1114 can include a vent 1118 configured to allow airflow through it at a flow rate sufficiently higher than the flow rate of the treated air 1154. The lighting fixture 1100 may include a fan assembly 1140 that functions to direct air through the treatment chamber 1110 from the air inlet 1112 to the air outlet 1114. In the illustrated embodiment, the fan assembly 1140 is arranged near the air inlet 1112; however, it should be understood that the present invention is not so limited. The fan assembly 1140 may be arranged or provided in a different position to direct air through the treatment chamber 1110. Fan 1140 may include a fan that can operate to direct air through the treatment chamber 1110 at a target flow rate for air disinfection or decontamination by applying UV light within the treatment chamber 1110. Fan assembly 1140 may include one or more operable fans to direct air through the treatment chamber 1110. Untreated air 1152, air inlet 1112, filter assembly 1116, fan 1140, air outlet 1114, vent 1118 and treated air 1154 may be similar respectively to untreated air 52, air inlet 112, filter assembly 116, fan 140, air outlet 114, vent 118 and treated air 154. In the illustrated embodiment, the lighting fixture 1100 is shown without deflectors; however, it should be understood that the lighting fixture 1100 may include deflectors, such as the deflector assemblies 130A, 130B described herein in conjunction with the lighting fixture 100. The 1100 lighting fixture in one configuration may include a visible light module 1180 operable to supply visible light to a room area of ​​50. The visible light module 1180 may operate 122 to convert the UV light from the UV light source 1160 into visible light and to facilitate the direction of that light to room area 50. The visible light module 1180 can include a UV light converter 1184 operable to receive UV light from the UV light source 160. The UV light converter 1184 can be configured to provide visible light based on the UV light received from the UV light source 160. This visible light can be used to illuminate the room area. In the illustrated embodiment, UV light converter 1184 is a UV downconverter operable for converting UV light into visible light. UV light converter 1184 may include a substrate 1184 (e.g., glass) on which a film 1186 is disposed, wherein the film 1186 can be operated to convert UV light into visible light. The film 1186 can be a downconverting layer, and the substrate 1184 can be a light transmitter. The film 1186 can be positioned upstream of the substrate 1184 relative to the UV light source 1160 so that the UV light from the UV light source 1160 can be converted into visible light before traveling through the substrate 1184 and into room area 50. The UV light converter 1184 can be constructed in several ways, including downconversion of κηζοηη / ζζηζ / Ε / γίΛΐ 123 nanophosphors, which can be formed from SiO2 co-doped with Ce and Tb, or nanocrystals with different band gaps to provide downconversion. These structures can be provided on or form the film 1186 to allow downconversion of the UV light output from the UV light source 1160 into visible light. The UV light converter 1184, depending on the configuration, can provide a passive converter or a passive conversion system to convert UV light into visible light. The lighting fixture 1100 can be used without energy either 1) to convert UV light or 2) to generate visible light independently of the UV light source 1160, or both. The UV light converter 1184 can be configured in a variety of ways, depending on the application. In one mode, the UV light converter 1184 can be configured to customize the lighting fixture 1100 without substantially modifying the fixture. For example, the UV light converter 1184 can be configured for a target color temperature, based on user selection or parameters. The UV light converter 1184 can be configured for such a target color temperature without affecting the overall construction of the lighting fixture 1100, allowing the fixture to be manufactured for applications regardless of the target color temperature. As κηζοηη / ζζηζ / E / γίΛΐ For example, the UV light converter 1184 is replaceable with another UV light converter 1184 capable of providing visible light having a second color temperature different from the first color temperature of the visible light coming out of the UV light converter 1184. One or more of the alternative parameters may be affected by the UV light converter 1184, allowing the lighting fixture 1100 to be manufactured for applications regardless of the additional or alternative parameters. The UV light converter 1184, in one mode, can be replaced in the field after the lighting fixture 1100 has been installed to vary one or more features of the lighting fixture 1100. In one embodiment, the lighting accessory 1100 may include a visible light regulator, similar to the UV light regulator 120 described herein, except that it functions to control the visible light emission in the room. The visible light regulator may function to selectively control the visible light emission in room area 50 according to control system directive 1190. As an example, the visible light regulator may include one or more apertures that selectively transmit light with respect to the visible light output of the UV light converter. 1184. 125 In an alternative embodiment, the UV light converter 1184 can be an upconverter configured to convert visible light into UV light. In one embodiment, the lighting fixture 1100 can include a visible light source (for example, such as the visible light source 180) capable of generating visible light to illuminate room area 50. The visible light from the visible light source can be directed to the UV light converter 1184 and to the treatment chamber 1110. The UV light converter 1184 can convert the visible light into UV light to disinfect the air flowing through the treatment chamber 1110. Example configurations of an upconversion setup can include lanthanide-doped upconversion phosphors (UPPs), such as lanthanide-doped nanoluminescent microcrystalline Y₂SiO₅. X. Filter disposal system A filter assembly according to a modality is shown in Figures 39 to 41 and generally designated as 2112. The filter assembly 2112 can be configured for use with a light assembly 2100, which can be similar to any lighting fixture or light configuration described in this document. The light assembly 2100 can include a filter holder 2102 having a receiver 2106 configured to maintain a position 126 of the filter assembly 2112 in place with respect to a treatment chamber 2108 and air passes through the filter assembly 2112 into or out of the treatment chamber 2108. The filter assembly 2112 in the illustrated embodiment includes a filter storage element 2130 (for example, a disposable bag) that can be moved from a stored position to a filter disposal position to facilitate the removal of the filter assembly 2112 in a manner that allows the user to substantially avoid contact with a filter medium 2120 of the filter assembly 2112. The filter assembly 2112 may include a filter medium 2120, as described herein, capable of removing particles from the air flowing into or out of a UV treatment chamber 2108 of a light assembly 2100. The filter medium 2120, in one embodiment, may be a MERV6-type filter medium capable of removing particles. The filter medium 2120 may be flexible enough to allow deformation for the installation of the filter assembly 2112 in a receiver 2106 of the light assembly 2100, while remaining rigid enough to form an interference fit with the receiver 2106 to facilitate maintaining a specific position of the filter assembly 2112 in the receiver 2106 of the assembly. 127 of light 2100. In an alternative embodiment, the receiver 2106 may be defined by a first and second support receiving the filter assembly 2112 by sliding the filter assembly 2112 in the receiver 2106 along a longitudinal axis of the filter assembly 2112, wherein the upper and lower portions of the filter assembly 2112 slide along the receiver 2106 until the filter assembly 2112 is disposed in a position for filtering particles, and wherein the receiver 2106 in this arrangement substantially impedes the movement of the filter assembly 2112 along a direction aligned with the direction of airflow (e.g., normal to a main face of the filter assembly 2112). In the illustrated embodiment, the filter assembly 2112 includes at least one filter holder 2112A-B (e.g., first and second filter holders 2112A, 2112B) disposed respectively on one or more sides of the filter medium 2120. The first and second filter holders 2112A-B may be made of cardboard bonded to the filter medium 2120 (with or without adhesive) to maintain the shape of the filter medium 2120 and one or more axes, such as the longitudinal or transverse axis of the filter medium 2120. The first and second holders 2112A-B may be deflected during installation of the filter assembly 2112 in the receiver 2106 of the light assembly 2100. The first and second holders 2112A-B may define κηζοηη / ζζηζ / Ε / γίΛΐ 128 sliders on which a filter bag 2136 can slide when the filter bag 2136 moves from a stowed position to a discarded position, as described in this document. As an example, at least one filter support 2112A-B may be a cardboard frame disposed around at least a portion of the perimeter of the filter medium 2120 (e.g., a portion or the entire parameter). The cardboard frame may substantially maintain a shape of the filter assembly 2112 so that it is consistent with the shape of the receiver 2106 of the light assembly 2100. In addition, or alternatively, the light assembly 2100 may include a support grid (e.g., a metal screen) disposed on at least one face of the filter medium 2120 that is perpendicular to a direction of airflow through the filter medium 2120. Optionally, the light assembly 2100 may include at least one lip 2104A-B configured to facilitate maintaining a position of the filter assembly 2112 in the receiver 2106 of the light assembly 2100. The at least one lip 2104A-B may allow the position of the filter assembly 2112 to be maintained with or without the interference adjustment described herein, in conjunction with the receiver 2106 and the filter assembly 2112. For example, the at least one lip 2104A-B may maintain the filter assembly 2112 in its position. 129 place with respect to receiver 2106 without depending on an interference setting and without the presence of an interference setting between filter assembly 2112 and receiver 2106. The filter assembly 2112 in the illustrated configuration includes a filter storage element 2130 that is an integral part of the filter assembly 2112. The filter assembly 2112 can be installed for use with the light assembly 2100 and with the filter storage element 2130 in the position shown in the configuration illustrated in Figure 39. The filter storage element 2130 includes a discard interface 2132 (for example, a pull tab) that can be pulled by a user to move the filter storage element 2130 from the stored position to a discard position as shown in the configuration illustrated in Figure 36. The transition between the stored and discard positions can be performed with the filter assembly 2112 in place or in position relative to the receiver 2106.As a result, a user can change filter assembly 2112 to a waste configuration before removing filter assembly 2112 from light assembly 2100, allowing the user to set filter assembly 2112 to a waste mode and remove filter assembly 2112 without touching filter medium 2136 and / or without disturbing κηζοηη / ζζηζ / E / γίΛΐ. 130 substantially the filter medium 2136 in an uncontained arrangement during disposal of the filter assembly 2112. In this way, the particles captured by the filter medium 2136 can be substantially kept within the storage element of the filter 2130 during removal of the filter assembly 2112 from the light assembly 2100. The filter storage element 2130, in the illustrated embodiment, includes a filter bag 2136 secured to a side portion 2122 of the filter medium 2120 and disposed in a stowed position, as shown in the illustrated embodiment of Figures 39 and 41. The filter bag 2136 can be expanded from the stowed position to the discarded position depicted in the illustrated embodiment of Figure 40. The user can grasp the discard interface 2132 to expand the filter bag 2136 around the filter medium 2120 to substantially contain the filter medium 2120 within the filter bag 2136. As explained herein, the expansion of the filter bag 2136 around the filter medium 2120 can be accomplished by pulling the discard interface 2132 while the filter assembly 2112 is in place relative to the receiver 2106 of the 2100 light assembly. In the illustrated embodiment, the filter storage element 2130 includes a waste support element 2134 that can be attached to the filter bag 2136 and κηζοηη / ζζηζ / E / γίΛΐ 131 be configured to substantially protect the filter bag 2136 in the stowed position. For example, the waste support element 2134, with the filter storage element 2130 in the stowed position, can substantially protect the filter bag 2136 from view when the filter assembly 2112 is disposed inside the receiver 2106. In the illustrated embodiment, the discard interface 2132 can also facilitate the removal of the filter assembly 2112 from the receiver 2106 of the light assembly 2100. For example, a user can grasp the discard interface 2130 to transition the filter bag 2136 to a discard position and pull further on the discard interface 2130 to remove the filter assembly 2112 from the receiver 2106. In one embodiment, as described herein, the receiver 2106 may include a lip 2104A-B (which can function as a latch) that can be overcome by the user pulling the discard interface 2130 in a direction parallel to the airflow, so that the filter assembly 2112 is able to deform sufficiently to overcome the lip 2104A-B to remove the filter assembly 2112. of the 2106 receptor. The negative air pressure with UVA in the room's performance over time and alarms can be determined by a system in accordance with κηζοηη / ζζηζ / E / γίΛΐ 132. One modality. By tracking positive air pressure changes, negative air pressure changes, or both, the system can identify potentially contaminated airflow inlets and outlets. For example, if a room is maintained at negative air pressure, theoretically, the room will not contaminate other rooms. However, large movements from that room to the outside can create momentary events where air from that room moves outward. Several people leaving the room with the door open act as a column of air leaving that room. Such events can be tracked and monitored based on pressure changes to determine a risk level and identify opportunities to treat adjacent areas.Since people are often the source of contamination, tracking sensor information to understand movement and airflow can allow the system to determine a large part of the contamination transfer. Directional terms, such as vertical, horizontal, superior, inferior, higher, lower, interior, inward, exterior, and outward, are used to help describe the invention based on the orientation of the embodiments shown in the illustrations. The use of directional terms should not 133 cannot be interpreted as limiting the invention to any specific orientation. The foregoing description is of the current embodiments of the invention. Various alterations and changes may be made without departing from the spirit and broader aspects of the invention as defined in the appended claims, which are to be interpreted in accordance with the principles of patent law, including the doctrine of equivalents. This description is provided for illustrative purposes and should not be construed as an exhaustive description of all embodiments of the invention, nor as limiting the scope of the claims to the specific elements illustrated or described in connection with these embodiments. For example, and without limitation, any individual element of the described invention may be replaced by alternative elements that provide substantially similar functionality or suitable operation.This includes, for example, currently known alternative elements, such as those that a subject matter expert might currently know, and alternative elements that may be developed in the future, such as those that a subject matter expert might, upon their development, recognize as an alternative. Furthermore, the described modalities include a plurality of features that are described collectively and that could be... 134 cooperatively provide a collection of benefits. The present invention is not limited only to those embodiments that include all of these features or that provide all of the stated benefits, except to the extent expressly stated otherwise in the issued claims. Any reference to the elements of a claim in the singular, for example, using the articles a, an, the, or the, should not be construed as limiting the element to the singular. It is hereby stated that, as of this date, the best method known to the applicant for putting the present invention into practice is the one that is clear from the present invention.

Claims

1. An accessory for disinfecting the air within a room, characterized in that it comprises: an operable support member for facilitating the mounting of the accessory on a surface; an operable germicidal light source for generating UV light; a UV treatment chamber having an untreated air inlet and a treated air outlet, wherein the UV treatment chamber has an operable air treatment region for receiving air from the untreated air inlet and for directing air to the treated air outlet, wherein the UV light from the germicidal light source is directed to the air treatment region; a plurality of baffles working in cooperation to substantially prevent the leakage of UV light from the ultraviolet treatment chamber into the room through the untreated air inlet; and an operable visible light source for generating visible light to illuminate the room.

2. The accessory according to claim 1, characterized in that the plurality of κηζοηη / ζζηζ / E / γίΛΐ 136 deflectors is provided within the UV treatment chamber.

3. The accessory according to claim 1, characterized in that it comprises a UV light regulator in light communication with the germicidal light source, the UV light regulator being operable to selectively control an amount of UV light directed into the room from the germicidal light source.

4. The accessory according to claim 3, characterized in that the UV light regulator includes a stationary window that transmits UV light, wherein the UV light regulator includes a sliding window surrounded by an opaque structure, wherein the sliding window is capable of moving relative to the stationary window to selectively control the size of an effective opening available for the transmission of UV light to the room from the germicidal light source.

5. The accessory according to claim 3, characterized in that the UV light regulator can be operated to obtain occupancy information relating to the occupants present in the room, wherein the UV light regulator can be operated to selectively provide UV light to the room depending on whether the occupancy information indicates that there are no occupants present in the room. κηζοηη / ζζηζ / E / γίΛΐ 137 6. The accessory according to claim 1, characterized in that it comprises an operable control system for controlling the operation of the germicidal light source, wherein the control system includes a wireless communication controller configured to transmit information and receive information from an external network accessory.

7. The accessory according to claim 1, characterized in that it comprises a first reflector configured to direct UV light from the germicidal light source to a target surface in the room within a UV light region, wherein the UV light region is defined by the target surface and an opposite boundary line that is parallel to or converges with the target surface.

8. The accessory according to claim 1, characterized in that it comprises a fan that operates to direct air through the UV treatment chamber of the accessory, the fan operating to direct air to the UV treatment chamber from the air inlet and operating to direct air from the treatment chamber to the air outlet; and a controller configured to control the speed of the fan.

9. The accessory according to claim 8 of κηζοηη / ζζηζ / E / γίΛΐ 138, characterized in that the controller is configured to carry out monitoring of pressure changes in the room based on the operating conditions of the fan.

10. The accessory according to claim 1, characterized in that it comprises a controller and an audio sensor, wherein the controller is configured to receive audio sensor output from the audio sensor and recognize an occupancy event based on the audio sensor output.

11. An accessory for disinfecting a target surface within a room, characterized in that it comprises: an operable support member for facilitating the mounting of the accessory on a surface; an operable germicidal light source for generating UV light; and a first reflector configured to direct the UV light within a UV light region to the target surface, wherein the UV light region is defined by the target surface and an opposite boundary line that is parallel to or converges with the target surface.

12. The accessory according to claim 11, characterized in that the opposite boundary line converges with the target surface at a point distal to the accessory.

13. The accessory according to claim 11, characterized in that the opposite boundary line intersects with a light opening of the accessory at an intersection point.

14. The accessory according to claim 13, characterized in that a distance between the intersection point and the target surface defines that the UV light region is outside a region of space occupied by a person's head while standing inside the room.

15. The accessory according to claim 11, characterized in that it comprises: an air inlet; an air discharge opening; and a fan operable to direct air through a treatment chamber of the accessory, the fan operable to direct air to the treatment chamber from the air inlet and operable to direct air from the treatment chamber to the air discharge opening; and a controller configured to control the speed of the fan.

16. The disinfection system according to claim 15, characterized in that it comprises a sensor circuit and a controller configured to control the fan speed based on the output of the sensor circuit.

17. The accessory according to claim 15, characterized in that the UV light from the germicidal light source is directed to the treatment chamber.

18. The accessory according to claim 15, characterized in that it comprises a second reflector configured to direct UV light towards the first reflector, wherein the germicidal light source is positioned to direct the light towards a region within the treatment chamber and the second reflector.

19. The accessory according to claim 15, characterized in that the controller is configured to monitor changes in room pressure based on the operating conditions of the fan.

20. The accessory according to claim 15, characterized in that it comprises an audio sensor, wherein the controller receives audio sensor output from the audio sensor and wherein the controller is configured to recognize an occupancy event based on the audio sensor output.

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