Abstract: A light guide comprising a polymeric layer at least 25 percent transmissive over at least a 30 nm bandwidth in a wavelength range from 180 to 280 nm over a distance of at least 100 micrometers and visible light transparent reflecting layers (UV-C mirror) that are at least 50 percent reflective over at least 30 nm bandwidth in a wavelength range from 180 to 280 nm over an incident light angle of 0 to 90 degrees and that are at least 25 percent transmissive of visible light over at least 30 nm bandwidth in a wavelength range of 400 to 800 nm over an incident light angle of 0 to 90 degrees. The light guide is useful, for example, for antimicrobial surfaces.

Abstract: A light guide comprising a polymeric layer at least 25 percent transmissive over at least a 30 nm bandwidth in a wavelength range from 180 to 280 nm over a distance of at least 100 micrometers and visible light transparent reflecting layers (UV-C mirror) that are at least 50 percent reflective over at least 30 nm bandwidth in a wavelength range from 180 to 280 nm over an incident light angle of 0 to 90 degrees and that are at least 25 percent transmissive of visible light over at least 30 nm bandwidth in a wavelength range of 400 to 800 nm over an incident light angle of 0 to 90 degrees. The light guide is useful, for example, for antimicrobial surfaces.

Abstract: Multilayer optical film comprising at least a plurality of alternating first and second optical layers. Embodiments of the multilayer optical film are useful, for example, in UV-C shield, UV-C light collimator, and UV-C light concentrator applications.

Abstract: A UV treatment cartridge having an exterior housing and a UV treatment module located inside of the exterior housing. The UV treatment module having a UVLED array for UV treatment of a fluid passing through the UV treatment module. An internal annular space between the exterior sidewall and the module sidewall forms an entry flow path to the UV treatment module thereby substantially balancing fluid pressure acting on the inside of the module sidewall and acting on the outside of the module sidewall.

Abstract: Aspects of the present disclosure are directed toward methods, apparatuses and systems for operating at a fluid-maintenance site. In certain embodiments, the methods, apparatuses, and systems include a fluid filter, a sensor that provides parameters that characterize fluid flowing through the fluid filter, and a wireless interface circuit. The wireless interface circuit operates in a set-up mode and a normal-operation mode. In the set-up mode, the wireless interface circuit operates by communicating authentication data with a mobile data-processing device while the mobile data-processing device is proximate to the fluid-maintenance site. In the normal-operation mode, the wireless interface circuit operates by sending the parameters wirelessly, according to the authentication protocol, to a remotely-situated server via a wireless communication medium and a broadband connection.

Abstract: A UV treatment cartridge having an exterior housing and a UV treatment module located inside of the exterior housing. The UV treatment module having a UVLED array for UV treatment of a fluid passing through the UV treatment module. An internal annular space between the exterior sidewall and the module sidewall forms an entry flow path to the UV treatment module thereby substantially balancing fluid pressure acting on the inside of the module sidewall and acting on the outside of the module sidewall.

Abstract: Provided are media cartridges that have adjustable bypasses using linear movement, and systems and methods that use them. Aspects include an adjustable bypass filter cartridge where a treated stream and an adjusted non-treated stream combine prior to post-filtration and the percentage or ratio of treated the and the non-treated water is adjustable at the time of installation from the outside of the filter cartridge with a known or predictable level of bypass. Media cartridges comprise: an inlet in fluid communication with a feed chamber and an outlet in fluid communication with a mixing compartment; a media compartment containing a media; a bypass port in fluid communication with the feed chamber and the mixing compartment; and a bypass regulator that is adjustable by linear movement. Such cartridges maybe adjusted to meet the needs of a wide variety of end uses.

Abstract: Keyed fluid-handling devices comprise a fluid-handling device such as a filter, a bypass, or an adapter and an optical key. The optical keys are amenable to all types of filter component and can be readily retrofitted to existing designs. The optical keys may be formed from a variety of materials and combination of phases. That is, optical keys may comprise one or more solid materials, or perhaps may result from a combination of: solid materials, such as in transparent or semi-transparent polymers or glass; liquid fluids, such as water; and gaseous gaps such as an air gap. Optical keys may be light conduits or light guides. Filter manifolds comprise optical locks to ensure compatibility of the filter components.

Abstract: Aspects of the present disclosure are directed toward methods, apparatuses and systems for operating at a fluid-maintenance site. In certain embodiments, the methods, apparatuses, and systems include a fluid filter, a sensor that provides parameters that characterize fluid flowing through the fluid filter, and a wireless interface circuit. The wireless interface circuit operates in a set-up mode and a normal-operation mode. In the set-up mode, the wireless interface circuit operates by communicating authentication data with a mobile data-processing device while the mobile data-processing device is proximate to the fluid-maintenance site. In the normal-operation mode, the wireless interface circuit operates by sending the parameters wirelessly, according to the authentication protocol, to a remotely-situated server via a wireless communication medium and a broadband connection.

Abstract: Provided are media cartridges that have adjustable bypasses using linear movement, and systems and methods that use them. Aspects include an adjustable bypass filter cartridge where a treated stream and an adjusted non-treated stream combine prior to post-filtration and the percentage or ratio of treated the and the non-treated water is adjustable at the time of installation from the outside of the filter cartridge with a known or predictable level of bypass. Media cartridges comprise: an inlet in fluid communication with a feed chamber and an outlet in fluid communication with a mixing compartment; a media compartment containing a media; a bypass port in fluid communication with the feed chamber and the mixing compartment; and a bypass regulator that is adjustable by linear movement. Such cartridges maybe adjusted to meet the needs of a wide variety of end uses.

Abstract: An enclosure for an electronic device includes a base having an outwardly extending peripheral wall which forms a compartment for receiving the electronic device. A caseplate is mounted to the peripheral wall for enclosing the electronic device. The caseplate has an access opening extending completely through the caseplate and located at a switch on the electronic device. The access opening is covered by a thin membrane which protects the electronic device and yet permits actuation of the switch. The caseplate can be decorated by art work on by another layer of material or can be clear and cover the device and an optional art work insert.

Abstract: An enclosure for an electronic device includes a base having an outwardly extending peripheral wall which forms a compartment for receiving the electronic device. A caseplate is mounted to the peripheral wall for enclosing the electronic device. The caseplate has an access opening extending completely through the caseplate and located at a switch on the electronic device. The access opening is covered by a thin membrane which protects the electronic device and yet permits actuation of the switch. The caseplate can be decorated by art work on by another layer of material or can be clear and cover the device and an optional art work insert.

Abstract: An enclosure for an electronic device includes a base having an outwardly extending peripheral wall which forms a compartment for receiving the electronic device. A caseplate is mounted to the peripheral wall for enclosing the electronic device. The caseplate has an access opening extending completely through the caseplate and located at a switch on the electronic device. The access opening is covered by a thin membrane which protects the electronic device and yet permits actuation of the switch. The caseplate can be decorated by art work on by another layer of material or can be clear and cover the device and an optional art work insert.