Abstract: Multiple collimated laser beams can be arranged in a tightly packed non-overlapping array the goes through a telescope system to reduce the size of the beams and also the separation between the beam centers. The beams in the resulting smaller array then diverge until they reach a nonlinear lens, which collimates each of the beams individually so that all of the beams are collimated, pointing in the same direction and overlapping. The pulses in the beams are temporally separated from each other such that the nonlinear lens acts as a different lens for each of the beams. Such an arrangement facilitates scaling the far field average intensity by combining multiple temporally interleaved pulsed laser beams, allowing diverging pulsed laser beams to be collimated individually by utilizing the large nonlinear refractive index of certain materials.

Abstract: A method for repairing a membrane filtration module in fluid communication with a plurality of additional membrane filtration modules includes fluidly connecting a fluid transfer assembly to the membrane filtration module, fluidly isolating the membrane filtration module from the plurality of additional membrane filtration modules, forcing liquid within the membrane filtration module into the fluid transfer assembly by introducing a pressurized gas into the membrane filtration module, releasing the pressurized gas from the membrane filtration module, fluidly disconnecting the fluid transfer assembly from the membrane filtration module, repairing one or more damaged membranes in the membrane filtration module, and fluidly reconnecting the membrane filtration module to the plurality of additional membrane filtration modules.

Abstract: Provided is an improved filtration module assembly comprising a vessel having a filtration cartridge disposed within it and a header coupled to an end of the vessel, the header including a housing having an open-ended upper end and a lower end, and an end cap including a portion that mates with a complimentary structure defined by the inner all of the open ended upper end of the housing to removable engage with the housing and the end cap may further define a passageway for fluid to flow out of the vessel. The filtration module assembly may enable an improved manifold arrangement used to communicate fluids to and from a filtration system comprising a plurality of such modules and the configurations of the present invention may facilitate improved operation of such filtration systems.

Abstract: A photonic integrated circuit (PIC) with embedded optical temperature sensing includes an optical interferometer containing a first arm and a second arm, and one or more optical waveguide sections configured to measure an internal temperature of the PIC. The one or more optical waveguide sections are implemented as one or more sections of the first arm and the second arm. The first arm and the second arm have a first optical path length (OPL) and a second OPL and are made of a first material and a second material, respectively.

Abstract: A heads-up display comprises a housing, a pressure sealed optical element disposed at a front end of the housing, and a dive computer disposed within the housing. The dive computer includes a display panel. There is a lens disposed in the housing between the infrared cut-off filter and the display panel.

Abstract: An apparatus includes a photonic integrated circuit (PIC) to measure an optical wavelength of a light source. The PIC includes an optical splitter, a plurality of tunable interferometers and one or more detectors. The optical splitter is coupled to the light source, and the interferometers are coupled to the optical splitter. Each interferometer receives a portion of an optical signal of the light source. One or more detectors are coupled to each interferometer, and the interferometers have different free spectral ranges (FSRs). A largest FSR value of the different FSRs is greater than an entire intended wavelength measurement range of the PIC.

Abstract: A heads-up display comprises a housing, a pressure sealed optical element disposed at a front end of the housing, and a dive computer disposed within the housing. The dive computer includes a display panel. There is a lens disposed in the housing between the infrared cut-off filter and the display panel.

Abstract: An aeration device configured to be fitted to a membrane filtration module having membranes mounted therein. The aeration device comprises a sleeve configured to at least partially surround the membrane filtration module. The sleeve has one end adapted to engage with the membrane filtration module and another end adapted to engage with a filtrate collection conduit or manifold.

Abstract: A method for repairing a membrane filtration module in fluid communication with a plurality of additional membrane filtration modules includes fluidly connecting a fluid transfer assembly to the membrane filtration module, fluidly isolating the membrane filtration module from the plurality of additional membrane filtration modules, forcing liquid within the membrane filtration module into the fluid transfer assembly by introducing a pressurized gas into the membrane filtration module, releasing the pressurized gas from the membrane filtration module, fluidly disconnecting the fluid transfer assembly from the membrane filtration module, repairing one or more damaged membranes in the membrane filtration module, and fluidly reconnecting the membrane filtration module to the plurality of additional membrane filtration modules.

Abstract: Provided is an improved filtration module assembly comprising a vessel having a filtration cartridge disposed within it and a header coupled to an end of the vessel, the header including a housing having an open-ended upper end and a lower end, and an end cap including a portion that mates with a complimentary structure defined by the inner all of the open ended upper end of the housing to removable engage with the housing and the end cap may further define a passageway for fluid to flow out of the vessel. The filtration module assembly may enable an improved manifold arrangement used to communicate fluids to and from a filtration system comprising a plurality of such modules and the configurations of the present invention may facilitate improved operation of such filtration systems.

Abstract: Heat transfer between a fluid-bearing flexible tube and a heat-conducting surface is improved by fixing a flexible heat-conducting sheath to the flexible tube and by compressive fixing that distorts the tube and deforms the sheath and/or the surface. The tube can be made of cross-linked polythene (PEX). The sheath can be spirally wound high-purity aluminum wire. The sheath enables efficient heat transfer between the outer surface of the tube and the heat-conducting surface. Applications include radiant heating and cooling. Tube layout can be customized and variable tube spacing is possible, for example by using a castellated layer to support the tube.

Abstract: In a first membrane filtration module comprises a membrane module comprising a plurality of permeable hollow membranes; a fluid distribution device adapted to removably surround at least a portion of the membranes of the membrane module, the fluid distribution device comprising a plurality of through-hole openings for distributing a fluid, and the fluid distribution device adapted to distribute a flow of fluid along a surface of the permeable hollow membranes. In a second membrane filtration device comprises a membrane module comprising a plurality of permeable hollow membranes, each of the permeable hollow membranes having a surface; and a gas distribution device: adapted to distribute gas bubbles to the surface of the permeable hollow membrane, adapted to removably surround at least a portion of the plurality of permeable hollow membranes, and defining a plurality of through openings for distributing the gas bubbles to the membranes.

Abstract: A method for repairing a membrane filtration module in fluid communication with a plurality of additional membrane filtration modules includes fluidly connecting a fluid transfer assembly to the membrane filtration module, fluidly isolating the membrane filtration module from the plurality of additional membrane filtration modules, forcing liquid within the membrane filtration module into the fluid transfer assembly by introducing a pressurized gas into the membrane filtration module, releasing the pressurized gas from the membrane filtration module, fluidly disconnecting the fluid transfer assembly from the membrane filtration module, repairing one or more damaged membranes in the membrane filtration module, and fluidly reconnecting the membrane filtration module to the plurality of additional membrane filtration modules.

Abstract: A wave energy converter can be dynamically tuned to achieve resonance with ocean swell by varying the geometry of an attached submerged water-filled vessel (41).

Abstract: An apparatus includes a source configured to generate a beam of electromagnetic radiation propagating in a first direction and a spatial filter. The spatial filter is configured to restrict the beam of electromagnetic radiation in one or more dimensions and includes at least one set of rods including a first rod and a second rod. The first rod is a first cylindrical structure with a first axis in a first plane and the second rod is a second cylindrical structure with a second axis in a second plane parallel to the first plane. The first axis and the second axis are longitudinal axes, and the first and the second rods have shaped surfaces in portions of their respective surfaces facing one another.

Abstract: Provided is an improved filtration module assembly comprising a vessel having a filtration cartridge disposed within it and a header coupled to an end of the vessel, the header including a housing having an open-ended upper end and a lower end, and an end cap including a portion that mates with a complimentary structure defined by the inner all of the open ended upper end of the housing to removable engage with the housing and the end cap may further define a passageway for fluid to flow out of the vessel. The filtration module assembly may enable an improved manifold arrangement used to communicate fluids to and from a filtration system comprising a plurality of such modules and the configurations of the present invention may facilitate improved operation of such filtration systems.

Abstract: An aeration device configured to be fitted to a membrane filtration module having membranes mounted therein. The aeration device comprises a sleeve configured to at least partially surround the membrane filtration module. The sleeve has one end adapted to engage with the membrane filtration module and another end adapted to engage with a filtrate collection conduit or manifold.

Abstract: A wave energy converter comprises a submerged buoyant vessel (10) that can react directly with the seabed using neutrally buoyant taut tethers (19) at depths that characterize the continental shelf. The vessel (10) is held by a taut vertical mooring line (12) of controllable length and a taut vertical upper line (17) of controllable length connected to a surface float (15). These lines (12, 17) have elastic sections, allowing the vessel (10) to follow an orbital path in response to swell from any direction. By varying the length of these lines (12, 17) the submersion of the vessel (10) can be varied dynamically according to wave height. By varying the tension of these lines (12, 17) the natural oscillation period of the vessel (10) can be varied dynamically in response to the swell period.

Abstract: The efficiency of radiant space heating or cooling is improved and the use of renewable energy sources enabled by reducing the resistance of the thermal path through cladding used in the floor, walls or ceiling of a domestic or commercial living space. The resistance of the thermal path is reduced by constructing the cladding with an array of thermal bridges each comprising a thermal shunt connected to a heat-collecting layer and to a heat-dispersing layer. Such bridged cladding extends the range of choice of interior cladding and of configuration of radiant system.