Abstract: A tamper-resistant frictionless connector assembly includes an outer sleeve with a first end and a second end opposite to the first end along an axis. A first sealed ring bearing has first outer ring, inner ring, and bearings, where the first outer ring is directly coupled to the outer sleeve at the first end. An inlet adapter directly coupled to the first inner ring and not directly coupled to the outer sleeve. A second sealed ring bearing has a second outer ring, inner ring, and bearings, where the second outer ring is directly coupled to the outer sleeve at a second end. An outlet adapter directly coupled to the second inner ring and not directly coupled to the outer sleeve. A thrust axial bearing abutting the inlet and outlet adapters, where the sealed ring bearings, the inlet adapter, and the outlet adapter are aligned along the axis.

Abstract: A pipe element has a circumferential groove with a surface portion oriented at an angle with respect to its longitudinal axis. A surface portion of the groove adjacent to the angled surface portion is oriented perpendicular to the longitudinal axis. A mechanical coupling has projecting keys that engage the groove. The keys have mating surfaces that contact both the perpendicular and angled surface portions of the groove. When the pipe element and coupling are used in combination to form a pipe joint, axial load on the pipe, resisted by the mechanical coupling, is shared between the perpendicular and angled surface portions which results in a pipe joint that can withstand higher internal pressure than if the axial load were borne by the perpendicular surface portion alone.

Abstract: A clamp for use in joining conduit segments comprising a ring sector and a radially projecting channel sector having first and second straps, first and second compression members, a central compression member, and a fastener wherein upon tightening the fastener, axial forces along the fastener are transferred into clamping forces around the clamp in order to seal the conduit segments.

Abstract: A fluid line connection safeguard for axial connection of a socket-shaped end portion of a first fluid line part with an end portion of a second fluid line part formed as a spigot end includes an annular clamping body which has a through opening with an overall internal contour and at least two clamping body elements forming a clamping body, wherein a respective clamping body element has a circular segment-shaped internal contour and the circular segment-shaped internal contours of the at least two clamping body elements form the overall internal contour, and wherein the at least two clamping body elements are connected to one another by means of an adjusting connection in such a way that the overall internal contour is adjustable to at least two different diameters.

Abstract: A pipe coupling device includes: a joint body into which a joining pipe is inserted; a C-ring-shaped retaining ring that includes a flange part protruding from an outer peripheral surface thereof fixed onto an outer peripheral surface of the joining pipe; and a pressing plate having a recessed part for housing the flange part. The retaining ring further includes a second flange part protruding from the outer peripheral surface thereof. The pressing plate further includes a pair of through-holes through which the coupling members penetrate, and a second recessed part for housing the second flange part. The second flange parts are provided with a circumferential center portion of the ring body between them, and the pressing plates are provided with the circumferential center portion between them. The recessed part is located between the through-holes, and the second recessed part is located outward of the through-holes in the circumferential direction.

Abstract: A grip and fitting assembly for coupling an air hose to a gladhand coupler. The grip being flexible and tapered with a tubular interior through which may pass a length of hose shielded and protected by the grip. The grip is affixed to a fitting attachable to the gladhand coupler on a first threaded end thereof and attachable to the air hose on a second barbed end thereof. The grip is configured with one or more internal keyway boss which aligns and interlocks with one or more corresponding keyway recess on a retaining shoulder formed between the ends of the fitting. The secure, snap-fit attachment between the grip and fitting ensures ease of operation, installation, maintenance, along with increased durability, weather-resistance, efficiency, usability, and reliability of the coupling.

Abstract: The present invention relates to a tube connector assembly which may comprise a body provided with a through cavity extending in an axial direction, a ring adapted to be mounted at the periphery of a useful portion of the tube and provided, at one of its ends, with a support surface adapted to receive a curved end portion of the tube, a nut adapted to be screwed onto the body so as to compress the curved end portion of the tube against a receiving surface in the axial direction via said ring, and an annular receiving part forming the receiving surface and removably mounted on the body.

Abstract: A clamp for use in joining conduit segments comprising a ring sector and a radially projecting channel sector having first and second straps, first and second compression members, a central compression member, and a fastener wherein upon tightening the fastener, axial forces along the fastener are transferred into clamping forces around the clamp in order to seal the conduit segments.

Abstract: The invention relates to a quick coupling for the disconnectable connection of pipelines for a pressurized fluid, this coupling comprising a plug element and a socket element (100) intended to be coupled with one another, the socket element including a hollow cylindrical body (102) centered on a central axis (X100) and including an inner radial surface and an outer radial surface and defining a radial opening (104), and a locking element (118), comprising a translatable member (118a), along a radial translation axis relative to the central axis, inside the radial opening (104), which is able to guide the member (118a) between a first position, in which the member protrudes inward relative to the inner radial surface, and a second position, in which the member protrudes outward relative to the outer radial surface and in which the member (118a) does not protrude inward relative to the inner radial surface, the plug element comprises a locking ring that is axially movable between a locking position, in which it

Abstract: A bell end adapter arrangement facilitates assembly of conduit sections through which associated electrical wiring and/or cables are routed. The arrangement includes a bell end adapter assembly having an outer bell end adapter, and an inner sleeve portion fixed within the outer adapter. The adapter assembly particularly facilitates routing of wiring from a conduit section positioned within a concrete slab or like flooring element, with the adapter assembly configured to be inserted into the slab and joined to the conduit section disposed within the slab. The adapter assembly has a outwardly flared, bell-shaped open mouth which is configured to receive a second conduit section through which wiring form the first conduit section is routed.

Abstract: The invention relates to a heatable tube (1) for conducting fluid, gaseous and/or pasty media, comprising an outer wall (10) that encloses an inner volume (11), and a heating element (2) which is arranged inside the inner volume (11) and which includes at least one first heating conductor (20a) that is surrounded by a first heating conductor insulation (21) insulating the heating conductor from the inner volume (11). The invention is characterized in that the first heating conductor insulation (21) insulating the heating conductor from the inner volume (11) is surrounded by a second heating conductor insulation (22).

Abstract: Disclosed is an in-flow pulsation dampening system for high-pressure (e.g., 10K psi and higher) fluid lines. At high fluid flow pressures, the dampening system is a dual stage dampening system, responsive to low (e.g., when first charging the fluid line) and to very high-pressure pulsations. An external containment shell handles the full fluid flow pressures. One or more internal shells contain and handle the internal gas dampening system. The in-flow relationship of the gas dampening component assures that pressure differences between the internal gas handling system and the high-pressure fluid flow is always relatively small. This enables the gas handling components to be constructed of less robust material than the external shell (even though the gas system's internal pressure can equal that of the fluid flow), and be less susceptible to pressure failure.

Abstract: A fabric device for application on a degraded area of a member for rehabilitating the member. A fabric device in accordance with the present invention comprises at least one layer of composite fabric, which has a first surface and a second surface spaced-apart from the first surface, nanomaterial on at least one surface of the fabric, and a resin matrix on the fabric over the nanomaterial. The resin matrix may also comprise nanomaterial therein.

Abstract: A U-shaped component holder for mounting directly on the back of an electronic display, either wall-mounted, ceiling-mounted or free standing, and which does not require special mounting equipment. The component holder is positioned behind the display to maintain components, wires or cables out of sight of viewers of the display. The component holder may be mounted on a variety of VESA standard displays or non-standard display, and may be moved between displays easily and quickly.

Abstract: An anchoring system (10) comprising an anchor (12) and a pin member (14). The anchor (12) comprises a body (16) configured to be inserted in a support surface (18). The body (16) provides an elongate passage ((22) configured to receive and support the pin member (14). The elongate passage (22) provides an open end (30) providing an opening (32). The opening (32) is provided for receiving an end (34) of the pin member (14) therethrough. The anchor (12) and pin member (14) provide a fastening arrangement (36) for fastening the pin member (14) within the passage (22), when the pin member (14) is inserted through the opening (32) into position within the passage (22).

Abstract: A mounting assembly for mounting an antenna to a support structure includes an attachment bracket coupled to a support structure. The mounting assembly includes a support member coupled to the attachment bracket and extending along a support member axis. The support member has a body defining a substantially hollow interior that extends substantially co-axially along the support member axis. A support arm supports an antenna. The support arm is received within the substantially hollow interior of the support member. The support arm is in a locked position or an unlocked position relative to the support member. In the locked position, the support arm is fixed with respect to the support member. In the unlocked position, the support arm is movable with respect to the support member along the support member axis.

Abstract: The present disclosure is directed to a cover for containing leakage of a grease gun. The cover include a body which has an open end, a closed end, and a sidewall extending between the open end and the closed end. The sidewall has an outer peripheral surface and an inner peripheral surface which encompasses an inner space for receiving a leaking lubricant.

Abstract: Pressure vessel (1) with a gas-impermeable liner (2) and a reinforcing layer (4) in composite material formed externally around the impermeable liner (2), as well as at least one boss (5) coupled to the impermeable liner (2) and to the reinforcing layer (4), wherein between the impermeable liner (2) and the boss (5) a polymeric sealing mass (7) is arranged bound to both the impermeable liner (2) and to the boss (5) by means of in situ cross-linking of the sealing mass (7).

Abstract: A system for obtaining helium that avoids boil off losses from the system. A combination of heat exchangers and a compressor are used to deliver helium at a temperature of 30° K and a pressure between 300 bar and 700 bar without significant boil off losses.

Abstract: A lighting apparatus according to an embodiment includes a globe, an optical element including a scattering portion inside and transparent to visible light, and a light source disposed to be opposed to a light incident surface of the optical element. The scattering portion is disposed inside the globe.

Abstract: A bulb-type light source apparatus includes a light source and a light guide member. The light source is provided annularly. The light guide member includes an outer surface, a light-incident end surface opposing the light source, and an optical pattern portion configured to emit, from the outer surface, light that enters from the light-incident end surface.

Abstract: The invention provides a lighting device (100) comprising an elongate housing (110) having a light exit window (112), a carrier assembly (120) within the housing comprising a plurality of SSL elements (122) and a reflector (130) between the housing and the carrier assembly. The reflector (130) has a plurality of apertures (132) therein. The apertures are between the housing and the carrier assembly. An adhesive (140) affixes the reflector to the housing and the adhesive extends through the apertures and affixes the carrier assembly to the housing. Such a lighting device may be assembled in a particularly cost-effective manner. There is also provided a method of assembling the lighting device and a luminaire comprising the lighting device.

Abstract: The invention relates to a base (3, 4, 22) for a lamp tube (1), comprising a securing part (3, 4) for stationarily securing to a front side of the lamp tube (1), and a connection part (22) having at least one electrical contact element (26) for electrically contacting a lamp holder, which connection part (22) can be twisted against the securing part (3, 4), wherein the securing part (3, 4) and the connection part (22) are electrically connected to one another by means of at least one sliding contact (4, 28). A tubular lamp (L) having a lamp tube (1) comprises a base (3, 4, 22) on at least one open end of the lamp tube (1). A method serves to assemble a base (3, 4) on a lamp, tube (1) of the tubular lamp (L). In particular, the invention is suitable for use on retrofit LED lamps as a substitute for fluorescent lamps, in particular T-type lamps, in particular T8-type lamps.

Abstract: An LED tube lamp includes a glass tube, a plurality of LED light sources, two end caps respectively sleeving two end portions of the glass tube, a power supply in one of the end caps or separately in both of the end caps, and an LED light strip in the glass tube. The plurality of LED light sources is on the LED light strip. Each of the end caps comprises a plurality of openings formed thereon. The plurality of openings dissipating heat resulted from the power supply are divided into two sets. The two sets of the plurality of openings are symmetric to each other with respect to a virtual central axis of the end cap.

Abstract: A light source that is adapted to replace existing fluorescent tubes in an existing fluorescent light fixture is disclosed. The light source includes a plurality of LEDs mounted on a heat-dissipating structure, first and second plug adapters that mate with the florescent tube connectors of the fluorescent tube the light source is to replace, and a power adapter that converts power from a fluorescent tube ballast presented on the first and second plug adapters to DC power that powers the LEDs. The light source is powered from the output of the existing fluorescent ballast. The light source can utilize the existing metallic enclosure as a heat-radiating surface and/or direct air heat transfer from the surface of the heat-dissipating structure.

Abstract: The present invention provides a method for producing high-quality light, wherein this high-quality light producing method consists of a plurality of particularly-designed process steps based on the sensitivity of human eyes and the melatonin suppression. So that, research and development engineers of lighting devices are able to manufacture a high-quality lighting unit or module through this novel method. Moreover, a variety of experimental data have proved that, the high-quality lighting unit produced by using this novel method is able to perform the advantages of high SRI (Spectrum Resemblance Index) and low MLT (Melatonin) suppression rate.

Abstract: The invention provides a method for the production of a luminescent material, (10) based on coated quantum dots (100), comprising: (i) providing luminescent quantum dots (100) in a liquid medium (20) wherein the luminescent quantum dots (100) have an outer layer (105) comprising first cations and first anions; and (ii) providing in a coating process a coating (120) on the outer layer (105) of the quantum dots (100) in the liquid medium (20), wherein the coating (120) comprises a silica coating; wherein during the coating process, or after the coating process, or during and after the coating process, the liquid medium (20) comprises one or more of a third element and a fourth element, wherein the first cation and the third element belong to the same group of the periodic system, and wherein the first anion and the fourth element belong to the same group of the periodic system.

Abstract: An illuminating device includes a pump radiation source for emitting pump radiation as a beam bundle, a phosphor element for converting the pump radiation into conversion light, and a lens system between the pump radiation source and the phosphor element, which is penetrated by the pump beam bundle, wherein the lens system has a focus and the phosphor element is arranged at the focus, and wherein furthermore a lens of the lens system has a scattering means which scattering means the pump beam bundle penetrates and is widened at the same time, so that the pump beam bundle is incident on the phosphor element in a manner widened around a focus point.

Abstract: A light source and corresponding method of manufacturing are provided. The light source includes a base. A first light-emitting element is disposed on the base and emits first emission light having a first spectrum. A second light-emitting element is disposed on the base adjacent to the first light-emitting element. The second light-emitting element emits second emission light having a second spectrum different from the first spectrum. A reflector is disposed between the first light-emitting element and the second light-emitting element. The reflector reflects, among components of the first emission light, a component of the first emission light that travels toward the second light-emitting element.

Abstract: An adjustable headlight includes a headband and an adjustable illumination device mounted on the headband. The adjustable illumination device includes a light source, a lens, a rotating shell, a first adjuster, a second adjuster, a tubular electrical conductive rack, and a base. The light source is electrically connected to the top end of the tubular electrical conductive rack. The lens is mounted on the front end of the rotating shell. The first adjuster is rotatably connected to the rotating shell. The second adjuster drives the tubular electrical conductive rack to be rotatably coupled with the first adjuster and the base. Rotating the rotating shell changes the distance between the light source and the lens, so as to achieve focus adjustment within the adjustable headlight without changing external length of the device. The device is adapted for being worn on the user's head in various circumstances.

Abstract: An inflatable solar-powered light is provided. The solar-powered light includes a bladder and a solar-powered light assembly disposed entirely within the bladder. The solar-powered light assembly includes a solar panel, a rechargeable battery in electrical communication with the solar panel, and at least one light-emitting diode in electrical communication with the rechargeable battery. The bladder is substantially transparent, flexible, inflatable, and collapsible.

Abstract: Provided is a light-emitting device in which a light-emitting region is increased in size without decreasing the yield. This light-emitting device includes a central light-emitting unit, and a plurality of peripheral light-emitting units arranged to fill a periphery of the central light-emitting unit, wherein each of the central light-emitting unit and the peripheral light-emitting units includes a substrate and light-emitting elements mounted on the substrate, and an area of the light-emitting region of each of the peripheral light-emitting units is equal to or smaller than an area of the light-emitting region of the central light-emitting unit.

Abstract: An LED light fixture is provided and includes a housing having a main body portion with a rear wall. A plurality of fins integrally extends from an outer surface of the rear wall of the main body portion. A spindle with an internal bore integrally extends from the outer surface of the rear wall of the main body portion wherein the spindle is positioned among the fins. A light engine assembly is positioned within the main body portion and includes a plurality of LED light modules mounted to a printed circuit board. Each module comprises a LED and a lens extending from the printed circuit board, wherein the printed circuit board resides against an inner surface of the rear wall. A separate enclosure configured to enclose power management components is connected to a rear portion of the housing proximate the fins.

Abstract: A beacon for obstruction lighting (10) comprising a frame with a base (12) and a side, the side including a side wall (18) extending upwardly from the base with the side wall having at least one channel (26) formed therein and with a channel electric contact located proximate the channel, and an LED strip (28) having an LED electric contact (33) which is inserted in the at least one channel, and a cover (22) over the frame.

Abstract: Apparatus and methods to simulate current local outdoor lighting conditions, current lighting conditions of another location, or programmed outdoor lighting conditions are provided. The apparatus comprises at least one lighting device and one or more computers for controlling the lighting device, and may include one or more photosensors. The apparatus may resemble a window and may be installed on or in a building surface. The lighting device comprises one or multiple lighting elements to emit a spectrum of light, at variable brightness levels, to reproduce a range of outdoor light conditions. The apparatus may comprise elements to produce a directionality or diffuseness to the emitted light. One or more photosensors may sense outdoor lighting conditions, and transmit that information to the computer controlling the apparatus. The apparatus may be programmed without the photosensor, or be internet-connected to access programming or current lighting conditions of another location and/or time.

Abstract: A lighting system is configured to provide lighting on an interior of a utility platform. The lighting system comprises a rope light and a power source for installing in or near the utility platform. The rope light includes a plurality of light emitters and a casing. The casing surrounds the plurality of light emitters, which are spread along the rope light. The rope light is configured to provide light to an interior surface of the utility platform. The isolated power source provides electrical power to the rope light, and is configured to prevent a discharge of electricity.

Abstract: Imitation candle devices and systems with enhanced features enable simulation of a realistic candle flame using multiple light sources that illuminate a surface area of an imitation flame element in a controlled manner. The disclosed imitation candle devices further allow the candle to be turned on or off by pushing down on the flame element, thus eliminating a need for additional external switches.

Abstract: A flame simulator can include a light beam source, a range limiter, a light beam mover, a power supply, a power control circuit, and a flame screen. The light beam source can be adapted to project a movable beam of light with a circular, oval, elliptical, or otherwise round, cross-sectional shape and with an intensity, shape and/or color that mimics a flame (e.g., a candle flame) when the beam strikes the flame screen. The light beam mover can generate beam movement and the range limiter can limit the range of movement so that the beam stays mostly on the flame screen in a region bounded by the typical range of movement of a flame being simulated (e.g., a candle flame moving in response to ambient air currents). The light beam mover can cause the illumination provided by the beam to dance on the flame screen with variations in position and shape that mimic a dancing flame (e.g., a candle flame being blown about by air currents). One or more of the flame simulators can be incorporated into an imitation candle.

Abstract: A lighting and/or signaling device, for a vehicle, including a light source positioned on a module assembled onto an optical device, the optical device and the module including a first reference mechanism including: at least one slideway mounted on the optical device, the slideway including an interior reference face placed opposite an interior guide face, and at least one extension extending from the module, the extension including a reference bearing face, opposite a contact face, the contact face including at least one contact point. The contact face is configured such that, when the extension has been introduced into the slideway along a direction of introduction, the contact face bears at the contact points against the interior guide face and, locally, at the contact point, the slideway and/or the extension are elastically deformed.

Abstract: Disclosed is a light-emitting module, comprising: a circuit board, a conductive layer, an LED chip, and an adhesive layer. The circuit board comprises a chip-attachment area, the conductive layer being disposed on the chip-attachment area, the LED chip being disposed on the conductive layer and electrically connected to the circuit board through the conductive layer, and the adhesive layer being used for connecting the LED chip to the circuit board, wherein a curing temperature of the adhesive layer is lower than a melting point of the conductive layer. Adopting the aforementioned technical means, the degree of offset in the position of the LED chip after reflow soldering can be greatly reduced. In addition, a vehicle lamp device using the light-emitting module is also provided.

Abstract: In various embodiments, a vehicle lamp is provided. The vehicle lamp includes at least one semiconductor light source, at least one light emission body, and a concentrator arranged between the at least one semiconductor light source and the respective light emission body. A larger light entrance area of the concentrator is separated from the at least one semiconductor light source by a gap. The concentrator at its smaller light exit area transitions into the light emission body. The light emission body has at least one region covered with a partly transmissive layer.

Abstract: A lens body includes a first lens portion and a second lens portion and is configured such that light from a light source exits through a first exit surface of the first lens portion after being partially blocked by a shade of the first lens portion, further exits through a second exit surface of the second lens portion, thereby forming a predetermined light distribution pattern by the shade, wherein the first exit surface is a surface for condensing the light from the light source that exits through the first exit surface with respect to a first direction and is configured as a semicircular cylinder surface, and the second exit surface is a surface for condensing the light from the light source that exits through the second exit surface with respect to a second direction orthogonal to the first direction and is also configured as a semicircular cylinder surface.

Abstract: A vehicle lighting module is disclosed including a lighting unit comprising a solid state light element; a reflector arranged to reflect light emitted by the solid state light element; and a lens array opposite the reflector, said lens array comprising a plurality of substantially upright columnar lenses for distributing the reflected light in a plane perpendicular to the propagation direction of said upright lenses, wherein the solid state light element is arranged such that at least most of the emitted light is directed towards the reflector.

Abstract: Provided is a lighting apparatus for an automobile which improves luminous efficiency. To this end, the lighting apparatus for an automobile according to the embodiment of the present invention includes: a light source which produces light; a reflector which reflects the light produced by the light source; and a light guide which is illuminated with the light produced by the light source while the light passes through an interior of the light guide.

Abstract: A fog lamp for use in an automobile includes a light source, a reflector, and a condenser lens. The front surface of the condenser lens includes an emission region and two diffusion regions. The diffusion regions have a surface treatment that diffuses transmitted light, such as knurling, frosting, texturing, or pillowing. Light emitted by the light source is directed by the reflector through the condenser lens and exits the condenser lens through the emission region. Light that enters the condenser lens through one of the diffusion regions from outside of the lamp, such as solar light, is diffused and reduced in intensity. The diffusion regions may be positioned relative to a back surface of the lens to cause the diffused light to be reflected due to total internal reflection. The diffused light may exit the lens through the other diffusion region and become further diffused and reduced in intensity.

Abstract: A thin aspect lighting system and method are shown. The system and method include at least one module having a reflector that is generally elliptical in one cross-section and generally parabolic in another cross-section. Each module is adapted to generate at least one of a flat beam pattern, a high beam pattern or a low beam pattern, such as a low beam pattern with a kink or elbow. Also shown is a headlamp assembly having a plurality of modules that generate the same or a different light beam pattern. Manipulation and variation of facets and/or positions of various components, such as at least one light source, have been found to provide improved characteristics in one or more of the light beam patterns.

Abstract: A light source device includes a light source unit comprising a laser element configured to emit laser light, and a cap hermetically sealing the laser element; a wavelength conversion unit comprising a fluorescent material-containing member containing a fluorescent material adapted to be excited by the laser light; a light-shielding member having a pipe shape and having a first end with a first opening and a second end with a second opening, wherein the light-shielding member defines a hollow optical waveguide between the first end and the second end, the first opening at the first end is covered by the light source unit, and the wavelength conversion unit is arranged at the second end, thereby allowing the laser light propagating through the hollow optical waveguide to reach the fluorescent material-containing member; and an optical member configured to collimate the laser light and direct collimated laser light to the hollow optical waveguide.

Abstract: A reflective light guide includes a cylinder enclosed by more than three reflecting plates which connected with each other in turn. The reflecting plate includes a plate body and a reflecting layer arranged on the plate body, along the exit direction of light. The cylinder includes a light inlet part, a light reflecting part and a light outlet part in turn, wherein the light outlet part larger than the light inlet part such that the cylinder being cone shaped. The LED light source with a reflective light guide tube includes a LED light source and a reflective light guide tube. The optical system includes a reflective light guide tube, a LED light source and an optical assembly.

Abstract: The present invention provides a vehicle lamp including a plurality of light sources which are arranged in a length direction; a bezel unit formed to be elongated along the light sources, made of a thermally conductive material, and including a thermal radiation region; a radiation plate mounted on each of the plurality of the light sources; and an insert unit configured to connect the radiation plate and the bezel unit to transfer heat generated by the radiation plate to the bezel unit, wherein a ratio of a thickness of the radiation plate to that of the insert unit is 5:2 so that an advantageous effect in which heat is induced to be effectively transferred from the radiation plate to the insert unit.

Abstract: A lighting fixture for promoting the development of animals comprises a backlight, such as an LED or an array of LEDs, and a series of one or more retractable, rotatable or interchangeable lenses comprising quantum dots, such that the color and/or color temperature of the light emitted by the lighting fixture can be altered and optimized during animal development. A lighting fixture adapted for use on an aquarium may be in the form factor of a standard fluorescent tube and comprise one or more LEDs and a quantum dot-containing film for down-converting at least a portion of the light emitted by the LEDs so as to provide optimum wavelengths for photosynthesis by aquarium plants while simultaneously providing attractive display lighting for the aquarium fish.