摘要:
Techniques are disclosed for integrating the LED lead frame into the LED circuit fabrication process. The LED packages within the lead frame may be spaced according to the final spacing of the LED packages on the finished circuit board, such that multiple LED packages may be attached to a circuit board at a time by applying the lead frame to circuit board and then removing portions of the lead frame, leaving the LED packages attached to the board. The LED packages may be attached using solder or conductive epoxy, in some embodiments. Alternatively, part of the lead frame may include conductive wires forming one or more strings of LED packages. An entire string of LED packages may then be removed from the lead frame in a single motion and placement may be performed for a string of LED packages all at once rather than for individual LED packages.
摘要:
A light guide 2 for a ceiling downlight module 1 provides a batwing light distribution in a compact, flat form factor using edge-lit source light injection. A plurality of solid state light sources 16 inject light from peripheral side surface 12 inward into light guide 2 which has a disc-shaped light guide body 4 having a set of concentric annular steps or faces 42, 44, 46, 48, 50, 52 between which inwardly-facing light-exit rings or facets 24, 26, 28, 30, 32, 34 are formed. Light exiting the ring-shaped facets 24-34 provides substantial light intensity in lateral directions away from a normal optical axis A of light guide 2. Light exiting from facets 24-34 created an advantageous and aesthetically pleasing appearance of lighted rings.
摘要:
Structures for transitioning between two layers of differing lattice parameters are disclosed. In some embodiments, the structures are in the form of a superlattice that serves as a strain relieving transition between two layers of differing lattice parameters. By controlling the properties of the superlattice, the superlattice can exhibit desirable properties such as transparency to light and lattice matching to one of the two layers of differing lattice parameters. Optoelectronic devices such as light emitting diodes including such superlattices are also disclosed.
摘要:
Techniques are disclosed for designing light fixtures for flexible LED circuit boards. The flexible LED circuit boards include an array of LED packages and the surface of the flexible circuit boards is highly reflective. A flexible LED circuit board may be shaped to conform to a rigid preform and the preform may be concave, convex, corrugated, or have any other custom shape. The shape of the preform, as well as the location of the LEDs within the flexible LED circuit may determine the light distribution of the light fixture. Alternatively, the lighting fixture may have multiple rods held in place with side plates and a flexible LED circuit board may be woven between the rods. A set of hole patterns in the side plates determine the location of the rods and the rods will determine the shape of the flexible LED circuit.
摘要:
A mount (30) for a fluorescent lamp (32) has a glass flare (34) with a first portion (36) penetrating the fluorescent lamp (32) and a second portion (38) the fluorescent lamp (32). Two spaced-apart lead-in wires (40, 42) are sealed in the glass flare (34): and an electron emitter (12) is fixed between the spaced-apart lead-in wires (40, 42) and mated thereto by an electrical connection (46). The electron emitter (12) comprises a substrate (10) of a first material having an electron emitting material (11) thereon and two ends (20,22) and an element (23) mechanically and electrically fixed to each of the ends (20, 22), the element (23) comprising a second material different from the first material and is used to make the electrical connection (46) between the ends (20, 22) and the lead-in wires (40, 42).
摘要:
A low-profile cable is provided and includes a body having upper and lower portions that extend a length of the body and also having opposite sidewalls joining the upper and lower portions to one another. The cable also includes passages that are located between the sidewalls. The passages extend the length of the body and are configured to receive at least one twisted pair of conductors. Also, the cable includes a load-bearing structural section that spans between the upper and lower portions. The structural section includes opposing wall supports separated by a pocket channel therebetween. The structural section is configured to support the upper and lower portions and substantially resist deformation of the passages when external forces are induced onto at least one of the upper and lower portions.
摘要:
The present invention is directed to an inexpensive and compact apparatus adapted for use with a .sup.196 Hg isotope separation process and the conversion of anhydrous HCl to aqueous HCl without the use of air flow to carry the HCl vapor into the converter system.
摘要:
A flexible light engine, comprising insulating lower and upper laminate sheets; first and second electrically conductive metallic bus bars between the sheets; a plurality of electrically conductive metallic conductors between the sheets being disposed laterally between the bus bars, wherein each conductor defines two metallic contacts exposed in register with adjacent perforations in the perforated upper sheet; wherein each of the bus bars further comprises respective at least two interconnectors, and wherein the conductors are connected to respective interconnectors to define at least two series circuits and connectable in parallel between the bus bars, wherein each of the series circuits comprises a subset of the plurality of metallic conductors; and a plurality of LEDs attached to the contacts defining at least two series LED strings and connected in parallel between the bus bars, each said LED string comprising a plurality of LEDs.
摘要:
A conductive pathway mounted on an electrically insulating sheet having an upper face and an opposed lower face, said sheet having a plurality of pairs of apertures; a plurality of electrically conductive clips, each clip being separated spatially from an adjacent said clip; each electrically conductive clip comprising a first body portion and first and second depending legs defining a sheet-receiving recess therebetween, said first body portion being disposed in contacting relation with said upper face of said sheet and said legs being disposed in contacting relation with said lower face of said sheet; each leg of one of said electrically conductive clips extending through one of said apertures of a pair of said apertures from said upper face to said lower face; and a plurality of electrical components each mounted in conductive relationship to two adjacent said conductive clips and bridging said insulating sheet.
摘要:
A method of manufacturing a curved component of a lamp or luminaire comprising forming a sheet segment into a curved portion after forming an electrically conductive trace on the sheet segment and after placing a plurality of LEDs on the sheet segment is described. A luminaire provided by the method of manufacturing is also described herein.