摘要:
A light emitting system includes an LED structure outputting light in a pattern about an axis. The light emitting system also includes an optical coupling device (10) having a central axis and a reflecting surface positioned relative to the LED structure to accept light from the LED structure and to direct the light to exit the optical coupling device in a direction substantially perpendicular to the central axis. The light emitting system further includes at least one light guide (84) positioned relative to the optical coupling device to accept light emitted from the optical coupling device.
摘要:
An LED with improved current spreading structures that provide enhanced current injection into the LED's active layer (14), improving its power and luminous flux. The current spreading structures can be used in LEDs larger than conventional LEDs while maintaining the enhanced current injection. The invention is particularly applicable to LEDs having insulating substrates (12) but can also reduce the series resistance of LEDs having conductive substrates. The improved structures comprise conductive fingers (20a, 20b, 22) that form cooperating conductive paths that ensure that current spreads from the contacts (19, 21), into the fingers (20a, 20b, 22) and uniformly spreads through the oppositely doped layers (15, 16). The current then spreads to the active layer (14) to uniformly inject electrons and holes throughout the active layer (14), which recombine to emit light.
摘要:
A device (1; 101) for controlling the flow of a fluid through a conduit (2; 102; 402; 602; 702) from an upstream side (3; 103; 703) to a downstream side (5; 105; 405; 605; 705), the device (1; 101) comprising: a valve having a valve member (14; 114; 414; 514; 614) arranged to move reciprocally selectively to open and close one or more valve apertures (10; 110; 412; 512; 611, 612), thereby controlling flow of the fluid from the upstream side (3; 103; 703) to the downstream side (5; 105; 405; 605; 705); and means for introducing a reference pressure (24; 124; 324; 424; 524; 624); wherein said valve member (14; 114; 414; 514; 614) is acted on by the pressure of the downstream side (5; 105; 405; 605; 705) and the reference pressure so as to be moved by the difference between said pressures.
摘要:
Lighting devices and methods utilize multiple independently controllable groups of solid state light emitters of different dominant wavelengths, with operation of the emitter groups being automatically adjusted by processor(s) to provide desired illumination. Operation of the emitter groups may be further affected by sensors and/or user input commands (e.g., sound patterns, gesture patterns, or signal transmission). Operation may be adjusted to compensate for presence, absence, intensity, and/or color point of ambient or incident light. Presence of five or more groups of solid state light emitters provide desirable luminous flux, color point, correlated color temperature (CCT), color rendering index (CRI), CRI R9, and luminous efficacy characteristics of aggregate emissions over a wide range of CCT values, and may permit adjustment of vividness (e.g., relative gamut) and/or melatonin suppression characteristics for a selected color point or CCT.
摘要:
A storage device having a first member and a second member between which is a storage space. Adjacent the top of the first member there is an upwardly projecting integral portion of the first member which forms a first element of a label tag. The first element of the label tag is provided with an open window. Behind the window is a separate cover sheet, which is secured to the first element of the label tag so that a label can be inserted and retained behind the window. The cover sheet provides a writing surface facing the window and in the absence of a label this can be written by means of a writing implement which extends through the window. The writing surface may act as a whiteboard and may have enhanced dry erase performance, for example by having a glossy finish.
摘要:
An apparatus (2) for dissolving a gas into a liquid includes a liquid inlet (4) for supplying liquid into the apparatus, a gas inlet (6) for supplying gas into the liquid within the apparatus and a venturi (52) arranged to dissolve the gas into the liquid passing through the venturi. The apparatus also includes an outlet (18) for the liquid and dissolved gas downstream of the venturi. At least part of the liquid inlet, at least part of the gas inlet, at least part of the venturi and at least part of the outlet are formed in an integrally formed piece of material (42).
摘要:
A device (1) for immunochromatographic assay comprises a housing (12) and a cup body (11). The housing (12) comprises an upwardly-extending hollow bulge (121) for receiving the cup body (11). The cup body (11) comprises a cup body wall and a cup body bottom. A protruding tip (126) and an enclosure surrounding the tip (126) are arranged in the housing (12). The cup body (11) and the protruding tip (126) can be moved towards each other so that the protruding tip (126) can break the cup body bottom to release liquid in the cup body (11).
摘要:
A method of producing a localised concentration of energy including providing a pocket of gas in a non-gaseous medium and in contact with a surface. The surface includes a depression shaped so as to at least partially receive the pocket of gas. A static pressure is applied to the non-gaseous medium, with an average value greater than atmospheric pressure such that the pocket of gas collapses to form a transverse jet. The surface depression is arranged to receive the transverse jet impact such that at least some of pocket of gas is trapped between the impacting jet and the surface depression. An apparatus for producing a localised concentration of energy is also provided.
摘要:
A data processing system (10) for compressing gamma spectroscopy data includes a data input (18) for receiving data representing counts for each of a plurality of bins. The counts represent a set of binned gamma spectroscopy data. The data processing system (10) also includes a processor (20). The processor (20) is arranged to: read the counts in each bin; calculate a measure representative of the counts using the counts in one or more of the bins; choose, using the measure, which one of at least two compression schemes to use to compress the data representing the counts; and compress the data representing the counts according to the chosen compression scheme; and write the compressed data representing the counts to a data storage device (22).