摘要:
A method for identifying localized optical emission is disclosed. The method involves identifying a region, which corresponds to a plurality of scintillator units of a scintillator, on a position sensitive photodetector that is impacted by one or more photons. The method further involves identifying a readout channel of a pixellated photodetector array that corresponds to a pixel associated with a scintillator unit impacted by the one or more photons. The method, further involves, identifying the scintillator unit based on the region and the readout channel.
摘要:
A method for localizing optical emission is disclosed. The method involves identifying a first readout channel of a first pixellated photodetector array based on an impact of a first photon on the first pixellated photodetector array. The first photon is emitted by a scintillator unit of a scintillator array and the first readout channel corresponds to a column of one or more pixels of the first pixellated photodetector array. The method also involves identifying a second readout channel of a second pixellated photodetector array based on an impact of a second photon on the second pixellated photodetector array. The second photon is emitted by the scintillator unit and the second readout channel corresponds to a row of one or more pixels of the second pixellated photodetector array. The method further involves identifying the scintillator unit based on the first readout channel and the second readout channel.
摘要:
An imaging system configured to provide improved position resolution is disclosed. The imaging system includes detector acquisition circuitry that is configured to acquire a plurality of rise-times and a plurality of amplitudes from a detector assembly that includes an array of one or more detector elements. The imaging system also includes position determining circuitry that is configured to determine a plurality of respective impact positions on each of the detector elements. The plurality of impact positions is based on at least the plurality of rise-times and the plurality of the amplitudes acquired by the detector acquisition circuitry.
摘要:
A technique is provided for manufacturing a multi-anode photomultiplier tube for use in positron emission tomography (PET) detectors. One or more optical properties within an entrance window of the multi-anode photomultiplier tube are altered at a focal spot via a laser. The focal spot is translated relative to the entrance window for creating a three-dimensional pattern within the entrance window. This three-dimensional pattern having the one or more optical properties altered is adapted to control the spreading of optical photons within the entrance window.
摘要:
A steering system for a vehicle having a body supported on at least two sets of steerable wheels, generally consisting of a steering shaft provided with a wheel, supported on such body; a torque transmitting main shaft supported longitudinally on the body; means operatively interconnecting the steering shaft and the main shaft for transmitting rotary motion of the steering shaft to rotary motion of the main shaft; a first transversely displaceable means operatively interconnecting knuckle brackets of one of the sets of steerable wheels; means operatively interconnecting the main shaft and the first transversely displaceable means for translating rotary motion of the main shaft to linear motion of the first transversely displaceable means; second transversely displaceable means operatively interconnecting knuckle brackets of the other of the sets of steerable wheels; and means operatively interconnecting the main shaft and the second transversely displaceable means for translating rotary motion of the main shaft to linear motion of the second transversely displaceable means.
摘要:
A wheel suspension system for a vehicle having a body supported on a set of wheels each provided with a rim and an axle generally consisting of a lower control arm pivotally connectable to a first portion of such body; an upper control arm pivotally connectable to a second portion of such body; a roller bearing having inner and outer races, disposed within such rim, coaxially relative to the rotational axis of the rim; a steering plate mounted on the outer race of the bearing, having a first portion universally connected to the lower control arm and a second portion universally connected to the upper control arm, defining a steering axis intersecting the rotational axis of the rim; and a hub member mounted on the inner race and connectable to an axle receivable through an opening provided in the steering plate.
摘要:
A steering system for a vehicle having a body supported on at least two sets of steerable wheels, generally consisting of a steering shaft provided with a wheel, supported on such body; a torque transmitting main shaft supported longitudinally on the body; means operatively interconnecting the steering shaft and the main shaft for transmitting rotary motion of the steering shaft to rotary motion of the main shaft; a first transversely displaceable means operatively interconnecting knuckle brackets of one of the sets of steerable wheels; a steering gear directly operatively interconnecting the main shaft and the first transversely displaceable means for translating rotary motion of the main shaft to linear motion of the first transversely displaceable means; second transversely displaceable means operatively interconnecting knuckle brackets of the other of the sets of steerable wheels; and a steering gear directly operatively interconnecting the main shaft and the second transversely displaceable means for translating rotary motion of the main shaft to linear motion of the second transversely displaceable means.
摘要:
A wiper assembly for a vehicle having at least one vision block within an outer face, generally consisting of a guide cylinder supportable on the vehicle, disposed adjacent and substantially parallel to the face of the vision block; a piston disposed in the guide cylinder and displaceable along the length thereof, provided with a magnetic element; a follower mounted on the guide cylinder, displaceable along the length thereof, provided with a magnetic element magnetically coupled to the magnetic element of the piston for displacement therewith; a wiper carried by the follower, having a portion engaging the outer face of the vision block in wiping relation therewith; and means operatively connectable to a source of fluid under pressure for alternately supplying fluid under pressure to opposite ends of the guide cylinder for reciprocating the piston and correspondingly the wiper along the outer face of the vision block.
摘要:
A power plant and driveline arrangement for a vehicle having at least two wheel units and a body supported on the wheel units generally consisting of an engine supported on the body; a transmission supported on such body disposed on the underside of the engine; a first transfer case for transferring drive from an output shaft of the engine to an input shaft of the transmission; a second transfer case for transferring drive from an output shaft of the transmission to forwardly and rearwardly projecting output shafts; a first wheel carrier supported on the body forwardly of the second transfer case, having an input shaft drivingly coupled to the forwardly projecting output shaft of the second transfer case, and a pair of laterally projecting half shafts operatively connected to the wheels of the first wheel units; and a second wheel carrier supported on the body rearwardly of the second transfer case, having an input shaft drivingly coupled to the rearwardly projecting output shaft of the second transfer case, and a pair of laterally projecting half shafts operatively connected to the wheels of a second wheel unit.
摘要:
A wheel assembly for a vehicle having a body, a power plant and a drivetrain for transmitting drive to said wheel assembly, generally consisting of a wheel including rim and hub portions; a roller bearing having inner and outer races, disposed within the rim portion of the wheels, coaxially therewith; first support means having a steering axis, mounted on the outer race of the bearing connectable to the body; second support means mounted to the inner race of the bearing and rigidly secured to the hub portion of the wheel; and an axle operatively connected at an inner end thereof to a portion of the drivetrain and an outer end extending into the inner race of the bearing and connected by means of a single universal joint to one of the second support means and the hub portion of the vehicle; wherein the steering axis intersects the center of the single universal joint.