Abstract:
The electron multiplier array consists of a plurality of multiplier channels (1) with each channel generally comprising a substrate (2), an anode (5) and a series of stacked insulation layers (7) and dynode layers (11) describing the walls of the channel. The electron multiplier array is robust and reduces the extent of the correction required for variations in performance between channels.
Abstract:
An optical micro sensor (1) for measuring one or more environmental parameters, such as pressure and temperature, through the modification of incident radiation. The sensor (1) is fabricated using MEMS technology and is adapted to receive an optical fibre (40) which communicates radiation to and from the micro sensor (1). The sensor (1) has an environmentally-sensitive element (4) which modifies the incident radiation communicated by the optical fibre (40). The modified radiation is communicated back along the optical fibre (40) and provides information regarding the environmental conditions surrounding the sensor (1). The pressure sensor is provided with a Fabry Perot cavity (3) in a first surface of a silicon wafer (2). The cavity is covered by a reflector at the environmentally-sensitive element (4). The diameter of the channel (7) holding the optical fibre (40) is greater than the diameter of the cavity (3). The temperature sensor is provided with luminescent material at the element (4). Also, a method of securing an optical fibre to a silicon block is claimed.
Abstract:
An optical micro sensor (1) for measuring one or more environmental parameters, such as pressure and temperature, through the modification of incident radiation. The sensor (1) is fabricated using MEMS technology and is adapted to receive an optical fibre (40) which communicates radiation to and from the micro sensor (1). The sensor (1) has an environmentally-sensitive element (4) which modifies the incident radiation communicated by the optical fibre (40). The modified radiation is communicated back along the optical fibre (40) and provides information regarding the environmental conditions surrounding the sensor 1.
Abstract:
A method of fabricating an electron multiplier array in which a plurality of apertures are etched through a construct (20) of a dynode layer (11) and an electrical-insulating layer (12) with a jet of hard powders (22). The construct (20) is then divided into smaller discrete segments and stacked such that the apertures in adjacent segments align to form channels. Alternatively, rather than dividing the construct (20) into smaller segments, a plurality of constructs (20) may instead be stacked to create a large-area electron multiplier array.
Abstract:
A large area detector (3) for use, for example, as an x-ray detector for medical imaging consists of a radiation sensitive detector (8) in combination with a monolithic amplification device consisting of a plurality of alternately stacked dynode and insulation layers having channels (6) extending therethrough in communication with respective signal collectors (10). The large area detector (3) is capable of being formed in tiles of 1 m or more whilst providing high resolution of the order of 50-60 pixels per mm .
Abstract translation:例如,用作医学成像的X射线检测器的大面积检测器(3)包括与由多个交替堆叠的倍增电极和绝缘层组成的单片放大器件组合的辐射敏感检测器(8) 与各个信号收集器(10)连通的通道(6)。 大面积检测器(3)能够形成为1m 2或更大的瓷砖,同时提供高达50-60像素/ mm 2的分辨率。
Abstract:
An optical micro sensor ( 1 ) for measuring one or more environmental parameters, such as pressure and temperature, through the modification of incident radiation. The sensor ( 1 ) is fabricated using MEMS technology and is adapted to receive an optical fibre ( 40 ) which communicates radiation to and from the micro sensor ( 1 ). The sensor ( 1 ) has an environmentally-sensitive element ( 4 ) which modifies the incident radiation communicated by the optical fibre ( 40 ). The modified radiation is communicated back along the optical fibre ( 40 ) and provides information regarding the environmental conditions surrounding the sensor ( 1 ). The pressure sensor is provided with a Fabry Perot cavity ( 3 ) in a first surface of a silicon wafer ( 2 ). The cavity is covered by a reflector at the environmentally-sensitive element ( 4 ). The diameter of the channel ( 7 ) holding the optical fibre ( 40 ) is greater than the diameter of the cavity. ( 3 ). The temperature sensor is provided with luminescent material at the element ( 4 ). Also, a method of securing an optical fibre to a silicon block is claimed.
Abstract:
An optical micro sensor ( 1 ) for measuring one or more environmental parameters, such as pressure and temperature, through the modification of incident radiation. The sensor ( 1 ) is fabricated using MEMS technology and is adapted to receive an optical fibre ( 40 ) which communicates radiation to and from the micro sensor ( 1 ). The sensor ( 1 ) has an environmentally-sensitive element ( 4 ) which modifies the incident radiation communicated by the optical fibre ( 40 ). The modified radiation is communicated back along the optical fibre ( 40 ) and provides information regarding the environmental conditions surrounding the sensor ( 1 ). The pressure sensor is provided with a Fabry Perot cavity ( 3 ) in a first surface of a silicon wafer ( 2 ). The cavity is covered by a reflector at the environmentally-sensitive element ( 4 ). The diameter of the channel ( 7 ) holding the optical fibre ( 40 ) is greater than the diameter of the cavity. ( 3 ). The temperature sensor is provided with luminescent material at the element ( 4 ). Also, a method of securing an optical fibre to a silicon block is claimed.
Abstract:
A method of manufacturing a component formed of parts capable of being separated for reassembly around another component. The process starts by taking separated, e.g., rod (3) and cap (5), forgings and coining or forging them together prior to machining. The mating surfaces of the forgings are formed with a ridge-groove or a dimple/lug-recess configuration giving them a self-locating ability. After machining, the forgings are fractured along the original division to obtain two uniquely matched surfaces that need no further processing before being reassembled, e.g, to form a connecting rod for an internal combustion engine.
Abstract:
A method of manufacturing a component formed of parts capable of being separated for reassembly around another component. The process starts by taking separate, e.g., rod (3, 3') and cap (5, 5') forgings and coining or forging them together prior to machining. The mating surfaces of the forgings are formed with a ridge-groove (9) or a dimple/lug-recess (12) configuration giving them a self-locating ability. After machining, the forgings are fractured along the original division to obtain two uniquely matched surfaces that need no further processing before being reassembled, e.g., to form a connecting rod for an internal combustion engine.
Abstract:
A motion platform for use in a simulator comprising linear slides 20, 30 providing surge and sway and a rotary table 40 providing yaw. Payload carrying platform 100 is mounted on the rotary table 40 via three bell cranks 56, 57, 58 to provide heave, pitch and roll.