Abstract: A high-frequency detection system (100) such as a terahertz camera is disclosed which includes a first detector array (102), a second detector array (104), and a polarizing plate (106). The polarizing plate is interposed between the detector arrays such that it passes and/or reflects radiation signals (110) from a source (108) to the detector arrays. A first radiation signal (112) having a first polarization is passed through the polarizing plate to the first detector array, and a second radiation signal (114) having a second polarization is reflected from the polarizing plate to the second detector array. Both radiation signals are from source (108), which can be one or more human beings emitting radiation towards the detection system. In some embodiments, the detector arrays (102, (104) may be joined.

Abstract: 1. An electronics assembly comprises: (i) a frame (1); (ii) a plurality of power supply modules (2) for supplying power to electrical circuitry of the assembly, each of which has an input power connector and an output power connector (27); and (iii) a power inlet connection module (26) which is electrically connected to a plurality of the power supply modules; wherein the power inlet connection module (26) is separated from the power supply modules (2) by an internal wall (36) of the frame which has, on one side thereof, at least one location element (50) for locating the power inlet connection module relative to the wall and, on the other side thereof, at least one location element (54) for locating each power supply module that is connected to the power inlet connection module relative to the wall so that the power supply modules are aligned with the power inlet connection module by means of the internal wall.

Abstract: An electronics assembly includes a chassis and a panel mounted on the chassis. The panel has an air filter on a surface of the panel which is retained in position on the panel by one or more retaining elements (80), for example plastics rivets, that can be operated to allow release of the air filter from the panel. The air filter can be changed very quickly during maintenance of the assembly without the need to switch the assembly off during changing of the air filter.

Abstract: A gasket (50) provides an EMI shield between part of a frame (1) of an electronics assembly and a component (2) of the assembly. The gasket is formed from a resiliently deformable electrically conductive sheet e.g. from spring stainless steel, and has an array of resiliently deformable fingers that extends along an edge region thereof for contacting either the frame (1) and the component, and a plurality of clips (60) that can engage corresponding attachment elements in the component or the frame respectively to form a mechanical connection therewith. The gasket is easy to locate in position and does not require the use of adhesive to retain it in position.

Abstract: 1.

Abstract: An electronics assembly comprises:

Abstract: An enclosure for an electronics assembly, comprises (i) a housing (1) having a recess (36); and (ii) a module (40) for holding one or more components of the assembly, the module being insertable into the recess by sliding, and removable therefrom by sliding in a direction opposite to the direction of insertion; and (iii) a spring retaining element (48) located in one of the housing and the module, the element being in the form of a resiliently deformable arm that engages the other of the housing and the module when the module is inserted into position within the recess in order to prevent removal of the module from the recess. The arm can be manually bent to release the module from the recess, but the housing or the module allows a degree of movement of the retaining element during release of the module that is insufficient to allow the arm to bend beyond its elastic limit. The enclosure enables the module to be held firmly in place, but allows quick and easy release for maintenance of the assembly.