Abstract: An optical system for coupling an output beam in an alignment direction from a semiconductor device output beam from a semiconductor device through a lens arrangement to focus the beam onto a center point of an input end surface of an optical transmission medium. The optical system includes a steering lens positioned between the semiconductor device and a focusing lens with the center of the steering lens in relative axial alignment with the output beam and may be laterally translated in a direction transverse to the axial direction of said beam for initially aligning the focused point of said beam in close proximity to said center point.

Abstract: A heatsink and an optical system are provided for use in conjunction with a dissipating semiconductor or electronic device, such as a light source, that generate a large amount of heat and is required to be cooled for optimum performance. The light source may be a laser diode or laser array or bar and is generally mounted on the heatsink with other optical components, such as collimating and focusing lenses, isolators or terminal ends of optical fibers, for coupling the output beam of the light source in aligned relation to these optical elements. Because of the higher temperature operation of such light sources, the heat generated causes thermal expansion of mechanically connected structures, such as between the heatsink for supporting the light source and its associated submount and an underlying support, usually a cooler.

Abstract: A thin film antenna for a vehicle antenna is described. The principal element of the antenna is formed of a thin transparent film of conducting material having a horizontally elongate generally rectangular shape. The principal element is supported on or within the upper region of a vehicle window and is electrically fed with respect to a ground point on the vehicle body to effect coupling with the metallic structure of the vehicle and enhance antenna performance. An optional auxiliary element can be attached to the principal element to provide a means for tuning the impedance of the antenna.