The Rank Organisation Plc

David George Demaine

William T Moore

John David Archer

Peter F Stillwell

David Gordon Norrie

Richard Lawrence Fisher

An optical scanning device is provided of the kind having optical elements which are rotated and/or oscillated to scan incident light across a detector array. By arranging for successive scans of a plurality of rows of detector elements to overlap, each line of picture information of a scene under surveillance is scanned at least twice during a complete monitoring of the scene, the corresponding detector array output signals being summed to assemble a plurality of summed signals in which there is coherent addition of picture information and incoherent addition of noise. The summed signals are processed into television format for display.

Thermal scanning devices

In an optical display system, information recorded on a face plate or like optical element is injected into a main optical path by means of a standby sight device comprising a lens unit and a flexible fibre optic bundle having a numerical aperture sufficiently large to cover the maximum acceptance angle of the lens unit.

Face plate graticule

An optical system for guiding the pilot of a ground-maneuvering aircraft towards a parking bay has, an illuminated target positioned behind a fixed stop aperture along a line of sight of the pilot which is inclined to the direction of approach of the aircraft to the bay. As the aircraft advances different areas of the target come successively into sight by parallax, and these may be differently colored to indicate the correct stopping position and also whether the aircraft is to the left or right of the correct approach line.

Growing community of inventors

Leeds, United Kingdom

David George Demaine