Gec-marconi Limited

Alan D MacLeod

Robert K McEwen

An display arrangement 16 comprises a two dimensional imaging array 3. Each column of the image array 3 is read sequentially by an electronic circuit 11. This energizes a one dimensional LED array 12 in dependence upon the received radiation. A motor 9 rotates a mirrored surface of a polygon 18 such that the image of the LED array is scanned. An observer viewing the LED array 12 via eyepiece 13 appears, due to persistence of visions, to see a complete image.

Two dimensional display produced by one dimensional scanned emitters

An imager comprises a lens 31 focusing radiation onto a sensor array 32, and a chopper comprising sectors which refract radiation in different directions such that an image is microscanned upon the sensor array 32. The chopper 4 is driven by motor 34 which also drives a polygon 37. The sensor array is read line by line and displayed on a linear array of LEDs 36 which appear to an observer observing through eye piece 38 as a complete two dimensional image as seen by the sensor ray 32. This is due to the persistence vision. Each facet of the polygon 37 is cut such that it compensates for the offset produced by the microscan.

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Essex, United Kingdom

Alan D MacLeod