Thermal imaging device with scanned light emitting diodes (LEDs) having variable width geometry and interlacing

摘要

A thermal imaging device (10) includes a detector (50) having a linearly-arrayed plurality of spaced apart detector elements (50') upon which portions of a viewed scene are sequentially scanned by a scanner (22) in order to capture image information from the scene. A display device (22, 62, 66) similarly includes a first linear array of plural spaced apart light emitting diodes (LEDs) (62') which provide light scanned by the same scanner (22) to a user of the thermal imaging device (10) to provide an image replicating the viewed scene. The LEDs (62') of the display (22, 62, 66) are configured so that sequential portions of the image are interlaced and partially overlapped by the scanner (22) to provide a flat visual field which is free of raster lines. The display device (22, 62, 66) includes a second linearly-arrayed plurality of symbology LEDs (198) which are configured and positioned relative to the first plurality of LEDs (62') so that light from these LEDs is interlaced but not overlapped and so that symbology imagery presented by the second plurality of LEDs (198) is superimposed on the scene image presented to the user of the thermal imaging device (10).