A. Bergeron, H. Jerominek, M. Doucet, F. Lagacé, N. Desnoyers, S. Bernier, L. Mercier, M.-A. Boucher, M. Jacob, C. Alain, T.D. Pope, P. Laou "Dual-band dual field-of-view TVWS prototype" Proc. of SPIE, 6206, art. no. 62061O, 2006
Résumé: A dual band thermal/visible weapon sight (TVWS) prototype was developed by 1NO in collaboration with DRDC Valcartier. The TVWS operates in the 8-12 µm infrared (IR) and 300-900 nm visible wavebands for enhanced vision capabilities in day and night operations. It is equipped with lightweight athermalized coaxial catadioptric objectives, a bolometric IR imager operating in a microscan mode providing an effective resolution of 320 × 240 pixels and a visible image intensifier of 768 × 493 pixels. The TVWS is equipped with a miniature shutter for automatic offset calibration. Real-time imaging at 30 fps is available. Both the visible and IR images can be toggled with a single touch button and displayed on an integrated color micro liquid crystal display (LCD). The TVWS also has a standard video output via a coaxial connector. An integrated wireless analog RF link can be used to send images to a remote command control. The sight has an adjustable electronic crosshair and two manual focuses from 25 m to infinity. On-board processing capabilities were added to introduce specific functionalities such as image polarity inversion (black hot/white hot) and image enhancement. This TVWS model is also very lightweight (~ 1900 grams) and compact (volume of 142 cubic inches). It offers human size target detection at 800 m and recognition at 200 m (Johnson criteria) with the IR waveband while offering the human recognition at up to 800 m with the visible waveband. The TVWS is adapted for weaver or Picatinny rail mounting.
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