A variable-collimation display system

Robert Batchko; Sam Robinson; Jack Schmidt; Benito Graniela

doi:10.1117/12.2044075

6 March 2014 A variable-collimation display system

Robert Batchko, Sam Robinson, Jack Schmidt, Benito Graniela

Proceedings Volume 9011, Stereoscopic Displays and Applications XXV; 901109 (2014) https://doi.org/10.1117/12.2044075
Event: IS&T/SPIE Electronic Imaging, 2014, San Francisco, California, United States

Abstract

Two important human depth cues are accommodation and vergence. Normally, the eyes accommodate and converge or diverge in tandem; changes in viewing distance cause the eyes to simultaneously adjust both focus and orientation. However, ambiguity between accommodation and vergence cues is a well-known limitation in many stereoscopic display technologies. This limitation also arises in state-of-the-art full-flight simulator displays. In current full-flight simulators, the out-the-window (OTW) display (i.e., the front cockpit window display) employs a fixed collimated display technology which allows the pilot and copilot to perceive the OTW training scene without angular errors or distortions; however, accommodation and vergence cues are limited to fixed ranges (e.g., ~ 20 m). While this approach works well for long-range, the ambiguity of depth cues at shorter range hinders the pilot’s ability to gauge distances in critical maneuvers such as vertical take-off and landing (VTOL). This is the first in a series of papers on a novel, variable-collimation display (VCD) technology that is being developed under NAVY SBIR Topic N121-041 funding. The proposed VCD will integrate with rotary-wing and vertical take-off and landing simulators and provide accurate accommodation and vergence cues for distances ranging from approximately 3 m outside the chin window to ~ 20 m. A display that offers dynamic accommodation and vergence could improve pilot safety and training, and impact other applications presently limited by lack of these depth cues.

Citation Download Citation

Robert Batchko, Sam Robinson, Jack Schmidt, and Benito Graniela "A variable-collimation display system", Proc. SPIE 9011, Stereoscopic Displays and Applications XXV, 901109 (6 March 2014); https://doi.org/10.1117/12.2044075

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