Apparatus for rapid prototyping and evaluation of wide-field-of-view helmet-mounted display symbology

Robert W. Marshall

doi:10.1117/12.177369

10 June 1994 Apparatus for rapid prototyping and evaluation of wide-field-of-view helmet-mounted display symbology

Robert W. Marshall

Proceedings Volume 2218, Helmet- and Head-Mounted Displays and Symbology Design Requirements; (1994) https://doi.org/10.1117/12.177369
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

Abstract

This paper documents an inexpensive apparatus intended for rapid prototyping and evaluation of alphanumeric and symbolic display formats. Emphasis is placed on symbology design for use in wide field of view (FOV) helmet-mounted displays (HMDs). The apparatus consists of a Silicon Graphics, Inc. (SGI) computer with standard monitor and mouse, Virtual Applications Prototyping System (VAPS) software, a rapidly reconfigurable flight simulator program (FLSIM), and a Fresnel lens-based optical system affording an 85 degree(s) X 70 degree(s) field of view. A preliminary experiment was conducted to verify the suitability of the apparatus for objective measurement of pilot performance during flight simulation. Five test participants attempted to maintain specified altitude and airspeed parameters while maneuvering an aircraft around a simulated airfield. Necessary flight information was presented via symbols located to the left and right of display centerline. Lateral separation between these symbols was varied; values of total angular separation ranged from 30 degree(s) to 70 degree(s), in 10 degree(s) increments. Test results indicate that the apparatus is suitable for the purpose intended. It was also determined that pilot performance in a demanding flight task may not necessarily degrade with increasing lateral separation when a wide field of view format is employed. This surprising (though preliminary) finding suggests that further research is warranted. Recommendations are made to further refine the apparatus and experimental methodology.

Citation Download Citation

Robert W. Marshall "Apparatus for rapid prototyping and evaluation of wide-field-of-view helmet-mounted display symbology", Proc. SPIE 2218, Helmet- and Head-Mounted Displays and Symbology Design Requirements, (10 June 1994); https://doi.org/10.1117/12.177369

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KEYWORDS

Head-mounted displays

Rapid manufacturing

Computer graphics

Computer simulations

Computing systems

Fresnel lenses

Prototyping

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