Optical Design Of A Holographic Visor Helmet-Mounted Display

R. J. Withrington

doi:10.1117/12.956637

1 December 1978 Optical Design Of A Holographic Visor Helmet-Mounted Display

R. J. Withrington

Proceedings Volume 0147, Computer-Aided Optical Design; (1978) https://doi.org/10.1117/12.956637
Event: 22nd Annual Technical Symposium, 1978, San Diego, United States

Abstract

The optical design of a holographic visor helmet-mounted display built by Hughes Aircraft Company is described. In order to design the system, a technique for ray tracing holographic optical elements constructed with aberrated wavefronts has been incorporated into a comprehensive computer program. The design illustrates the use of aberrated wavefronts for constructing a highly off-axis holographic element on a helmet visor such that its aberrations are of a form that may be readily corrected with a relay lens containing cylindrical surfaces and with a tilted prism assembly. High diffraction efficiency across a wide field of view (FOV) with a volume hologram is obtained by placing the two coherent hologram construction sources close to the desired pupil locations. The chief rays are then reconstructed in a geometry similar to that used for hologram construction. Good correction of the monochromatic aberrations and high efficiency is achieved over a 30° FOV with a speed of F/2. 3

Citation Download Citation

R. J. Withrington "Optical Design Of A Holographic Visor Helmet-Mounted Display", Proc. SPIE 0147, Computer-Aided Optical Design, (1 December 1978); https://doi.org/10.1117/12.956637

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