Holographic head-up display combiners with optimal photometric efficiency and uniformity

Robert B. Wood; Mark A. Thomas

doi:10.1117/12.20934

1 October 1990 Holographic head-up display combiners with optimal photometric efficiency and uniformity

Robert B. Wood, Mark A. Thomas

Proceedings Volume 1289, Cockpit Displays and Visual Simulation; (1990) https://doi.org/10.1117/12.20934
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

Head-Up Displays (HUDs) utilizing holographic combiner elements can suffer from poor display brightness uniformity across the head motion volume or field of view. The brightness non-uniformity is due to angle differences between the construction and the enduse orreconstruction geometries. This problem is especially acute when holographic combinerelements are positioned relatively close to the pilot's design eye location, when large head motion volumes are desired, and when narrow-band phosphors (e.g. P-53) are used. This paper presents a hologram design approach that maximizes the HUD combiner phosphor reflectivity, the transmissivity through the combiners, and the display brightness uniformity. This technique can be applied to HUDs using dual combiners or wide field-of-view combiners.

Citation Download Citation

Robert B. Wood and Mark A. Thomas "Holographic head-up display combiners with optimal photometric efficiency and uniformity", Proc. SPIE 1289, Cockpit Displays and Visual Simulation, (1 October 1990); https://doi.org/10.1117/12.20934

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