Dielectric combiner including first and second dielectric materi

Details Dielectric combiner including first and second dielectric materi Dielectric combiner including first and second dielectric materi

1991-11-18

1993-03-16

Henry, Jon W.

Optical: systems and elements

Light interference

Produced by coating or lamina

359586, 359589, 359634, G02B 100, G02B 528, G02B 2714

Patent

active

051949890

ABSTRACT:
There is provided by this invention an apparatus for combining a reflected image in a heads-up-display system with an unobstructed view of the outside world and a system for providing a heads-up-display. The heads-up-display system utilizes a dielectric combiner in order to eliminate flare and increase the system's mechanical stability. The combiner apparatus is comprised of a transmissive substrate and a plurality of dielectric layers which selectively reflects light within a narrow range of wavelengths. The use of dielectric thin films provides a mechanically stable and durable combiner element for a heads-up-display system while eliminating the deleterious effects of flare present in combiner elements utilizing a holographic optical element.

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Ron Lovell, "New Displays for Space Flight", Electronics, Feb. 1964, pp. 42-43.

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