Holographic head-up displays

Details Holographic head-up displays Holographic head-up displays

1978-07-10

1980-08-19

Corbin, John K.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

35 12N, 340705, 350 365, 350193, 350215, G02B 2700

Patent

active

042181119

ABSTRACT:
There is disclosed an integrated optical design of head-up displays suitable for use in aircraft cockpits and the like. The display system is comprised of a holographic optical element used as the combiner for presenting a direct view of the exterior on which are superimposed image signals generated by a source device such as a cathode ray tube and transmitted to the combiner through an optical system including a relay lens containing tilted and decentered optical elements to compensate for the aberration present in the holographic optical element. There are further disclosed four relay lens design forms particularly suited for use in the design of such holographic head-up displays. The disclosure includes integrated designs in which (a) the holographic element may or may not be constructed with aberrated wavefront and (b) a beam splitter is incorporated for insertion of a stand-by sight, possibly also being tilted for the correction of aberrations.

REFERENCES:
patent: 3378326 (1968-04-01), Alvarez
patent: 3533104 (1970-10-01), Habegger et al.
patent: 3737212 (1973-06-01), Antonson et al.
patent: 3807829 (1974-04-01), Close
patent: 3885095 (1975-05-01), Wolfson et al.
patent: 3915548 (1975-10-01), Opittek et al.
patent: 3940204 (1976-02-01), Withrington
patent: 3945716 (1976-03-01), Kinder
patent: 3949490 (1976-04-01), Derderian et al.
patent: 4018512 (1977-04-01), Sakai
"Head-Up Display Concept Under Development," Aviation Week & Space Technology, May 16, 1977, pp. 55-56.

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