Head-up display system

Details Head-up display system Head-up display system

1992-05-22

1994-01-11

Bertsch, Richard A.

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

359640, G02B 2714, G02B 2712

Patent

active

052786960

ABSTRACT:
An improved head up display utilizes a prism to direct the image of a display CRT upward to a semi-transparent combiner element, permitting a substantially smaller vertical profile of the overall structure. An image is presented to a viewer that appears to be at infinity and is indistinguishable from the exterior scene as viewed from that vantage point. In alternative embodiments, the display unit can utilize more than one prism with one or more combiner elements to increase the vertical height of the viewed image of the CRT while dramatically reducing the vertical space required for the display unit in an instrument panel.

REFERENCES:
patent: 4099841 (1978-07-01), Ellis
patent: 4218111 (1980-08-01), Wirthington et al.
patent: 4655540 (1987-04-01), Wood et al.
patent: 5200844 (1993-04-01), Suvada

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