Head-up display for automobile

Details Head-up display for automobile Head-up display for automobile

1994-12-23

1997-03-25

Dzierzynski, Paul M.

Optical: systems and elements

Holographic system or element

Head up display

359 14, 359 15, 359 16, 359630, 348115, G03H 100, G02B 532, H04N 700

Patent

active

056150237

ABSTRACT:
A head-up display for an automobile utilizing a light transmission hologram optical device as well as a light reflection hologram optical device. The head-up display is installed in a large truck or in a special freight car, such as a container car or a ready mixed concrete car, so that the head-up display informs a driver of information of conditions of dead ground of the car. The head-up display includes a hologram optical projection system and a holographic combiner. The projection system for projecting the light has a light source, an LCD for partially transmitting and shielding the light of the light source, and a light transmission hologram optical device for projecting the light. The holographic combiner for displaying the image includes a light reflection hologram optical device.

REFERENCES:
patent: 4001499 (1977-01-01), Dowell
patent: 4592620 (1986-06-01), Poole
patent: 4763990 (1988-08-01), Wood
patent: 5037166 (1991-08-01), Malcolm et al.
patent: 5085514 (1992-02-01), Mallik et al.
patent: 5164848 (1992-11-01), Firth

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