Segmented 3-D hologram display

Details Segmented 3-D hologram display Segmented 3-D hologram display

1987-01-06

1989-01-03

Corbin, John K.

Communications: electrical

Land vehicle alarms or indicators

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

340103, 350 377, 350 385, 35016218, 353 14, G03H 126

Patent

active

047952237

ABSTRACT:
Segmented displays are provided on an automobile windshield by stacked or linearly arrayed holograms containing separate display segments selectively illuminatable by different wavelengths of light to provide a variable display. Each hologram is edge illuminated by a wavelength which differs from the wavelength used to illuminate adjacent holograms to provide, for example, a seven segment or bar graph display. A second embodiment provides a single hologram containing a seven segment digit with light beams selectively directed on the digits to display desired numerals.

REFERENCES:
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patent: 4407564 (1983-10-01), Ellis
patent: 4643515 (1987-02-01), Upatnieks
patent: 4688879 (1987-08-01), Fairchild
patent: 4740780 (1988-04-01), Brown et al.
Holography with Guided Optical Waves, by A. Wuetrich et al., Applied Physics 21, 55-64 (1980).

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