Device for the folding of the optical paths of two right-hand an

Details Device for the folding of the optical paths of two right-hand an Device for the folding of the optical paths of two right-hand an

1996-02-06

1998-11-10

Henry, Jon W.

Optical: systems and elements

Holographic system or element

Head up display

359 15, 359630, 359634, 345 7, 345 8, G03H 100, G02B 532, G09G 500

Patent

active

058352473

ABSTRACT:
A display system for a binocular helmet visor having image projectors projecting images on a semi-reflecting internal wall of the visor of the helmet. One image faces the right eye and another image faces the left eye. The shape of the surface of the internal wall of the visor makes it desirable to cross the optical paths of the two projectors at the helmet wearer's forehead in order to limit the deformation of the images. The optical paths of the two projectors are folded with holographic mirrors in a manner which results in a compact structure, reducing the space required for the visor and the overall weight of the helmet.

REFERENCES:
patent: 4897715 (1990-01-01), Beamon
patent: 5050962 (1991-09-01), Monnier et al.
patent: 5157548 (1992-10-01), Monnier et al.
patent: 5187597 (1993-02-01), Kato et al.
patent: 5396349 (1995-03-01), Roberts et al.
patent: 5453877 (1995-09-01), Gerbe et al.

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