Optical: systems and elements – Single channel simultaneously to or from plural channels – By partial reflection at beam splitting or combining surface
Patent
1993-08-04
1995-10-17
Sugarman, Scott J.
Optical: systems and elements
Single channel simultaneously to or from plural channels
By partial reflection at beam splitting or combining surface
359631, 359632, 359633, 359637, 359639, 359640, G02B 2714
Patent
active
054596122
ABSTRACT:
A helmet mounted display system comprising an eyepiece (3) through which a wearer of the helmet directly views a forward scene (13). The eyepiece also serves to combine an intensified image of the forward scene with the wearer's direct view of the scene. The intensified image is produced by an optical arrangement including an image intensifier (6) from which light is passed to the eyepiece via a prism (2). The prism serves to compensate for orientation of the intensified image in other parts of the optical arrangement so that the intensified image is in the same orientation as the wearer's direct view of the forward scene. In addition the prism allows the various components in the system light path to conform to the profile of the helmet thereby making the helmet more comfortable for a wearer.
REFERENCES:
patent: 4081209 (1978-03-01), Heller et al.
patent: 4361384 (1982-11-01), Bosserman
patent: 5249081 (1993-09-01), Rogers
GEC--Marconi Limited
Papalas Michael A.
Sugarman Scott J.
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