Optic device for the introduction of a superimposed image into t

Details Optic device for the introduction of a superimposed image into t Optic device for the introduction of a superimposed image into t

1991-05-29

1992-10-06

Henry, Jon W.

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

359638, G02B 2710

Patent

active

051537745

ABSTRACT:
Disclosed is an optic device designed to enable an observer to look simultaneously at what is normally in his visual field and at a collimated image that is introduced so as to be superimposed on his visual field. The optic device has a plate with parallel faces in which the light rays coming from an image generator, through an access point, get propagated by total reflection on the parallel faces. A slab, formed by a stacking of plane mirrors, reconcentrates the light rays and directs them towards two successive, semi-reflecting mirrors which reflect them partially towards the observation pupil. The semi-reflecting mirrors are in the visual field of an observer's eye placed at the observation pupil.

REFERENCES:
patent: 4099841 (1978-07-01), Ellis

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