Display instrument using optical collimation

Details Display instrument using optical collimation Display instrument using optical collimation

1977-06-17

1978-09-05

Henry, Jon W.

G02B 2714

Patent

active

041115279

ABSTRACT:
A display instrument using optical collimation for projecting data into the line of sight of an observer, comprising an optical lens which projects images of luminous objects focused at infinity onto a transparent combining glass. The luminous objects corresponding to data be displayed are positioned in the focal zone of the lens. The images are reflected by the glass into the observer's line of sight. A reflective optical element is arranged parallel to the glass, in the space contained between the optical lens and the field of vision of the observer, to provide an additional optical pupil which forms in conjunction with the original pupil of the instrument an enlarged pupil.

REFERENCES:
patent: 3778548 (1973-12-01), Wistri

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