Binocular vision system of a head mounted display unit

Details Binocular vision system of a head mounted display unit Binocular vision system of a head mounted display unit

1995-02-27

1998-11-10

Epps, Georgia Y.

Optical: systems and elements

Lens

Eyepiece

359716, G02B 2500, G02B 0302

Patent

active

058352791

ABSTRACT:
An optical system comprising three lenses concentrically housed in a frame is aligned with a screen on which a televisual image of a virtual reality application is displayed. The compact and high power lenses permit the eye of a viewer when placed at eye position to have a wide field of view of the magnified virtual image of the screen. To train the eye of the user along the optical axis of the system the lenses vignette the image on the screen when the eye is not closely aligned with the axis. By plastics moulding one or more of the lenses so that they are of truncated form it is possible for injection points of the mould to be adjacent truncated side faces thereby permitting a balanced generally free flow of material through the mould cavity which results in minimal optical stresses in the finished lens.

REFERENCES:
patent: 4679912 (1987-07-01), Loy
patent: 5162945 (1992-11-01), Matsuo et al.
patent: 5305147 (1994-04-01), Hasegawa et al.

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