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US 5,348,477 AGranted
High definition television head mounted display unit
AssigneeCAE Electronics Ltd.
InventorsBrian L. Welch, Paul Weissman
Life of this patent
Estimating the term…
Abstract
An optical image is generated by an image source and is transmitted to an optical assembly by a fiber optic cable or cables. The optical assembly includes a transmission lens or lenses, rear projection screens and an eyepiece. By using a rear projection screen in the optical assembly, a non-pupil forming arrangement is provided.
Claims9
A display system for producing a replica of an image for viewing by an observer, comprising:
- A) means for generating said image;
- B) an optical assembly comprising:
- i) a rear projection screen means;
- ii) eyepiece means disposed in front of the eyes of said observer;
- C) fiber optic cable means for transmitting said image from said means for generating to said projection screen means;
- and
- projection lens means between said fiber optic cable means and said projection screen means;
- said projection screen means transmitting said image to said eyepiece means;
- said projection lens means and said projection screen means being arranged to form a coaxial optical system;
- whereby a non-pupil forming display of a replica of said image, which appears to originate from a great distance, is viewable by said observer.
7 more elements
Dependencies are inferred from the claim text.