The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 2019
Filed:
Dec. 04, 2015
Lockheed Martin Corporation, Bethesda, MD (US);
David Alan Smith, Cary, NC (US);
Gary E. Weise, Winter Park, FL (US);
Glenn Clark Cuddihy, Orlando, FL (US);
Gregory A. Harrison, Oviedo, FL (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
Head-mounted displays () are disclosed which include a frame (), an image display system () supported by the frame (), and a Fresnel lens system () supported by the frame (). The HMD () can employ a reflective optical surface, e.g., a free-space, ultra-wide angle, reflective optical surface (a FS/UWA/RO surface) (), supported by the frame (), with the Fresnel lens system () being located between the image display system () and the reflective optical surface (). The Fresnel lens system () can include at least one curved Fresnel lens element (). Fresnel lens elements () for use in HMDs are also disclosed which have facets () separated by edges () which lie along radial lines () which during use of the HMD pass through a center of rotation () of a nominal user's eye () or through the center of the eye's lens () or are normal to the surface of the eye's cornea.