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:
Sep. 14, 2004
Filed:
Jul. 12, 2002
Donald John Janeczko, Fincastle, VA (US);
Anthony Mong-On Tai, Northville, MI (US);
ITT Manufacturing Enterprises, Inc., Wilmington, DE (US);
Abstract
The present invention relates to an optical system for directing light from an image source to a viewer's eye. The system includes an image source providing an image source light; a collimator for receiving the image source light and converting the received image source light into a collimated light projected along a first optical path; and a planar diffractive relay including opposing planar surfaces longitudinally oriented substantially along a second optical path, the opposing planar surfaces terminating into an input tilted surface and an output tilted surface. The collimated light is projected along the first optical path and redirected by the input tilted surface as propagated light traveling in the second optical path. The propagated light traveling in the second optical path is redirected by the output tilted surface into a third optical path directed toward the viewer's eye.