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:
Oct. 15, 2019
Filed:
Dec. 19, 2016
Ziel Optics, Inc., Ann Arbor, MI (US);
Fred Collin, Brighton, MI (US);
Ziel Optics, Inc., Ann Arbor, MI (US);
Abstract
A compact sight device has a housing with a viewing and a target end. A light source projects a light beam along a path. A holographic optical element (HOE) is disposed in the path of the light beam such that the HOE is illuminated by the light beam at an incidence angle defined with respect to a line perpendicular to the surface of the HOE. The HOE reconstructs an object beam with an image of a reticle, the object beam having an object beam angle measured with respect to the line perpendicular to the surface of the HOE. The incidence angle and the object beam angle are substantially equal. The HOE further reflects a portion of the light beam at a reflection angle substantially equal to the object beam angle such that a user viewing the object beam will also see a reflected image of the light source.