Combination reflective and holographic weapon sight
US10443977B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2016 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Jun 30, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/005
- WIPO fieldOptics
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.