Head up display (HUD) using a bent waveguide assembly

US9507150B1 · kind B1 · utility

Assignee

• Rockwell Collins, Inc. · US

Inventors

• Eric P. Stratton · Portland, US
• Christopher Buchholz · West Linn, US
• Robert D. Brown · Lake Oswego, US
• Christopher A. Keith · New York, US
• James H. Stanley · Palo Alto, US

Key dates

• Filing date: May 10, 2013
• Grant date: Nov 29, 2016
• Expiry date: Aug 21, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2027/0194
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The head up display provides light from an image source. The head up display includes a waveguide assembly comprising a first waveguide for disposition at an angle with respect to a top surface of a glare shield and a second waveguide disposed at an angle with respect to the first waveguide. The first waveguide has a first diffractive coupler at a first end and a second waveguide has a second diffractive coupler at a second end. The first waveguide is positioned as a combiner and allows viewing of an outside scene and information from the image source. At least part of the first waveguide is disposed beneath the top surface of a glare shield.