Patent · US Active

System for and method of displaying information without need for a combiner alignment detector

US9366864B1 · kind B1 · utility

85Cited by

374References

6Claims

0Family size

Assignee

Rockwell Collins, Inc. · US

Inventors

Robert D. Brown · Lake Oswego, US
Kurt A. Stahl · Portland, US
Lincoln J. Burns · Tigard, US

Key dates

Filing date	Mar 28, 2012
Grant date	Jun 14, 2016
Priority date	—
Expiry date	Jan 8, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG02B2027/0156
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A display can be utilized with an image source. The display includes a collimator and a substrate waveguide. The substrate waveguide sees collimated light from the collimator at an input and provides the collimated light to an output. The collimated light travels from the input to the output within the substrate by total internal reflection. An input diffraction grating is disposed in a first area at the input and an output diffraction grating is disposed in a second area at the output. The second diffraction grating is matched to the first diffraction grating. A combiner alignment detector is not required due to the periscopic effect according to one embodiment.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.