Patent · US Active

Head up display with an angled light pipe

US10295824B2 · kind B2 · utility

1Cited by

409References

20Claims

0Family size

Assignee

Rockwell Collins, Inc. · US

Inventors

Robert D. Brown · Lake Oswego, US
Eric P. Stratton · Portland, US

Key dates

Filing date	Feb 10, 2017
Grant date	May 21, 2019
Priority date	—
Expiry date	Jun 5, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG02B2027/0123
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A head up display includes a light pipe and a waveguide combiner. The light pipe is configured to expand a pupil in a first direction and includes an input grating and an output put grating. The light pipe also includes four elongated surfaces, and the input grating and the output grating are provided in one or more planes parallel to two of the elongated surfaces. The waveguide combiner is configured to expand the pupil in a second direction perpendicular to the first direction. The first light pipe is disposed at an angle with respect to a waveguide combiner.

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