Patent · US Active

System for and method of catadioptric collimation in a compact head up display (HUD)

US8634139B1 · kind B1 · utility

99Cited by

27References

20Claims

0Family size

Assignee

Rockwell Collins, Inc. · US

Inventors

Robert D. Brown · Lake Oswego, US
Kurt A. Stahl · Portland, US
Lu Bai · Beijing, CN

Key dates

Filing date	Sep 30, 2011
Grant date	Jan 21, 2014
Priority date	—
Expiry date	Mar 20, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG02B2027/0194
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A head up display can use a catadioptric collimating system. The head up display includes an image source. The head up display also includes a collimating mirror, and a polarizing beam splitter. The light from the image source enters the beam splitter and is reflected toward the collimating mirror. The light striking the collimating mirror is reflected through the beam splitter toward a combiner. A corrective lens can be disposed after the beam splitter.

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