Patent · US Expired

Holographic optical combiners for head-up displays

US4950567A · kind A · utility

24Cited by

11References

30Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Dalen E. Keys · Wilmington, US
William K. Smothers · Hockessin, US
Albert F. Harrington · Claymont, US
Jacob Beutel · Hockessin, US
Scott R. Schicker · Logan, US
Dillon F. Scofield · Newark, US

Key dates

Filing date	Jun 22, 1989
Grant date	Aug 21, 1990
Priority date	—
Expiry date	Jun 22, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S430/113
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Optical Combiners are provided for use in Head-Up Displays. The Combiners have a refractive index modulation greater than approximately 0.001.

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