Transparent waveguide display providing upper and lower fields of view having a specific light output aperture configuration

US9933684B2 · kind B2 · utility

Assignees

• Rockwell Collins, Inc. · US
• SBG Labs, Inc. · US

Inventors

• Robert D. Brown · Lake Oswego, US
• Alastair John Grant · San Jose, US
• Wyatt L. Hendrick · Encinitas, US
• Milan Momcilo Popovich · Leicester, GB
• James H. Stanley · Palo Alto, US
• Jonathan David Waldern · Diablo, US

Key dates

• Filing date: Oct 2, 2013
• Grant date: Apr 3, 2018
• Expiry date: Oct 2, 2033

Classification

• Technology area (CPC G): Physics
• CPC primary: G03H2260/34
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

One embodiment provides an apparatus for displaying an image comprising: a first optical substrate comprising at least one waveguide layer configured to propagate light in a first direction, wherein the at least one waveguide layer of the first optical substrate comprises at least one grating lamina configured to extract the light from the first substrate along the first direction; and a second optical substrate comprising at least one waveguide layer configured to propagate the light in a second direction, wherein the at least one waveguide layer of the second optical substrate comprises at least one grating lamina configured to extract light from the second substrate along the second direction; wherein the at least one grating lamina of at least one of the first and second optical substrates comprises an SBG in a passive mode.