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1. (WO2017059379) BIDIRECTIONAL HOLOGRAPHIC LENS

Pub. No.:    WO/2017/059379    International Application No.:    PCT/US2016/055038
Publication Date: Fri Apr 07 01:59:59 CEST 2017 International Filing Date: Sat Oct 01 01:59:59 CEST 2016
IPC: G02B 27/01
G02B 5/18
Applicants: DAQRI, LLC
MULLINS, Brian
KAMMERAIT, Matthew
Inventors: MULLINS, Brian
KAMMERAIT, Matthew
Title: BIDIRECTIONAL HOLOGRAPHIC LENS
Abstract:
A device can determine a distance to an object. The device can use the determined distance to vary a focal length of a first adjustable element so that the first adjustable element directs light from the object into a first waveguide and onto a detector, and forms an image of the object at the detector. The device can produce an image, such as augmented content, on a panel. The device can direct light from the panel into a second waveguide. The device can use the determined distance to vary a focal length of a second adjustable element so that the second adjustable element directs light out of the second waveguide and forms a virtual image of the panel in a plane coincident with the object. The device can operate as an augmented reality headset. The adjustable elements can be phase modulators, or acoustically responsive material with surface acoustic wave transducers.