Transparent flat-panel holographic display

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11226591
APP PUB NO 20210003968A1
SERIAL NO

16660777

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Abstract

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In a method for forming a holographic image, light is provided to a flat-panel holographic video display that includes waveguide elements that each have a light-guiding substrate and an array of transducers configured to produce a diffraction grating comprising surface acoustic waves. The grating causes the waveguide to outcouple light, focusing it to, or producing wavefront curvatures consistent with it having emanated from, one or more points, in order to form a holographic image. The transducer array may include a large number of densely packed, vertically-adjacent transducers for each hogel for full parallax or may include a small number of vertically-adjacent transducers and a cylindrical optical element for each hogel. The display may be edge-illuminated by a collinear multicolor source. The substrate exit face may have nanopatterned areas alternated with flat areas in order to create regions of optimal internal reflection next to regions of low reflection.

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Patent Owner(s)

Patent OwnerAddress
MASSACHUSETTS INSTITUTE OF TECHNOLOGYCAMBRIDGE MA 02139

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bove,, Jr V Michael Wrentham, US 26 361
Jolly, Sundeep Boston, US 4 55
Smalley, Daniel E Provo, US 8 303

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