Multi-layer diffractive eyepiece with wavelength-selective reflector

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United States of America Patent

PATENT NO 10725223
APP PUB NO 20180052277A1
SERIAL NO

15683644

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An eyepiece for projecting an image to an eye of a viewer includes a waveguide configured to propagate light in a first wavelength range, and a grating coupled to a back surface of the waveguide. The grating is configured to diffract a first portion of the light propagating in the waveguide out of a plane of the waveguide toward a first direction, and to diffract a second portion of the light propagating in the waveguide out of the plane of the waveguide toward a second direction opposite to the first direction. The eyepiece furthers include a wavelength-selective reflector coupled to a front surface of the waveguide. The wavelength selective reflector is configured to reflect light in the first wavelength range and transmit light outside the first wavelength range, such that the wavelength-selective reflector reflects at least part of the second portion of the light back toward the first direction.

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Patent Owner(s)

  • MAGIC LEAP, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lin, Dianmin Los Altos, US 32 691
Schowengerdt, Brian T Seattle, US 314 17335
St, Hilaire Pierre Belmont, US 74 1617

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