Exit pupil expander

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11927759
APP PUB NO 20230131587A1
SERIAL NO

18145416

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An exit pupil expander (EPE) has entrance and exit pupils, a back surface adjacent to the entrance pupil, and an opposed front surface. In one embodiment the EPE is geometrically configured such that light defining a center wavelength that enters at the entrance pupil perpendicular to the back surface experiences angularly varying total internal reflection between the front and back surfaces such that the light exiting the optical channel perpendicular to the exit pupil is at a wavelength shifted from the center wavelength. In another embodiment a first distance at the entrance pupil between the front and back surfaces is different from a second distance at the exit pupil between the front and back surfaces. The EPE may be deployed in a head-wearable imaging device (e.g., virtual or augmented reality) where the entrance pupil in-couples light from a micro display and the exit pupil out-couples light from the EPE.

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Patent Owner(s)

  • MAGIC LEAP, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kimmel, Jyrki Sakari Tampere, FI 8 37

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