SYSTEMS AND METHODS FOR EXTERNAL LIGHT MANAGEMENT
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United States of America Patent
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Issued Date -
Sep 19, 2024
app pub date -
May 23, 2024
filing date -
Sep 14, 2018
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Abstract
An augmented reality system includes a light source to generate a virtual light beam, the virtual light beam carrying information for a virtual object. The system also includes a light guiding optical element, the light guiding optical element allowing a first portion of a first real-world light beam to pass therethrough, where the virtual light beam enters the light guiding optical element, propagates through the light guiding optical element by substantially total internal reflection (TIR), and exits the light guiding optical element. The system further includes a lens disposed adjacent and exterior to a surface of the light guiding optical element, the lens comprising a light modulating mechanism to absorb a second portion of the real-world light beam and to allow the first portion of the real-world light to pass through the lens.
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