PUPIL EQUALIZATION
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United States of America
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Nov 24, 2020
Grant Date -
Apr 4, 2019
app pub date -
Mar 1, 2017
filing date -
Mar 1, 2017
priority date (Note) -
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status (Latency Note)
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Abstract
An optical reflective device for pupil equalization including at least one or more grating structures within a grating medium is disclosed. The grating structures may have reflective axes that need not be constrained to surface normal. The grating structures are configured to reflect light about substantially constant reflective axes across a relatively wide range of wavelengths. The optical reflective device may reflect light towards a specific location, such as an exit pupil or eye box. Each grating structure within the device may be configured to reflect light of a particular wavelength at a plurality of incidence angles.
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