Beam expander and method of operating the same
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United States of America Patent
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Jun 25, 2024
Grant Date -
Aug 10, 2023
app pub date -
Apr 19, 2023
filing date -
Jul 22, 2020
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Abstract
A beam expander includes first and second optical elements spaced apart from each other, and a light diffuser having an angular aperture that diffuses incident light through the angular aperture, wherein the first optical element in-couples the diffused light such that light exiting the first optical element has a first cross-sectional shape and light having a second cross-sectional shape different from the first cross-sectional shape is incident on the second optical element, and the second optical element out-couples light incident from the first optical element.
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