AN OPTICAL DETECTOR
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United States of America Patent
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Apr 25, 2024
app pub date -
Apr 11, 2022
filing date -
Apr 11, 2022
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Abstract
The invention concerns an optical detector (100) with a low-cost and efficient solution for the imaging lens in the receiver that is configured to better receive optical signals originating from wide viewing angles. The optical detector (100) comprises a ball lens (101), a photodetector (120), and a plurality of lightguides (103). The ball lens (101) comprising a first spherical surface (010) for receiving incoming light and a second spherical surface (020) for exiting incoming light. Each of the plurality of lightguides (103) has a light entry surface (104) and a light exit surface (105). The plurality of light entry surfaces (104) are facing the second spherical surface (020) of the ball lens (101) and the plurality of light exit surfaces (105) are facing the photodetector (120). The photodetector (120) and the plurality of lightguides (103) are arranged around an optical axis (001) of the ball lens (101).
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