PHOTODETECTOR AND DISTANCE MEASURING SYSTEM
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United States of America Patent
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Issued Date -
Nov 9, 2023
app pub date -
Jun 30, 2023
filing date -
Mar 22, 2021
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Abstract
A photodetector includes a plurality of pixel circuits. Each of the pixel circuits includes an SPAD and a first element being a variable resistor or a switch. The first element has an end in one direction connected to one end of the SPAD. Ends of the first elements in another direction are connected together in parallel. The other ends of the SPADs are connected together in parallel. The other ends connected together in parallel are connected to a second resistor. A resistance value R2 of the second resistor is higher than a resistance value R1 of a resistive component at the end of each of the first elements in the another direction.
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