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The OPT3101 device is a high-speed, high-resolution AFE for continuous-wave, time-of-flight based proximity sensing and range finding. The device integrates the complete depth processing pipeline that includes the ADC, timing sequencer, and the digital processing engine. The device also has a built-in illumination driver that covers most of the target applications. The device provides depth data that consists of phase, amplitude, and ambient measurements. The calibration subsystem supports phase-data calibration for inaccuracies resulting from temperature and crosstalk.
Designing Time-of-Flight (ToF) long-range proximity and distance sensor system requires some careful considerations for the optical sensors. Some frequently asked questions related to the optical sensors are listed below.
1. What are the guidelines for the selection of LED and Photodiode for the application?
2. If the photodiode half-angle is 60° (total 120°), can a mask be added to make the total angle to 50°?
3. Can spray paint be used as the inter layer of the metal ring for photodiode anti-reflection?
Please find attached the response to the above questions.
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