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Lidar, optical distance and time of flight sensors
Fully integrated dToF modules and iToF VCSEL illuminators for short range applications. Laser sources for long range LIDAR systems.
FMCW has robustness and performance advantages compared to dToF, including long range, low emitter power, high immunity to ambient light and the ability to directly measure radial velocity. Longer range “flash LIDAR” systems use the dToF approach with a higher power VCSEL array or Edge Emitting laser source, plus larger apertures on each side. These compact and low power devices integrate a 940nm VCSEL (laser), a SPAD (Single Photon Avalanche Photodiode) pixel array, Time-to-Digital Converters (TDCs), and all the necessary signal processing to give a direct readout of distance over I2C.
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