Lidar, optical distance and time of flight sensors
3 days ago
- #Optical-Sensors
- #Time-of-Flight
- #LIDAR
- LIDAR and time of flight sensors measure distance by reflecting optical paths.
- Key parameters include optical distance measurement principle, scanning architecture, and optical aperture/power.
- Main optical distance measurement principles: dToF, iToF, and FMCW.
- dToF measures pulse reflection time; robust but limited resolution.
- iToF measures phase difference; high resolution but vulnerable to interference.
- FMCW uses frequency modulation; robust, long-range, but complex.
- Scanning architectures include single emitter + detector array, emitter array + detector array, and scanning mirrors.
- ams OSRAM offers integrated dToF modules and VCSEL illuminators for short-range applications.
- VCSELs and EELs available for long-range LIDAR with various configurations.
- Applications include autofocus, obstacle detection, gesture sensing, and in-cabin monitoring.