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3D sensing is a depth sensing technology that augments camera capabilities for facial and object recognition in augmented reality, gaming, autonomous driving and a wide range of applications.
- One way to sense 3D is using structured light. Coherent infrared light is transmitted onto an object with a structured pattern. The reflected light can be decoded to construct a 3D image.
- Another way to sense 3D is to use Time of Flight (ToF). A light source transmits a series of infrared light and the photon phase difference to the light bounced off an object is used to sense the proximity of an object.
Testing laserdiodes for 3D sensing applications
3D sensing is the measurement technology for enabling face and object recognition used in applications like autonomeous driving, augmented reality, and gaming. Vertical laserdiodes VCSELS are the basic tools used for this measurements. The laserdiodes sense the surrounding where the reflected light is measuremed by an image sensor. The application note describes how Keithley SMU's and Sampling DMM's can be used to characterize the LIV (light-current-voltage) characteristics