Abstract: A 360-degree Field-Of-View LIDAR is capable of delivering light to a target and detecting light reflected off a given target in order to determine the distance from the light source to the target over the entire 360-degree surrounding. The LiDAR has such capability because of the built-in light source, detector, and scanner which can steer the light source and the detector to cover the entire azimuthal angles. In some embodiments, the LiDAR has the unique arrangement of the light source and the detector which are fixed to a base while the rotating scanner and a flat optics contains motor, scanning mirror, and metasurface/flat optics to project the light source to its surroundings as well as receiving light from surroundings. In particular, flat optics perform the function of transforming the reference frame and beam steering in the vertical direction.

Abstract: A 360-degree Field-Of-View LiDAR is capable of delivering light to a target and detecting a fraction of the light reflected from the target to determine the distance from the light source/detector to the target placed at any point of a 360-degree panoramic field of view across various vertical elevation angles depending on the azimuthal angles. The LiDAR implementation allows the built-in array laser light source and an array of detectors to be scanned across the entire azimuthal angular range. The LiDAR implementation has the unique arrangement of the array of laser light sources, and the array of detectors affixed to a rigid base while the rotating periscope scanner contains a motor and mirror which can rotate in-plane to project the light source to its surroundings and receive light from surroundings. The system delivers a high frame rate, a high spatial (VGA-like) resolution, and a low power consumption system.

Abstract: A flaw scan system for detecting a location of first and second types of location specific anomalies on a storage disk of a hard disk drive comprising a write system, a read system, and first and second anomaly location systems. The write system writes a first set of bits to the storage disk in first and second data patterns. The read system reads the first set of bits from the storage disk. The first anomaly location system determines locations of the first type of location specific anomaly based on the first data pattern. The second anomaly location system determines locations of the second type of location specific anomaly based on the second data pattern.