This optical system uses an optical phased array transmitter to provide depth information over a 2D snapshot with high resolution and reduced position ambiguity.


Rotationally Shift Invariant Optical System

Tech ID: UA18-207

Researchers at the University of Arizona have designed a highly sophisticated LiDAR system that uses a novel optical phased array transmitter in conjunction with a novel spherically shift-invariant (SSI) receiver system to provide depth information over a large 2D scene in a single snapshot. The field of view of the receiver is increased by the novel optical design to properly focus incoming light from a large set of angles. The system also improves the depth resolution and reduces position ambiguity.

Optical phased arrays have been used for increasing the speed and field of view of LiDAR systems, but the element to element spacing is too large, leading to reduced range and target position ambiguity. For some applications, SSI systems can increase the field of view, but at large angles, the focal point quickly moves away from the centerline.

Key Benefits

- Fast scanning
- Huge field of view
- High resolution with enhanced position accuracy


- Autonomous driving vehicles
- Remote sensing

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