US 11,656,081 B2
Integrated photonics optical gyroscopes optimized for autonomous terrestrial and aerial vehicles
Mario Paniccia, Santa Clara, CA (US); Qing Tan, Santa Clara, CA (US); and Mike Horton, Santa Clara, CA (US)
Assigned to Anello Photonics, Inc., Santa Clara, CA (US)
Filed by Anello Photonics, Inc., Santa Clara, CA (US)
Filed on Oct. 15, 2020, as Appl. No. 17/71,697.
Claims priority of provisional application 62/923,234, filed on Oct. 18, 2019.
Prior Publication US 2021/0116246 A1, Apr. 22, 2021
Int. Cl. G01C 19/72 (2006.01); G02B 6/12 (2006.01); G02B 6/293 (2006.01)
CPC G01C 19/727 (2013.01) [G01C 19/722 (2013.01); G01C 19/728 (2013.01); G02B 6/12007 (2013.01); G02B 6/29338 (2013.01); G02B 2006/12138 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An inertial measurement unit (IMU) enabling hybrid integration of mechanical and optical components for motion sensing in an autonomous vehicle, the IMU comprising:
a mechanical module attached to a packaging substrate for providing motion data including low-precision rotational measurement data for three axes of motion; and
three interchangeable optical gyroscope sub-modules co-packaged with the mechanical module, each optical gyroscope sub-module providing high-precision rotational measurement data for a respective axis of motion among the three axes of motion, wherein each optical gyroscope sub-module is based on integrated photonics;
wherein a first one of the three optical gyroscope sub-modules is attached on the packaging substrate along a plane of the packaging subject, and, a second one and a third one of the three optical gyroscope sub-modules are attached perpendicularly to the packaging substrate along two different planes orthogonal to each other such that all the three optical gyroscope sub-modules are aligned orthogonal to one another.