Patent ID: 9645167
Date: 2017-05-09
CPC Classifications: G01P

Claim:
1. An inertial sensor calibration method, comprising: a) providing a microelectromechanical (MEM) device including: a base; and at least one inertial sensor physically coupled to the base, and a fiducial component being operationally disposed on the at least one inertial sensor, wherein the at least one inertial sensor is characterized by a designed parameter value and an actual respective parameter value upon measurement, which is configured to generate a diffraction pattern upon illumination from a stabilized optical source; b) providing a stabilized optical source coupled to the base in such a manner that there is no relative movement between the stabilized optical source and the base; c) projecting a stabilized optical source output onto the inertial sensor and generating a diffraction pattern therefrom; d) detecting the diffraction pattern with one of an electronic image sensor and a light field detector; and e) using the detected diffraction pattern to measure the actual respective parameter value and to determine a relationship between the designed parameter value and the actual respective parameter value for calibrating the inertial sensor.