Patent ID: 7190444
Filing Date: 2007-03-13
Classification: G01B

Abstract:
1. A method of measuring a field-of-view (FOV) of an optical sensor comprising the steps of: (a) uniformly illuminating a FOV of the optical sensor; (b) moving, at an angle of motion, a slit across the FOV and illuminating the optical sensor through the slit; (c) measuring an optical response of the sensor through the slit, at evenly spaced positions of the moving slit; (d) changing the angle of motion and repeating steps (b) and (c); (e) repeating step (d) for equally spaced angles of motion; and (f) constructing a two-dimensional map of the FOV of the optical sensor, after completing step (e); wherein the slit includes a longitudinal dimension greater than a span length across the FOV of the optical sensor.