US 12,638,663 B2 · Folded optical system with input centration sensing and output angle sensing

Abstract

An apparatus includes a first mirror reflecting an input light beam as an intermediate light beam, a second mirror reflecting the intermediate light beam as an output light beam, an angle sensor measuring an angle of the output light beam, and a centration sensor measuring a centration of the input light beam. The apparatus further includes a controller configured to (i) based on measurements from the centration and angle sensors, determine an input path of the input light beam, (ii) based on the determined input path of the input light beam and a target output path, determine a target intermediate path, and (iii) based on the target intermediate path, determine target orientations of the first and second mirrors, such that the first and second mirrors, when steered to the respective target orientations, reflect the input light beam along the target output path.

Claims20

Dependent claims

An apparatus comprising:

a first mirror configured to reflect an input light beam as an intermediate light beam;
a second mirror configured to reflect the intermediate light beam as an output light beam;
an angle sensor configured to measure an angle of the output light beam;
a centration sensor configured to measure a centration of the input light beam;
and
a controller configured to
determine, based at least in part on measurements from the centration sensor and the angle sensor, an input path of the input light beam,
determine, based at least in part on the determined input path of the input light beam and a target output path, a target intermediate path, and
determine, based at least in part on the target intermediate path, a target orientation of the first mirror and a target orientation of the second mirror, such that the first and second mirrors, when steered to their respective target orientations, reflect the input light beam along the target output path.

6 more elements

A method comprising:

reflecting, by a first mirror, an input light beam as an intermediate light beam;
reflecting, by a second mirror, the intermediate light beam as an output light beam;
measuring, by an angle sensor, an angle of the output light beam;
measuring, by a centration sensor, a centration of the input light beam;
and
based at least in part on measurements from the centration sensor and the angle sensor, estimating an input path of the input light beam;
based at least in part on the determined input path of the input light beam and a target output path, determining a target intermediate path;
and
based at least in part on the target intermediate path, determining target orientations of the first mirror and second mirror, such that the first and second mirrors, when steered to the respective target orientations, reflect the input light beam along the target output path.

6 more elements

Dependencies are inferred from the claim text.

Folded optical system with input centration sensing and output angle sensing

Life of this patent

Folded optical system with input centration sensing and output angle sensing

Life of this patent

Abstract

Claims20