Homodyne encoder system with adaptive path length matching
US11703318B1 · kind B1 · utility
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Key dates
| Filing date | Feb 24, 2022 |
| Grant date | Jul 18, 2023 |
| Priority date | — |
| Expiry date | Apr 2, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B9/0209
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A homodyne encoder system has adaptive matching of path lengths. Primary apertures receive light from a target. An optical spreader spreads apart the light passing through the primary apertures by at least a factor of two times a baseline separation of the primary apertures. The optical spreader includes a plurality of actuators for modifying the path lengths within the homodyne encoder system through the primary apertures to a detector. A focusing optic focuses the light from the optical spreader at the detector. The detector detects an image of the target with the light from the focusing optic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.