Angular localization system, associated repositionable mechanical structure, and associated method
US10126114B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2016 |
| Grant date | Nov 13, 2018 |
| Priority date | — |
| Expiry date | Dec 17, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/783
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An angular localization system for determining an object's location includes a signal processor and three channels have a respective first, second, and third photodetector. The first channel images a first portion of an optical signal from which the first photodetector generates a first electrical signal. The second channel images a second portion of the optical signal onto a slow-varying optical mask having a strictly monotonic transmissivity along a dimension x. The second photodetector converts the second portion into a second electrical signal. The third channel images a third portion of the optical signal onto a fast-varying optical mask having a spatially-varying transmissivity having a same value at more than one value of x. The third photodetector converts the third portion into a third electrical signal. The signal processor is configured to determine, from each electrical signal, a respective signal amplitude, and determine the location parameter by comparing the signal amplitudes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.