Apparatus and methods for calibrating optical measurements
US11965777B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 4, 2019 |
| Grant date | Apr 23, 2024 |
| Priority date | — |
| Expiry date | Jan 31, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/45
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus and methods are described for calibrating an optical system that is used for measuring optical properties of a portion of a subjects body. During a calibration stage, a front surface of a calibration object (300) is illuminated, light reflected from a plurality of points on the calibration object (300) is detected, and intensities of the light reflected from the plurality of points on the calibration object (300) are measured. During a measurement stage, the portion of the subjects body is illuminated, and light reflected from the portion of the subjects body is detected. Measurements performed upon the light that was reflected from the portion of the subjects body are calibrated, using the measured intensities of the light reflected from the plurality of points on the calibration object (300). Other applications are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.