Optical reference, and a method of using same
US7626169B1 · kind B1 · utility
0Cited by
3References
13Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 5, 2008 |
| Grant date | Dec 1, 2009 |
| Priority date | — |
| Expiry date | Jun 5, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A detector calibration reference is disposed along a path of travel for radiation that extends from a radiation source to a radiation detector. The detector calibration reference has mutually exclusive first and second portions that are offset in a direction transverse to the path of travel, the first portion being substantially opaque to radiation from the source, and the second portion being substantially transmissive to radiation from the source. The detector calibration reference is moved relative to the path of travel in a manner so that the first and second portions become successively aligned with the path of travel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.