Device for use in normalizing readings on a testing machine
US8173972B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2010 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Nov 22, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2223/076
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optic module verification device for normalizing between X photon counters, including a verification tray with X verification wells and a modular photon emitter in each verification well. Each photon emitter includes a spring, a Beta source disk, a scintillator disk adjacent the Beta source disk, and a neutral density filter over the scintillator disk, all of which are encapsulated in a cylindrical chamber with the filter adjacent an opening on one end of the chamber and the spring biasing the Beta source disk and the scintillator disk toward the opening. The device is periodically used for normalization, and may be updated when emitted photons fall below a desired level by replacing the scintillator disk and then determining a new normalized reference values for each photon emitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.