Method and device for calibrating a light intensity measurement device
US7864330B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 24, 2006 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Sep 29, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/0204
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
It is an object of the present invention to provide a method and a device for automatically calibrating a light intensity measurement device. The device (1) includes an optical switch (3) for switching a route of output from an optical intensity modulator (2), an optical attenuator (5) arranged on a first waveguide (4), a second waveguide (6), a light intensity measurement device (7), a control device (8) for receiving light intensity information measured by the light intensity measurement device (7) and controlling the signal to be applied to the optical intensity modulator (2), and a signal source (9) for receiving a control signal of the control device (8) and adjusting the signal to be applied to the optical intensity modulator (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.