Apparatus and methods to measure optical density
US9176060B2 · kind B2 · utility
2Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2012 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Feb 18, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/2057
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides apparatus and methods for measuring the optical density of a fluid by measuring the light transmission through a reconfigurable optical path. The optical path is reconfigured by the deflection of an elastic membrane wherein the optical path length through the fluid is determined by the position of the membrane relative to a fixed surface. The optical density can be determined from two measurements with different optical path lengths through the fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.