Source adjusted colorimeter
US7561271B2 · kind B2 · utility
1Cited by
7References
9Claims
0Family size
Inventor
Key dates
| Filing date | Nov 1, 2007 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Nov 1, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/513
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A low cost calorimeter wherein a linear taper potentiometer proportions the current through sample and reference solid state light sources in a near logarithmic fashion. The position of the potentiometer slider is proportional to the absorbance of the solution in the sample path when the light intensity of the two paths is balanced. The light intensity may be balanced visually or with a simple electronic comparator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.