Color compensation system for Abbe refractometer
US4181434A · kind A · utility
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1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1977 |
| Grant date | Jan 1, 1980 |
| Priority date | — |
| Expiry date | Jun 2, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/43
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The effect of angular errors or mismatching indices of refraction of color-compensation prisms of Abbe refractometers can be virtually eliminated by decentration of the lens used to image light on the refractometer reticle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.