Device for reproducible positioning of optical surfaces
US6480347B1 · kind B1 · utility
5Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 14, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Sep 14, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/4133
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A plurality of magnets is provided in an illumination prism carrier of a transmitted light refractometer and a corresponding plurality of magnets is provided in a sample prism housing of the refractometer to align a light exit surface of the illumination prism relative to a sample surface of the sample prism and urge the optical surfaces together in an even and uniform manner. The magnets replace mechanical biasing arrangements for positioning the optical surfaces and function to consistently reproduce a measurement optical path in the instrument for improved accuracy and repeatability of measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.