Illuminating means for refractometer
US6195160A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1999 |
| Grant date | Feb 27, 2001 |
| Priority date | — |
| Expiry date | Oct 14, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0221
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An illuminator for use in a refractometer having a body housing, a sample cover assembly, a prism assembly and measuring assembly for measuring the composition and density of a substance. The illuminator includes a light source, a power source for operating the light source and an operating means for selectively activating the light source. The illuminator is located in the refractometer housing such that the light source is in a position on or about the prism assembly to illuminate a fluid substance to be measured. Light from the light source is introduced at a grazing incidence to a measuring surface of the prism. Phosphorescent material in the sample cover provides reticle illumination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.