Infrared microspectrometer accessory
US5581085A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1995 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Mar 6, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N30/95
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention is an apparatus and method for infrared spectroscopic or radiometric analysis of microscopic samples of solids or liquids, combining external- or internal-reflection spectroscopy with visible-radiant energy viewing of microscopic samples by integrated video microscopy. This is an accessory to Fourier-transform-infrared spectrometers for the chemical analysis of microscopic samples in specular, diffuse, reflection-absorption (transflection), or internal-reflection spectroscopy. This apparatus combines an all-reflective, infinity-corrected optical system with an integrated, dedicated, video viewing system. The magnification optic is an all-reflecting optic designed to focus a collimated beam of radiant energy onto the sample, collect the reflected radiant energy, and (through the appropriate optics) present that energy to a detector means for spectral analysis. The modified Schwarzchild all-reflecting objective lens also provides a magnified image of the microscopic sample, which is detected by an integrated video imaging system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.