Portable reflectance spectrometer
US4043668A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1975 |
| Grant date | Aug 23, 1977 |
| Priority date | — |
| Expiry date | Mar 24, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/3174
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A portable reflectance spectrometer is disclosed. The spectrometer essentially includes an optical unit and an electronic recording unit. The optical unit includes a pair of thermoelectrically-cooled detectors, for detecting total radiance and selected radiance projected through a circular variable filter wheel, and is capable of operating to provide spectral data in the range 0.4 .mu.m to 2.5 .mu.m without requiring conventional substitution of filter elements. The electronic recording unit essentially includes power supplies, amplifiers, and digital recording electronics designed to permit recordation of data on tape casettes. Both the optical unit and electronic recording unit are packaged to permit carriage as backpack items and thereby be manually portable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.