Spectrometer apparatus
US5166755A · kind A · utility
Inventor
Key dates
| Filing date | May 23, 1990 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | May 23, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/2826
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spectrometer apparatus uses a spectrum resolving sensor containing an opto-electronic monolithic array of photosensitive elements, each preferably sub-millimeter in size and pitch, and a continuous variable optical filter, that is permanently aligned with the array. Polychromatic light passing through the variable filter is spectrally resolved in accordance with the local filter transmission function, and is incident upon the photosensitive elements in the array. The electrical output of each element in the array is thence a function of the local transmission function of the variable filter and the output of all the elements provides the spectral contents of the polychromatic light. High spectral resolving power is obtained by subtraction of the output signal of adjacent elements in the array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.