Produce data collector with enhanced LVF spectrometer
US6505775B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2000 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Apr 25, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/0262
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A produce data collector which includes a spectrometer which minimizes noise from scattered light and from wavelengths outside the operating range of the spectrometer. The produce data collector includes a light source for illuminating a produce item. The spectrometer obtains spectral information about the produce item in incoming reflected light from the produce item and includes a linear variable filter, a photodetector adjacent the linear variable filter, and an optical slit member above a primary surface of the linear variable filter which has a slit with a width sufficient to minimize scattering of the incoming light by interior surfaces of the linear variable filter. The produce data collector may additionally include a filter, such as an infrared filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.