Method and apparatus for examining food products by means of irradiation
US5026983A · kind A · utility
53Cited by
10References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 1989 |
| Grant date | Jun 25, 1991 |
| Priority date | — |
| Expiry date | Sep 28, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S250/91
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for examining food products for undesired ingredients by means of laser irradiation. A laser beam scans the food products according to a predetermined pattern. Variations in the intensity of the laser beam passing through the food products indicate the presence of undesired ingredients. This method is carried out by an apparatus which comprises two parabolic mirrors, a laser emitting a laser beam so as to originate from the focus of one of the mirrors and a detection means positioned in the focus of the other mirror. The food products are moved between the mirrors by conveyor belts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.