Machine for inspecting the bottom of glass containers
US5349435A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1993 |
| Grant date | Sep 20, 1994 |
| Priority date | — |
| Expiry date | Jun 8, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/90
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A machine for inspecting the bottom of a glass container having an opening at the top thereof comprising means for delivering a glass container to an inspection station, the inspection station including a two dimensional camera having an imaging surface for viewing the bottom of the glass container through the opening of the bottle, a light source for directing light through the bottom of the container towards the imaging surface, a computer for evaluating the viewed bottom imaged on the imaging surface, and means for reducing the dynamic brightness range for the viewed bottom image including a spatial modulator located between the imaging surface and the light source and the computer complimenting and transferring the image of the glass container on the imaging surface to the spatial light modulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.