Inspection of transparent containers with opposing reflection means
US5233186A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1992 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | Jun 19, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/0314
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for detecting commercial variations in transparent containers such as glass bottles that includes a conveyor for directing containers along a path through an inspection station, and a light source disposed on one side of the path for directing light energy through a container at the inspection station. A light sensing camera is positioned on the same side of the conveyor path, and a retroreflector is positioned on the opposing side of the conveyor path opposite the light source and camera for reflecting light energy transmitted from the source through a container at the station back through the container onto the camera. Commercial variations are detected as a function of variations in intensity of light energy received at the camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.