Illumination device with curved beam splitter for illumination an object with continuous diffuse light
US5842060A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1997 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Feb 14, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K13/0812
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An illumination device for illuminating an object to be observed, by a machine vision camera or the like for example, with a continuous diffuse wide angle light which is supplied along the observation axis of the machine vision camera. The illumination device contains a light source to illuminate a curved beam splitter and a diffuser is located therebetween. The diffuser is mounted inclined with respect to the observation axis and the curved beam splitter minimizes the height of the illumination source and facilitates supplying a more uniform field of illumination to the object to be observed. The inclined diffuser only indirectly illuminates of the object to be observed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.