Telecentric reflection head for optical monitor
US5699164A · kind A · utility
5Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Apr 4, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/57
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The use of a telecentric system allows for minimizing the changes in the measured radiometric quantity as a result of defocus or tilt of the object under measurement or of the detector. In a preferred embodiment, a telecentric illuminating system is provided, which illuminates an object from a source. A telecentric receiving system receives reflections from the object and relays them to a detector. In another preferred embodiment, a telecentric system is also described that is appropriate for radiance or radiant intensity measurements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.