Light collector for optical contaminant and flaw detector
US4601576A · kind A · utility
93Cited by
6References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 9, 1983 |
| Grant date | Jul 22, 1986 |
| Priority date | — |
| Expiry date | Dec 9, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/112
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A two-stage light collector, including a first stage which admits a scanning beam and a second stage which is optically connected to the first stage and has a light detector therein. The first stage has a shape which re-images diffusely scattered radiation from a target on which the radiation impinges. The first stage directs light toward an entrance aperture in the second stage which indirectly reflects light toward the detector associated with the second stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.