Spectroscopic probe
US6809813B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2001 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Oct 23, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/0291
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spectroscopic probe includes a monolithic block (10) of transparent material and GRIN lenses (20, 22, 24). Light for illuminating a sample is delivered by an optical fiber (31), and light scattered by the sample is output by an optical fiber (33). The block (10) has opposing angled faces (12A, 12B), coated with a dichroic filter coating and a reflective coating respectively. A method for making blocks (10) is also disclosed, in which the coatings are first provided on a large sheet, and blocks (10) are then cut from the sheet using angled cuts. Since the coated block reduces the number of components required, the probe can be miniaturized, e.g. for use in an endoscope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.