Self-focusing optical system for spectrophotometric measurements and the like, with optical fiber sensors
US5048958A · kind A · utility
2Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1989 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Mar 22, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/0208
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical system comprising a cavity for spectrophotometric measurements and the like with a first cylindrical refraction index gradient lens matched to an optical fiber. A second cylindrical refraction index gradient lens is provided disposed approximately coaxial to the first lens. The first and second lenses are spaced apart to delimit the cavity between opposite faces of the first and second lenses. A sample under test is positioned within the cavity. A reflecting surface is provided on the face of the second lens opposite said cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.