Apparatus for measuring properties of a laser emission
US4760257A · kind A · utility
5Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1986 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Aug 22, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J1/4257
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus is provided for measuring the numerical apertures of an optical fiber in the infrared region. The optical fiber is appropriately mounted in accordance with conventional testing standards. Infrared energy is transmitted through the optical fiber. At a predetermined distance from the end of the optical fiber, a conversion screen can be provided for transforming the emitted infrared energy into a lesser wavelength of energy. The energy distribution can be recorded with a detector compatible with the lesser wavelength energy whereby the numerical aperture can be computed from the recorded data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.