Vacuum spectrometer having a number of remotely positionable narrow wavelength detectors
US4320972A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 1980 |
| Grant date | Mar 23, 1982 |
| Priority date | — |
| Expiry date | Mar 31, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A spectrometer of the Rowland circle type having an annular steel table on which are supported a plurality of wheeled carriages. Each carriage has a remotely operable magnetic clamping arrangement to clamp it to the table. Each carriage also has a light entrance slit located in the focal plane, a photo-multiplier tube, and an optical fibre for channelling light from the entrance slit to the photo-multiplier tube. A positioning arm, pivotal about a central axis, is provided. The arm has at its free end a gripping arrangement which is remotely operable to grip any selected carriage. The arm is also remotely positionable to any position on the circle so that any particular carriage can be engaged; displaced to any desired new position; disengaged; and left clamped in the new position. An arcuate rule with an optical read head is also provided whereby the position of the arm is determined. The arm and the carriages are in an evacuated and thermally and structurally insulated housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.