Position detector and mount therefor for a centrifugal analyzer
US4695164A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1985 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Sep 24, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/07
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A relative position detector has a photodetector arrangement for providing light and responding to the intensity of the light when reflected thereto. A member such as a cylindrical pin having a surface reflective of the light, convex to the photodetector arrangement, and movable relative thereto reflectively sweeps the light across the photodetector arrangement for responding thereto to produce a continuously-curving response indicating with its peak the position detected. The continuously-curving response can be differentiated in a peak detector for even more precise position detection. A mount which may be used for the photodetector arrangement has a support member and a member having a lower coefficient of thermal expansion slidably supported thereon, except for one fixed point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.