Light scattering measuring apparatus utilizing a photodetector mounted on a rotary stand
US5113083A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1990 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Mar 26, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/499
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rotary stand (11) having a half-mirror (8) and a photodetector (10) mounted thereon, is continuously rotated around a first rotary shaft (A) passing through a sample (S), and set to a predetermined scattering angle. Simultaneously, a rotary reflecting mirror (7) is rotated at a predetermined angle to direct a reference li8ght (LR) to the half-mirror (8) at all times. The half-mirror (8) is also rotated at its own axis at a predetermined angle so that the direction of a scattering light (LS) at the light emitting side of the half-mirror (8) is identical with the direction of the reference lilght (LR). Accordingly, the reference light may be composed with the scattered light at an arbitrary scattering angle, enabling observation of the Doppler shift in the scattered light direction (FIG. 1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.