Tilt angle measuring device
US10323940B2 · kind B2 · utility
0Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2016 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | May 26, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C2009/066
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides a tilt angle measuring device, which comprises a discoid container for including a liquid forming a free liquid surface, a light emitting source for allowing a detection light to enter the free liquid surface, a photodetector for receiving the detection light reflected on the free liquid surface and a signal processing unit for detecting a tilt of the free liquid surface based on a detection signal from the photodetector, wherein the signal processing unit sets a detection light storage time of the photodetector so that an error incidence rate of the detection signal is a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.