Optical sensor for opaque and non-opaque materials
US6687004B1 · kind B1 · utility
22Cited by
20References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 22, 1999 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Oct 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/4133
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensor is capable of detecting clear or opaque materials. The sensor can be disposed around a clear tube which carries a material such as liquid. The sensor utilizes a thin beam light source and a wide area photo detector. A window comparator determines the presence or absence of a material such as liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.