Device for measuring the amplitude of the tip of an oscillating capillary
US6931932B2 · kind B2 · utility
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6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 19, 2003 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | Dec 19, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/12042
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for measuring the oscillation amplitude of the tip of a capillary by means of a light beam comprises a light source and an opto-receiver and two apertured diaphragms that are arranged between the light source and the opto-receiver and which lie on a common axis. The apertured diaphragms are preferably formed by means of drill holes arranged on a common axis in side walls of a channel formed in a body. The two apertured diaphragms define the diameter of the light beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.