Method and apparatus for applying a nanoliter quantity of liquid to a target object without solid contact
US5400420A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1993 |
| Grant date | Mar 21, 1995 |
| Priority date | — |
| Expiry date | Nov 2, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/382
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus for optically coupling first and second optical fiber segments comprises a base frame (10), a support (14, 18) for supporting the second fiber segment relative to the base frame in an orientation in which its central axis is aligned with a horizontal optical axis (72), and a first displacement mechanism (40-64) for supporting the first fiber segment in a coaxially aligned relationship with the second fiber segment. The first displacement mechanism is operable selectively to displace the first fiber segment along the horizontal optical axis. A cup (122) contains a bath of index-matching liquid and is supported at a position below the horizontal optical axis. A second displacement mechanism (108, 110) supports a dipper (114, 118) so that the dipper is displaceable along a path such that a drop retaining portion of the dipper is first placed within the cup and is then raised so that the drop retaining portion of the dipper lies on the horizontal optical axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.