Immersion objective lens, fluorometric analyzer, and inverted microscope
US7619829B2 · kind B2 · utility
8Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2006 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Jul 6, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/33
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An immersion objective lens includes a front lens, a lens frame which supports the front lens, and a liquid preventive frame which is attached around the lens frame. The liquid preventive frame includes a liquid bulb holding wall which holds a liquid supplied onto the front lens. A distal end of the liquid bulb holding wall is located more inner in the front lens in a direction parallel to a center axis of the front lens than a distal end face of the front lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.