Device for detecting emission light of micro-object
US7489401B2 · kind B2 · utility
17Cited by
1References
15Claims
0Family size
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Key dates
| Filing date | Feb 28, 2005 |
| Grant date | Feb 10, 2009 |
| Priority date | — |
| Expiry date | Dec 10, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/6454
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In the detection of fluorescence Lf emitted by a micro-object irradiated with an excitation light Le by a semiconductor light-detecting element 20, a converging microlens 62 for converging the excitation light Le elevating the optical density thereof and irradiating the micro-object with the light, causing the micro-object to generate fluorescence Lf due to two-photon absorption, is inserted partway along the light path of the excitation light Le. This enables the fluorescence Lf emitted by the micro-object to be detected with high sensitivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.