Illumination source for stained biological samples
US7561329B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2006 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Dec 29, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/086
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A microscope illumination system includes a light source having at least four LED light sources, each LED source emitting light within a different portion of the visible spectrum. Each of the at least four LED light sources may be independently controllable. The resultant light emitted from the at least four LED sources substantially approximates that from an incandescent light source. In one embodiment, the system includes at least one red LED, at least one green LED, at least one blue LED, and at least one yellow LED. Other color combinations are also possible. The illumination may be positioned to place a sample holder such as a slide within the optical path of the light source. The system further includes an optical magnification system for magnifying an image of the biological sample. This may include a camera or traditional magnification optics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.