System and method for a composite lens for a flow cytometer
US7110192B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2005 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Mar 3, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/144
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A lens system for collecting and focusing light emanating from an object has a cuvette housing the object and having a wall of thickness not greater than 1.5 millimeters; a plano-convex lens having a planar surface affixed to the wall; a sequence of at least three meniscus lenses, each meniscus lens having a concave surface toward the object and a convex surface, each successive meniscus lens receiving the light from the immediately preceding meniscus lens and having radii of curvature of its concave and convex surfaces greater than corresponding radii of the preceding meniscus lens; and at least one compound lens that may be a doublet lens or a triplet lens, the compound lens receiving the light from a last meniscus lens, wherein an image of a geometrical point on the object has a root-mean square spot size equal to or less than 63 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.