Miniature microscope objective for an array microscope
US6950241B1 · kind B1 · utility
18Cited by
12References
52Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 8, 2003 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Oct 9, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A miniature microscope objective includes at least three or four miniature lenses including from object to image at least a first positive lens, a second positive lens, and a third lens. The numerical aperture (NA) is greater than 0.4 and no more than approximately 0.9. The magnification variation ΔM/M over red, green and blue wavelengths spanning 165 nm or more is less than 0.3% to 1.5%, an image size variation is less than a sampling distance, at least one lens has an aspheric departure, and the miniature objective includes at least one diffractive surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.