Microscope objective lens system
US4322136A · kind A · utility
5Cited by
5References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1979 |
| Grant date | Mar 30, 1982 |
| Priority date | — |
| Expiry date | Nov 30, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A microscope objective lens system by using a Gauss type lens system, in which the N. A. is large, the working distance is long, the image surface is flat over a wide angle of view and various aberrations are well corrected. The system comprises a first lens component comprising two or three single positive lenses, a second lens component comprising a cemented meniscus lens having its convex surface faced to the object side, a third lens component comprising a cemented meniscus lens having its concave surface faced to the object side, and a fourth lens component comprising a single positive lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.