Macrolens system for emission microscopy
US5500770A · kind A · utility
11Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1994 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Dec 30, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multiple lens element macrolens system operative as a single lens has a high light transmission value and a wide field of view of an object to be viewed. The macrolens system provides a long object working distance and an extended back focal distance to an image plane. An object group of lens elements is spaced by a substantial axial gap from an image group of lens elements. The gap and the working and back focal distances facilitate inclusion of various auxiliary components into an optical instrument which incorporates the macrolens system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.