Objective lens assembly
US4779967A · kind A · utility
12Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1986 |
| Grant date | Oct 25, 1988 |
| Priority date | — |
| Expiry date | Jul 1, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An objective lens system having a pair of plano-convex lenses disposed adjacent each other with the convex surfaces facing each other and aligned along common optical axis. A plurality of optical fibers surround the plan-convex lenses to convey light and illuminate an object to be viewed by the objective lens assembly. Adjustably positioned adjacent the second plano-convex lens is a field lens system including an elongate rod lens for conducting the intermediate image from the plano-convex lenses and to relay it to an ocular lens system for viewing by the user.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.