High resolution objective lens system
US4206974A · kind A · utility
4Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1978 |
| Grant date | Jun 10, 1980 |
| Priority date | — |
| Expiry date | Aug 1, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B21/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A high resolution objective lens system for ultra microfiche designed for a magnification of 1/150x.about.1/120x and comprising a first cemented lens component consisting of a positive lens element and a negative lens element, a second positive lens component, a third positive lens component, a fourth negative cemented lens component, a fifth positive lens component and a sixth cemented lens component consisting of a negative meniscus lens element and a positive meniscus lens element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.