Image forming lens system
US5568322A · kind A · utility
32Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1994 |
| Grant date | Oct 22, 1996 |
| Priority date | — |
| Expiry date | Mar 1, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B7/021
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming lens system is provided which has at least three lens groups, wherein diameters of outer most circumferences of all of the lens groups are identical, and wherein positions of at least two of the lens groups in an optical axis direction is determined by direct contact of the two lens groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.