Variable magnification image formation apparatus
US4531831A · kind A · utility
7Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 5, 1984 |
| Grant date | Jul 30, 1985 |
| Priority date | — |
| Expiry date | Jul 5, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosed is a variable magnification image formation apparatus wherein an image of an original is formed on a photosensitive member by the use of a zoom lens assembly of the type in which the focal length is changed by rotating a zoom ring about the optical axis and wherein the zoom ring is rotated by wire in synchronism with movement of the zoom lens assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.