Zoom lens
US4571032A · kind A · utility
13Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1981 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Dec 30, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B15/143503
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A zoom lens includes a zoom portion for forming a virtual image of an object lying between infinity to a very short distance always at a predetermined position and for varying the imaging magnification of the virtual image, and a relay portion including an erecting one-to-one magnification compound-eye optical system disposed between the zoom portion and an image pick-up surface for forming the virtual image of the object on the image pick-up surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.