Imaging optical system
US12196935B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 28, 2022 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Sep 6, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B15/20
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An imaging optical system includes: sequentially from an object side, a first lens group G1 having a positive refractive power, a front lens group GF having a negative refractive power, and a rear lens group GR having a positive refractive power; wherein for zooming from a wide-angle end to a telephoto end, a distance between G1 and GF increases, a distance between GF and GR decreases, and G1 monotonously moves to an object side, G1 has at least one negative lens, GF includes a lens group having a negative refractive power of 1 or more, GR has a final lens group GL arranged closest to an image plane I side, and is fixed to I, and does not move for zooming and focusing, GL has a vibration reduction lens group movable in a direction including a perpendicular component with respect to an optical axis, and prescribed conditional expressions are satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.