Optical zoom device
US11635551B2 · kind B2 · utility
0Cited by
0References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 2, 2018 |
| Grant date | Apr 25, 2023 |
| Priority date | — |
| Expiry date | Jul 29, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2205/0076
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to an optical zoom device (1) Optical zoom device (1), comprising a first lens assembly (2), and a second lens assembly (3) following the first lens assembly (2) in the direction of an optical axis (A) of the optical zoom device (1) so that light (L) can pass through the first lens assembly (2) and thereafter through the second lens assembly when travelling along the optical axis (A), wherein said lens assemblies each comprise a focus-adjustable lens (31, 32) as well as an electropermanent magnet (107, 207) or a shape memory alloy (120, 220) for actuating the respective lens (31, 32).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.