Liquid lens
US8599490B2 · kind B2 · utility
13Cited by
8References
27Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | May 21, 2010 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Feb 18, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A variable-focus liquid lens is provided. The liquid lens includes a membrane and a fluid. The membrane is made of a transparent elastomer, and the fluid fills a predetermined space to contact at least a lens surface of the membrane. The membrane and the fluid are respectively made of materials repulsive to each other, for example, hydrophilic and hydrophobic materials or oleophilic and oleophobic materials. Accordingly, a repulsive force between the fluid and the membrane can prevent the absorption or leaking of the fluid into/through the membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.