Tunable non-round spectacles with immersed lens shaper
US11815742B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2018 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | Jan 23, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B3/14
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to an optical device (1), comprising: at least a first lens (100) having an adjustable focal length, wherein the first lens (100) comprises a container (2) comprising at least one reservoir volume (90) and a lens volume (91) which are in flow communication via a channel (92) and filled with a transparent fluid (F), and wherein the container (2) comprises a stretchable transparent membrane (21) and a transparent lens shaper (22) that is immersed in the fluid (F) and connected to the membrane (21), so that the lens shaper (22) defines a curvature-adjustable area (23) of the membrane (21), and wherein the container (2) comprises a transparent back wall (30) facing the membrane (21), wherein the fluid (F) is arranged between the membrane (20) and the back wall (30). According to the present invention, the at least one reservoir volume (90) is covered by a wall (21), wherein a plunger (94) for interacting with an actuator part (e.g. an electropermanent magnet (80)) is arranged in the at least one reservoir volume (90) and connected to the wall (93) so that fluid (F) is pumped from the lens volume (91) into the at least one reservoir volume (90) when the plunger (94…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.