Alignment features that allow for a liquid filled layered stack to assemble
US11385480B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2019 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Jan 30, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/16
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus and systems for an ophthalmic device having alignment features that aid assembly of a liquid filled layered stack are disclosed herein. An example apparatus may include first, second, and third optical elements arranged in a stack, with each optical element including alignment and separation features. The alignment and separation features may form an optic region and a dam region. The optic region encircles an optical axis of each of the optical elements. The dam region includes a first dam formed due to the first and second optical elements being in contact, and a second dam formed due to the second and third optical elements being in contact, wherein the dam region determines an optic region gap width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.