Ophthalmic devices and methods with application specific integrated circuits
US9259309B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2011 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Nov 16, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2250/0002
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Ophthalmic devices with dynamic electro-active elements offer variable optical power and/or depth of field that restore lost accommodation in individuals suffering from presbyopia or aphakia. An illustrative device senses physiological processes indicative of the accommodative response and actuates a dynamic electro-active element to provide the desired change in optical power and/or depth of field. The illustrative device includes two application-specific integrated circuits (ASICs) for processing the accommodative response and actuating the electro-active element: a high-voltage ASIC that steps up a low voltage from a power supply to a higher voltage suitable for actuating the electro-active element, and another ASIC that operates at low voltage (and therefore consumes little power) and controls the operating state of the high-voltage ASIC. Because each ASIC operates at the lowest possible voltage, the illustrative ophthalmic device dissipates less power than other ophthalmic devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.