Folded optical design for eye-mounted cameras
US10488678B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2018 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Aug 3, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/57
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An eye-mounted device includes a contact lens and an embedded camera, which for convenience will be referred to as a femtocamera. The front aperture of the femtocamera faces away from the user's eye so that the image sensor in the femtocamera detects imagery of a user's external environment. The femtocamera optics has a folded optical path, which is advantageous for fitting the femtocamera into the limited space within the contact lens. In one design, the optics for the femtocamera is based on a two mirror design, with a concave mirror followed by a convex mirror. In an alternate design, the optics for the camera includes an imaging lens near the front aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.