Apparatus and method for projecting a pal lens in front of an eye
US12345956B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2023 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Feb 28, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/028
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for projecting a progressive addition lens in front of an eye of a user of the apparatus includes a first support for supporting the progressive addition lens in a PAL plane; a projection system configured for projecting without inversion the PAL plane onto a conjugated PAL plane, and generating a non-inverted projection of an object through the PAL plane onto a retina of the eye; wherein in the position of use of the apparatus the first support is configured to support the PAL lens such that the PAL plane is placed in a distal portion of the apparatus; the projection system is located between the PAL plane and the eye; a proximal portion of the apparatus is to be placed in front of the eye, and the eye is placed at a first distance from the conjugated PAL plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.