Through-the-lens (TTL) loupes with improved declination angle
US9465235B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 26, 2014 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Nov 26, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B25/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Dental/medical/surgical loupes have an improved declination angle to reduce neck and back strain. Eyeglass frames are provided with carrier lenses having bottom edges. A hole is provided in each carrier lens, each hole having an outer periphery that extends below the bottom edge of the carrier lens, resulting in a pair of opposing pointed ends. A pair of ocular devices are cemented in a respective one of the holes, such that a portion of the ocular body also extends below the bottom edge of the carrier lens. Each ocular is then cemented or otherwise permanently affixed into position to achieve a desired declination angle. For added stability, a pair of holes may be formed into the body of each ocular, each pair of holes being physically aligned with the two opposing pointed ends of the carrier lens associated with that ocular.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.