Optically decentered face shield
US8678582B2 · kind B2 · utility
2Cited by
8References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2011 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Jun 7, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of making a protective shield is provided. The method comprises molding an arcuate lens blank having an optical center displaced from an apex of the lens to a position near or beyond the edge of the protective shield. This reduces the object shift as wearer of the lens shifts gaze from a normal straight ahead line of sight to an activity specific line of sight that is vertically displaced from the normal straight ahead line of sight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.