Optometry measuring scale
US10548473B2 · kind B2 · utility
23Cited by
0References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2015 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Jun 23, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N13/305
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an optometry measuring scale and method for determining a visual refraction value of an individual. According to the invention, the optometry measuring scale comprises a plurality of processed optotypes associated with a plurality of visual refraction corrections, wherein each processed optotype results from applying to a source optotype a determined image processing associated with a defined visual refraction correction, and an identification system for determining each defined visual refraction correction associated with each processed optotype.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.