Device for the measurement of the size of an eye pupil
US4007980A · kind A · utility
30Cited by
2References
15Claims
0Family size
Inventors
Key dates
| Filing date | Aug 19, 1975 |
| Grant date | Feb 15, 1977 |
| Priority date | — |
| Expiry date | Aug 19, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/117
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for measuring the size of an eye pupil, particularly with non-cooperating patients, has a body which contacts the eye and carries on it an illuminating light source, a series of light detectors and an optical system for collecting the divergent light from the illuminating source and directing such light towards the iris of the eye. A stimulus light source can also be included for directing stimulus light through the pupil and onto the retina.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.