Eye characteristic measuring apparatus
US7249851B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2002 |
| Grant date | Jul 31, 2007 |
| Priority date | — |
| Expiry date | Jul 10, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/1015
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An eye characteristic measuring apparatus can effectively and properly measure and display wavefront aberration of an eye regardless of the eye state. A first illumination optical system (200A) illuminates a small area on a retina of the eye by a first light flux from a first light source unit (100). A first reception light optical system (300A) leads a part of light flux reflected from the retina (61) to a first light reception unit (510) via a first conversion member (400) for converting the reflected light flux into at least 17 beams. A measurement data judgment unit, for example, judges whether the measurement data is appropriate for calculating the wavefront aberration according to a first signal from the first light reception unit (510). For example, when the measurement data judgment unit judges that the measurement data is not appropriate, a first correction unit causes to display a check correction screen which will be detailed later and corrects the data into appropriate measurement data. Furthermore, according to the measurement data judged to be appropriate or the measurement data which has been corrected by the first correction unit (603), a calculation unit calculates…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.