Ophthalmic apparatus
US7588336B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2006 |
| Grant date | Sep 15, 2009 |
| Priority date | — |
| Expiry date | Nov 20, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/18
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus that includes an intraocular pressure measurement part having a blowing unit, an optical characteristics measurement part, a main body having the above measurement parts, a measurement part shifting unit bringing one of the measurement parts to a measurable state, a working distance detecting unit having a projection optical system and a photo-receiving optical system, a control part judging whether to continue shifting the intraocular pressure measurement part to the measurable state based on a detection result and controlling the shifting unit based on a judgment result, and a detection unit directly or indirectly detecting whether light photo-received on the photo-receiving optical system is target light reflected from a cornea, wherein when the light is not the target light, the control part judges it proper to continue shifting and controls the shifting unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.