Opthalmometer
US4978212A · kind A · utility
5Cited by
1References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1989 |
| Grant date | Dec 18, 1990 |
| Priority date | — |
| Expiry date | Dec 21, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B3/107
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A binocular opthalmometer has rotatable imaging optics which provide an image of a referencing element (mire) to a binocular viewing assembly. The viewing assembly is held stable (horizontal) by referencing it to a fixed support or stand in which the rotatable optics are journaled. The referencing mechanism is provided by a shaft mounted for rotation about an axis radially spaced from the axis of rotation of the imaging optics and which is rotatably coupled at one end to the stationary support and at the other end to the viewing assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.