Invention Grant
US07753522B2 Focusing device for ophthalmological appliances, especially for fundus cameras, and method for the use thereof
有权
用于眼科器具的聚焦装置,特别是眼底照相机的聚焦装置及其使用方法
- Patent Title: Focusing device for ophthalmological appliances, especially for fundus cameras, and method for the use thereof
- Patent Title (中): 用于眼科器具的聚焦装置,特别是眼底照相机的聚焦装置及其使用方法
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Application No.: US11792432Application Date: 2006-01-18
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Publication No.: US07753522B2Publication Date: 2010-07-13
- Inventor: Guenter Link , Detlef Biernat
- Applicant: Guenter Link , Detlef Biernat
- Applicant Address: DE Jena
- Assignee: Carl Zeiss Meditec AG
- Current Assignee: Carl Zeiss Meditec AG
- Current Assignee Address: DE Jena
- Agency: Frommer Lawrence & Haug LLP
- Priority: DE102005003440 20050121
- International Application: PCT/EP2006/000379 WO 20060118
- International Announcement: WO2006/077078 WO 20060727
- Main IPC: A61B3/10
- IPC: A61B3/10 ; A61B3/14

Abstract:
The invention is directed to a method and a device for opthalmological equipment for examining the fundus of the eye by means of an optical system and electronic sensors for image recording. The focusing device, according to the invention, for opthalmological equipment based on the nonmydriatic principle comprises a projection unit which projects at least one focusing mark in the infrared spectral region on a surface in the eye and a focusing unit, both of which are displaceable along the optical axis. The displacement carried out by electronically controllable adjusting elements is carried out simultaneously or individually based on the corresponding presets of a control unit that is provided. The necessary synchronization between the projection unit and the focusing unit can be ensured in a simple manner by means of the inventive solution. Accordingly, not only can the sequence of displacement paths be optimally adapted over the entire focusing range, but the tolerances of the optics assemblies can also be compensated individually in a simple manner from one device to another.
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