05971540 is referenced by 57 patents and cites 19 patents.

Magnifying spectacles for surgical use have an automatic focusing device, a device for automatically altering the magnification factor and a device for automatic parallax compensation corresponding to the current focal length. During surgical operations, alteration of the working distance is commonly necessary due to the positions of different operating sites. Automatic adaptation of the focal length and the parallax angle allows optimum optical configuration to be reached without the need for the surgeon to use his hands. Focusing can be adjusted using a foot switch.

Title
Magnifying spectacles with variable focus, variable magnification factor and automatic parallax compensation
Application Number
648127
Publication Number
5971540
Application Date
March 6, 1998
Publication Date
October 26, 1999
Inventor
Anton Gerald Ofner
Vienna
AT
Agent
Walter C Farley
Assignee
Olympus Austria Gesellschaft
AT
IPC
G02C 1/00
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