Title:
【発明の名称】可変焦点と可変倍率と自動視差補正手段を備えた拡大眼鏡
Document Type and Number:
Japanese Patent JPH09506443
Kind Code:
A
Abstract:
The invention concerns a magnifying visual aid to be used as a magnifying glass. The magnifying glass according to the invention comprises an automatic and/or manual focusing arrangement, a device for manually adjusting the enlargement ratio and a device for automatic parallax correction according to the respective focal distance. If, during vascular surgery, for example, the working distance has to be changed owing to the situation of the various operating sites, the visual aid according to the invention takes account of this requirement owing to the possibility of automatic or manual adjustment of the focal distance and of automatic correction of the parallax angle. Consequently, an optimum optical configuration corresponding to each particular operation being performed is always ensured and, since the most advantageous ergonomic position can be selected in each case, it is possible to operate in a considerably less tiring manner than hitherto. Furthermore, the visual aid according to the invention enables the enlargement ratio at any selected working distance to be adapted to the particular requirements.
Inventors:
Offner Anton Geralt
Application Number:
JP51045795A
Publication Date:
June 24, 1997
Filing Date:
August 30, 1995
Export Citation:
Assignee:
Olympus Austria Gesellschaft Mbecher
International Classes:
G02B23/00; A61B19/00; G02B7/10; G02B7/28; G02B25/00; G02C1/00; G02C7/08; (IPC1-7): G02B25/00; G02B7/10; G02B7/28; G02B23/00
Attorney, Agent or Firm:
Kenji Mogami