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Patent Searching and Data


Title:
OPTICAL APPARATUS, ITS USAGE, AND METHOD TO BLOCK STRAY LIGHT REFLECTION IN ITS OBSERVATION LIGHT PATH
Document Type and Number:
Japanese Patent JP2008049165
Kind Code:
A
Abstract:

To provide an optical apparatus, especially an ophthalmoscope, and an eye testing method, which eliminates defects conventional technique has had.

An optical apparatus for testing eyes, or the optical apparatus comprises at least an objective lens arranged on an eye side, at least a light source for lighting the eye, and at least an optical element and/or at least an optical arrangement 104 arranged between the objective lens and the eye to be examined. As for the optical element and the optical arrangement, at least a spatially-resolved attenuating element 107 is arranged in an observation light path of the optical apparatus that generates an intermediate image in a plane examined in the eye, or a plane observed with the objective lens. The attenuating element 107 is spatially resolved so as to be switched into at least two clear states.


Inventors:
OBREBSKI ANDREAS
Application Number:
JP2007214707A
Publication Date:
March 06, 2008
Filing Date:
August 21, 2007
Export Citation:
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Assignee:
ZEISS CARL SURGICAL GMBH
International Classes:
A61B3/13; G02B21/00
Attorney, Agent or Firm:
Naotaka Kono
Kanji Arai
Eiichiro Shimazaki
Akiko Ishii