| US 7,393,103 B2 | ||
| Operation microscope apparatus | ||
| Nobuaki Kitajima, Tokyo (Japan) | ||
| Assigned to Kabushiki Kaisha Topcon, Tokyo (Japan) | ||
| Filed on Apr. 19, 2006, as Appl. No. 11/406,378. | ||
| Claims priority of application No. 2005-124059 (JP), filed on Apr. 21, 2005. | ||
| Prior Publication US 2006/0238711 A1, Oct. 26, 2006 | ||
| Int. Cl. A61B 3/10 (2006.01) | ||
| U.S. Cl. 351—216 [351/214; 351/221] | 44 Claims |
| 1. An operation microscope apparatus, comprising:
an illumination optical system for emitting illumination light to an eye to be operated at a predetermined illumination angle;
an objective lens;
a front lens for condensing the illumination light from the illumination optical system to illuminate an interior of the eye
to be operated, the front lens being provided in a use position between the eye to be operated and a front focus point of
the objective lens in which a plurality of front lenses having different refractive powers are selectively located;
an observation optical system including an eyepiece, for guiding, to the eyepiece, reflection light of the illumination light
from the eye to be operated through the front lens and the objective lens;
input means for inputting identification information for identifying the front lens located in the use position, of the plurality
of front lenses; and
control means for controlling the illumination optical system to set an illumination angle of the illumination light to an
illumination angle corresponding to the inputted identification information.
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