Patent ID: 8205988
Filing Date: 2012-06-26
Classification: A61B,A61F,G02B

Abstract:
1. A stereomicroscope, comprising: an illumination system including a light source configured to output an illumination light and an illumination diaphragm configured to interrupt part of the illumination light, the illumination system being configured to project the illumination light propagated through the illumination diaphragm to an eye; an observation system having an objective lens, and right and left optical systems each configured to guide a light reflected by the eye of the illumination light propagated through the objective lens; a first mechanism configured to move the illumination system in a lateral direction; and a head lens placed between the objective lens and the eye, wherein at the time of intraocular observation of the eye, in a state that an optical axis of the illumination system and an optical axis of the observation system are arranged so as to be nonparallel by the first mechanism and an optical axis of the head lens and an optical axis of the objective lens are arranged so as to be separate in the lateral direction, the illumination light emitted from the illumination system is caused to enter the eye via the head lens, and an intraocularly reflected light of the illumination light is caused to enter the observation system via the head lens.