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US 4,871,245 AGranted
Surgical microscope
AssigneeOlympus Optical Co., Ltd.
InventorsTomonori Ishikawa, Takashi Fukaya, Toshiyuki Tsunoda, Hiroshi Fujiwara
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AssigneeOlympus Optical Co., Ltd.
InventorsTomonori Ishikawa, Takashi Fukaya, Toshiyuki Tsunoda, Hiroshi Fujiwara
Estimating the term…
A surgical microscope arranging, so as to be insertable into and removable from an illuminating optical path for observation, a semi-transparent mirror capable of introducing illuminating light for photographing in a coaxial relation into illuminating light for observation or a totally reflecting mirror having such size as not to entirely interrupt the illuminating light for observation, in order to make it possible that compact size and low cost are attained, the amounts of illuminating light for observation and photographing are sufficiently secured, both the illuminating light are conducted along a common optical axis, and the illuminating light for observation is not interrupted even for a moment in photographing.
A surgical microscope comprising an objective lens, an illuminating optical system, an observing optical system, and a photographing optical system, the improvement comprising a light merging means capable of being selectively inserted, only during photographing, into an illuminating optical system for observation and an illuminating optical system for photographing so that part of illuminating light for observation and part of illuminating light for photographing are merged into a single light beam to be projected onto a region to be viewed through a common optical path.
Dependencies are inferred from the claim text.