| 摘要 |
A cell incubator having an observation unit to observe a cell incubation process comprises: a focus detecting unit to detect a focus position of an imaging optical system of the observation unit; an optimum focus selecting unit to select an optimum focus position based upon a plurality of images taken by moving the imaging optical system stepwise at a fine pitch along an optical axis direction from the focus position, based upon the focus position detected by the focus detecting unit; and a fluorescence observation unit to shoot a fluorescence image of the cells by moving the imaging optical system to the optimum focus position thus detected by the optimum focus selecting unit.
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