PROBLEM TO BE SOLVED: To observe an object efficiently in terms of time.;SOLUTION: An observation apparatus comprises: a first observation system that observes an observation object to acquire information associated with an observation area within the observation object; and a second observation system that observes the observation area identified on the basis of the information acquired by the first observation system. In the observation apparatus, an observation range for each unit time of the first observation system may be wider than that of the second observation system. Also, in the observation apparatus, the observation range of the first observation system includes a surface of the observation object, and the information may include the information to identify a spatial area in which the observation object exists.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2019,JPO&INPIT
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