OPTICAL IMAGING DEVICE, SYSTEM, AND METHOD

摘要

PROBLEM TO BE SOLVED: To provide an optical imaging device having a diaphragm.

SOLUTION: An optical imaging device has: a plurality of optical elements arranged in a beam path; a diaphragm having an opening, a first region, and a second region that is extended inside the first region along a radial direction of the diaphragm; and a storage part. The storage part is arranged outside the beam path of the plurality of optical elements. The diaphragm is movable between a first position in the storage part and a second position in the beam path. The second region is extended outside along a direction vertical to the radial direction of the diaphragm, to the first region.

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