Nucleic acid analysis device

A nucleic acid analysis device comprising:

• a first sample container and a second sample container each containing a nucleic acid sample;
• a camera that captures an image of the nucleic acid sample;
• an optical base on which the camera is disposed;
• and
• a stage that moves the first sample container and the second sample container,
• wherein the stage comprises a first translation mechanism, a second translation mechanism, and a rotation mechanism, the first translation mechanism being installed on an upper surface of the rotation mechanism and the second translation mechanism being installed on a lower surface of the rotation mechanism,
• wherein, in an observation state in which one of the first sample container and the second sample container is imaged by the camera, a translation direction of the first translation mechanism and a translation direction of the second translation mechanism are orthogonal to each other,
• wherein the rotation mechanism is configured to rotate such that, in a replacement state for replacing the first sample container and the second sample container, the translation direction of the first translation mechanism and the translation direction of the second translation mechanism are aligned so that the first translation mechanism and the second translation mechanism move the first sample container and the second sample container in the aligned direction,
• wherein, in the replacement state, the first sample container and the second sample container are completely exposed from the optical base, and
• wherein the rotation means comprises a rotating table, and wherein the rotation means is configured to rotate the rotating table by at least 180 degrees to switch positions of the first sample container and the second sample container.