| 摘要 |
A scanning module (9) is disposed over a first plate (32). A first motor (39) of moving the scanning module (9) in a second scanning direction and a second motor (49) of moving the scanning module (9) in a first scanning direction are disposed under the first plate (32). In this manner, the first motor (39) and the second motor (49) being a heat source are disposed on a side opposite to a scanning module (9) side using the first plate (32) as a boundary, and thus a transferred amount of heat from the first motor (39) and the second motor (49) to the scanning module (9) decreases. As a result, accuracy of fluorescence detection is prevented from degrading due to thermal distortion of a detection optical system in the scanning module (9). |
