| 摘要 |
PROBLEM TO BE SOLVED: To prevent an optical member from being easily affected by heat generation of a drive unit of an optical head.SOLUTION: A scan module 9 is disposed on an upper side of a first plate 32, and a first motor 39 for moving the scan module 9 in a second scan direction and a second motor 49 for moving the scan module 9 in a first scan direction are disposed on a lower side of the first plate 32. In such a manner, the first motor 39 and the second motor 49 to be a heat source are installed on the opposite side of the side of the scan module 9 with the first plate 32 as a boundary, and a transmission amount of heat from the first motor 39 and the second motor 49 to the scan module 9 is reduced. As a result, decline of fluorescence detection accuracy due to thermal distortion of a detection optical system inside the scan module 9 is prevented. |
