A microscopy laboratory system for efficient instruction is disclosed. An adder circuit generates a filter output by adding filter cell outputs from each of the plurality of filter cells, and an inverse gain circuit adjusts the filter output in accordance with an inverse of the gain used to adjust the coefficients of the plurality of filter cells. The storage router maps between the workstations and the SCSI storage devices and implements access controls for storage space on the SCSI storage devices. In an outer peripheral region 12j of the opening end face 12, the sheet 6 is welded to the support body 11, forming a ring-shaped welded portion 15.