. . "BRIEF DESCRIPTION OF THE DRAWINGS [0018]FIG. 1 is a disassembled perspective view for illustrating the conventional spectrophotometer. [0019]FIGS. 2A and 2B are a disassembled perspective view for illustrating a spectrophotometer according to a first embodiment of the invention. [0020]FIG. 3 is an enlarged view for illustrating the manner of electrical connection between the photoelectric conversi" . .