To provide a fluorescence reading apparatus capable of obtaining fluorescence detection images with a small background noise, even if a gel cassette manufactured from a material having a large self-fluorescence is used and the gel cassette used for the fluorescence reading apparatus.
In the fluorescence reading apparatus 10A, since a black urethane layer 25 is applied to a side face, on which a side face opening 24 of the gel cassette 7 (two plates 21, 22 for constituting the gel cassette) is formed, an excitation light from a semiconductor laser 2 is absorbed by the black urethane layer 25 and will not reach the gel cassette 7 (two plates 21, 22 for constituting the gel cassette); and the gel cassette 7 (two plates 21, 22 for constituting the gel cassette) will not emit fluorescence, even if two plates 21, 22 for constituting the gel cassette 7 are manufactured from a transparent resin with a large self-fluorescence such as polycarbonate, acrylate, etc.
SAITO SHIRO
Ikuo Yamanaka
Akika Okado
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