| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an automatic analyzer that can achieve stable detection with high S/N ratio even for a minute amount of reaction liquid.SOLUTION: When analyzing an amount of a luminescent substance 112 included in reaction liquid 109 by detecting light from the reaction liquid 109 containing the luminescent substance 112 with a photomultiplier 111 through an optical window 102 to process detected output, an optical system 110 for optical transmission is disposed between the optical window 102 and the photomultiplier 111, the optical system 110 comprising: an entrance aperture facing the optical window; an exit aperture facing a light-receiving face of the photomultiplier 111; and a reflecting face that reflects incident light from the entrance aperture to propagate toward the exit aperture. Thereby, influences of noise induced by temperature from a flow cell 101 are decreased while suppressing decrease in a light quantity from the luminescent substance 112, and analysis with high S/N ratio is achieved.</p> |
