| 摘要 |
In the present invention, a specimen is made to flow on a metal film on a prism, and excitation light (alpha) is emitted in a predetermined direction. By changing the position of a reflective member that reflects the excitation light (alpha), and adjusting the orientation of a reflective surface of the reflective member, the incident angle (theta) is changed while maintaining a state in which the excitation light (alpha) that enters the prism is reflected at a specific position on the metal film. The intensity of light to be generated on the metal film is measured, and the reflective member is positioned to match the position of the reflective member and the orientation of the reflective surface when a maximum amount of light is measured.
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