| 摘要 |
In the present invention, a specimen is made to flow over a metal film (55) on a prism (51), and excitation light (a) is shone in a prescribed direction. By changing the position of a reflective member (36) that reflects the excitation light (a), and adjusting the orientation of the reflective surface (36a) of said member, the angle of incidence (?) is changed while maintaining a state in which excitation light (a) that enters the prism (51) is reflected at a prescribed position. The intensity of the light that is generated at the metal film (55) is measured, and the reflective member (36) is positioned to match the position of the reflective member (36) and the orientation of the reflective surface (36a) when the greatest amount of light was measured. |
