| abstract |
To provide a detection system for a detection target portion having excellent fluorescence detection sensitivity. Illumination means for illuminating a detection target site and illumination means for irradiating excitation light, a fluorescent material that emits fluorescence by receiving excitation light, and first imaging means for imaging illumination light reflected by the detection target site A wavelength region λ2 that can be imaged by the second imaging unit, at least including a second imaging unit that images fluorescence emitted from the fluorescent material, wherein the upper limit of the wavelength region λ1 of the illumination light and the excitation light irradiated by the illumination unit is λ1 Max . Λ2 MIN , where λ1 Max <λ2 MIN is satisfied. [Selection] Figure 1 |