Sample inspection device for detecting fluorescence of sample

A sample inspection device for detecting fluorescence of a sample, the device comprising:

• a filter unit having a plurality of optical filters configured to transmit lights of different wavelength ranges;
• a light source unit configured to irradiate light to any one of the plurality of optical filters;
• a stage on which a sample is to be placed;
• a reflector oriented to reflect light transmitted through one of the plurality of optical filters to the stage and to reflect light emitted from the sample on the stage to another one of the plurality of optical filters;
• a detection unit configured to detect light emitted from the sample on the stage through light transmitted through the another one of the plurality of optical filters;
• an actuator for moving the filter unit;
• and
• a control unit configured to control the actuator to move the filter unit when the detection unit receives the light passing through the another one of the plurality of optical filters,
• wherein a wavelength range of light transmitted through the one of the plurality of optical filters and a wavelength range of light transmitted through the another one of the plurality of optical filters are different from each other.