Device for examining plankton

A plankton examination apparatus, comprising:

• a sub-pipe in which a transparent pipe unit comprising a light-transmitting member formed in some section of the sub-pipe and through which a sample comprising plankton moves;
• a light source unit which radiates light from a direction on one side outside the transparent pipe unit to a direction on an other side of the transparent pipe unit;
• a detection unit which receives light radiated in the direction on the other side outside the transparent pipe unit through the transparent pipe unit from the light source unit and generates an image of the plankton included in the sample flowing through the transparent pipe unit;
• an excitation filter installed between the light source unit and the transparent pipe unit in such a way as to transmit only blue-series light belonging to the light radiated by the light source unit and having a wavelength of 380 nm to 480 nm and to deliver the blue-series light to the transparent pipe unit;
• and
• a dichroic mirror installed between the transparent pipe unit and the detection unit in such a way as to transmit only red-series light which belongs to the light radiated by the light source unit and passed through the transparent pipe unit through the excitation filter and has a wavelength of 620 nm to 780 nm and to deliver the red-series light to the detection unit.