Apparatus for detecting fine dust and microorganisms

An apparatus for detecting fine dust and microorganisms comprising:

• a sample chamber body comprising a sample chamber into which a measurement sample is introduced and of which the inside is implemented as a reflector, a light-incidence port through which incident light is incident, and a first light exit port and a second light exit port for emitting the incident light irradiated to the measurement sample;
• a light-transmitting unit which irradiates the incident light from the light-incidence port and blocks ambient light from entering the incident light;
• a first light-receiving unit which separately transmits, via a first path and a second path, exiting light emitted from the first light exit port, detects scattering light from the exiting light transmitted via the first path, and detects fluorescence light of the exiting light transmitted via the second path so as to detect fluorescence light of a predetermined wavelength band from wavelength bands irradiated from the light-transmitting unit;
• a diffused reflection reduction unit provided between the first light exit port and the first light-receiving unit to reduce diffused reflection light emitted from the first light exit port;
• and
• a second light-receiving unit which condenses in a Mie-scattering manner and transmits exiting light emitted from the second light exit port and detects fluorescence light of the exiting light emitted from the second light exit port so as to detect fluorescence light of the remaining wavelength bands not received by the first light-receiving unit from the wavelength bands irradiated from the light-transmitting unit.