Substance detection sensor, substance detecting method, and substance detection system having dual light source with optical scanning

A substance detection method of a substance detection sensor, comprising:

• a step of irradiating a detection area including a plurality of target areas with reference light having a first wavelength from a first light source through surface irradiation using optical scanning;
• a step of irradiating the detection area with first measuring light having a second wavelength different from the first wavelength from a second light source through the surface irradiation using the optical scanning;
• and
• a step of detecting a specific substance in the detection area based on reflection light of the reference light from the first light source and reflection light of the first measuring light from the second light source.

A substance detection system in which a substance detection sensor and an external connection device are connected,

• wherein the substance detection sensor includes
• a first light source that irradiates a detection area including a plurality of target areas with reference light having a first wavelength through surface irradiation using optical scanning,
• a second light source that irradiates the detection area with first measuring light having a second wavelength different from the first wavelength through the surface irradiation using the optical scanning,
• a substance detector that detects a specific substance in the detection area based on reflection light of the reference light from the first light source and reflection light of the first measuring light from the second light source, and
• an output that outputs information regarding the specific substance detected by the substance detector to the external connection device.