Method for miniature particulate matter sensor by light absorption induced reflected light screening effect and particulate matter sensor

摘要

Disclosed is a method and a fine dust sensor that can reduce the size of a fine dust sensor by shielding reflected light using light absorption. A fine dust sensor according to an embodiment of the present invention includes a transmitter for transmitting light for measuring the concentration of fine dust; A light absorbing film that absorbs reflected light of a specific wavelength band; A light receiving unit that absorbs the reflected light of the specific wavelength band and receives scattered light by the fine dust; And a measurement unit for measuring the concentration of the fine dust based on data on scattered light received by the light receiving unit.