Abstract:
There is provided a particle detector that can increase a detection sensitivity to fluorescence emitted from biogenic particles. A particle detector for detecting biogenic particles includes a substrate having a principal surface and configured to collect the biogenic particles on the principal surface, a light emitting element configured to irradiate particles collected on the principal surface with excitation light, and a light receiving element configured to receive fluorescence emitted from the particles when the particles are irradiated with the excitation light from the light emitting element. An optical axis of the Fresnel lens and a ray direction of the excitation light intersect with each other. The principal surface is a mirror surface.
Abstract:
A cleaning tool for a collection member includes a brush unit and a mount portion. The brush unit includes a bristle and a woven portion into which a root of the bristle is woven so as to be held by the woven portion. The mount portion includes a placement surface on which the woven portion is placed and a securing portion to which the brush unit is bonded. In the cleaning tool for the collection member, the woven portion includes two first outer surfaces that are located at respective ends of the placement surface and that extend parallel to a direction in which the bristle extends. In the cleaning tool for the collection member, the brush unit is secured to the mount portion by bonding a region that includes at least part of each of the two first outer surfaces to the securing portion with an adhesive.