×

Bioaerosol particle detector

  • US 10,267,723 B1
  • Filed: 04/05/2018
  • Issued: 04/23/2019
  • Est. Priority Date: 01/23/2018
  • Status: Active Grant
First Claim
Patent Images

1. A particle detector, comprising:

  • a. a housing defining a chamber;

    b. an air stream injection assembly, producing an airstream in said chamber having a transverse extent;

    c. a light source, producing a light beam that intersects with and crosses said air stream at an angle, and wherein said light beam is sized and shaped so that a transverse extent of said light beam has a uniform intensity over said air stream extent;

    d. a photon detection assembly, including an optical train of lenses, configured and positioned to accept an amount of light from said light beam, emitted by particles in said air stream, and to focus said emitted light onto a detection surface of a photon detector;

    e. a particle detection assembly, detecting particles in said air stream in response to input from said photon detection assembly; and

    f. a particle size estimation assembly, responsive to said photon detection assembly, which estimates size for each particle detected, based on number of photons detected by said photon detection assembly from said particle, as it crosses said light beam.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×