Acceptance Angle: An Often-Asked Question With a Not-Straightforward Answer - Sequoia Scientific

Acceptance Angle: An Often-Asked Question With a Not-Straightforward Answer - Sequoia Scientific

When designing a transmissometer or a laser diffraction-based sensor for particle size analysis, an important consideration is the beam acceptance angle. A transmissometer will measure a – generally small – portion of the forward scattered light: The light that is scattered away from the beam but still within the acceptance angle of the detector. Thus, the transmittance is overestimated, resulting in an underestimated beam attenuation coefficien…