METHOD OF DEFINING BIOLOGICAL TISSUE PHOTOMETRIC PROPERTIES Russian patent published in 2011 - IPC G01N33/483 

FIELD: physics.

SUBSTANCE: light flux power passed though biological tissue specimen is measured in photometric chamber at two different flux reception aperture. Note here that, first, diaphragm is used to limit flow diameter to that equal to diameter d of specimen illuminating beam. Then, said diameter is increased to diameter D 5 to 10 times greater than first diameter d. Dissipation and absorption factors s and a are defined from formulas, respectively: s = p_∂+τ_∂ and a = 1 - s - τ_d, where τ_d is directed transmission factor defined as τ_d=Fτ_d/F₀, F₀ is initial power of illuminating beam, (mW), Fτ_d is measured power of transmitted flux with diaphragm d, τ_∂ is diffusion transmission factor defines as: τ_∂ =τ -τ_d, where τ is total (integral) transmission factor defined as τ=Fτ/F₀, where Fτ is measured power of transmitted flux, (mW), with diaphragm D, ρ_∂ is back scatter factor defined from for photometric invariant

EFFECT: high accuracy.

1 ex, 1 dwg