TIS

Background


BRDF as a function of polar
scatter angle with T/s=59.

 

 

 

 

 

 

 

Close agreement between TIS_calculated =0.99
then
ρ diffuse=0.039

 

 

Without absorption
TAT=(1-2*f0) /(1+TIS) =0.46

Specification at 700nm
0.39 for BK7
0.52 for fused silica

TIS=scattered_power/specuarly_reflected_power

BRDF=differential_radiance/differential_irradiance

where R(θi) is

specular
reflectivity after
Stover.

Case for g=(4πσ/λ )2>>1, after Beckmann (p-82) and Stover (p-192),

Lambertian sample,BRDF=F=constant

Oxide Corporation

Speckle contrast Measurement System