Integrating sphere Eq.

Background


Area of circular cap


Shadow effect on ρ0 is simulated

D. G. Goebel, Appl.Opt. vol.6 no.1 125-128,1967

ρ: wall diffuse reflectivity 0.95
f: portion of port area equivalent to area of circular cap
ρ0: sample diffuse reflectivity

f0: portion of sample area to the circular top plane over the cap
L: wall luminance
Φ: input flux
M: sphere multiplier

 

Θmax=71deg

f=0.05

ρ0 uncorrected=0.95

Φi=0.234lm

Lwall=2.34cd/m2

R=0.15m

r=0.005m

tanΘmax=r/h

Vλ(658nm)=0.0701

Oxide Corporation

Speckle contrast Measurement System