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zoth

03 Mar 2007 12:06



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Pierderile prin reflexie la interfata lentilei cu mediul:

R=((N1-N2)/(N1+N2))^2 unde:

N1=coeficientul de refractie al mediului
N2=coeficientul de refractie al sticlei

Pierderi tipice prin reflexie:

-suprafete neacoperite antireflex (uncoated)
sticla Crown 4%
sticla Flint 7%
quartz 3.5%

-suprafete acoperite antireflex MgF2 (MgF2 coated)
sticla Crown 1.5%
sticla Flint 0.5%
quartz 2%

-suprafete acoperite antireflex de banda larga multistrat dielectric (broad band multilayer dielectric coated)
sticla Crown 0.3%
sticla Flint 0.5%
quartz 0.3%