Sell optical amici prism/roof prism

Description

Amici prism,also called roof prism,*7.*8mm,HK9L glass with AR coating,used on spectrometer mostly.

Amici prism,also call roof prism,usually used on spectrometer,the specification of Amici prism as picture indicated:
N1=N2=2,Delta N1,N2=0.5
N3=N4=2,Delta N3,N4=0.5
Surface quality:****0
Theta 1=Theta 2=*0 '
Roof symmetry is 0.*5,can have 3 break-points,small than 0.1
Perpendicularity of 3 and 4 faces is *0'
AR coating (MgF2 at **0nm) T>*5%