Optical amici prism

Amici prism is a type of compound dispersive prism used in spectrometers. The Amici prism consists of two triangular prisms in contact, with the first typically being made from a medium-dispersioncrown glass, and the second a higher-dispersion flint glass. Light entering the first prism is refracted at the first air-glass interface, refracted again at the interface between the two prisms, and then exits the second prism at near-normal incidence. The prism angles and materials are chosen such that one wavelength (colour) of light, the centre wavelength, exits the prism parallel to (but offset from) the entrance beam. The prism assembly is thus a direct-vision prism, and is commonly used as such in hand-held spectroscopes. Other wavelengths are deflected at angles depending on the glass dispersion of the materials. Looking at a light source through the prism thus shows the optical spectrum of the source. Amici prism,also called roof prism,17.98mm,HK9L glass with AR coating,is a type of compound dispersive prism used in spectrometers. The Amici prism consists of two triangular prisms in contact, with the first typically being made from a medium-dispersion crown glass, and the second a higher-dispersion flint glass. Amici prism,also called roof prism,17.98mm,HK9L glass with AR coating,used on spectrometer mostly. 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:60-40 Theta 1=Theta 2=10 ' Roof symmetry is 0.15,can have 3 break-points,small than 0.1 Perpendicularity of 3 and 4 faces is 10' AR coating *) T>95%

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