AMICI prism (Direct Vision Prism)
The AMICI prisms generate dispersion of polychromatic light with simulaneous correction of divergence. All the dispersed beam output from the prism are parallel to the input beam. These Prisms consist of three prisms, which are cemented together Two of the three prisms (A prism in the left draft) are made of different material to the other prism (B prism in the left draft). Typical combination of materials are Flint glass for A and Crown glass for B.