Abstract
Development of neutron optical devices based on the refraction at the material interface is reported. For the focusing of the cold neutrons, biconcave lens and Fresnel type lens have realized and now they are used in the neutron scattering experiment, e. g. the main focusing device of Focusing geometry SANS. A neutron optical device composed of several hundreds of small material prisms with the size of 90 μm, called Microprism, is constructed using amorphous perfluoropolymer films to refract thermal neutrons.
