... test and high effective fast delivery best service prism Prism is a transparent optical element with flat, ... polished surfaces that refract light. specifications of prism:Material: BK7 glass or UV fused silicaDimension Tolerance: ... could offer right angle prism,wedge prism,penta prism,roof prism,triangular prism,cube prism dichroic prism,polyhedral prism,custom prism according to custom design. ...