Pentagonal prism, which has two important features; 1. After the light is deflected by 90° ,the object image is neither turned left nor right nor upside down. 2. In the incident plane,even If the incldent ray and the incoming ray are not perpendicular, the included Anglebetween the outgoing ray and the incoming ray is 90° . The reflective surface of the prism must be plated with a reflective film.
Pentagonal prism can be used as spectroscope. Our company can provide pentagonal .prism for splitting light. The transmittance/reflection ratio is 20/80, 50/50, which can be customized according to customer requirements.