Porro Prism is composed of one large face and two roof faces which are mutually vertical. Beam enters the large face of the prism then hits on the roof, by total internal reflection twice from the roof, the beam exits again through the large face.

Specifications:

Material: H-K9L,H-BaK7
Dimension Tolerance: ±0.05 

Surface Quality: 40-20/20-10 

Surface Flatness: λ/4(Φ60） 

Angle Tolerance: ±3′