20 Oct 2021
Porro prisms are used for a 90° light path bend by using the hypotenuse face of the prism rather than the leg faces.They are similar to right angle prisms. This configuration produces a right-handed image since two reflections occur. The incident ray's direction is reversed when using a porro prism since the object enters and the image exits the same face. Specifications: Material:H-K9L,Optical glass,UVFS Dimension Tolerance：±0.1mm Angle Tolerance：< 3’ Surface Accuracy:λ/4 Surface Quality: 40/20 Clear Aperture：>90% Bevel: < 0.2mm×45° Coating : Custom Design Highly recommended Porro Prisms from Yutai Optics: H-K9L(BK7) Porro Prisms, Fused Silica Porro Prisms, Porro Prisms with AR coating.