Knight Optical’s Deviating Penta Prisms - The Penta prism has two surfaces that reflect light

Knight Optical supply stock and custom deviation penta prisms that cover the visual and NIR range. Deviation prisms are an optical component that will redirect a light beam into another known angle relative to the incoming beam. The penta-prism is a deviation prism which is used in cameras with a movable mirror that bends the beam vertical onto the focus graticule. The penta-prism provides a 90° deviation of the beam from the focus plane and, via an eyepiece, the user can aim the camera along the same axis as the beam that is focused onto the detector, electronic or wet film. Deviations through other angles can be accomplished using, for example, abbe constant deviation, littrow, and wadsworth prisms. Read PDF for more info Material::N-BK7 or equivalent Dimensions::±0.1mm Angles::±1 arcmin Surface quality::<40-20 scratch / dig Coating::Anti Reflective and mirror coatings are available on request.