180° refraction optical prism

Pechan prism

A Schmidt–Pechan prism is a type of optical prism used to rotate an image by 180°.It is a composite of two prisms, separated by an air gap. The “roof” section of the upper prism flips (reverts) the image laterally with two total internal reflections in the horizontal plane from the roof surface: once on each side of the roof. This latter pair of reflections can be considered as one reflection in the vertical plane. Both inversion and reversion together cause a 180° rotation of the image.
Its transmission wavelength is 2–12 μm, which is commonly used in infrared optical system or infrared spectrometer system. If the product is available or needs to be customized, please contact the sales department. For size available or customized size, pls contact with our sales for inquiry.

Other characteristics : 180° refraction