China Half Penta Prisms Penta Prisms Optical Prisms

Scratch & Dig:80/50~20/10Flatness:λ/2~λ/10Welding & Soldering Supplies Beam Deviation:6arc min ~ 30 arc secNumber of Polished Faces:3 Half-Penta prisms or Semipentaprisms are used to deviate the line of sight by 45° without inverting or reverting the image.Geographic Surveying Instrument The beam is reflected twice in the prism, with one reflection happening at less than thecritical angle, therefore the prism requires aluminized and over-coated with Inconel aSwitch nd black paintfor this surface to be usable in practice. Combining a Half-Penta Prism with a corresponding size Schmidt roof prism cerates a Pechan prism paiRoadway Safety r. The Pechan prism pair Other Safety Products will invert or revert the image while not deviating the line of sight.
These prisms are fabricated from N-BK7 etc
They can be AR coated on the incidence face.