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Dove prism has two applications. The main application is used as a rotator. It can rotate an image but without deviating the beam. And when the prism is rotated about the input parallel ray through some angle, the image rotates through twice that angle. It is very important that the application must be used with parallel or collimated beam and the large square reflective surface should be kept very clean. Another application is used as a retroreflector. For this application it perform as a right-angle prism.
Material: BK7 Grade A Optical Glass
Dimension Tolerance: +0.0, -0.2 mm
Clear Aperture: >80%
Flatness: λ/2 @632.8 nm
Surface Quality: 60-40 scratch and dig