Dove prisms are used as image rotators in various optical and mechanical systems. They are a truncated form of right - angle prisms and use total internal reflection (TIR) to produce an undeviated inverted image emerging from the output face.

When the prism is rotated around its optical axis, the image will rotate at twice the angular speed of the prism. Since the length of the prism is about four times its height, the incident light must be parallel or quasi - straight.

For applications where it is not possible to keep the hypotenuse clean enough for TIR, metal or dielectric coatings can be applied on the hypotenuse.

Chamfer: Protective bevel as needed

Substrate: N - BK7

Surface flatness: λ/8

Surface quality: 40 - 20

Materials: K9, BK7, fused silica, and other optical glass

Dimensional tolerance: ±0.05mm

Angular tolerance: <1 arcminute

Surface quality: 60/40

Clear aperture: >90%

Surface figure: <λ/4(25mm)@633nm

Chamfer: Protective <0.3mmx45°

Coating: AR, HR, metal coating