Prisms
Right-angle prisms
Right-angle prism mirrors are extremely versatile optical components, commonly used as individualprisms and components of optical assemblies. A beam of light entering the leg of aright-angle prism mirror will deviate by a nominal value of 90°, while precise rotation ofthe prism controls beam alignment. When light enters the hypotenuse of the prism,it is commonly called a Porro prism. In this configuration, a light beam will undergo 180°deviation that is invariant in the azimuthal axis, while precise adjustmentof the prism controls beam elevation.
| Name | Parameters |
| Material | K9/quartz/sapphire/Ge/CaF₂/ZnSe,etc. |
| Surface flatness | λ10 |
| Thickness tolerance | ±0.02mm |
| Dimension tolerance | ±1 Arc Seconds |
| Surface finish | 20/10 or better |
| Bevel | Protection bevel |
| Coating | As per customer's request |
Dove prisms
Doveprisms are actually right-angle prisms with their triangular tops removed. They can generate flipped, reversed images or rotary images, depending on the ray incidence directions. They can reverse images by 180°,so they are also called image rotators. When an image rotates around the optical axis of a Dove prism, its rotation angle doubles that of the Dove prism. In the case of limited space or a need foreasier installation, Dove prisms can replace retroreflector or right-angle prisms. Dove prisms have an unusual and very interesting characteristic, if you look through the prism and rotate it around a longitudinal axis,the image rotates through twice the angle through which the dove prism itself rotates.For optimal peformance, use dove prisms with collimated light.
| Name | Parameters |
| Material | K9/quartz/sapphire/Ge/CaF2/ZnSe,etc. |
| Surface flatness | λ10 |
| Thickness tolerance | ±0.02mm |
| Dimension tolerance | ±0.02mm |
| Surface finish | 20/10 or better |
| Parallelism | ±1 Arc Seconds |
| Bevel | 0.2mm x 45° |
| Coating | ±0.2% |
| Coating | As per customer's request |