Product DescriptionPrisms are transparent optical blocks having at least two flat polished sides inclined relative to each other, at precisely controlled angles, so as to deflect, deviate, and rotate beams of light as well as dispersing their wavelengths. There are many types of prisms, each having a particular shape to achieve the necessary reflections to perform a specific optical task.
Tower Optical’s prism capability includes Penta Prisms, Right Angle Prisms, Dove Prisms Roof Prisms, Corner Cube Reflectors, Anamorphic Prisms, Wedge Prisms and Polarizers called Glan-Taylor Prisms, Wollaston Prisms and Rochon Prisms.
For right angle prisms, Tower Optical offers three different quality standards: Standard Grade, High Grade and Laser Grade.
The basic specifications are shown below.
| Specification | Standard Grade | High Grade | Laser Grade |
| Material | BK7 grade A glass | BK7 grade A glass | BK7 grade A glass |
| Dimensional Tolerance | ±0.2mm | ±0.1mm | ±0.1mm |
| Flatness | λ/2 @ 632.8nm | λ/4 @ 632.8nm | λ/10 @ 632.8nm |
| Surface Quality | 60/40 Scratch/Dig | 40/20 Scratch/Dig | 20/10 Scratch/Dig |
| Angle tolerance | ±3 arc minutes | ±30 arc seconds | ±30 arc seconds |
| Pyramid Error | < 10 arc minutes | < 10 arc minutes | < 5 arc minutes |
| Bevel | 0.2~0.5mm x 45° | 0.2~0.5mm x 45° | 0.25mm x 45° |
These prisms are also available in UV grade Fused Silica as well as other material. Optical coatings are also available for AR, Mirror or beamsplitter applications.
We make custom versions of everything on this site. Send us your drawings or specifications and we will provide a quotation.