Rhombic prism product
Rhombic Prism description
Rhombic Prism are used to display a beam laterally without changing it’sdirection.
They are coated to transmit part of the beam and produce two parallel and displaced emerging beams.Can be coated to produce a polarizing beam separator. Coating design are per customer’s design according it is detailed application
Rhombic Prism can displace a laser beam without change the image orientation, the input beam is totally internal reflected by two 45degree faces and goes out from the output face. Then, a lateral displacement is produced.
Higher transmission rate can be achieved by anti-reflective coating on the input and output faces. Rhomboid prism is always used in stereoscopic system and periscope system.
Currently we can make angle tolerance <5 arc seconds, total beam deviation <30 arc seconds. Large size is also available.
Rhomboid prism specifications
| Material | BK7 grade A optical glass |
| Dimension Tolerance | +0.0,-0.2mm |
| Clear Aperture | >85% |
| Surface Quality | 20-10 scratch and dig |
| Parallelism | < 5 arc seconds |
| Flatness | λ/8 (@) 632.8nm |
| Angle Tolerance | <1 arc minute |
| Protective Bevel | 0.25mm x 45° |
