Overview: Rhomboid prisms are commonly used to displace a laser beam without changing its
direction. In imaging applications, rhomboid prisms will displace
the optical axis without inverting the image. The lateral
displacement is equal to the length of the prism (specified by
dimension D). Star Optic can offer high tolerance angles better than 5 arcseconds
and total beam deviation that keep the output beam parallel to the
input beam to within 30 arcseconds. Higher transmission rate can be
achieved by anti-reflective coating on the input and output
surfaces. They are ideal for demanding displacement applications such as
stereoscopic system and periscope system. General Specifications of Rhomboid prisms: | Material | BK7 | | | Dimension Tolerance | ±0.2mm | | Flatness | λ/4@632.8nm | | Surface Quality | 60/40 scratch and dig | | Clear Aperture | >90% | | Beam Deviation | <30 arc seconds | | Coating | Uncoated, Available |
Standard Products of Rhomboid prisms: | PN. | Material | A (mm) | C (mm) | D (mm) | Beam Deviation (arcsec) | | RBP05-30 | N-BK7 | 5 | 3.5 | 7.1 | 30 | | RBP10-30 | N-BK7 | 10 | 7.1 | 14.1 | 30 | | RBP12-30 | N-BK7 | 12.7 | 9.0 | 18 | 30 | | RBP20-30 | N-BK7 | 20 | 14.1 | 28.3 | 30 | | RBP25-30 | N-BK7 | 25.4 | 18.0 | 35.9 | 30 |
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