Right angle prisms are used to deflect a beam of light through 90 or 180 degrees. This can be used as component to create various optical devices. BK-7 can be used for a range between the visible and infrared light. fused-silica can be used for a range between ultraviolet and infrared light. JUKA offers a wide range of different materials and different degree of precision prisms.
| Beam Deflection Angle:Material: | 90°±3',180°±5'H-K9L/UV Fused Silica |
| Diameter Tolerance:Surface Flatness: | 0/-0.1λ/5 |
| Scratch/Dig | 60/40 |
| Clear Aperture:Bevel: | >90%0.2±45° |
| Coating:Lacquer: | AR OR BBARGT-7or equivalent |
There are many types of prisms, each having a particular geometry to achieve the reflections necessary to perform a specific imaging task. Reflecting prisms may invert, rotate, deviate or displace a beam. dispersing prisms produce spectral separation for spectroscopic applications or for tuning a laser output.JUKA offers many kinds of high precision prisms, please keep in mind that selection of the most suitable prism is primarily dependent on the application.
| Material | BK7 and Fused silica typically, Visible optical glass, Infrared optical glass. | |||
| Tolerances | Low precision | Standard Precision | High precision | |
| Glass Quality | nd | ±0.001 | ±0.0005 | Melt controlled |
| vd | ±0.8% | ±0.3% | Melt controlled | |
| Dimension Tolerance (mm) | ±0.20 | ±0.10 | +0.01/-0.01 | |
| Angle Tolerance (θ1) | 10 minutes | 3-5 minutes | 5 second | |
| Angle Tolerance (θ2) | 10 minutes | 3-5 minutes | 10 second | |
| Scratch-Dig | 80-50 | 60-40 | 10-5 | |
| Wave front | λ per 25mm | λ/4per 25mm | λ/20 per 25mm | |
| Clear Aperture | 80% | 90% | 100% | |
| Bevel | 0.2±0.10mmx45°or upon requirement | No bevel | ||
| Coating | Coating may be available by custom order | |||
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