Knife Edge Right Angle Prism / KRPB
The knife edge prism is polished to the sharp edges of the right angle surfaces and have no chamfers on these edges.
With knife edge prism having no coating (KRPB) by using light in the range of 0±5.7 degrees angle of incidence to the slope surface the total reflection critical angle is obtained.
Common Specifications
| Material | BK7 (Refractive Index nd=1.517) |  |
|---|---|---|
| Ridge Processing | Right-angle ridge: Knike edge (Not chamfered) Other ridge: Chamfered |
|
| Clear Aperture | 90% of Circle or Ellipse to Actual dimension for entrance and exit surface |
| Schematic | Outline Drawing |
|---|---|
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| Part Number | A=B | Surface Flatness of Substrate | Angle Tolerance | Surface Quality (Scratch-Dig) | |
|---|---|---|---|---|---|
| 90° | 45° | ||||
| KRPB-10-10H | 10mm | λ/10 | ±5″ | ±30″ | 10 - 5 |
| KRPB-10-4M | 10mm | λ/10 | ±5″ | ±30″ | 10 - 5 |
| KRPB-15-10H | 15mm | λ/10 | ±5″ | ±30″ | 10 - 5 |
| KRPB-15-4M | 15mm | λ/10 | ±5″ | ±30″ | 10 - 5 |
| KRPB-20-10H | 20mm | λ/10 | ±5″ | ±30″ | 10 - 5 |
| KRPB-20-4M | 20mm | λ/10 | ±5″ | ±30″ | 10 - 5 |
| KRPB-25-10H | 25mm | λ/10 | ±5″ | ±30″ | 10 - 5 |
| KRPB-25-4M | 25mm | λ/10 | ±5″ | ±30″ | 10 - 5 |
| KRPB-30-10H | 30mm | λ/10 | ±5″ | ±30″ | 10 - 5 |
| KRPB-30-4M | 30mm | λ/10 | ±5″ | ±30″ | 10 - 5 |
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