Right-Angle Prism RAP0402
A right-angle prism is a triangular-prism-shaped object made from a transparent material, usually glass, with a cross-section that is usually an equilateral triangle. Light is refracted when entering the prism. Triangular prisms are often used in binoculars to shorten the viewing tube. In optics, a transparent body with a triangular cross-section is called a triangular prism. When a prism made from an optically denser medium is placed in an optically rarer medium, usually air, light entering a side face is refracted toward the base. Light enters one side face and exits another, with the emerging ray deflected toward the base, the third side face. The deviation angle depends on the refractive index, apex angle, and angle of incidence. White light is composed of different monochromatic components. A given medium has different refractive indices for different colors, which also propagate through it at different speeds. Consequently, the monochromatic components undergo different deviations in a triangular prism, separating white light into red, orange, yellow, green, blue, indigo, and violet: dispersion.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material | N-BK7 Grade A, optical glass equivalently |
| Material [available] | UV fused silica |
| Size | 25.4 mm × 25.4 mm |
| Dimension Tolerance | ±0.1 mm |
| Dimension Tolerance [available] | ±0.05 mm |
| Clear Aperture | >90 % |
| Degree Deviation Tolerance | ±1 arcmin |
| Flatness [632.8 nm] | λ/4 |
| Flatness [632.8 nm；available] | λ/10 |
| Surface Quality | 60-40 Scratch and dig |
| Surface Quality [available] | 20-10 Scratch and dig |
| Bevel face width [×45°] | 0.2–0.5 mm |
| Bevel face width [×45°；available] | 0.05–0.2 mm |
| Coating reflectivity R [Single wavelength AR；per surface；wavelength customer specified] | ≤0.25 % |
| Coating reflectivity R [Broadband AR；per surface] | ≤0.5 % |
Datasheet
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Supplier Information
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