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Optical N-SF11 Wedge Prism

SF11 wedge prism is an optical component made of SF11 optical glass (a high-index heavy flint glass), featuring significant dispersion capability and a high refractive index. It is particularly suitable for optical systems requiring strong beam deflection or precise dispersion control.
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Comparison of SF11 wedge prism, fused silica wedge prism and BK7 wedge prism
Parameter SF11 Wedge Prism BK7 Wedge Prism UV Fused Silica Wedge Prism
Refractive Index 1.78 (high) 1.517 (middle) 1.458 (low)
Abbe Number (νd) 25.7 (high dispersion) 64.2 (medium dispersion) 67.8 (low dispersion)
Transmission Range 400nm-2.5μm 350nm-2.0μm 170nm-2.1μm
UV Applicability Not applicable Not applicable Excellent
Heat Stability Poor (high coefficient of thermal expansion) General Excellent
Cost Medium to high (containing heavy metals, with relatively complex processing) Low (economic) High (UV grade material)
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