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Equilateral dispersing prisms are used for wavelength separation applications. The three sides are of equal length. A light ray is twice refracted passing through the prism with total deviation denoted by qd in the figure below. Deviation is a function of refractive index, and hence wavelength. Angular dispersion Dqd is the difference in deviation for light rays having different wavelengths and varies with prism orientation.
Material: BK7
Diameter Tolerance: +0.0/-0.2mm
Angle Tolerance: ±3 arc minutes
Flatness: λ/4 @ 632.8nm
Surface Quality: 60/40
Clear Aperture: >80%
Bevel: <0.2-0.5mm X 45°
Coating: Uncoated

Part No.  A=B=C(mm)  H(mm) 
DSP1-101 15 15
DSP1-102 25 25
DSP1-103 30 30