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  • Alignment Cube External angles Inspected Using Interferometer

    Corner Cube
  • Custom Alignment Cube Assembly Configurations

  • Various Alignment Cube Shapes and Sizes

    Hollow Retroreflector

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Alignment Cube

Typical Specifications

  • Material: Zerodur, Fused Silica, N-BK7, Stainless Steel, Custom
  • Catalog Sizes (mm): 12.7, 15.0, 19.0, 25.4, 31.8, 38.1; custom sizes also available
  • Dimensional Tolerance: ± 0.012 to ± 0.127mm, or custom
  • Clear Aperture Sizes: < 1mm to edges (85% central diameter is typical)
  • Surface Quality: 60-40 per MIL-PRF-13830_B
  • Bevels: 0.25mm – 0.50mm face width
  • Surface Flatness: λ/8 or custom
  • Angles: < 1 arc second to < 5 arc seconds
  • Coatings: Protective aluminum
  • Custom Alignment Cubes: Assembled with mounting hardware and/or threaded inserts

Optical alignment cubes are used to monitor and qualify systems where critical optical alignment is necessary. Precision Optical offers standard and custom sized optical alignment prisms with precision angles in several glass types as well as stainless steel. For extreme temperature applications, materials such as Zerodur and fused silica are optimal choices due to their low thermal expansion coefficients.

Our optical alignment cubes are polished on five surfaces and coated with a durable protective aluminum mirror coating. Upon request, the base of the prisms may be bonded to custom mounts or outfitted with threaded bushings. Alignment cube assemblies and custom prism geometries are also available.

 See our attached (PDF) catalog drawing for our high end alignment cubes.