Collection Sphere Systems

Avian Technologies collection spheres are designed for the general applications of photometry and radiometry. They may be used as cosine collectors, employing either their knife-edged port or another port with a transmissive diffuer as the collection port. With the addition of an internal source or using an external source, they can be used as uniform light sources that give a highly lambertain output.

Collection sphere systems include spun (6" or greater) or machined (diameter 4" or less) aluminum sphere with two ports at 90 degrees from each other along the equator of the sphere (drawing 1), a 1/4-20 mounting boss, and a mounting stand. The port sizes are 25 mm input and 12 mm detector on the 4",6", and 10" spheres and two 12 mm ports on the 2" (50 mm) sphere.

Coating Identifier

B: Avian-B coating: A barium sulfate based coating, similar to Munsell 6080 or Labsphere Spectraflect™. Primarily for laboratory usage. Effective wavelength range 300-1500nm
D: Avian-D Coating: A durable, high reflectance diffuse coating. Excellent for applications where durability or resistance to high humidity is required. Effective range 320- 1360 nm
F: Fluorilon-99W: reflectance material. This is not a coating but rather a machined thermoplastic material. Highly stable, both thermally and has great chemical resistance. Very high reflectance over entire effective range of <250-2500 nm
G: Avian Diffuse Gold Coating: Gold plated over a proprietary multi-layer metallic surface. Most effective in the 1.2-8u range (above 8u, it begins to lose its lambertain qualities) but special treatment can extend the effectiveness to >>25u. Reflectance of >94% over entire range.

See coatings and materials section for full technical information on Avian Technologies coatings and materials.