2-meter Integrating Sphere

For direct measurement of the visible transmittance of large possibly nonuniform specimens we have an integrating sphere 2 meters in diameter. The theory and application of this sphere is described in the following two papers:

Transmittance Measurements in the Integrating Sphere, Jeffrey Kessel, Applied Optics 25 (1986) p 2752 (pdf)

Integrating Sphere Measurements of Directional Hemispherical Transmittance of Windows (pdf)

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