Integrating spheres are very versatile optical elements, which are designed to achieve homogenous distribution of optical radiation by means of multiple Lambertian reflections at the sphere's inner surface. The primary radiation source can be located either inside the sphere or in front of the source's entrance port. In the latter case, only the optical radiation entering the sphere is relevant for the sphere's internal radiation distribution. As long as we restrict ourselves to those regions which are shielded from direct irradiation by the primary source and are thus only illuminated by reflections at other of the inner surface, the theory of the ideal integrating sphere leads to two important conclusions:
Fig. V.1. Integrating sphere used as a standard source for optical radiation. Multiple Lambertian reflections inside the sphere result in a homogenous radiance and exitance distributions at the sphere's exit port.
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Here's The Problem:
As an applied optics professor at university you would like to set-up an optical properties of materials experiment in your lab course to demonstrate single and double beam reflectance and transmittance measurement of various samples with different thicknesses at both +/- 8-degree and 0 degree geometries. Space and budget are limited so a compact device with maximum flexibility would be ideal.
Here's The Requirements:
Here's The Solution:
Gigahertz-Optik's UPB-150-ART Universal R/T/ULS Integrating sphere with fifteen different reflection, transmission and self-absorption correction set-ups and full line of UPB-150-ART-ZXX accessory components.
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