Agilent 81002FF Integrating Sphere
This used 81002FF Integrating Sphere has an outside diameter of 80mm and is lined with a highly diffusive material. The basic idea of an integrating sphere is that light enters the sphere and is diffused to uniform power density over the interior surface. A small portion of the total power exits the sphere through a small aperture to the detector in the optical head.
Sold only with 81628B or 81627B.