NEWPORT 819C-SF-6 6" INTEGRATING SPHERE 4 PORT SPECTRAFLECT - SPOT

Small spot on the inside reflective material, Photograph five has a red oval around the spot, Photograph four is the photograph without the red to see the size of the spot. That would affect reflectivity at that spot. Unit would normally include a Newport 2.5 inch port plug 819M-PP-SF-2.5 from the factory, but it isn't present on this unit.

The 819C-SF-6 Integrating Sphere is a 6 inch, Spectraflect coated, 4-port integrating sphere. Its damage threshold is 1.7 J/cm2. The port at 90° is used for the user selectable detector. The port at 180° is for the incoming collimated beam. The port at the North Pole location (top) is for fiber optic taping to monitor wavelength. All spheres include a baffle between the 90° and 0° ports, which prevents direct illumination from the light source to the detector port.