MENU Open menu www.labspherestore.com Toggle search bar What can we help you find? Submit search CART Standards Color Standards Fluorescent Standards Wavelength Standards Diffuse Reflectance Standards Targets Permaflect Targets Spectralon Targets Spheres Components Port Plugs Adaptors Detectors Light Sources Port Adaptors Power Supplies Replacement Lamps Variable Attenuators Spectrometers Systems Goniometer / Goniophotometer Image Sensor Test Systems Laser Power Measurement Systems Light Measurement Systems Remote Sensing Calibration Systems Sunscreen Testing Optical Coatings and Materials Zenith Nav Menu 2 Nav Menu 3 Nav Menu 4 Nav Menu 5 Nav Menu 6 Nav Menu 7 Nav Menu 8 Home > Components > Port Adaptors > Near Cosine Diffusers $190.00 to $410.00 Product Code: AS-025XX-000 Size*: First, Select Size Reflectance Coating*: Then, Select Reflectance Coating Qty: Description The Cosine Diffuser Assemblies obtain a uniform view that resembles a near cosine collection. The diffuser consists of an opal glass diffuser in a metal holder which mounts onto the port frame. Light transmitted by the diffuser is scattered in a near-Lambertian distribution; i.e., the angular distribution of transmitted light approximates a cosine distribution.