Profile: Sphereoptics, LLC designs and produces precision standard & custom radiometric & photometric products. Our brands include Zenith«™ and Optowhite «™. We offer integrating spheres & components, light measurement systems & instruments, diffuse reflectance materials, luminance/radiance systems, and colorimeters & radiometers. We also provide optical calibration services, such as irradiance/illuminance, radiance/luminance, luminous flux, transmittance, reflectance, and responsivity.