... to request.Applications1. Luminous flux measurements on lamps for production and quality control, research, and development.2 ... standards3. Color measurement on light sources with colormeters.Lamp Positionvertical, horizontal.Structural FeaturesMulti interface on the sphere, ... Interior Sphere Paint coating inside adopts pure barium sulfateParameterReflectance p≈0.8, variation of ρ(λ)<1.5% in the visible ...