Request InfoGigahertz-Optik Inc.To measure luminous flux, color and spectral distribution of large-area LED solid-state and traditional-type light sources, a large-diameter integrating sphere typically is used. Gigahertz-Optik Inc.’s ISD family of integrating spheres is designed for use with the BTS256-LED tester. The ISD-100HF-V01 1000-mm-diameter integrating sphere is coated with the proprietary ODP97 white diffuse barium sulfate. A bayonet mount on the detection port enables attachment of the BTS256-LED tester. The sphere is designed for 4-pi geometry measurements of omnidirectional light sources. 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