Request InfoGigahertz-Optik Inc.NEWBURYPORT, Mass., Feb. 7, 2011 — To measure luminous flux (lumens), color and spectral distribution of large-area LED solid-state and traditional type light sources, a large-diameter integrating sphere is commonly used. Gigahertz-Optik Inc.’s new ISD family of integrating spheres is designed for use with the BTS256-LED tester. The ISD-100HF-V01 39-in. 1000-mm-diameter integrating sphere is coated with proprietary ODP97 white diffuse barium sulfate coating. A bayonet mount on the detection port enables attachment of the BTS256-LED tester. 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