Request InfoLabsphere Inc.Labsphere Inc.’s TOCS (thermal/optical/electrical) LED measurement systems conform to IESNA LM-79 and LM-80 recommendations for LED characterization. To more easily meet new reporting specifications, the systems enable measurement of optical properties as a function of temperature and operating current using a single instrument to deliver accurate and reproducible LED measurements. Available in a range of integrating sphere sizes from 50.8 to 193 cm, the TOCS systems are designed for both 2pi and 4pi measurement geometries. 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