Lamp Measurement Sphere

Lamp Measurement Sphere


With lighting technology advancing to include larger and more complex devices, Labsphere has introduced the LMS-3M three-metre integrating sphere for complete optical characterisation of these larger lamps and luminaries. The sphere complies with IESNA LM-79 and LM-80 standards to deliver accurate and reproducible measurements of any lamp, up to 2m linear lamps and 30cm luminaries. The three-metre lamp measurement integrating sphere accommodates light sources positioned base up, base down, or longitudinally, to easily and efficiently measure virtually any lamp type, including fluorescents up to 2m in length. The design also allows for forward and partial flux measurements of test sources that are board mounted or heat-sinked. The larger sphere better integrates light for more reliable testing of a device’s photometric and colorimetric performance with measurements of Total Spectral Flux, Luminous Flux, Correlated Colour Temperature (CCT), Colour Rendering Index (CRI), and Chromaticity. Measurement data relies only on the test device’s true power, not on the size, shape, or spectral distribution. The near-Lambertian properties of the sphere’s Spectraflect® interior coating provide a uniform dispersion of light that integrates and reduces hotspots better than other available sphere coatings materials. Spectraflect exhibits reflectance values of 98% and is spectrally flat through the visible spectrum for higher optical efficiency on low lumen lamps. The LMS-3M can be customised with the software and accessories to fit testing needs.

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