Labspheres LMS-3M three meter lamp measurement sphere

Written by Businesswire India | Mumbai | Updated: Jul 28 2010, 18:50pm hrs
With lighting technology advancing to include larger and more complex devices, Labsphere ( has introduced the LMS-3M three meter integrating sphere for complete optical characterization 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 meter 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 devices 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 devices true power, not on the size, shape, or spectral distribution.

The near-Lambertian properties of the spheres 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 is designed to measure a variety of lamps and luminaires on the same system with little adjustment. The standard sphere geometry accommodates 4pi measurement, and with optional aperture reducers, can easily be configured for 2pi measurement. Baffled intake and output ports and an ambient air temperature controller maintain and monitor the temperature inside the measurement environment, complying with Energy Star requirements. The new sphere size fully integrates with all Labsphere photometric and spectroradiometric systems and software so current system users may upgrade easily.

The LMS-3M can be customized with the software and accessories to fit testing needs. To speak to someone about your unique applications please contact Vikrant Mahajan, Labspheres USA-based Applications Engineering Manager, on e-mail: or telephone: +1 603 927 4266 (extension 2198).