In this article, we discuss unique measurement considerations for ensuring the quality of LED sources, and equipment for measuring LED displays, individual sources, and luminaires.
LEDs remain a pivotal light-emitting element in a range of lighting products and displays. For manufacturers of these devices, it is important to evaluate the performance of LEDs and LED-based systems in objective and meaningful ways.
In this article published by Global LEDs/OLEDs, Radiant surveys a number of measurement methods that generate either near-field or far-field models of the LED or luminaire and evaluate their strengths and weaknesses to guide us in selecting the right measurement method for the application.
The invention of the electric light bulb changed the world. It enables human activity at all times of day or night, and in all ambient light conditions. The first commercially available bulbs were released in 1880, manufactured by Thomas Edison’s company, the Edison Electric Light Company. The resulting demand for electric lighting propelled the building of vast electrical distribution infrastructure to bring power to homes and businesses in the following decades.
The SIG-400 (Source Imaging Goniometer®, Gen. 4) generates highly accurate near-field models of small light sources by capturing image data describing the spatial structure of the luminance and chromaticity of the light source from multiple viewing angles. Stored in industry-standard Radiant Source Model™ format, this data is readily available for both detailed analysis and subsequent export to all major optical design packages.This Spec Sheet features:
The SIG-SP2 Integrated Spectrometer is a full-featured spectrometer, configured specifically for use in light source measurement as part of the Source Imaging Goniometer (SIG). The SIG-SP2 is mounted on the SIG and delivers data directly to the SIG, increasing measurement accuracy and sensitivity. The SIGSP2 is available as an option to the SIG- 400 Goniometer.This Spec Sheet features:Product SpecificationsSoftware Requirements
The electromagnetic spectrum of sunlight makes life possible—without it, earth would be a barren, icy ball of rock. From the weather systems that produce our temperate climates to the photosynthesis in plants that yields oxygen and food, light serves many essential functions. Lately, new uses for various wavelengths of light have been discovered or have risen to new prominence in the realms of healthcare, medicine, and well-being.