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.
In this article, we describe a method for the measurement of large light sources in a limited space that efficiently overcomes the physical limitations of traditional far-field measurement techniques. The measurement is performed from within the near-field of the light source, enabling a compact measurement set-up, and generates a detailed near-field color and luminance distribution model that can be directly converted to ray sets for optical design and that can be extrapolated to far-field
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.
ProSource® enables optical system designers to fully exploit Radiant Source Model™ files (RSMs) of light sources and lighting systems. RSMs are the most accurate method for describing the near-field output of real light sources in optical and illumination design software because they contain full measurement information, including luminance images, from all viewing angles for the light source or lighting system. This provides full flexibility in analysis and in ray set generation.
ProSource® enables optical system designers to fully exploit Radiant Source Model™ files (RSMs) of light sources and lighting systems.
Luminous intensity data is critical for lighting design. Captured in photometric data files, luminous intensity data enables lighting designers to observe the total output and angular spread of a light source. IES and EULUMDAT (LDT) are the two standard file formats used for electronic transfer of photometric data. To create IES and LDT files, designers have their choice of systems.