GAITHERSBURG, Md., April 29 -- The National Institute of Standards and Technology (NIST) has developed a "rainbow source" that can be tuned across the entire visible light spectrum, from red to blue light. This unique source exploits recent materials advances in LEDs of different colors. By mixing exact percentages of LEDs at different wavelengths of visible light with the desired brightness, the optical properties of the source (such as the color) can be changed and tailored for a particular application. NIST's new portable "rainbow" source for calibrating color measurement...Read full articleRelated content from Photonics MediaArticlesIntegrated Photonic Quantum Sensing Takes Aim at Climate ResearchA NASA-funded collaboration will focus on advancing quantum sensing technology to enable new understanding of Earth and the effects of climate change. 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Similar to standard LEDs that emit visible light, IR LEDs are...Superluminescent Light-Emitting Diodes (LEDs)A superluminescent light-emitting diode is an emitter based on stimulated emission with amplification but insufficient feedback for oscillation to build up.White Light-Emitting Diodes (LEDs)Ultraviolet Light-Emitting Diodes (LEDs)CompaniesOpto Diode CorporationOpto Diode Corporation (Camarillo, CA), an ITW Company, delivers industry-leading sensors, photodiodes, IR detectors, photonic modules, assemblies, and LEDs. Available in standard and custom designs,...Photonics Buyers' GuideLaCroix Precision OpticsThe LaCroix name is synonymous with quality precision optics. 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