IES Reveals New Method for Evaluating Color Rendition

The Illuminating Engineering Society (IES) has just published a technical memorandum, TM-30-15, that outlines a new system for evaluating the color rendition of light sources. While the International Commission on Illumination's Color Rendering Index (CRI) enjoys widespread use, its limitations are well recognized, and the need for a viable alternative is increased by the proliferation of SSL, which offers tremendous scope for spectral engineering and optimization.

Built on the progress made by many other researchers over the past two decades, and synthesizing many of their concepts, TM-30-15 addresses many of the CRI's limitations, providing more information with greater accuracy. With two main numerical parameters and other visualization tools – such as a color distortion icon – for better understanding the rendition of specific hues, it provides a more complete characterization of color rendition than a fidelity metric alone can. And with a greater number of samples (99) than the CRI, TM-30-15's values are harder to selectively optimize and should provide a better representation of average color rendering.

DOE will host two 90-minute webinars on TM-30-15 next month: one on September 15 that covers the basics, the development process, and the ongoing steps toward widespread adoption; and a follow-up on September 22 that focuses on the math and color science underlying the calculation engine, the derivation of the new set of 99 color evaluation samples, and why the improvements are important. Both webinars start at 1:00 p.m. EDT. To register or for more information, visit the DOE website.

Disclaimers of Warranties
1. The website does not warrant the following:
1.1 The services from the website meets your requirement;
1.2 The accuracy, completeness, or timeliness of the service;
1.3 The accuracy, reliability of conclusions drawn from using the service;
1.4 The accuracy, completeness, or timeliness, or security of any information that you download from the website
2. The services provided by the website is intended for your reference only. The website shall be not be responsible for investment decisions, damages, or other losses resulting from use of the website or the information contained therein<
Proprietary Rights
You may not reproduce, modify, create derivative works from, display, perform, publish, distribute, disseminate, broadcast or circulate to any third party, any materials contained on the services without the express prior written consent of the website or its legal owner.

Tokushima, Japan - 6 March 2024: Nichia, the world's largest LED manufacturer and inventor of the high-brightness blue and white LED, has started mass production of the new UV-B (308nm) and UV-A (330nm) LEDs in its popular 434 Series packa... READ MORE

New XLamp® S Line LEDs enhance growth, last longer, lower energy costs Horticulture and other forms of agricultural lighting require application-tuned ratios of spectral content, high efficacy and long lifetimes. Whether you are interested... READ MORE