DOE Publishes New Resources on Understanding IES TM-30

The U.S. Department of Energy (DOE) has created a number of useful new resources to help stakeholders understand IES TM-30-15, which describes a new method for evaluating light-source color rendition.

Created by an Illuminating Engineering Society (IES) task group to address the widely acknowledged limitations of CRI, which is simpler to use but less accurate, TM-30 encompasses several individual measures and graphics that complement one another and, together, provide a comprehensive characterization of how the light will affect the color appearance of objects.

TM-30 uses 99 color samples that come in all hues, both saturated and unsaturated, and were chosen to cover the range found in common consumer goods and natural objects. The three highest-level components of TM-30 are the Fidelity Index (Rf), the Gamut Index (Rg), and the Color Vector Graphic. Numerous sub-indices can provide more-detailed information about such things as the color fidelity of reds, the chroma shift of reds, and the fidelity of skin tones.

The new DOE resources on TM-30 include:

  • A fact sheet, “Evaluating Color Rendition Using IES TM-30-15”
  • A video featuring Michael Royer of Pacific Northwest National Laboratory, who chaired the IES TM-30 task group
  • An extensive list of FAQs on TM-30, featuring the answers to 65 questions related to its development, measures, application, and data.

All three resources are available on 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.

Nichia’s Tunable 757 receives rave reviews from industry leaders, including the coveted LpS Best Sustainability Technology Award. Nichia, the leader in and inventor of the high-brightness LED, announced its game-changing single LES, tuna... READ MORE

Innovative tunable white, mid-power LED enables luminaire manufacturers to improve colour tuning, shrink optics and fixture profiles, while enabling new design options. Nichia, the leader in and inventor of the high-brightness LED, announces i... READ MORE