Roadway Photometrics
Recorded On: 07/30/2020
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About this Course
The IES offers Educational Webinars throughout the year, purposefully spanning a broad range of topics and speaker expertise. This was a live webinar, now available as an archived webinar and CEU course.
Description: Understanding how light is controlled and delivered is important in any application. In roadway applications, it can mean life and death. Ray will go through in detail how photometrics are developed for roadway lighting solutions via goniophotometer and how they applied within the calculation software, including TM-21 Reports. He will also provide a discussion and review of RP-8-18 Chapter 3 – Calculations.
Learning Objectives:
By the end of this course learners will be able to...
1. Understand the manner that the term "Roadway Photometrics" is used: Individual luminaire photometry, Application of photometry to demonstrate compliance with criteria.
2. Learn how lumen depreciation is estimated for LEDs with expected life exceeding the testing time: LM-80, TM-21
3. Understand the types of testing used to determine photometry of individual luminaires, LM-79: Integrating Sphere and Gonio-photometer
4. Identify applications of roadway photometry per IES RP-8 Chapter 3: Luminance, Illuminance, Veiling Luminance
5. Understand the limitations of photometry
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Raymond Yeager
Raymond Yeager was graduated from Pennsylvania State University with a Bachelor of Architectural Engineering Degree in 1978. He is a Professional Engineer registered in Ohio as well as a holder of the Lighting Certification from the National Council on the Qualifications for Lighting Professionals. Raymond has been an active member of the Illuminating Engineering Society. In the local section, he was the chairman of the education committee for several years and continues to teach courses sponsored by the local IES Section as well as sections of the IES around the country. At the national level in the IES society, he was a member of the Board of Directors as the Vice President of Educational Affairs and is currently involved on technical committees: Roadway Lighting Committee (Standard Practice sub-committee for RP8, Tunnel Lighting Sub Committee for RP22, and Chair of Measurement and Calculations Sub-committee) and the Committee on Lighting for the Aged and Partially Sighted.