Design by Data: Solutions for IES/LDT File Creation

This event was originally broadcast on June 20, 2017 and is now available for on demand viewing.

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Event Description:

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. Traditionally, goniophotometers have been used to generate very accurate photometric data, but these systems require very large lab spaces and expensive equipment. An alternative solution uses a near-field measurement system, which can generate equally accurate data with minimal lab space, increased speed, and lower cost.

In this 30-minute webinar, Radiant Applications Engineer Austin Piehl presents solutions for creating IES and LDT files and demonstrates the process of analyzing light measurement data and exporting these files using Radiant’s PM-NFMS™ Software. 


Presented by:

Austin Piehl
Applications Engineer II
Radiant Vision Systems

Austin Piehl is a Level 2 Applications Engineer at Radiant Vision Systems. As a member of a team of solutions professionals, Austin supports customer applications by addressing technical inquiries, building and maintaining Radiant’s technical support infrastructure, and training the company’s global customer base on best practices for light measurement using Radiant systems. Austin has dedicated the past three years at Radiant to developing his expertise in light measurement technology by building solutions from the ground up, and continues to educate new and existing Radiant users on how they can improve their measurement acquisition techniques through a fundamental understanding of light principles.

Austin received a B.S. degree in Physics from the University of Washington, Seattle, where he participated in extensive optics laboratory and CCD-based research courses in addition to his major requirements.


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