CIE 235:2019 PDF Download

CIE 235:2019 is a standard that outlines the procedures and techniques for the optical measurement of LED modules and light engines. LED modules and light engines are diverse products with unique properties, so they cannot be treated as single LED packages or complete lamps or luminaires. This standard provides guidelines for measuring photometric, radiometric, and colorimetric quantities of LED modules connected to DC or AC power supplies.

One important aspect emphasized in the standard is the use of a test-point temperature as a reference for measurements. This temperature is used to ensure consistent and comparable results across different tests. The standard is written primarily in English, with a brief summary available in French and German.