Topic Guides

Goniophotometer Selection Guide

A goniophotometer measures spatial intensity on an angular grid and exports IES/LDT/GLDF. For LM-79-style type tests, prefer a stationary-luminaire moving-mirror design such as GMS-5000.

Integrating Sphere Photometric System

Integrating-sphere systems measure total luminous flux and spectral colorimetry. Key choices are sphere diameter, coating (BaSO4/PTFE), spectrometer sensitivity, and integration with power supplies and electrical meters.

VAD Fire Alarm Effective Intensity & Light Distribution Testing

Fire VADs require effective intensity I_eff and C-x-y/W-x-y coverage volume. GMS-2000S with LUX-200F forms a dual-track spatial + temporal photometry chain covering GB 26851, EN 54-23, UL 1638 and related standards.

Medical Endoscope Cold Light Source Testing

Medical endoscope cold light sources are tested per YY 1081-2011 at the reference window for Ra, CCT, flux ratios and IR cutoff. SPM-8000Y with fibre and sphere covers colorimetry; IUT-500/PH-200 handles illuminance uniformity.