Touch the Flicker GL SPECTIS 1.0 T FlickerIntegrates the measurement of flicker parameters, colorimetric and photometric data - all in a high performance hand-held package WHAT IS FLICKER? • Flicker is the perception of temporal changes in the light output (luminance flicker) or color (chromatic flicker) of the light. • Part of a broader problem termed Temporal Light Artifacts (TLA) that include: - Stroboscopic Effect that appears when an object with continuous motion is illuminated with a flickering light source - Phantom array occurs when we make a saccade (fast eye movements) and the image of the fluctuating light source is transited across the retina WHY MEASURE FLICKER? • Flicker frequencies from a few Hz to 70-100 Hz can be perceived by humans. • Long exposure to light flicker causes headaches, migraines, increases eye strain and attention distraction. • Flicker impacts workplace comfort and effectiveness while reducing visual task performance and productivity. WHAT IS MEASURED? • IESNA has defined two primary quantities used to characterize flicker: - flicker index - flicker percentage • Fundamental flicker frequency is also commonly captured. HGL Optic products are made in Europe, sold and serviced on all continents.

TOUCH the FLICKER GL Spectis 1.0 T Flicker, the latest innovation from GL Optic, integrates the accurate measurement of light flicker with all the measurement quantities of the GL Spectis 1.0 Touch. Flicker quantification is accomplished with a combination of photodiodes, high speed analog circuits, and high sample rate analog to digital (A/D) converters. INTEGRATED FLICKER and ILLUMINANCE SPECTRORADIOMETRIC MEASUREMENT INSTRUMENT SPECTROMETER and PHOTODIODE MEASUREMENT GL Optic spectrometers are predominantly designed and preconfigured for light measurement. The B class cosine corrected measurement...

FLICKER + SPECTRAL PARAMETERS 0.1 Hz to 12.5 kHz 125 kHz (10x max. measured frequency) 0.1 lx - 15,000 lx flicker index, flicker percentage, dominant frequencies Visualization of signal as time series and in frequency domain (Fast Fourier Transformation - FFT) Additional metrics, as standards evolve, are incorporated as firmware updates FLICKER PARAMETERS Measuring signal frequency range Sampling rate Flicker illuminance Calculated parameters Spectral range Illuminance Irradiance Luminous flux (with GL OPTI SPHERE 48) Radiant power (with GL OPTI sphere 48) Luminance (with GL OPTI PROBE 1.0.10...