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GL PHOTOMETERS

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Photometers optimized for different applications

Explore a new selection of high-quality, precise photometric instruments with fast sample rates, high sensitivity, and laboratory-level V-lambda correction for various light measuring applications. A variety of photometer types designed for light measurement have been introduced thanks to the development team at GL Optic’s vast experience. Beginning with measurements of illuminance (lx) in a lab setting, moving on to quicker measurements of Luminous Intensity Distribution (LID) during gonio-photometeric testing, characterizing light modulation (including flicker), and concluding with dynamic on-site measurements on the roads. Choose the model that works best for your needs.

Faster photometry

Use our newest rapid photometer model, the GL PHOTOMETER 3.0 LS + Flicker, to experience a new level of quality in quick on-the-spot gonio-photometric measurements. When used with the GL Goniometer, this gadget can produce results up to ten times quicker than those obtained using the conventional point-to-point gonio measuring method. When in on-fly mode, this gadget accurately reproduces a luminous intensity curve for each plane by taking many thousands of measurements per second.

Light flicker measurements

Large levels of light flicker can be measured with the high-speed (125 kHz) photometer GL PHOTOMETER 3.0 + Flicker when used in conjunction with the GL OPTI SPHERE System. The most recent essential flicker metrics, such as VESA (Video Electronics Standards Association), JEITA (Japan Electronics and Information Technology Industries Association), SVM (Stroboscopic Visibility Measure), PstML, flicker frequency, flicker index, flicker ratio, SAM, and Mp (flicker perception), are easily obtainable through the PC program GL Spectrosoft.

Dynamic tests of road lighting

This class A luminosity photometer, the GL PHOTOMETER HSLx 2.0 WP, was created specifically for outdoor measurements. Its IP64 casing provides weather and dirt resistance. A “mobile laboratory,” comprising three or more pieces of equipment, can be established to facilitate the dynamic measurement of road illuminance in accordance with EN 13201:2015 regulations. This kind of equipment can be mounted on an automobile bumper or paired with a laptop, special software, and a trailer. Coordinate data is added by the GPS system for use with the Google Maps Geocoding API or a comparable service.

Class A photometers

The photometer’s spectrum response is exactly the same as the spectral sensitivity of the human eye. This reduces the typical miss-match errors in measurements of various light source types for this sort of equipment. On request, the Class-L version is provided.

Integrating sphere flicker measurements

The GL spectroradiometer in the integrating sphere measuring system can be supplemented by this rapid photometer. LED light flux and efficacy measurements are made possible by a GL spectroradiometer mounted on an integrating sphere of any diameter. The most recent industry-mandated flicker metrics, including flicker frequency, flicker index, flicker ratio, SVM (Stroboscopic Visibility Measure), PstLM, SAM (Stroboscopic Acceptability Metric), Mp (also known as LRC Flicker Perception), VESA (Video Electronics Standards Association), and JEITA (Japan Electronics and Information Technology Industries Association), are all measured by a GL PHOTOMETER 3.0 + Flicker plugged into the second port of a GL OPTI SPHERE.

Ecodesign directive EU 2019/2020 compliant

Beginning in September 2021, new minimum standards for flicker and the so-called stroboscopic effect will be implemented throughout Europe. Light modulation can be measured with GL PHOTOMETER 3.0 LS + Flicker, and the PC software GL SPECTROSOFT provides the most recent measures, including SVM (Stroboscopic Visibility Measure) and PstLM, as mandated by the current standards. You can comply with the most recent OLED and LED testing regulations in Europe by using this new GL Optic photometer.

GL PHOTOMETER 3.0 + Flicker Usage

2 in 1 high precision illuminance photometer with wide dynamic range & accurate flicker meter

In addition to standard photometry, the high-sensitivity, high-sampling-rate GL PHOTOMETER 3.0 + Flicker photometer can measure light flicker in great detail. Even the most difficult measurement jobs can be completed thanks to features such a large dynamic range (0,001–10 000 000 lx), spectral response uncertainty (f1′) of less than 3% (Class A), and cosine correction (f2′) of less than 1.5% (Class A).

Standalone fast photometer

One can utilize the new GL Photometer 3.0 + Flicker as a stand-alone photometer. It is ready for usage in several applications where an accurate measurement of surface illuminance is necessary. GL Spectrosoft offers intuitive control over it, or external software can utilize a specific API. The device is powered by the USB connection; thus, no other power sources or batteries are needed.

GL PHOTOMETER 3.0 LS + Flicker Usage

Enabling gonio On-fly measurements

A goniometer arm travels from point to point in a measurement grid and stops at each location to take a measurement in a typical goniophotometric measurement. It may take many hours, depending on the measuring grid’s selected density. Goniometer arms rotate at a steady speed from one extreme position to the next as measuring devices scan the light distribution coming in from a rotating DUT during on-fly measurement.

The GL PHOTOMETER 3.0 LS + Flicker accurately reproduces a photometric luminous intensity curve for every plane by taking thousands of measurements every second. You can complete a thorough scan of asymmetric street lighting with varied light distribution in less than half an hour, or you can complete a quick scan of an LED lamp in a matter of minutes. The results are obtained considerably faster.

Class A photometer

The photometer’s spectrum response is exactly the same as the spectral sensitivity of the human eye. This removes measuring inaccuracies from various light sources, which are common with this type of meter.

GL PHOTOMETER HSLx 2.0 WP Usage

Waterproof photometer for demanding applications

The Illuminance Photometer Class A, from GL Optic, is specifically made for outdoor measurements. Its IP64 casing provides weather and dirt resistance. In order to establish a mobile laboratory that complies with EN 13201:2015 standards for measuring the illuminance intensity of a moving roadway, three or more GL PHOTOMETERS HSLx 2.0 WP can be utilized. This kind of equipment can be mounted on an automobile bumper or paired with a laptop, special software, and a trailer. In order to enhance the photometric data, a GPS system like this one can be used to retrieve coordinates from the Google Maps Geocoding API or any comparable service.

The spectrum sensitivity of the GL Photometer HSLx 2.0 WP (V-lambda class A, cosine correction class A) is exactly equal to that of the human eye. GL SPECTROSOFT provides straightforward control over it, or external software can utilize a specific API. The device is powered via a USB cable connection, so neither extra power sources nor batteries are needed. It has a universal photographic mount installed.

GL PHOTOMETER 3.0 TEC Usage

Class L photometer with thermally stabilized photodiode

A thermally stabilized photodiode powers the class L (DIN 5032-7:2017) photometer GL PHOTOMETER 3.0 TEC. In addition to routine photometry, extensive studies of light flicker are made possible by high sensitivity and a high sampling rate (125 kHz). It is ready to function with a stray light-eliminating tube in goniometric measurements. Optical components that are in charge of cosine correction are not used in this configuration. This device has a direct USB connection to the PC and can be controlled by external software via a specific API, or GL SPECTROSOFT.