GL Spectis 8.0 Spectroradiometer

Advanced Spectroradiometer for high precision light assessment

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High Accuracy Light Assessment

The GL Spectis 8.0 is a unique, integrated Spectroradiometer featuring a high-sensitivity back thinned, cooled Hamamatsu CCD image sensor and a revolutionary Optical Stray Light Reduction* method which brings spectral light measurement to a new higher level than ever seen before.

The Spectis 8.0 is the only product on the market which uses the revolutionary OSR method / Optical Stray Light Reduction*/ , ensuring high accuracy of test results. In combination with the high sensitivity optical system integrated with the back thinned CCD image sensor, GL SPECTIS 8.0 offers many additional advantages when compared to conventional laboratory measuring devices.

Easy Operation

This USB controlled spectroradiometer includes Peltier cooled CCD Back-Thinned Hamamatsu sensor that communicates with our GL Spectrosoft PC interface to allow the user trigger measurements and analyze data on PC. Advanced report generator is available in PRO license for Spectrosoft

Precise Calibration

We place high value on calibration procedures and system design to increase the accuracy of our systems. Each spectroradiometer is individually calibrated and before the Absolute Spectral Calibration process, three pre-calibration stages are performed: (1) Wavelength calibration, (2) non-Linearity correction, and (3) Optical Stray-Light Rejection*

High Sensitivity

This unique light assessment system uses silica transmission grating delivering high resolution, increased throughput and sensitivity of the system. Additionally, cooling of the sensor allows to set longer integration times to support low signal level measurements. The perfect solution for scientific and laboratory applications.

GL Spectis 8.0 Usage

Measure all types of light sources

Different light sources like LED, fluorescent lamps or LCD displays require different optical probes. GL SPECTIS 8.0 can be combined with additional equipment to measure all types of light sources, displays, as well as LED light. Additional equipment is available for various measurement requirements. To achieve the extraordinary properties of its instruments, GL Optic in cooperation with world-class suppliers offers solutions which answer to the demands of professional markets.

Professional LED Characterization

The Spectis 8.0 spectroradiometer is an ideal solution for laboratory level light assessment and can be used with any of our integrating spheres and goniometer systems for advance measurements in accordance with CIE 127:2007 and CIE 025/E:2015. The high accuracy and resolution makes it compelling choice for any LED light measurement need.

GL Spectis 8.0 Features

The Latest Photonic Technology

The optical system of the GL SPECTIS 8.0 spectroradiometer uses the latest technology solutions available in spectroscopy. Mirror / grating / mirror spectrometer platform uses silica transmission grating and a back-thinned type CCD image sensor. The sensor and electronics are thermally stabilized and the software constantly monitors the base line level.

Transmission gratings provide supreme transmission properties and high diffusion efficiency. These characteristics allow to set a very short integration time which is important in high-accuracy light source measurements and can be a crucial factor in ultra-fast production process control applications.

The back-thinned type CCD Hamamatsu sensor offers very high quantum efficiency over a wide spectral range. This helps to achieve more accurate and low noise light measurements in the UV, VIS and NIR ranges. The high optical resolution of this platform makes it an ideal tool for narrow band light source measurements and fast light measurements in industry applications.

Photometric and Radiometric Calibration

An absolute spectral calibration is integrated into each spectrometer before delivery thereby enabling the accurate measurement of different absolute values such as lux, candela or lumen together with radiometric values depending on the measurement accessory installed.

Dark current compensation

The GL Spectis 8.0 spectroradiometer is ready to provide very accurate measurements in different conditions. A temperature sensor installed on the electronic board monitors changes in temperature and automatically compensates for any change in dark current level providing excellent measurement stability.

GL Spectis 8.0 Specifications

ApplicationHigh precision scientific and laboratory measurements
SensorBack-thinned type CCD image sensor with cooling (5°C)
Illuminance (lux)*3 lx – 150 000 lx
Spectral range**250 – 1050 nm
Number of pixels2048
FWHM~ 2.0 nm
Wavelength reproducibility± 0.2 nm
Integration time10 ms – 10 s
A/D converter16 bit
Signal-to-noise ratio2000:1
Stray light2*10 E-4
Radiometric accuracy**/***± 2 %
Uncertainty of color coordinates± 0.001
Automatic accessory detection
External power supplyInput: AC 100…240 V (50/60 Hz) 1.5 A
Output: DC 12V 10A
Operating temperature 5 – 30 °C
Dimensions [H x W x D]272 mm x 180 mm x 327 mm (± 3mm)
Weight 6.4 kg
Data formatXML
Fiber optic connectorOptional SMA905D
Operation Dedicated PC software
USB Cable
Power supply

* Dynamic range is spectrum related and should be calculated separately for any light source. Estimated dynamic range for typical 4000 K white LED.
Range estimated for optical system made to default specification. Alterations of that are often possible. Please consult technical support if you are looking for specific parameters.

** Spectral range of the sensor. Actual spectral range of system may be reduced due to limitations of used optical accessory.

*** Absolute measurement uncertainty immediately after calibration. The expanded uncertainty corresponds to a coverage probability of 95 % and the coverage factor k = 2.
Parameters valid in laboratory conditions 25deg C, relative humidity 45%.

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