Illuminance / Irradiance
Optic probes for measuring luminance and radiance. Connect with any of our spectroradiometers.
Probes to measure illuminance or irradiance
There are different optical quantities and a range of different measurement geometries that require the use of dedicated probes. As a full line manufacturer, we offer a variety of optical probes for photometric and radiometric measurements that differ in spectral range, degree of cosine correction and a type of optic fiber.
Irradiance and illuminance probes are available for all our spectrometers, and designed for each system based on the spectral range and optical performance of the instrument.
Ready-set-go
Each complete set includes a measuring probe, a fiber optic cable, and adapter for a dedicated spectrometer. Includes calibration traceable to national laboratories.
Smart detection
All GL Optic Spectrometers include smart system of detection that automatically detects a new probe and loads the appropriate calibration file.
Made for everyday use
High accuracy and performance no longer also mean high complexity. Our solutions deliver reliable, repeatable results without needing highly specialized operators.
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GL OPTI PROBE 1.1.10 Illuminance Usage
Submersible illuminance/irradiance probe for underwater measurements. The set includes a measuring probe, polymer fiber optics as well as an adapter with a coder for a GL SPECTIS 1.0 series spectrometer. The set can be spectrally calibrated only in a range above 400 nm. N.A.= 0.22.
This GL OPTI PROBE measures the amount of luminous flux incident upon a surface per unit area, measured in optical quantities of illuminance [lx] or PAR energy [W/m²].
GL OPTI PROBE 1.1.10 Illuminance Specifications
| Measuring point diameter | 7.9 mm |
| Spot size | – |
| Spectral range | 400-730 nm (may be further affected by spectrometer) |
| Measuring probe size | 44 mm x 62 mm x 14 mm |
| Type of fiber optic cable | Polymer |
| Fiber optic cable diameter | ⌀1.0 mm |
| Fiber optic cable length | 1.5 m |
| Measurement uncertainty | (x,y) +/- 0.002 |
Note: Instrument, firmware and software specification are subject to change without prior notice. All information included in GL OPTIC datasheets and product information available in any form are carefully prepared and included information believed to be true. Please note that discrepancies may occur due to text and/or other errors or changes in the available technology. We advise to contact GL Optic before the use of the product to obtain the latest product specification.
GL OPTI PROBE 5.1.10 Illuminance Usage
Irradiance / illuminance diffuser with quartz glass fiber optic for extended spectral irradiance measurements. The set includes a measuring probe, quartz fiber optics as well as an adapter with a coder for GL SPECTIS 1.0 series spectrometers. This probe covers the full spectral range from UV to IR within the range used by the spectrometer. N.A.=0.20.
GL OPTI PROBE 5.1.10 Illuminance Specifications
| Measuring point diameter | 10 mm |
| Spot size | – |
| Spectral range | 340 – 780 nm (may be further affected by the spectrometer used) |
| Measuring probe size | Ø 40 x 19 mm |
| Type of fiber optic cable | Quartz |
| Fiber optic cable diameter | ⌀1.0 mm |
| Fiber optic cable length | 1.5 m |
| Measurement uncertainty | (x,y) +/- 0.002 |
Note: Instrument, firmware and software specification are subject to change without prior notice. All information included in GL OPTIC datasheets and product information available in any form are carefully prepared and included information believed to be true. Please note that discrepancies may occur due to text and/or other errors or changes in the available technology. We advise to contact GL Optic before the use of the product to obtain the latest product specification.
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GL OPTI PROBE 5.1.50 Illuminance Usage
Irradiance / illuminance diffuser with quartz glass fiber optic for extended spectral irradiance measurements. The set includes a measuring probe, quartz fiber optics as well as an adapter with a coder for GL SPECTIS 5.0, 6.0 and 8.0 spectrometers. This probe covers the full spectral range from UV to IR within the range of the spectrometer used. N.A.=0.20.
GL OPTI PROBE 5.1.50 Illuminance Specifications
| Measuring point diameter | 10 mm |
| Spot size | – |
| Spectral range | 200 – 1050 nm (may be further affected by spectrometer used) |
| Measuring probe size | Ø 40 x 19 mm |
| Type of fiber optic cable | Quartz |
| Fiber optic cable diameter | ⌀1.0 mm |
| Fiber optic cable length | 1.5 m |
| Measurement uncertainty | (x,y) +/- 0.002 |
Note: Instrument, firmware and software specification are subject to change without prior notice. All information included in GL OPTIC datasheets and product information available in any form are carefully prepared and included information believed to be true. Please note that discrepancies may occur due to text and/or other errors or changes in the available technology. We advise to contact GL Optic before the use of the product to obtain the latest product specification.
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