The spectradiometer JETI specbos 2511-NIR has an extended wavelength range from 380 to 1100 nm, which can be used to measure the visible and near infrared wavelength range. The spectroscopy instrument measures the spectral Radiance. All other parameters as sensitivity, measuring mode (Radiance), viewing angle and optical resolution remain the same as of the standard device.
Available from April 2026. Pre-order now!
The latest generation of Specbos spectroradiometers from JETI, the Specbos 2511, is a further development of the highly successful Specbos 2501. The Specbos 2511 is configured for measuring spectral radiance (luminance), but can also be used to measure spectral irradiance (illuminance) by attaching an optional cosine diffuser.
As a spectroradiometer, the Specbos 2511 VIS measures the spectral radiance or irradiance of the light source between 380 and 780 nm (380-1100 nm for the NIR model, 200 nm -1100 nm for the UV model) and accurately calculates all derived photometric and colorimetric parameters, including luminance, illuminance, CIE chromaticity, correlated color temperature (CCT), and color rendering index (CRI), as well as circadian and other radiometric parameters. With the optional focusing optics, the measurement range can be reduced to a diameter of only 0.5 mm.
Accessory optics are now available for measuring the luminance of AR/VR glasses.
Highlights
The Specbos 2511 series
A focus accessory for measuring the luminance of small spots is available for all models.
Spectral Range | Specbos 2511-VIS: 380 – 780 nm |
Optical Bandwidth | 4.0 nm (alle Versionen) |
Wavelength Resolution | 1.0 nm |
Digital Electronic Resolution | 16 bit ADC |
Viewing Angle | 1.8° (radiance mode) |
Measuring Distance/Diameter | 20cm – Ø7mm (measured at the front of the device) |
Measuring Values | Spectral radiance, luminance, total (in band) radiance, chromaticity (x,y, u’,v’), CCT, CRI, colour purity, RGB, PAR, TLCI, circadian metrics and others With optional diffuser : spectral irradiance, illuminance and total (in band) irradiance |
Luminance Measuring Range | 0.2 … 150 000 cd/m² (Illuminant A) (Higher values with optional filter) |
Luminance Accuracy | ± 3.5 % (Illuminant A @ 100 cd/m2, k=2) |
Luminance Reproducibility | ± 1 % |
Chromaticity Accuracy | ± 0.002 x, y (Illuminant A, k=2) |
Colour Reproducibility | ± 0.0005 x, y (Illuminant A) |
Illuminance Measuring Range | 1 – 800 000 lx (Illuminant A) |
Illuminance Accuracy | ± 2.4 % (Illuminant A @ 2000 lx, k=2) |
CCT Reproducibility | ± 20 K (Illuminant A) |
Max. Wavelength Error | ± 0.3 nm (HgAr line source) |
Polarization Error F8 | < 1 % |
Dispersive Element | Imaging grating (flat field) |
Light Receiving Element | Back thinned CMOS/ CCD array 2048 pixels |
Power Supply | USB-Hub with power supply, optional PoE |
Interface | USB 3.0 und Bluetooth (Specbos 2501) |
Dimensions (LxWxH) | 186 x 105 x 50mm |
Weight | 1000 g |
Operating Conditions | Temperature 10 – 40 °C |
Accessories (included in delivery) | JETI LiVal PC software for Windows 10/11, user manual and software development kit on USB stick, USB cable, charger, tripod, carrying case, protective cap, calibration certificate |
Accessories (optional) | Integrating sphere, filter, side view, and fiber-enhanced diffusers, additional optics |
Calibration | NIST traceable, recommended recalibration interval: 1 year |
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