BTS2048-UVVISNIR

BTS2048-UVVISNIR CCD spectroradiometer for UV, VIS and NIR radiation

The BTS2048-UVVISNIR meets all the requirements of a high-end UV and VIS diode array spectroradiometer and is available at an attractive price despite its cutting-edge technology.

*One of its unique features is the from Gigahertz Optik GmbH developed innovative BiTec sensor that consists of a V(lambda) filtered Si photodiode and a spectroradiometer unit. This makes it extremely linear, stable, and fastand is therefore a guarantee for higher measurement accuracy which is not accompanied by any disadvantages. Both sensors can be used independently and the mutual correction of the sensors is advantageous for accuracy, speed and versatility (see article on BTS technology).

The fully linearized 2048 pixel CCD detector with thermoelectric cooling offers a very wide dynamic range thanks to its integration time that ranges from 2 µs to 60 s. This enables precise measurements of UV, VIS and some NIR LEDs in a broad intensity range. The design offers high optical resolution of 2 nm over the entire spectral measurement range from 200 nm to 900 nm. The spectrometer is also equipped with an optical filter for automatic low stray light measurements. Such measurements are necessary for broadband UV lamps and UV LEDs in the presence of other light sources. The very high linearity Si photodiode within the BiTec detector is used for linearization of the CCD or taken as a reference detector. The photometric responsivity function of the Si photodiode enables its use independent of the CCD. The photometric precision can be auto-corrected using the respective spectral data. The device can therefore be used to perform fast measurements on very weak signals, something that makes the BTS20418-UVVISNIR perfect for integration in goniometers. Despite its compact dimensions (103 mm x 107 mm x 52 mm – L x W x H), the BTS2048-UVVISNIR spectroradiometer has a remote-controlled filter wheel with two optical filters and a shutter for dark measurement.

Absolute calibration of the absolute irradiance down to 200 nm!

The many years of experience and its well-equipped DAkkS calibration laboratory (D-K-15047-01-00) enables Gigahertz-Optik to offer traceable calibrations down to 200 nm. This broadens the application range of the BTS2048-UVVISNIR to UV-C-LEDs but also VIS or some NIR LEDs. For the shortwave spectral range, Gigahertz-Optik GmbH has implemented a special deuterium lamp-based calibration strategy.

Use in front-end and back-end LED test measurements

The BTS2048-UVVISNIR is perfectly suited for the testing of UV and VIS front-end and back-end LEDs in industrial applications. Its CCD detector integrates an electronic zero setting feature of all pixels before a measurement is triggered (electronic shutter). The electronic shutter and triggering of the measurement can be synchronized with a power supply via a trigger port when the test LED is operated in pulsed current mode. The powerful microprocessor only requires 7 ms to transfer a complete dataset to the system computer via the fast LAN interface.

Direct mounting instead of using a light guide

The BTS2048-UVVISNIR spectroradiometer has a diffusor window and can therefore be used to measure the UV irradiance, incl. spectrum and peak wavelength, without any additional accessory components. With the diffuser window, the BTS2048-UVVISNIR can also be mounted directly onto accessories such as integrating spheres, radiance lenses, and goniometers in order to measure the radiant power, radiance, and radiance distribution.

User software and developer software

The standard S-BTS2048 user software has a customizable user interface and offers a large number of display and function modules which can be activated when configuring the BTS2048-UVVISNIR with the respective accessory components from Gigahertz-Optik GmbH. The S-SDK-BTS2048 developer software is offered for the integration of the BTS2048-UVVISNIR in the customer’s own software.

Calibration

One essential quality feature of photometric devices is their precise and traceable calibration. The BTS2048-UVVISNIR is calibrated by Gigahertz-Optik’s calibration laboratory that was accredited by DAkkS (D-K-15047-01-00) for the spectral responsivity and spectral irradiance according to ISO/IEC 17025. The calibration also included the corresponding accessory components. Every device is delivered with its respective calibration certificate.