The high-quality BTS2048-VL CCD based spectroradiometer is internationally recognized as a high-end product. It is one of the most compact spectroradiometers on the market which enables direct system integration in many applications without the need for expensive, and potentially measurement degrading, light guides. Among its characteristic features is its diffusor window with cosine corrected field of view for the measurement of spectral irradiance and spectral illuminance. This also permits direct mounting onto integrating spheres (e.g. the ISD-25) for measurement of luminous flux. More detailed information about the BTS2048-VL can be found in the respective data sheets. This unit is also available in the BTS2048-VL-TEC version with thermoelectric cooling
Enhancement of the BTS2048-VL with the ISD-25-V01 integrating sphere
The ISD-25-V01 can be combined with the BTS2048-VL for the measurement of luminous flux, spectrum, color, and color rendering index of single LEDs, LED matrices, and LED lamps with diameters of up to 76 mm. It can also be used to measure special light sources such as endoscopes, light guide cold sources, etc. The lamp is positioned at the 76.2 mm (3 inch) diameter measurement port during the measurement for which a large, stable mounting plate for fixing of brackets and test sockets is incorporated in the ISD-25-V01. The combination of the BTS2048-VL and the ISD-25-V01 meets the requirements of CIE 127 for measurement of the luminous flux of directional (2pi) LEDs.