In its standalone mode, the compact BTS256-LED meter is designed for the convenient measurement of luminous flux, spectrum, color, and color rendering index of single LEDs. A key feature is the conical measurement port at the entry of the internal integrating sphere which enables the measurement of onboard LEDs. The bayonet connector used to attach the conical adapter makes it possible to combine the BTS256-LED with other accessory components. Gigahertz-Optik offers different accessories as part of the BTS256-LED Plus Concept which greatly extends the measurement capabilities of the BTS256-LED.
Enhancement of the BTS256-LED using the ISD-50-V01 integrating sphere
The ISD-50-V01 integrating sphere makes it possible to measure the luminous flux, spectrum, color, and color rendering index of LED arrays and LED spot lamps with diameters of up to 127 mm as well as single LEDs with diameters of up to 10 mm (BTS256-LED without additional integrating sphere).. The integrating sphere is equipped with an auxiliary lamp for self-absorption correction. The BTS256-LED can still be used for single, onboard LEDs. A bayonet adapter enables connection of the device onto the ISD-50-V01 integrating sphere.
One essential quality feature of photometric devices is their precise and traceable calibration. The ISD-50-V01 with the BTS256-LED is calibrated by Gigahertz-Optik’s calibration laboratory that is accredited by DAkkS (D-K-15047-01-00) for the spectral responsivity and spectral irradiance according to ISO/IEC 17025. Calibration of the luminous flux is done using a BN-LHSF-2P-20 calibration lamp that has 2pi radiation characteristics in the sphere.