The need to analysis on the spot and receive instantaneously information about materials and chemical compositions is one key driver to the development of small compact systems. One approach is the spectral analysis of materials and chemicals using optical instruments such as spectrometers. The need to shrink the size with sufficient performance drives major developments in optical instrumentation research. Because shrinking in size also constraints some key performance measures such as resolution, dynamic range and signal efficiency the balance between the chosen optical design and performance of the components is the key for successful system integration. Optical Spectrometers are becoming more and more feasible for the use in daily applications such as agriculture, water and gas analysis and even consumer electronics and need further optimization between optical design, components performance and system assembly strategies. The Webinar will present insights in the use of high performance detectors and its application in spectrometers.