The assembly stage plays a major role in the manufacturing chain of optical systems, as it can influence both the operational and non-operational performance of the whole system. When selecting a technology to build optical systems, various considerations arise, such as temperature and lifetime stability, radiation resistance (in the case of space applications), stress compensation, and outgassing, which with many others have a huge impact on the requirements for the final product. In order to fulfill the requirements of thermal and mechanical testing for space applications, while preserving its optical performance with the application of a laser beam solder technique (Solderjet bumping), a study on the design and selection of optical and mount materials with different sizes has been done, achieving promising results for the further application in space optics.