Enhanced stray light suppression black treatments process for observational remote sensing telescopes

In this paper, we propose a black treatment method for optical-mechanical surfaces in observational remote sensing telescopes. This treatment effectively suppresses stray light, enhancing the dynamic range of the telescope's sensors. The black treatment process involves using a laser to create periodic holes followed by coating with a Blackening Matrix (BM). Measurement results show that the total integrated scatter (TIS) is less than 2.4% at incident angles from 8° to 70° and less than 4.2% at angles from 70° to 80°. These results demonstrate that the proposed method is more effective than traditional blackening techniques, making it a promising solution for future space applications where minimizing stray light is critical.