The zodiacal glow refers to the diffuse scattered sunlight on the ecliptic plane . 黃道光指的是在黃道平面上漫散射的太陽光。
Space optical system , especially space infrared optical system , cryogenic optical system and some huge space - based telescopes , all work in the environment where there is strong radiation ( such as sun etc . ) out of the field of the system . because of diffraction of the entrance pupil and diffuse scatter of all inner surfaces , the strong stray radiation will reach the detector of the system 空間光學系統,特別是空間紅外光學系統、低溫光學系統以及某些大型空間望遠鏡,都工作在系統視場外有強烈輻射源(如太陽等)的“惡劣”環境中,這些強烈雜光輻射經過光學系統孔徑的衍射,以及結構與光學件表面的散射,到達系統像面形成雜光。