Cov koob ntawm Beam Combiners no yog ua los ntawm BK7 (H-K9L) lossis Fused Silica. Nws sib koom ua ke ob lub teeb rau hauv ib qho, txawm tias ultra-violet, pom, lossis ze infrared; nws tso cai rau cov neeg siv sib tov lub teeb pom kev thiab pom nrog ib txoj hauv kev yooj yim ntawm kev sib dhos.
Wavelength tau tsom mus rau kev muab cov khoom siv kho qhov muag siab rau 20 xyoo