BK7 Glass

N-BK7 and BK7 bk7 slot BK7 is a standard glass for all kinds of optics The SCHOTT glass is nearly bubble free, has an excellent clarity, and a very low amount of inclusions bk789 เข้าสู่ระบบ BK7 wafers are excellent for optical chromatic lens BK7 produces pristine color at all wavelengths with superior purity & superior optical performance

bk789สล็อต BK7 wafers are excellent for optical chromatic lens BK7 produces pristine color at all wavelengths with superior purity & superior optical performance