... styles of bowls:traditional opaque & optically clear. High Purity quartz lenses we can produce many kinds of optical quartz device,such ... as qurtz lenses,qurtz mirrors,quartz filters and so on accorind to ... and all kinds of quartz glass,like ultraviolet rays,infrared ray.Ultraviolet optical quartz glass wavelength range:185-2500Infrared optical quartz ...