Opacimeter Attenuator

Opacimeter Attenuator

The neutral density filter produced by UTE Optics has the characteristics of high transmittance accuracy, good flatness and high chemical stability. It is coated on optical glass with inconil film material. The Neutral density wavelength can be from 200nm to 1100nm according to the needs. Compared with the common absorption type attenuator, this coated attenuator is not limited by the thickness of the substrate, because the Neutral density ability is realized by the film, The absorbing glass must depend on the thickness of the substrate, and the absorbing glass only has a good Neutral density effect on the visible region, and the controllability of the Neutral density in the infrared and ultraviolet bands is very poor.