LBTEK absorptive neutral density attenuators utilize neutral density glass coated with anti-reflection coatings (Ravg<0.5%@1100-1700 nm), which not only provide stable absorption characteristics but also effectively reduce internal reflections of light within the product in the 1100-1700 nm range. By precisely controlling the thickness and material type of the neutral density glass, high-precision OD attenuation can be achieved (OD tolerance ≤5%@1300 nm). The MNDFA series are pre-installed in standard lens tubes (removable) and offer various optical densities and size specifications. The tube surface is engraved with product model, operating wavelength, OD value, and other parameters for easy user identification. The corresponding tube models for 0.5-inch, 1-inch, and 2-inch neutral density attenuators are: SM05-8A, SM1-8A, and SM2-8A. Note: The thickness of absorptive neutral density filters is for reference only; the actual thickness depends on the optical density of the glass batch used.

LBTEK absorptive neutral density attenuators utilize neutral density glass coated with anti-reflection coatings (Ravg<0.5%@1100-1700 nm), offering stable absorption characteristics while effectively reducing internal reflections within the product from 1100-1700 nm. By precisely controlling the thickness and material type of the neutral density glass, high-precision OD attenuation can be achieved (OD tolerance ≤5%@1300 nm). Currently, the absorptive neutral density attenuators (with anti-reflection coating 1100 nm-1700 nm, unmounted) are available in various optical densities and sizes. They can be installed in corresponding standard lens tubes, fixed lens mounts, and various coaxial mounting plates. Customers can flexibly choose the optimal mounting method based on specific application scenarios. Note: The thickness of the absorptive neutral density filter is for reference only; the actual thickness depends on the optical density of the glass batch used.