if they don't see you... they don't shoot you.®

Tenebraex ARDs work by a clustering a large number tiny tubes into a honeycomb-like grid. The length-to-width ratio of these tubes has a certain selected relationship to the field of view of the optical system.  With this patented geometry, there is no vignetting or reduction in the field-of-view, light reduction is only on the order of 15%, any loss in resolution is imperceptible... and Glint is eliminated.