binocular coatings - Binocular Logic

Phase coating vs dielectric coating binoculars: why they solve different roof-prism problems

Oct 23, 2026 by Binocular Logic Editorial Team

Phase correction and dielectric high-reflective prism coatings solve different optical problems inside roof-prism binoculars. Phase correction is concerned with phase shift at the roof surfaces and its effect on resolution and contrast, while a dielectric mirror coating is used to preserve reflectivity where a prism design needs a mirrored surface. A binocular can legitimately list

Fully multi-coated binoculars: read the word fully before trusting the claim

Oct 19, 2026 by Binocular Logic Editorial Team

Fully multi-coated binoculars claim broader multilayer anti-reflection treatment than wording such as coated, fully coated, or multi-coated. The word fully matters because it changes the claimed coverage, but the label still does not tell you the coating recipe, application quality, prism treatment, or measured transmission of the complete binocular. Read the exact phrase first, then