axis extends in ... axis direction(transmission axis of a polarizing plate extends in an x-axis direction – ось пропускания поляризационной пластины сонаправлена с осью х irked)
high index(Due to the wide range of refraction indexes available (n=1.45-1.8), even the latest _high_index_materials can be coated without disturbing interference fringes. millatce)