FIELD: physics, optics.
SUBSTANCE: anti-reflective optical element has a base and a plurality of structures situated on the surface of the base and in form of cuts or protrusions with a conical shape. The structures are arranged with a spacing which is less than or equal to the wavelength of light of the wavelength range in the ambient environment using said element. Lower portions of structures lying next to each other are connected to each other. The effective refraction index in the direction of the depth of the structures gradually increases in the direction of the base and corresponds to an S-shaped curved line. The structures have a single step on the lateral surface of the structures.
EFFECT: improved anti-reflective characteristics.
19 cl, 60 dwg, 1 tbl
