摘要:
An optical element includes a base and a large number of structures arranged on the surface of the base, the structures being projections or depressions. The structures are arranged at a pitch shorter than or equal to a wavelength of light in a use environment. An effective refractive index in the depth direction of the structures gradually increases toward the base and has two or more inflection points.
摘要:
An optical element includes a base and a large number of structures arranged on the surface of the base, the structures being projections or depressions. The structures are arranged at a pitch shorter than or equal to a wavelength of light in a use environment. An effective refractive index in the depth direction of the structures gradually increases toward the base and has two or more inflection points.
摘要:
In one example embodiment, an optical element includes a base and a large number of structures arranged on a surface of the base. In one example embodiment, the structures are depressions or projections with a conical form. In one example embodiment, the structures are arranged at a pitch shorter than or equal to a wavelength range of light in a use environment and lower portions of the structures adjacent to one another are connected to one another. In one example embodiment, an effective refractive index in a depth direction of the structures gradually increases toward the base and draws an S-shaped curved line.