| 摘要 |
An optical near-field generating element (10) is provided with: a light shielding member (12), which is placed on an optical path of light emitted from a light source, for defining a micro opening (20) having a diameter equal to or shorter than a wavelength of the light; and a dielectric film (13) placed in close contact with the micro opening. Alternatively, an optical near-field generating element (10') is provided with a light shielding member (12'), which is placed on an optical path of lights emitted from a light source, for defining a micro opening (20') having a diameter equal to or shorter than a wavelength of the light, the shielding member equipped with: a main portion for defining a basic shape of the micro opening; and a protrusion portion (31) protruding from the main portion toward the center of the micro opening. <IMAGE> |
