| 摘要 |
PROBLEM TO BE SOLVED: To provide a new optical element which is readily cleaned and has no possibility of subwavelength structural break due to the cleaning, and to provide a method of manufacturing the optical element. SOLUTION: The optical element has a varying refractive index region of a subwavelength structure, in which the refractive index varies at a pitch smaller than the wavelength of used light L2, according to the required optical function, formed on a transparent substrate 10A of a photoreactive material, of which the refractive index is varied by the radiation of light L1, and the optical element has a smooth surface. COPYRIGHT: (C)2007,JPO&INPIT |
