| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a reflection prevention structure which is useful for optical parts such as a light emitting diode and a photo diode for which a high refractive index (base material) optical member is used, and is not influenced by external force and stain. <P>SOLUTION: The reflection prevention structure 1 is constituted of a base material part 2 consisting of a material of a refractive index n<SB>h</SB>, a minute rugged structure 3 which is provided on the surface of the base material part 2 and formed at a pitch of the light wavelength or less, and a smooth layer 4 which is laminated on the surface of the base material 2 so as to cover the rugged structure 3 and consists of a transparent material of a refractive index n<SB>1</SB>. The material constituting the base material 2 and the material constituting the smooth layer 4 are to be selected so as to satisfy the relation as the formula (1): n<SB>h</SB>>2, and the formula (2): n<SB>h</SB>>n<SB>1</SB>. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
