| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical element which prevents reflection at its surface and which is small-sized in spite of having converging/diverging action of light. <P>SOLUTION: The optical element is characterized in that a plurality of protrusions are formed on a surface of a substrate, a cycle of a plurality of protrusions is smaller than a wavelength of transmitting light and the volume of the protrusion changes according to a position from a reference axis. <P>COPYRIGHT: (C)2007,JPO&INPIT |
