| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical unit with high resolution use, comprising lenses that are all plastic lenses. <P>SOLUTION: The optical unit includes lenses (1) and (2): (1) the plastic lens, having 45-60 of Abbe's number, and (2) the lens including a structure derived from spirobiindan and obtained by injection-molding a polycarbonate material of which the glass transition temperature is 120-150°C. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
