| 摘要 |
<p>There are provided an optical element that comprises a polymer which has a structural unit derived from a specific dihydroxy compound typified by 2,2-bis(4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoro propane (bisphenol AF) and in which the relationship between a refractive index n D and an Abbe number � D satisfies the following formula (I): n D + 0.0076 � � D � 1.78
and that is used for correction of chromatic aberration, and an achromatic lens using the optical element.</p> |
