| 摘要 |
<p>The lens (100) has a concave surface (112) of positive meniscus lens (110) and a convex shaped image-side surface (120) of positive lens unit (122). The value of radius of curvature of object-side surface of positive lens unit is larger than value of radius of curvature of image-side surface of lens unit (124). The value of radius of curvature of object-side surface of negative lens unit is smaller than radius of curvature of image-side surface (130) of lens unit. A biconvex lens unit (128) and negative lens unit are adhered with each other.</p> |
