公开(公告)号：US20040066560A1

公开(公告)日：2004-04-08

申请号：US10675995

申请日：2003-10-02

Applicant: PENTAX Corporation

Inventor： Atsuo Kabeta ,  Kazuhiro Yamada

IPC: G02B003/00 ,  G02B007/00 ,  G02B009/00 ,  G02B011/00 ,  G02B013/00 ,  G02B015/00 ,  G02B017/00 ,  G02B025/00

CPC classification number: G02B3/00

Abstract: Disclosed is a lens, which has a convex surface, a concave surface and a flange that is formed around the lens to be projected in a radial direction perpendicular to an optical axis and to be continued from the convex surface. The flange is provided with a groove formed on the side of the convex surface that extends from the outer edge of the convex surface toward the outer edge of the flange. When the lens is pulled up from a solution of coating material, the unnecessary solution that collects at a lower area of the convex surface drips from the lens through the groove. This prevents a formation of a puddle on the convex surface.

Abstract translation: 公开了一种透镜，其具有凸面，凹面和凸缘，该透镜形成在透镜周围，以沿垂直于光轴的径向方向突出并且从凸面延续。 凸缘设置有形成在凸面的从凸面的外边缘朝向凸缘的外边缘延伸的一侧的凹槽。 当透镜从涂层材料的溶液中拉出时，在凸面的下部区域收集的不必要的溶液从透镜通过凹槽滴落。 这防止了在凸面上形成水坑。