公开(公告)号：US20070230949A1

公开(公告)日：2007-10-04

申请号：US11533366

申请日：2006-09-20

申请人： Andy LIU ,  Michael Tsai

发明人： Andy LIU ,  Michael Tsai

IPC分类号： G03B11/04

CPC分类号： G03B17/14 ,  G02B7/022

摘要： A thread structure for an optical lens comprises a plastic lens barrel, and the thread structure is formed on an outer surface of the lens barrel. In each single circle of the thread structure there is a normal thread and a partial withdraw thread. The partial withdraw thread is located on a longitudinal parting line of the thread structure, a top diameter and a pitch circle diameter of the partial withdraw thread are smaller than those of the normal thread, the thread structure is provided with ribs that are located at the root of a first normal thread close to the front end of the lens barrel. The withdraw thread produces an interval between the thread structure and the base, thus preventing the burrs on the parting surface from contacting the inner threads of the base and causing powder.

摘要翻译： 用于光学透镜的螺纹结构包括塑料透镜镜筒，并且螺纹结构形成在镜筒的外表面上。 在螺纹结构的每个单圈中有一个普通螺纹和一个部分抽出螺纹。 部分拔出螺纹位于螺纹结构的纵向分型线上，部分拔出螺纹的顶部直径和节圆直径小于普通螺纹的直径和节圆直径，螺纹结构设置有位于 第一根法线的根部靠近镜筒的前端。 抽出螺纹在螺纹结构和基部之间产生间隔，从而防止分型表面上的毛刺接触基部的内螺纹并引起粉末。