公开(公告)号：US20030075694A1

公开(公告)日：2003-04-24

申请号：US10050827

申请日：2002-01-18

Applicant: Marktec Corporation

Inventor： Masami Motoyama

IPC: G01J001/00

CPC classification number: G02B5/208 ,  G01N21/91 ,  G02B5/283

Abstract: An ultraviolet light permeable filter for an ultraviolet detection light is equipped on a filter glass surface with a dielectric multi-film layer which allows a visible radiation of wave length from 694 nm to 780 nm to reflect on the layer. The wave length also does not penetrate through the multi-flim layer. This filter prevents a reddish halation occurrence during an inspection display of a flaw detection light, which is the main cause of overlooking a scratch or flaw pattern.

Abstract translation: 用于紫外线检测光的紫外线透过滤光器装在具有允许694nm至780nm波长的可见光辐射在层上反射的介电多层膜的过滤玻璃表面上。 波长也不穿透多层。 该过滤器可防止在检测显示屏中出现红色晕影，这是瑕疵或缺陷图案的主要原因。