| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lens cover for a crime prevention lens and the crime prevention lens with the lens cover constituted by the lens cover and the crime prevention lens formed into a unit. <P>SOLUTION: An indoor side end part 20 of the crime prevention lens A includes a first ring part 22 facing an indoor side of a door D and constituted by the outer periphery 21 of an outer cylinder 2, a second ring part 23 formed on an indoor side of the first ring part 22 and having outside diameter 23a being substantially the same as inside diameter 30a of a mounting ring 30 of the lens cover 3, a ring groove 24 formed on an indoor side of the second ring part 23 and having smaller outside diameter 24a than outside diameter 23a of the second ring part 23, a third ring part 25 formed on an indoor side of the groove 24 and having outside diameter 25a being substantially the same as outside diameter 23a of the second ring part 23, a retaining ring 4 attached to the ring groove 24, and the lens cover 3 constituted by sandwiching the mounting ring 30 in between the retaining ring 4 and the first ring part 22. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
