公开(公告)号：US20170131139A1

公开(公告)日：2017-05-11

申请号：US15322181

申请日：2014-12-04

Applicant: Hanwha Techwin Co., Ltd.

Inventor： Jin Seok PARK ,  Seung PARK

IPC: G01J1/02 ,  G01J1/42 ,  G01D11/24

CPC classification number: G01J1/0252 ,  G01D11/245 ,  G01J1/42 ,  G01S7/4813 ,  G02B27/0006

Abstract: A foreign substance prevention apparatus according to an embodiment of the present invention may comprise: a housing including a suction port which is a passage for sucking external air, and a discharge port for discharging the sucked external air; a fan which exists inside the housing and rotates so as to suck the external air; and a connection bracket for connecting the housing and a sensor