公开(公告)号：US20170250054A1

公开(公告)日：2017-08-31

申请号：US15440327

申请日：2017-02-23

Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION

Inventor： Motohiro TAKAHASHI ,  Yoshimasa FUKUSHIMA ,  Katsunori ONUKI ,  Tetsuya NIIBORI

IPC: H01J37/20 ,  H01J37/26

CPC classification number: H01J37/20 ,  H01J37/16 ,  H01J37/261 ,  H01J2237/0216

Abstract: There is proposed a column supporting structure that includes a viscoelastic sheet, a supporting plate which holds the viscoelastic sheet, and a fixation portion which connects the supporting plate to each lens barrel. The viscoelastic sheet is disposed to extend in a plane perpendicular to one lens barrel or the other lens barrel.