公开(公告)号：US20170307875A1

公开(公告)日：2017-10-26

申请号：US15649342

申请日：2017-07-13

Applicant: Align Technology, Inc.

Inventor： Rami Boltanksi

IPC: G02B26/10 ,  G02B26/08 ,  G02B7/08 ,  G02B7/02 ,  A61C9/00 ,  A61B1/00 ,  A61B1/24 ,  A61B1/04 ,  A61B1/002 ,  H02K41/035

CPC classification number: G02B26/10 ,  A61B1/00172 ,  A61B1/00188 ,  A61B1/002 ,  A61B1/04 ,  A61B1/24 ,  A61C9/0053 ,  A61C9/0066 ,  G02B7/023 ,  G02B7/08 ,  G02B26/0875 ,  H02K41/0356

Abstract: A scanner includes a lens assembly comprising a lens having a lens axis and a positioning system to adjust a focal plane of the lens assembly. The positioning system includes an outer element, an inner element that houses the lens assembly, and a linear-motion bearing that couples the inner element to the outer element. The linear-motion bearing includes a first element coupling and a second element coupling. The linear-motion bearing provides a single degree of translational movement of the inner element along the lens axis.