公开(公告)号：US20200208965A1

公开(公告)日：2020-07-02

申请号：US16717320

申请日：2019-12-17

Applicant: MITUTOYO CORPORATION

Inventor： Satoru YOSHIDA ,  Tatsuya NAGAHAMA ,  Hitoshi ISOBE ,  Masafumi YAMANAKA ,  Naoto OITA ,  Koji KUBO ,  Yuko SHISHIDO ,  Nobuo OHBA ,  Takahisa OOTAKE ,  Hiroki MATSUI ,  Masanori ARAI ,  Shiro IGASAKI ,  Yuki KURAHASHI ,  Hiroshi SAKAI ,  Yutaka WATANABE

IPC: G01B11/24 ,  G02B21/36 ,  H04N5/225

Abstract: An image measurement apparatus, which functions as a non-contact profile-measuring device, includes: an image sensor as an image pick-up device; a variable focal length lens (liquid lens unit) disposed on an optical axis extending from a workpiece to the image sensor; and a controller (image-pickup lens controller and image measurement processor) configured to control the variable focal length lens and process a detected image by the image sensor. The image measurement apparatus, which also functions as a non-contact displacement-detecting device, includes: an image sensor; a variable focal length lens (liquid lens unit) disposed on an optical axis extending from the workpiece to the image sensor; and a controller (displacement-detection lens controller and profile measurement processor) configured to control the variable focal length lens and a detected image by the image sensor.