公开(公告)号：US10413187B2

公开(公告)日：2019-09-17

申请号：US15580072

申请日：2016-03-24

Applicant: Hitachi, Ltd.

Inventor： Toshiteru Nakamura ,  Satoshi Ouchi ,  Yoshiho Seo ,  Kouji Fujita ,  Shinsuke Onoe ,  Kenichiro Yamada ,  Tomoto Kawamura

IPC: A61B5/00 ,  G01S7/481 ,  G02B26/10 ,  G02B27/02

Abstract: An object of the invention is to provide a technology for further improving scanning performance. Provided is an optical scanning device including: a scanning unit including an optical waveguide configured to guide incident light and emit the light from an emission end, and a vibration unit configured to generate a vibration and vibrate the emission end; and a signal transmission unit configured to transmit a signal to the scanning unit and cause the scanning unit to scan an object, characterized in that the scanning unit includes a first bonding and vibration attenuating unit configured to bond, with an elastic member, an end surface of the vibration unit closer to the emission end and the optical waveguide.

公开(公告)号：US11240402B2

公开(公告)日：2022-02-01

申请号：US15869830

申请日：2018-01-12

Applicant: Hitachi, Ltd.

Inventor： Shinsuke Onoe ,  Toshiteru Nakamura ,  Kenichiro Yamada ,  Takahiro Matsuda ,  Yoshiho Seo

IPC: H04N3/02 ,  H04N3/28 ,  G01S17/42 ,  G01S17/08 ,  G01S7/481 ,  G02B6/42

Abstract: An optical scanning device for displaying or capturing an image is used, the device including: an optical scanning unit configured to scan emitted light while drawing a spiral trajectory, wherein the unit includes: a light guide path configured to guide incident light to output the emitted light from an emission end; and a vibration unit configured to vibrate the emission end; a light emission control unit configured to control light emission of the emitted light; a polar coordinate generation unit configured to generate a radius and a deflection angle relating to the spiral trajectory; a driving signal generation unit configured to generate a driving signal for driving the vibration unit; an angle correction unit configured to perform calculation for correcting an angle based on information from the driving signal generation unit and output an corrected angle; and a coordinate calculation unit configured to calculate coordinates of an image.