Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
CLEANING DEVICE, IMAGING UNIT WITH CLEANING DEVICE, AND CLEANING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/217600
Kind Code:
A1
Abstract:
The present invention provides a cleaning device in which a signal processing circuit (20) determines that a foreign substance adheres on the surface of a protective cover (2) on the basis of at least two pieces of information among a change amount (Δf) of a resonant frequency when a vibration unit (12) is driven with a first voltage (V1), a change amount (ΔI) of a current value related to impedance detected by an impedance detection unit (70), and a temporal change (lightness integrated value) in an image captured by an imaging unit (5), and controls the vibration unit (12) in accordance with the determination to clean the surface of the protective cover (2).

Inventors:
KISHI NORITAKA (JP)
SAKAGUCHI HITOSHI (JP)
TAKATA MASAAKI (JP)
AMANO MASARU (JP)
MORI TAKAAKI (JP)
Application Number:
JP2020/000851
Publication Date:
October 29, 2020
Filing Date:
January 14, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H04N5/225; B60S1/60; G03B15/00; G03B17/02
Domestic Patent References:
WO2018198465A12018-11-01
Foreign References:
JP2015031564A2015-02-16
JP2004289532A2004-10-14
JP2009010736A2009-01-15
JP2003330082A2003-11-19
JP2009165032A2009-07-23
JP2012138768A2012-07-19
JP2011244417A2011-12-01
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
Download PDF: