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Title:
CONTACT IMAGE SENSOR DEVICE, DEVICE FOR MONITORING CHANGE IN CRACK, AND CLEANING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/051851
Kind Code:
A1
Abstract:
A contact image sensor device comprises: a frame (11); a light-transmissive plate (14) connected to the frame (11) to form an accommodation cavity; a light source (12) positioned in the accommodation cavity, the light source (12) being used to illuminate a wall surface (50) and a crack (60) at a monitoring location; an optical lens (17) positioned in the accommodation cavity, at least one light source (12) being provided at the periphery of the optical lens (17); an optical-electrical conversion chip (13) provided corresponding to the optical lens (17), the optical-electrical conversion chip (13) being used to convert an optical signal emitted from the optical lens (17) to an electrical signal; and a cleaning device (20) comprising a first driving portion (21) and a cleaning assembly (22) connected to the first driving portion (21), the cleaning assembly (22) being driven by the first driving portion (21) to move relative to the light-transmissive plate (14) so as to remove foreign matters on a surface of the light-transmissive plate (14) facing the monitoring location. The contact image sensor device can conveniently use the cleaning device (20) thereof to clean the light-transmissive plate (14). Also provided are a device for monitoring a change in a crack, and a cleaning method.

Inventors:
WANG HUYAN (CN)
WANG FENGXIU (CN)
WANG JIAZHONG (CN)
CAO HUILI (CN)
Application Number:
CN2020/092134
Publication Date:
March 25, 2021
Filing Date:
May 25, 2020
Export Citation:
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Assignee:
WEIHAI HUALING OPTO ELECT CO (CN)
International Classes:
G01B11/02; B08B1/00; G01N21/94; H04N1/028
Attorney, Agent or Firm:
KANGXIN PARTNERS, P.C. (Tower A Indo Building,A48 Zhichun Road, Haidian District, Beijing 8, CN)
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