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Title:
BLUE GLASS AND PREPARATION METHOD THEREFOR, CAMERA MODULE AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/093544
Kind Code:
A1
Abstract:
Disclosed are blue glass and a preparation method therefor, a camera module and an electronic device. The preparation method comprises: carrying out a cutting treatment on a blue glass raw material (S100); slicing the blue glass raw material to obtain a blue glass rough blank (S200); grinding the blue glass rough blank (S300); and performing a double-sided physical polishing treatment on the blue glass rough blank, wherein the double-sided physical polishing treatment comprises at least three polishing stages (S400), namely, an initial polishing stage, a pressurized polishing stage and a depressurized polishing stage, the pressure of a polishing disc on the blue glass rough blank in the pressurized polishing stage is greater than the pressure of the polishing disc on the blue glass rough blank in the initial polishing stage, and the pressure of the polishing disc on the blue glass rough blank in the depressurized polishing stage is less than the pressure of the polishing disc on the blue glass rough blank in the pressurized polishing stage.

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Inventors:
WEI YI (CN)
Application Number:
PCT/CN2020/122904
Publication Date:
May 20, 2021
Filing Date:
October 22, 2020
Export Citation:
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Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
G02B5/20; B24B13/00; B24B37/04; G02B5/22; G03B11/04; G03B30/00
Foreign References:
CN104977638A2015-10-14
CN101456668A2009-06-17
CN106851054A2017-06-13
CN110865432A2020-03-06
CN103231292A2013-08-07
CN104289981A2015-01-21
US20090122394A12009-05-14
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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