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Title:
GLASS SURFACE STRESS DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/050114
Kind Code:
A1
Abstract:
A glass surface stress detection device comprises an illuminating unit (10), a detection prism (20), and an imaging unit (30). The illuminating unit (10) is used for providing polarized illuminating light, and comprises a light source. The detection prism (20) comprises a detection surface (20a) used for fitting the surface of detected glass for detection. The imaging unit (30) comprises a quartz wedge (32), an analyzer plate (33), and a lens group (34) that are sequentially disposed along a light path. The illuminating unit (10) also comprises a cylindrical mirror (15). The cylindrical mirror (15) is disposed between the light source and the detection prism (20), and has positive radial refractive power, and the cylindrical mirror (15) is arranged to allow the axial direction of the disposed cylindrical mirror (15) to be perpendicular to a common light path normal plane where normals of at least part of the light and a detection surface (20a) are located. The illuminating light is converged by the cylindrical mirror (15), incident light on the detection surface (20a) of the detection prism (20) comprises different incidence angles of critical angles of total reflection, and accordingly manual work on incidence angle adjustment can be alleviated or omitted, and the glass surface stress detection device has a more compact integral structure.

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Inventors:
LI JUNFENG (CN)
Application Number:
PCT/CN2017/102101
Publication Date:
March 22, 2018
Filing Date:
September 18, 2017
Export Citation:
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Assignee:
BEIJING JEFFOPTICS CO LTD (CN)
NANTONG JEFFOPTICS INSTR CO LTD (CN)
International Classes:
G01L1/24
Foreign References:
CN106441655A2017-02-22
CN206019885U2017-03-15
CN105758566A2016-07-13
CN101451826A2009-06-10
CN205449356U2016-08-10
CN105424241A2016-03-23
CN204535899U2015-08-05
CN1908638A2007-02-07
US20030169417A12003-09-11
Attorney, Agent or Firm:
BEIJING ZHILIN HENGYUAN IP FIRM (CN)
Download PDF:
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