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Title:
APPARATUS FOR DETECTING SHIFT OF DIFFUSION FILM, AND HEAD-UP DISPLAY
Document Type and Number:
WIPO Patent Application WO/2021/196017
Kind Code:
A1
Abstract:
An apparatus for detecting a shift of a diffusion film, and a head-up display, for use in detecting a shift of a diffusion film and applied to the field of automatic driving. The apparatus for detecting a shift of a diffusion film comprises a conductive module (200) having a relatively steady positional relationship with the diffusion film; when the diffusion film is located at a first position, the conductive module (200) is connected to a power supply (100) to form a closed loop; when the diffusion film is shifted from the first position to a second position, the closed loop is cut; on the basis that a detection module (30) detects that the closed loop is cut, it can be determined that the diffusion film is shifted, so that a user can be prompted in time.

Inventors:
WENG DER CHENG (CN)
Application Number:
PCT/CN2020/082572
Publication Date:
October 07, 2021
Filing Date:
March 31, 2020
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G02B27/01; B60K35/00; G01N27/04; G02B5/02; G02B26/10
Foreign References:
CN109543515A2019-03-29
US20190285885A12019-09-19
CN110741305A2020-01-31
CN107636508A2018-01-26
CN107870186A2018-04-03
US20100053604A12010-03-04
CN101958110A2011-01-26
US20190033585A12019-01-31
CN109031676A2018-12-18
CN102466882A2012-05-23
CN101334530A2008-12-31
Other References:
See also references of EP 4113192A4
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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