Title:
PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/067104
Kind Code:
A1
Abstract:
A projection device (100) comprises: a housing (110); an optical engine (120); a sensor switch (140); and a dust cap assembly (130). The optical engine (120) is disposed inside the housing (110) and is connected to the sensor switch (140). The optical engine (120) comprises a lens (122) embedded in one side surface of the housing (110). A sliding groove (150) is formed on an outer side of the side surface in which the lens (122) is embedded. The dust cap assembly (130) is slidably disposed in the sliding groove (150) and is configured to shield the lens (122). The sensor switch (140) is disposed on the side surface in which the lens (122) is embedded, and is configured to sense a location of the dust cap assembly (130) and to generate a switch control signal upon sensing a location variation of the dust cap assembly (130). The switch control signal is configured to control an operation state of the optical engine (120). The invention solves technical problems in which dust caps of existing projection devices tend to be lost easily and structures thereof are complex.
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Inventors:
ZHONG CHAO (CN)
ZHONG BO (CN)
XIAO SHI (CN)
LIU ZHIMING (CN)
ZHONG BO (CN)
XIAO SHI (CN)
LIU ZHIMING (CN)
Application Number:
PCT/CN2016/071063
Publication Date:
April 27, 2017
Filing Date:
January 15, 2016
Export Citation:
Assignee:
CHENGDU XGIMI TECH CO LTD (CN)
International Classes:
G03B17/12; G03B21/14; G03B30/00; G03B31/00
Foreign References:
| CN202615107U | 2012-12-19 | |||
| CN2751331Y | 2006-01-11 | |||
| CN101030021A | 2007-09-05 | |||
| CN202339470U | 2012-07-18 | |||
| CN201438795U | 2010-04-14 | |||
| JP2002090807A | 2002-03-27 | |||
| JP2009075305A | 2009-04-09 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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