PROJECTION DEVICE, PROJECTION SYSTEM, AND CALIBRATION METHOD THEREFOR

WIPO Patent Application WO/2017/107969

A1

Provided are a projection device (1), a projection system, and a calibration method therefor, comprising: a beam generator (10) for emitting a first beam (a1), a second beam (a2), and a third beam (a3), wherein projection lines formed by projecting the first beam (a1), the second beam (a2), and the third beam (a3) onto a rectangular screen (2) having a preset size and in a preset relative position with respect to the projection device (1) overlap any three sides of the rectangular screen (2). Accordingly, a user can adjust projection positions of the first beam (a1), the second beam (a2), and the third beam (a3) to make the projection lines formed by projecting the first beam (a1), the second beam (a2), and the third beam (a3) onto the rectangular screen (2) overlap any three sides of the rectangular screen (2), so that relative positions of the projection device (1) and the rectangular screen (2) are preset relative positions, namely initial installation positions arranged by a professional technician, thereby solving a problem in which a user cannot view a projected image properly due to a change in the relative positions of the projection device (1) and the screen (2).

WO/2011/142456	DISPLAY ELEMENT, DISPLAY, AND PROJECTION DISPLAY DEVICE
WO/2014/208436	PROJECTION DEVICE AND PROJECTION-TYPE DISPLAY DEVICE
JP2013145260	PROJECTOR

DENG GAOFEI (CN)
LIN WEI (CN)
LI YI (CN)

PCT/CN2016/111680

June 29, 2017

December 23, 2016

Click for automatic bibliography generation  

APPOTRONICS CHINA CORP (CN)

G03B21/14

JP2014224841A	2014-12-04
US20080259288A1	2008-10-23
CN103096007A	2013-05-08
CN201369800Y	2009-12-23
CN104460197A	2015-03-25
CN104535051A	2015-04-22

View/Download PDF      PDF Help

Previous Patent: METHOD, DEVICE AND SYSTEM FOR DYNAMICALLY ASSIGNING ROAMING NUMBERS

Next Patent: HEAT DISSIPATION APPARATUS FOR COLOR WHEEL, LIGHT SOURCE MODULE, AND PROJECTION SYSTEM