IMAGE PROJECTING APPARATUS AND METHOD FOR CORRECTING FOR OPTICAL AXIS DEVIATION

WIPO Patent Application WO/2013/047656

A1

An image projecting apparatus comprises: a plurality of light sources for outputting a light beam; a video signal control unit (10) into which different video signals are inputted for every light source and which controls the lit state of a corresponding light source in accordance with the relevant video signal; and a scanning means for reciprocatingly scanning the light beam from each of the light sources in a first direction and/or scanning the same in a second direction intersecting with the first direction. The video signal control unit (10) comprises: an optical axis deviation amount setting unit (13) for using one of the light sources as a reference light source and setting the deviation amount of the optical axis of a different light source with respect to the optical axis of the reference light source in the second direction to be a delay amount indicated by a number of scanning lines; and an optical axis deviation correcting means for delaying by the delay amount the display timing of an image from the different light source with respect to the display timing of an image from the reference light source and, when the delay amount is an odd number, for inverting an image depicted by the scanning lines about the second direction on both an outgoing path and return path as regards the different light source.

OHTA MASAHIKO (JP)
ISHIBASHI OSAMU (JP)

PCT/JP2012/074881

April 04, 2013

September 27, 2012

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NEC CORP (JP)
OHTA MASAHIKO (JP)
ISHIBASHI OSAMU (JP)

G02B26/10; G09G3/02; H04N9/31

JP2012068547A	2012-04-05
JP2002148554A	2002-05-22
JP2011039326A	2011-02-24
JP2002344765A	2002-11-29
JP2002365568A	2002-12-18
JP2005181831A	2005-07-07

MIYAZAKI, Teruo et al. (JP)
Akio Miyazaki (JP)

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