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Title:
OPTICAL AXIS OFFSET CORRECTING DEVICE, CONTROL METHOD, AND HEADS-UP DISPLAY
Document Type and Number:
WIPO Patent Application WO/2013/046329
Kind Code:
A1
Abstract:
This optical axis offset correcting device is provided with a scanning means (10), a light receiving element (100), a control means, a detection means, and a correction means for correcting an optical axis offset of a first beam radiated by a first light source and a second beam radiated by a second light source. The scanning means (10) scans a scanning area with the first beam and the second beam. The control means changes the position of the radiation by the first beam and the second beam in the scanning area to a main scanning direction or a secondary scanning direction for the scanning area in each of a plurality of repeated scanning periods for each scan. The detection means detects the offset in the optical axes of the first beam and the second beam according to differences in the timing of receiving light of the first beam and timing of receiving light of the second beam by the light receiving element (100). The correction means corrects the optical axis offset for the first beam and the second beam on the basis of the offset detected by the detection means.

Inventors:
YOSHIDA YUICHI (JP)
SASAMORI KAZUYA (JP)
FUKUDA MASAFUMI (JP)
TSURUMI HIDEAKI (JP)
MURATA JUNYA (JP)
Application Number:
PCT/JP2011/072052
Publication Date:
April 04, 2013
Filing Date:
September 27, 2011
Export Citation:
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Assignee:
PIONEER CORP (JP)
YOSHIDA YUICHI (JP)
SASAMORI KAZUYA (JP)
FUKUDA MASAFUMI (JP)
TSURUMI HIDEAKI (JP)
MURATA JUNYA (JP)
International Classes:
G09G3/02
Foreign References:
JP2010020087A2010-01-28
JP2001264660A2001-09-26
JP2011154324A2011-08-11
JP2011180541A2011-09-15
US4684996A1987-08-04
JP2008026590A2008-02-07
JP2007121383A2007-05-17
Attorney, Agent or Firm:
NAKAMURA, TOSHINOBU (JP)
Akinobu Nakamura (JP)
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Claims: