System configurations and methods for controlling image projection apparatuses
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United States of America Patent
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Jun 11, 2013
Grant Date -
Jul 23, 2009
app pub date -
Oct 1, 2008
filing date -
Nov 1, 2003
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Abstract
A projection apparatus comprising a light source for emitting incident light and a mirror device that includes a plurality of mirror elements each guiding the incident light to the ON position towards a projection light path under pulse width modulation (PWM) control corresponding to one frame or sub-frame or to the OFF state so as not to guide the incident light to a projection path. The light source is turned off outside the period in which the mirror element with the maximum brightness is in the ON state.
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