Image display apparatus
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United States of America Patent
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Sep 21, 2010
Grant Date -
Feb 12, 2009
app pub date -
Jul 23, 2005
filing date -
Jul 23, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
An image display apparatus is provided with a slim design and improved illumination efficiency and which is able to suppress degradation of contrast thereby eliminating ghosts. The image display apparatus includes: a light source; a condensing mirror which condenses light emitted from the light source and makes a virtual secondary light source; a light tunnel on which light passing through a color filter is incident; a relay lens system through which light exiting the light tunnel passes; a first mirror on which the light passing through the relay lens is directly or indirectly incident; a reflective display including a plurality of micromirrors arranged on a substrate in a matrix, on which the light reflected off the mirror is incident, wherein each micromirror is turned ON or OFF by individually changing the slope of the micromirrors and thus angles of reflection; and a projection lens which enlarges and projects light reflected from the micromirrors in the ON state, wherein the relay lens system and the first mirror are disposed opposite to each other with an optical axis of the projection lens interposed therebetween.
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