An apparatus and method for displaying large format images, graphics, and
videos. The apparatus comprise a layer of column oriented optical fibers,
each fiber is illuminated at one end by at least one laser diode, and a
second layer which sits in front of the first layer and is parallel to
the first layer, whose projected area substantially overlap that of the
first layer. The second layer comprises a plurality of optical fibers
arranged in rows. In between the first and second layer sits a third
layer of optical switching elements. Alternatively, the second layer can
be a light diffusing layer. Laser lights emitted from the laser diodes
travel in parallel along respective column fiber until they are
redirected by optical switching elements which couple the laser lights
within the column fibers to the row fibers or to the difflusing layer
directly whereby they are scattered by the diffusing elements to reach
the viewing audience. The small size of the fibers results in very small
fill factor, allowing light absorbing matrix and backing layer to absorb
ambient light effectively. The contrast ratio under ambient light
condition is further enhanced by the use of multilayer dielectric optical
filter to preferentially absorb ambient light.