Adjusting the image
Mirage M Series User Manual
102
020-101942-02 Rev. 1 (10-2018)
Repeat the color adjustment of sides and corners for each edge of the screen that does not yet
match the center (note that each corner is adjustable in either of its two adjacent side menus).
When done, all areas of a given screen should match.
7. Repeat Steps 5 and 6 for all remaining screens.
8. For each screen, compare the light output of each edge and corner to that of the center. If any
of the areas differ, use the
White Uniformity
menu to match edges and corners to the center
as described below. Begin with the screen exhibiting the most obvious variations in light output.
a. Adjust
edge White Uniformity
first. Note each edge adjustment also affects the rest of
the screen slightly. Keep all edges just slightly
lower
than the center light output rather
than matching light output precisely. Otherwise, it may not be possible to brighten the
corners (typically the dimmest areas of the screen) enough. The best uniformity is a
compromise between the brightest and darkest areas of the screen.
b. Adjust
corner White Uniformity
last. Each corner adjustment affects only this
quadrant.
c. Repeat for each screen.
9. Return to Steps 5 and 6 and, if necessary, fine-tune the zones so that they all still exhibit a
single color temperature.
If you do not want to use or apply Brightness Uniformity settings, delete the check mark from
the
Uniformity Enable
checkbox at the top of the Brightness Uniformity menu. Bottom
defined by the slope.
Creating a seamless image with edge blending
Edge Blending
provides a range of controls for smoothing together the overlapping bright edges of
multiple adjacent projected images to create a single larger seamless image. These controls, which
primarily affect white levels, are typically used in conjunction with mechanical lens blinders
(optional), which are installed on the front of the projector and which primarily affect black levels.
Brightness uniformity adjustment, if desired, should be performed first. The
Edge Blend
or
Grid
Test Patter
n is useful for the mechanical setup of the projectors. If necessary, adjust
Black Level
Blending
first with the
Black
test pattern, then use the
White
test pattern to blend the white
levels on the blend edges. The final step is to check the blended image with an external
source.There is a center line (both horizontal and vertical) in the Edge Blending test pattern. The
intersection of these lines is the true center of the projector’s display area.
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