Adjusting the image
Mirage M Series User Manual
100
020-101942-02 Rev. 1 (10-2018)
as you use the projector, and is different when you return to this menu in the future. These floating
changes do not affect the x/y coordinates or gamut.
Ensuring brightness uniformity
Provides further refinement of displays already matched for their primary colors and overall light
output. Use
Brightness Uniformity to create an exceptionally smooth image in which no area
appears brighter than another.
When used to refine screens already matched for their primary colors, see
and overall light output, proper adjustment of
Brightness Uniformity
can create an exceptionally smooth screen in which:
• No area of the screen appears more red, green or blue than another
• No area of the screen appears brighter than another
• Color and light output from one screen closely matches adjacent screens
Although the
Brightness Uniformity
control can be used for a stand-alone projector, it is
particularly useful for setting up and maintaining tiled images that form a cohesive display wall in
which the color cast and light output appear uniform throughout each image as well as throughout
the entire wall. The procedure provided here assumes a multiple-screen application.
Before you begin, read through the entire procedure before attempting to adjust Brightness
Uniformity controls, and keep in mind the following checklist of prerequisites and guidelines:
•
Adjust Colors First—
Always adjust the primary colors as described in
on page 73 procedure, before attempting to work with
Brightness
Uniformity
. This ensures that primary colors, color temperature, and maximized light output
are all well matched from one screen to another. These matches are needed before you can
achieve good brightness uniformity results.
•
Run Lamp For 100 Hours—
Light output and brightness uniformity can vary significantly
during the first 100 hours of lamp use. For best results with new lamps, either set up brightness
uniformity after this period, or do an initial setup and re-check at 100 hours.
•
Set Lamp Power—
Ensure that each
Lamp Power
setting is as high as possible for your
application while still maintaining a good overall match of light output from screen-to-screen.
By nature, achieving a uniform brightness requires a slightly reduced overall brightness—this
reduction helps ensure that you have enough range of adjustment when examining brightness
variables more closely from screen-to-screen, and helps prevent premature maxing out when
trying to match to a certain color, zone or projector.
•
Use A user Color Temperature—
Always adjust brightness uniformity for a User color
temperature defined when you matched primary colors, and continue to use it for all sources
displayed on the wall. Your other color temperatures are not necessarily matched from screen-
to-screen.
•
White Uniformity Slide Bars—White Uniformity
slide bar values may not reduce to 0.
Each slide bar adjusts overall light output in a specific screen zone, but the value shown
represents the current setting for green in this zone. When other hidden values (red or blue)
are lower than green, during adjustment in the
White Uniformity
menu their values reach 0
first, causing the slide bar to stop earlier than expected.
•
Judge By Eye Or Use A Meter—
Good brightness uniformity can be achieved with either.
http://www.pureglare.com.au
