52
Antares-PJ1Training
Slide 52
Terms and Definitions - 2
Dichroic Mirror
A dichroic mirror reflects light of a certain frequency range
and allows all other light to pass through.
LCD projectors contain two of these mirrors, to split the light
up into three beams.
Polarized Light
Light waves oscillate in the same way as sound waves.
If the waves oscillate in one plane only, the light is said to
be polarized.
Light reflected by a polarizing screen is polarized, and is
brighter than light reflected from a non-polarizing screen.
Residual Image
When an image on a display changes, a residual image of
the previous image can remain for some time.
In serious cases, it can last for more than 1 minute.
LCD panels normally do not have this problem.
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