Cold Red
This filter is comparable to the Red Hot Filter,
except that the coldest areas of the image are
shown in red. This is also a tactical filter which
is preferably used at night to reduce the glare
effect.
Rainbow
The Rainbow filter is a technical filter that
can be used to assess building insulation. In this
case the color profile is no longer monochro-
me as in the case of the filters described
above. Instead, an incorrect color represen-
tation is used. The range from warm to cold
is illustrated the colors: white, red, yellow,
green, blue and black.
Rainbow HC
The Rainbow HC-filter is comparable to the
Rainbow-filter but each color transition still
contains a brightness coding after black. This
creates even greater contrasts at the transi-
tions from one color to another and makes
even smaller temperature differences visible.
With this filter largely homogeneous surfaces
such as walls can be examined particularly
well for changes (e.g. wet areas). However,
the orientation and classification of tempera-
ture ranges is hardly possible any more.
Cold Green
Comparable with the Cold Red filter, except
that the lightest color is green. With this filter,
stray light, e.g. reflected by the eye is far less
noticeable by light amplifiers. This is also a
tactical filter. The nighttime glare effect for the
user is however very pronounced, since the
color green is also perceived by the rods as
one of the brightest colors.
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