The cellular nature of parabolic louvers physically blocks the passage
of light at angles above the sheilding angle. The specular aspect of
the finish on the curved vertical surfaces reflect down at angles equal
to or less than the shielding angle. When these louvers are viewed at
angles beyond that shielding angle, they will have little of the
brightness associated with the light source. The amount of brightness
depends directly upon the percent of specular reflectance from the
finish.
The advantage of Parabolic Louvers is the high degree of controlled
light distribution that they offer. This precise light control makes
Parabolic Louvers ideal for areas with moderate to high concentrations
of computer terminals (CRTs). This control is dependent upon the
shielding angle offered by the specific louver and degree of
specularity of the finish. Parabolic Louvers are the optimum choice for
areas where visual comfort and controlled reflection off of vertical
surfaces is critical.
