Homalite material which is used as a filter/window in front of a display is often specified with a low-reflectance finish. These surface finishes minimize glare by reducing specular reflection. Unlike other filters, the low glare surface of Homalite filters is cast into the material. This surface is not a lamination or coating so it cannot separate, chip, peel or rub off. Two low-reflectance surfaces are available:

LR72 - The most light-diffusing surface. For mounting as close as possible to the light source. This finish provides a high level of light diffusion and is also characterized by its ability to provide resolution of 12 point, 1/8 inch high (pica) print or larger characters when the filter source is at a parallel to the plane of the light source at a distance of no greater than 1/2 inch from the source. Characters should be viewed perpendicular to the surface of the filter in ambient light (100 foot-candles.)

LR92 - This finish provides a lesser degree of light diffusion but higher resolution than LR 72 described above. Typically 12 point 1/8 inch high print or characters can be resolved through the part when it is placed parallel to the plane of the light source at a distance of no greater than 2 inches from the source. Characters should be viewed perpendicular to the surface of the filter at ambient light.

 

 


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