Privacy filters, also known as privacy screens, are like a set of vertical blinds for your computer monitor or any device with a screen but on a Nanoscale. Most modern-day filters are only the thickness of a common business card — .012” (.3 mm). Unlike vertical blinds, the louvers are permanently set in the full open (on edge) position. There are approximately 42 louvers in the 12-pt. letter “a” shown below. This makes for about 715 of these louvers per inch (25.4mm) and equates to thousands of mini-louvers per typical screen. The thickness of a dollar bill (.0043”) is approximately the same thickness as 2 louvers in the images below.
