Privacy Monitor
Jonah Chen, Eric Fan
R C Palmer Secondary
Floor Location : J 035 D

The motivation for this project is based on that if one is doing private work on their computer, one would not want and could not control others to see their work. The “Privacy Monitor” was completed by the removal of the polarizing and anti glare filters which was in front of the LCD Panel, than reusing the polarizing filter in front of the lens, and the glasses. We decided to investigate the amount of quality that would be given up for the privacy. We decided to test this with two parameters. With a camera, and human testing. The camera was set on a tripod one meters in front of a monitor, in a completely dark room with the only light source being the LCD. The camera was focused and used the exact same settings both repetitions. The Human testing was done with each test subject being placed one meters away from the monitor screens with the LCD being the only source of light. They were asked to tell the differences between the monitors. The results from this experiment proved that the quality in terms of sharpness, contrast, and color saturation degraded drastically, and is even enough to be noticed by the human eye. The change in luminosity is noticed by the camera only by -2E.V. (4 time darker) but there are mixed comments from the test subjects, perhaps because of how the human eye adapts to the brightness in the environment. These results show that reusing the polarizer from the LCD is not going to be good for someone doing color work, and the decrease in contrast makes viewing text less appealing, but using a high quality circular-polarizer could fix all these issues, and could be more beneficial for people who need the extra privacy.