I'm curious as to how it will blind you if you look into the sun. As far as I know, our monitors work like this : Each Pixel can display different color, but the brightness value cannot be changed. Now when we look at the sun, it blinds us by being bright, but not being white. A piece of paper is white, but they don't blind us. So if it's not classified information, I would really love to know just exactly how you guys are planning on doing this. Sorry for such a long msg.
We cannot make the monitor brighter than the monitor will go, if that's what you are wondering. If you set a white background for your desktop, you could get an idea of the brightest you will see. But it doesn't do the sun flare effect justice, since the meat of the effect is in the saturation of other colors toward that bright white.
The closest analogy that I imagine most people would be familiar with is the flashbang effect in counterstrike.
it's more to do with the rate that the intensity changes - if ur looking at a black screen, and suddenly it flashes white, you'll experience a suitable enough blinding effect