When LG announced its Infinia 55LW6500 55-Inch Cinema 3D HDTV and included four pairs of passive 3D glasses, one had to figure that this new large-screen high-definition television was going to be just another one of the large crowd of passive-eyeglass 3D receivers that would never compete with the likes of Samsung UN55D8000 55-Inch 1080p, but it does.
The LG Infinia 55LW6500 55-Inch Cinema, for example, is just as sophisticated as the Samsung UN55D8000, but there are some major differences in how they get to the same place.
Indeed, the LG Infinia is probably the more sophisticated of the two receivers because it solves problems without the need for active shutter glasses, which, until you study the technology behind the LG Infinia, seems better. However, once you look at the LG infinia, you realize that it is quite a receiver that really can use passive-eyeglasses.
Let's look at the science of depth perception and 3D first. Normally, your left eye and your right eye perceive the same image from slightly different vantage points. It may only be a difference of five degrees per eye, but when you look at an image and close one of your eyes, you see it slightly differently than when you close your other eye and see the same image.
The brain - nature's greatest computer - does the summing and subtracting so that you have depth
