Are All Active 3d Glasses The Same. If fact just as with IR remote controls the 3D active glasses from a given manufacturer will usually only work with projectors or 3DTVs from that same manufacturer. The TV then displays the two 3D images left and right at the same time.
Unfortunately not all display manufacturers made the move to the Full HD 3D RF standard for active 3D glasses. The most important thing to remember is that the two kinds of glasses work with radically different 3D implementations and it is very important to make sure the glasses match the technology of the. Therefore to achieve compatibility across different brands certain glasses have been developed to be able to adjust to a broad range of frequencies.
The basic answer is that the active glasses do more to produce the 3D effect for the viewer while passive glasses simply work because of what they are rather than what they do.
If it doesnt match this frequency exactly then your stereo viewing will be uncomfortable nauseating andor you wont be able to see the stereo for more than a very short. While a pack of passive glasses may come at below ten bucks several Active 3D glasses ask for up to 40 dollars for a single unit. There are a very few exceptions to this rule in that Samsung and Mitsubishi 3DTVs use 3D. Each set of 3D glasses is compatible with a particular frequency.