It works by openly presenting the image intended for the left eye while blocking the right eye's view, then presenting the right-eye image while blocking the left eye, and repeating this so rapidly that the interruptions do not interfere with the perceived fusion of the two images into a single 3D image. (Wikipedia)
Active 3d glasses will not work with passive 3d TV. Active glasses use shutter 3D technology that requires a power source to power the lenses in the glasses. Passive glasses don't have electronics or batteries. Hence, they are lighter and more comfortable. Active and passive TV work using completely different technology and thus active glasses cannot work on passive TV.
2 manufacturers, LG and Vizio, are using passive 3d technology. All others are currently selling active 3D systems.
Revealing how 3D TV glasses work, the difference between passive and active shutter glasses, plus new ... Easy to follow guide to the 3D TV technology used to deliver 3D imaging
i brought some active 3d glasses for my lg 42pw450t 3d TV but they don't work
Clear 3D glasses are typically referred to as "passive 3D glasses" or "polarized 3D glasses." They work by filtering different images for each eye, allowing viewers to perceive depth in 3D content. These glasses are often used in cinemas and for some home 3D systems, providing an effective way to enjoy 3D movies without active electronics. They are distinct from "active 3D glasses," which use battery-powered technology to sync with the display.
It is a technology unique in LG's Cinema 3D that corrects for the light lost by its polarizing shutter system across the screen. Other active 3D systems do not have any shutter system on the screen and therefore lose no light.
For your Toshiba TL96 3D TV, you'll need active shutter 3D glasses that are compatible with the TV's specific technology. Toshiba typically uses its proprietary active 3D technology, so look for Toshiba-branded 3D glasses or those specifically designed for use with Toshiba 3D TVs. Make sure the glasses are charged and synced properly to your TV for optimal performance.
Battery powered 3D glasses means they are active 3D glasses and they only work with their own manufactured brand. However the compatibility of passive 3D glasses for other TVs are much higher. They work on any 3D TVs or theaters if they use the same passive technology. The passive 3D TV glasses are also lightweight due to no batteries being attatched. Plus, they don't need to be charged everytime before/after use unlike the active ones.
You should consider first whether you want passive 3D or active 3D. But which technology is a better choice for the consumer depends on preferences and intended use for 3D in the home. LG, Vizio, and Toshiba currently have active 3Ds.
LG Cinema 3D is called the next generation 3D TV for marketing purposes. The the polarizing technology of the LG system has been with us for many years so it's anything but next generation. LG use passive 3D technology while most other manufacturers use active. Active technology does not use polarized light but does use glasses that cut the image from one eye to the other at high speed.
Sunglasses are very unlikely to work with 3D television, even the very basic 3D systems used by LG. They certainly won't work with the more advanced active 3D systems.
Technology in 3D TV has improved much more lately. The upcoming technology is 3D TV without glasses, but it will probably be insanely priced. I think passive 3D TV, as it is called, is the next generation 3D TV, and it may actually be the best 3D TV technology right now. I suggest you gain more information about passive 3D TV if you doubt the quality. You can also take active 3D TV as a comparison.