The red/blue glasses you've seen in the past utilize an older color-filtering stereoscopic technology ("anaglyph") that limits the range of colors you see on the screen, and provides a limited 3D immersive experience.

Blu-ray 3D™ utilizes an advanced technology, "Frame sequential 3D", that offers a crisp, clear High Definition 3D picture. Blu-ray 3D™ offers you 1080P High Definition stereoscopic images for both your right and left eye utilizing the full wide array of colors available on Blu-ray™. To experience Blu-ray 3D™, you will need a 3DTV, compatible 3D glasses (no more red/blue paper lenses!), a Blu-ray 3D™ player (or a 3D firmware upgrade for existing PLAYSTATION®3 hardware), and a Blu-ray 3D™ movie. Your TV and player will need to be connected with HDMI cables.