In this article, we will discuss different types of polarized 3D glasses. Two major types of polarized 3D glasses are
- Passive 3D glass
- Active 3D glass
Passive polarized 3D glass
Passive 3D glass does not need the power to operate. It uses polarized glasses as lenses, based on the type of polarization we can classify as
- Linearly polarized glass – The viewing quality depends on the tilt of the viewer,so it is not used widely.
- Cirucularly polarized glass – The viewing quality does not depend on the tilt of the viewer, it is normally used in TVs and cinemas.
Pros
- Good 3D effect as compared to anglyph 3D
- Cheaper than active 3D glass
- Comfortable
Cons
- Requires a silver screen when using projector
Active 3D glass
Active 3D glasses need the battery to operate. These glasses are based on LCD shutters, these shutters are placed over each lens. The LCD glasses are darkened to block the lens sequentially and it is in sync with the 3D . It also communicates with the 3D system using any one of the methods below
- Infrared emitter – PC & TV
- Radio frequency emitter – PC & TV
- DLP-link – Projectors
Pros
- Very good 3D effect
- Good color reproduction
Cons
- Expensive
- Not very comfortable
- Flickering
To read about polarized 3D system read our article.