Separation technologies
How can we ensure that the left eye does not see the image on the right? There are three main types of technology:
- VR masks
- Active technology
- Passive technology
VR MasksThe separation is physical. Dedicated optics isolate each eye in front of a screen divided into two.
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Active technologyLCD shutter glasses synchronize with the screen (which alternates between left and right images at high frequency). The eye is blocked when the opposite image is displayed. |
Passive technologyPolarization Light is filtered according to axes (vertical/horizontal or circular). The glasses act like “blinds,” allowing only one type of wave to pass through each eye.
Anaglyph Use of colored filters (red/cyan). This is the simplest and least expensive method, although it degrades colorimetry. |
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