3D Polarization modulator

Combination of the advantages of active and passive system

3D polarization modulator is a unique technology combining advantages of both active and passive system. Form the active systems it adopts the possibility to use only one projector. Form the passive system it takes up the possibility to use cheap plastic or even paper glasses. As the projector it is possible to use any active 3D projector as e.g. DepthQ projector or Christe Mirage projectors. The principle of the method is following: The polarization modulator is synchronized with the active projector. When the projected image changes, the modulator changes the plane of polarization. This can happen at 120 Hz frequency (or even higher, e.g. 144 Hz). The result is identical image as from dual projector with polarization filters. The system can optionally support circular polarization as well (to make horizontal glasses displacement tolerable). Our company is a distributor of this device witch we had developed in cooperation with LightpseeDesign company (we were responsible for the electronic part).

More information you can find in pdf product document.

Advantages: One projector is sufficient. It is possible to use cheap plastic or paper glasses. Very simple installation in comparison to dual projector based system. Disadvantage Special non-depolarizing screen is necessary. High gain screen material and high light power of the projector is required for big screen size.

 

Comparison of different 3D stereoscopic visualization techniques Technology Color information Resolution Suitable for projection Monitor based visualization Number of observers Cost Anaglyph complete lose middle yes yes high very low Active stereoscopy full high yes yes (no LCD) restricted high Passive stereoscopy full high yes no high middle 3D Polarization Modulator full high yes yes high lower Autostereoscopic monitor full middle no yes very restricted high The table table demonstrates suitability of different stereo visualization methods.