User:Dave3457/Sandbox/Stereoscopy Circularly polarized glasses
Initial version of article
[edit]Circularly polarized glasses
[edit]To present a stereoscopic motion picture, two images are projected superimposed onto the same screen through circular polarizing filters of opposite handedness. The viewer wears low-cost eyeglasses which contain a pair of analyzing filters (circular polarizers mounted in reverse) of opposite handedness. Light that is left-circularly polarized is extinguished by the right-handed analyzer, while right-circularly polarized light is extinguished by the left-handed analyzer. The result is similar to that of steroscopic viewing using linearly polarized glasses, except the viewer can tilt his head and still maintain left/right separation.
The RealD Cinema system uses an electronically driven circular polarizer, mounted in front of the projector and alternating between left- and right- handedness, in sync with the left or right image being displayed by the (digital) movie projector. The audience wears passive circularly polarized glasses.
Changed version of article
[edit]Circularly polarized glasses
[edit]To present a stereoscopic motion picture, two images are projected superimposed onto the same screen using circularly polarized light of opposite handedness. This may be done using circular polarizing filters. The viewer wears low-cost eyeglasses which contain a pair of analyzing filters (circular polarizing filters mounted in reverse) of opposite handedness. Light that is left-circularly polarized is extinguished by the right-handed analyzer, while right-circularly polarized light is extinguished by the left-handed analyzer. The result is similar to that of steroscopic viewing using linearly polarized glasses, except the viewer can tilt his head and still maintain left/right separation.
The RealD Cinema system uses an electronically driven circular polarizer, mounted in front of the projector and alternating between left- and right- handedness, in sync with the left or right image being displayed by the (digital) movie projector. The audience wears passive circularly polarized glasses.