Examples Optical chopper

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optical incremental rotary encoders form of choppers. these used in many industrial machines. anti-lock braking systems used rotary encoders wheel speed sensors. late 20th century opto-mechanical computer mice used 2 encoders x-y position measurement. optical linear encoders exist.


lcd televisions use millions of lcd shutters paired red, green or blue filters control color of pixels on screen.


movie cameras use optical shutter record individual frames of movie. movie projectors use optical shutter synchronized movie frames produce effect of apparent motion on movie screen.


liquid crystal shutter glasses used in conjunction synchronized display screen create illusion of three-dimensional image.


light signals sent @ sea , @ airports using signal lamp hand operated shutter.












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