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TV back projection screen mechanism having elements single/common diopter distributed providing collimation/micro focussing from light beams screen reflected and forming distributed refraction elements.
TV back projection screen mechanism having elements single/common diopter distributed providing collimation/micro focussing from light beams screen reflected and forming distributed refraction elements.
The screen mechanism has elements (71) distributed on a single and common diopter enabling both collimating and micro focussing by reflecting light beams reflected on screen. The diopter can also have distributed elements acting by refraction (72).
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