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An external window is something placed between the sensor module and the desired touch active area, usually in form of a plastic or glass “window”. It is of high importance for the function that these surfaces fulfill the optical demands stated in Optical Requirements on External Optical Surface. It is important to know that each window the light passes through will reduce the sensor modules received signal levels, even though the requirements are fulfilled, which in some applications might reduce the maximum detection range.
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3D-models of Neonode Touch Sensor Modules can be downloaded on Downloads.
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