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US08699010B2 Examination kit for polarized lens 失效
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Examination kit for polarized lens
Abstract:
An examination kit allows for discovery of the axis of direction and stress areas of polarized lenses. The kit comprises a lower light box with a transparent work surface, two polarized film sheets, a dial gauge with notches defining allowable variation of axis direction and an upper polarized lens for viewing the tested polarized lens in various states and positions.
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