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Reading pen for reading text with light emitting diodes placed in the body on the large face of a printed circuit board to supply illumination
Reading pen for reading text with light emitting diodes placed in the body on the large face of a printed circuit board to supply illumination
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机译:点读笔,用于阅读文本,发光二极管位于印刷电路板大表面的主体中,可提供照明
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摘要
A lens system (10) includes a lens arrangement (11) and a mirror (12) on a printed circuit board (PCB) (5) and, when reading text, the text is registered by placing the reading opening (3) of the pen against the text, while light emitting diodes (7a,7b) emit light towards the text. The ray pattern (20) of reflected light moves toward the lens arrangement and then to the mirror, angling it perpendicular to the area sensor (9).
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