Optical Image Reading Device having Adjustable Amplification Rate and Method for Adjusting the same
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United States of America Patent
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app pub date -
Jan 5, 2007
filing date -
Nov 24, 2004
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Abandoned
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Abstract
An optical image reading device that has an adjustable amplification rate and a method for adjusting the same. The optical image reading device includes a transparent object being disposed within the object distance or the image distance. Since the refractive index of the transparent object is larger than that of the air, the compensation and shrinkage of the object or image distances can be achieved accurately without changing the position of the lens and the electro-optical sensor. The amplification rate of the optical image reading device is thus accurately adjusted.
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