遠距成像放大器是利用凹面鏡成像原理,讓目標物體透過光學鏡面的反射,使「手機畫面」落在操作者前方鏡中的較遠位置,並且放大數倍,主要的用途在於延長用眼的距離,用以降低因為長時間近距離看手機對眼睛造成的傷害,尤其是近距離用眼誘發近視度數的增加。也可以作為老花眼者或遠視者閱讀手機內容的輔助工具。[1]
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