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The optical system intended to be used with a sighting device of the photographic apparatus reflex is a single objective
The optical system intended to be used with a sighting device of the photographic apparatus reflex is a single objective
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机译:打算与照相设备反射镜的瞄准装置一起使用的光学系统是一个单一的物镜
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摘要
The invention relates to an optical system designed to be used in conjunction with a sighting device of the photographic apparatus reflex to a single lens having a mirror -shaped. The optical system comprises a first convergent lens element d1 and a second element of a divergent lens d3, which satisfy predetermined conditions.
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