Glasses lens for observation of crt display device
专利汇可以提供Glasses lens for observation of crt display device专利检索，专利查询，专利分析的服务。并且PURPOSE:To reduce the fatigue of eyes and the degradation of the visual acuity of an operator by extending an apparent sight distance of a CRT display placed at a close distance to observe the CRT display at the best sight distance for the operator and correcting the vergence angle simultaneously. CONSTITUTION:Glasses lenses 4 and 5 consisting of parts of one convex lens whose optical axis is the middle point of a segment connecting centers of pupils of eyes 1 and 2 are arranged just before eyes 1 and 2 to form a virtual image of a CRT display device in the position a length l' distant from eyes (the length l' is longer than a length l from eyes to the CRT display device). When the CRT display device 3 is observed through this convex lens, not only the diopter but also the vergence angle is corrected simultaneously. Thus, the CRT display device 3 is observed in the natural vergence and control state.，下面是Glasses lens for observation of crt display device专利的具体信息内容。
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