发明名称 Variable-powered binoculars
摘要 A pair of variable-powered binoculars include a pair of objective lens systems; a pair of prism systems, each of the prism system inverting an image that advances through the corresponding objective lens systems, from an inverted image to an erecting image; a pair of concave adjusting lenses, each of the concave adjusting lenses placed between a focus formed by the corresponding objective lens system and the corresponding prism system, so that each of the concave adjusting lenses is movable along the optical axis formed by the corresponding objective lens system and the corresponding prism system; and a pair of ocular lens systems, each of the ocular lens systems placed on the optical axis, so that each ocular lens system is movable along the optical axis closer to or away from the corresponding concave adjusting lens, synchronizing with a movement of the corresponding concave adjusting lens.
申请公布号 US6870669(B2) 申请公布日期 2005.03.22
申请号 US20030665023 申请日期 2003.09.22
申请人 KAMAKURA KOKI CO., LTD. 发明人 WATANABE NAOMI
分类号 G02B7/06;G02B23/18;G02B25/00;(IPC1-7):G02B23/00 主分类号 G02B7/06
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