Automatic focusing device capable of short-distance photography
专利汇可以提供Automatic focusing device capable of short-distance photography专利检索，专利查询，专利分析的服务。并且PURPOSE:To switch the device automatically between normal photography and short-distance photography and to perform automatic focusing for either photographic range by controlling the optical-axis directional position of a focusing optical system and the position of an optical system for short-distance photography according to a distance signal. CONSTITUTION:The 2nd out/in lever 22 follows up the counterclockwise rotation of the 1st out/in lever 21, a lens 4 for macro-photography is unlocked from the projection 22b of the lever 22, and a macro lens 4 moves to a position in the optical path of a photographic lens 2 with the energizing force of a spring 27a. The rightward movement of a control plate 8 accompanying shutter release operation is transmitted to a rack 32 through a rack part 8c, small-diameter gear 29, large-diameter gear 30, gear 31, and rack part 32a to lock the projection part 4a of the lens 4 with the step part 34b of the rack 34. Thus, focusing in macrophotography is carried out with recessed parts 3b1 and 3b2 of a cam 3b that locked claws 3a1-3a5 of the hook part 14a of a lever 14 engage according to the number of pulses of a lens position signal (f).，下面是Automatic focusing device capable of short-distance photography专利的具体信息内容。
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