Photographing lens
专利汇可以提供Photographing lens专利检索，专利查询，专利分析的服务。并且PURPOSE: To prevent the complication of a mechanical constitution by constituting the photographing lens with a first movable lens group for moving a rear group successively along an optical axis for macro-photographing, a fixed lens group having negative refracting power, and a second movable lens group having positive refracting power and moving along the optical axis for a tracking adjustment.
CONSTITUTION: The relay rear group G
42 of a relay lens group G
4 is provided with a first movable lens group GM having positive refracting power and moving along an optical axis at the time of macro-photographing, a second movable lens group GF having positive refracting power and moving along the optical axis at the time of tracking photographing, and also, a lens group GN which is fixed between a first movable lens group GM and a second movable lens group GF and has negative refracting power are arranged. Also, a first movable lens group GM and a second movable lens group GF move along a cam groove for macro and a cam groove for a tracking adjustment provided on a lens barrel, respectively, and the macro-photographing and the tracking adjustment are brought to moving control independently. In such a manner, an interlocking mechanism becomes unnecessary, and the complication is not caused.
COPYRIGHT: (C)1990,JPO&Japio，下面是Photographing lens专利的具体信息内容。
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