发明名称 Close-up photographing device
摘要 A close-up photographing device wherein, once a focused or a near focused condition is reached, it can be maintained irrespective of changing of the photographing magnification, and a photographing procedure can be simplified. The device includes first and second mounting members having a photographing optical system and a film mounted thereon, respectively, a third mounting member on which the first and second mounting members are mounted for movement in a direction of the optical axis of the optical system, and a manually operable magnification changing member having first and second means for controlling movement of the first and second mounting members, respectively, relative to the third mounting member. By manual operation of the magnification changing member, the first and second mounting members are moved simultaneously relative to the third mounting member to change the magnification while maintaining a focused condition or a near focused condition.
申请公布号 US4870436(A) 申请公布日期 1989.09.26
申请号 US19880151694 申请日期 1988.02.02
申请人 MINOLTA CAMERA KABUSHIKI KAISHA 发明人 TANAKA, OSAMU
分类号 G02B7/08;G02B7/105;G02B7/28;G03B3/02;G03B13/32;G03B17/04;G03B17/56 主分类号 G02B7/08
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