Bellows device
专利汇可以提供Bellows device专利检索，专利查询，专利分析的服务。并且PURPOSE: To display directly a photographing magnification by providing a display part on a bellows device.
CONSTITUTION: A tripod screw base 10 is fixed to a tripod, and a camera body 15 is installed and fixed to a camera supporting part 1. Subsequently, a macro lens 17 is installed to a lens mount 4, a rotary control 5 is operated so that a necessary enlarged magnification is obtained. In seeing a display part 12, a bellows 2 is made to expand and contract. Focusing is executed by moving the whole forward and backward against an object to be photographed, by operating a rotary control 11 provided with the tripod screw base 10. The lens itself has a focal distance information transfer pin, this pin is made different in height by a focal distance, and when the lens is installed, the information transfer pin pushes a pin 4c of the mount side by a prescribed quantity, a contact lever 18 is interlocked by this pushed quantity, and a contact part 18' moves to a position where a printing resistance 20 exists. Also, focal distance information of the lens is converted as a resistance value between this lead wire 22 and the other end 21.
COPYRIGHT: (C)1986,JPO&Japio，下面是Bellows device专利的具体信息内容。
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