Patent ID: 8792783
Filing Date: 2014-07-29
Classification: G03B

Abstract:
1. An exchangeable lens, comprising: a camera lens mount unit having a mount center point, to which a camera body, with twelve body connector terminals disposed near a camera body mount unit at the camera body, is attached; a holding portion where twelve lens connector terminals, each connected to one of the twelve body connector terminals and each including a contact area to come into contact with one of the body connector terminals, are disposed; an optical system that includes a drive target member which can be driven; and a drive unit that drives the drive target member, wherein: the twelve lens connector terminals are: an interior angle formed by the contact area of the first lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point is largest among interior angles, each formed by contact areas of any two lens connector terminals among the twelve lens connector terminals at the mount center point; an interior angle formed by the contact area of the eleventh lens connector terminal and the contact area of the twelfth lens connector terminal at the mount center point is smaller than an interior angle formed by the contact area of any lens connector terminal among the first lens connector terminal through the tenth lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point; an interior angle formed by the contact area of the third lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point is smaller than an interior angle formed by the contact area of any lens connector terminal among the first lens connector terminal, the second lens connector terminal and the fourth lens connector terminal through the tenth lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point; an interior angle formed by the contact area of the fourth lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point is smaller than an interior angle fowled by the contact area of any lens connector terminal among the first lens connector terminal, the second lens connector terminal and the fifth lens connector terminal through the tenth lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point; an interior angle formed by the contact area of the fifth lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point is smaller than an interior angle formed by the contact area of any lens connector terminal among the first lens connector terminal, the second lens connector terminal and the sixth lens connector terminal through the tenth lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point; an interior angle formed by the contact area of the eighth lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point is smaller than an interior angle formed by the contact area of any lens connector terminal among the first lens connector terminal, the second lens connector terminal, the sixth lens connector terminal, the seventh lens connector terminal, the ninth lens connector terminal and the tenth lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point; an interior angle formed by the contact area of the ninth lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point is smaller than an interior angle formed by the contact area of any lens connector terminal among the first lens connector terminal, the second lens connector terminal, the sixth lens connector terminal, the seventh lens connector terminal and the tenth lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point; an interior angle formed by the contact area of the tenth lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point is smaller than an interior angle formed by the contact area of any lens connector terminal among the first lens connector terminal, the second lens connector terminal, the sixth lens connector terminal and the seventh lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point; an interior angle formed by the contact area of the sixth lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point is smaller than an interior angle formed by the contact area of any lens connector terminal among the first lens connector terminal, the second lens connector terminal and the seventh lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point; an interior angle formed by the contact area of the seventh lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point is smaller than an interior angle formed by the contact area of either the first lens connector terminal or the second lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point; an interior angle formed by the contact area of the second lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point is smaller than an interior angle formed by the contact area of the first lens connector terminal and the contact area of the eleventh lens connector terminal at the mount center point; and a distance setting apart a center of at least one lens connector terminal among the twelve lens connector terminals from the mount center point is different from a distance setting apart a center of at least one other lens connector terminal from the mount center point.