Patent ID: 8768161
Filing Date: 2014-07-01
Classification: G02B,G03B

Abstract:
1. An optical apparatus accessory detachably attachable to an optical apparatus by relative movement with the optical apparatus, the accessory comprising: multiple terminal faces arranged in a direction of the relative movement and allowed to make contact with multiple terminal pins provided in the optical apparatus to establish an electric contact between the accessory and the optical apparatus; and electric insulation portions provided between each two adjacent terminal faces among the multiple terminal faces, wherein, when a position in a direction from the terminal face toward the terminal pin in a state where attachment of the accessory and the optical apparatus is completed is defined as a height, the multiple terminal faces are arranged at a same height, each of the electric insulation portions includes (a) two adjacent-to-terminal portions respectively adjacent to the two adjacent terminal faces and (b) a convex portion provided between the two adjacent-to-terminal portions and having a higher height than that of the two adjacent-to-terminal portions, the two adjacent-to-terminal portions have a height same as or lower than that of the terminal faces, and the convex portion has a height same as or higher than that of the terminal faces.