Search International and National Patent Collections
|1. (WO2016052420) MOUNT ADAPTER AND IMAGING DEVICE BODY|
|Title:||MOUNT ADAPTER AND IMAGING DEVICE BODY|
Provided are a mount adapter and an imaging device body that can prevent a decrease in the resolving power of an imaging element caused by light diffraction at the diaphragm. A mount adapter (50) is mounted between a lens barrel (12) and an imaging device body (13). The lens barrel (12) forms a first image circle C1. The imaging device body (13) contains an imaging element (31) corresponding to a second image circle C2 that is smaller than the first image circle C1. The mount adapter (50) is equipped with a wide conversion lens (22) and an exposure adjustment unit. The wide conversion lens (22) performs variable magnification on an optical image that enters from the lens barrel (12). The variable magnification β of the wide conversion lens (22) satisfies the formula D2/D1 ≤ β < 1, where D1 represents the diameter of the first image circle and D2 represents the diameter of the second image circle. The exposure adjustment unit adjusts the amount of exposure of the optical image to the imaging element (31).