Optical element part including at least two optical characteristic regions, and turret, optical element device, and camera including the same

A turret-type optical element device, comprising:

• an attaching part configured to be attached to a lensless camera including no optical elements on an optical path;
• and
• a turret configured to be rotatably attached to a substrate having an optical path opening,
• and including an optical element part having at least two optical characteristic regions in which characteristics in optical characteristics possessed by an optical element are different from each other, wherein
• the turret is rotated such that each of the optical characteristic regions and the optical path opening are faced each other,
• the optical element part itself is an integrally formed product that is detachably attached to the turret, and
• the turret-type optical element device is configured to be attached to the lensless camera through the attaching part, and constitutes an imaging system that includes no optical elements, other than the optical element part of the turret, on the optical path.