OPTICAL WHEEL DEVICE, LIGHT SOURCE UNIT, AND PROJECTOR

An optical wheel device according to the present invention includes a first wheel on one side of which a luminescent material layer is disposed, a second wheel disposed on the other side of the firstwheel, a first opening portion provided on the first wheel or the second wheel to be situated near a center of rotation, a second opening portion provided further radially outwards than the first opening portion, a communication passage formed between the first wheel and the second wheel to establish a communication between the first opening portion and the second opening portion, a motor configured to rotationally drive the first wheel and the second wheel, and a drive control device configured to control driving of the motor. 本发明提供一种光学轮装置，其特征在于，具有：第一轮，其在一面侧配置有荧光体层；第二轮，其配置于上述第一轮的另一面侧；第一开口部，其设于上述第一轮或者上述第二轮，并设于旋转中心侧；第二开口部，其设于比上述第一开口部靠外周侧；连通路，其形成于上述第一轮与上述第二轮之间，使上述第一开口部与上述第二开口部连通；马达，其对上述第一轮以及上述第二轮进行旋转驱动；以及驱动控制装置，其对上述马达进行驱动控制。