Patent ID: 11927742
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Optics (Instruments)
Classification: CPC B  G  F | IPC B  F  G

Claim 0:
1. An illumination device comprising:
a light source to emit light;
a pair of wedge prisms to receive the light and deflect the received light; and
a driving portion including a first gear and a second gear, the driving portion causing the pair of wedge prisms to rotate about a first rotation axis of the pair of wedge prisms by using the first gear and the second gear,
wherein the pair of wedge prisms include a first wedge prism held by a first barrel and a second wedge prism held by a second barrel;
wherein the first barrel is disposed inside the second barrel;
wherein a third gear whose center axis is the first rotation axis is provided on an outer periphery of the first barrel;
wherein a fourth gear whose center axis is the first rotation axis is provided on an inner periphery of the second barrel;
wherein the first gear is disposed on an outer peripheral side of the third gear and meshes with the third gear; and
wherein the second gear is disposed on an inner peripheral side of the fourth gear and meshes with the fourth gear.