Light source device

A light source device comprising:

• a plurality of light-emitting units, each including a light-emitting surface;
• an optical member configured to allow light emitted from the light-emitting units to be transmitted or passed therethrough, the optical member comprising:
• a plurality of first regions from which light of a first chromaticity is extracted upon operation of the light-emitting units, and
• a plurality of second regions from which light of a second chromaticity different from the first chromaticity is extracted upon operation of the light-emitting units, wherein the plurality of first regions and the plurality of second regions are alternately arranged in a first direction and a second direction intersecting the first direction so as to face the plurality of light-emitting surfaces and the plurality of light-emitting units are arranged in the first direction and the second direction;
• a first movement assembly configured to cause a relative movement between the plurality of light-emitting units and the optical member so that the light-emitting surface and the optical member face one another;
• and
• a control unit comprising one or more electrical circuits or one or more central processing units, the control unit configured to:
• control light emission of each of the plurality of light-emitting units so that each of the plurality of light-emitting units emits the light in a predetermined period,
• control operation of the first movement assembly so as to control the relative movement between the plurality of light-emitting units and the optical member in the predetermined period, and
• control, in the predetermined period, the relative movement between a state in which a predetermined light-emitting unit of the plurality of light-emitting units is included within one or more of the plurality of first regions in a plan view and a state in which the predetermined light-emitting unit is included within one or more of the plurality of second regions in a plan view.

A light source device comprising:

• a plurality of light-emitting units, each including a light-emitting surface;
• an optical member configured to allow light emitted from the light-emitting units to be transmitted or passed therethrough, the optical member comprising:
• one or a plurality of first regions from which light of a first chromaticity is extracted upon operation of the light-emitting units, and
• one or a plurality of second regions from which light of a second chromaticity different from the first chromaticity is extracted upon operation of the light-emitting units;
• a first movement assembly configured to cause a relative movement between the plurality of light-emitting units and the optical member so that the light-emitting surface and the optical member face one another;
• and
• a control unit comprising one or more electrical circuits or one or more central processing units, the control unit configured to:
• control light emission of each of the plurality of light-emitting units so that each of the plurality of light-emitting units emits the light in a predetermined period, and
• control operation of the first movement assembly so as to control the relative movement between the plurality of light-emitting units and the optical member in the predetermined period;
• wherein the light source device is a flash light source used in an imaging device, and the predetermined period is equal to an imaging cycle or an exposure period for the imaging device.