Image capturing device with illumination brightness distribution and adjustment method thereof

An adjustment method of an image capturing device, comprising:

• installing the image capturing device, wherein the image capturing device comprises a substrate, a first light-emitting module, a second light-emitting module, an image capturing module, and a control module;
• activating the first light-emitting module and the second light-emitting module to respectively provide a first light beam with a first brightness distribution and a second light beam with a second brightness distribution, so as to form an illumination beam, wherein in the first brightness distribution, an average brightness of a viewing angle being less than or equal to 60 degrees is less than an average brightness of a viewing angle being greater than 60 degrees, and in the second brightness distribution, the average brightness of the viewing angle being less than or equal to 60 degrees is greater than the average brightness of the viewing angle being greater than 60 degrees;
• capturing an environmental image illuminated by the illumination beam to obtain an image signal;
• generating an adjustment signal according to the image signal;
• and
• adjusting a current of the first light-emitting module and a current of the second light-emitting module according to the adjustment signal.

An image capturing device, comprising:

• a substrate;
• a first light-emitting module, disposed on the substrate, and configured to provide a first light beam with a first brightness distribution;
• a second light-emitting module, disposed on the substrate, and configured to provide a second light beam with a second brightness distribution;
• an image capturing module, configured to capture an environmental image illuminated by an illumination beam to obtain an image signal, wherein the illumination beam comprises the first light beam and the second light beam;
• and
• a control module, electrically connected to the first light-emitting module, the second light-emitting module, and the image capturing module, and configured to generate an adjustment signal, and adjust a current of the first light-emitting module and a current of the second light-emitting module according to the adjustment signal,
• wherein each of the plurality of reflective elements comprises a first reflective surface and a second reflective surface connected with each other, the first reflective surface is located between the substrate and the second reflective surface, and a first included angle between the first reflective surface and a reference plane parallel to the substrate is greater than a second included angle between the second reflective surface and the reference plane.