Fill light device, method for controlling fill light device, and computer storage medium

A fill light device, comprising:

• a flash light;
• a light guide, the light guide being located on a light-exiting side of the flash light;
• an identification module, wherein the identification module is configured to perform face detection on a preview image of a camera module, perform pupil identification to determine a pupil position in response to detecting a face in the preview image, thereby a light-shielding area of the light guide is determined according to the pupil position;
• and
• a diastimeter for detecting a distance between a capturing target and the fill light device, thereby a light-emitting angle of the fill light device is determined according to the distance between the capturing target and the fill light device, to obtain a control parameter of the light guide;
• wherein the light guide is configured to be controlled to change a shape and/or a light-transmitting area according to the control parameter to change a light-exiting area and/or the light-emitting angle of the fill light device.