Method for calibrating a light of a three-dimensional object generating apparatus

A method for calibrating a light of a three-dimensional (3D) object generating apparatus adapted to a 3D object generating apparatus comprising a housing, an optical-transparent component, and a laser light generator, the housing comprising an accommodating space and an opening communicating with the accommodating space, the optical-transparent component arranged on the opening, the laser light generator is arranged on one side of the optical-transparent component and located within the accommodating space, and is used for curing a fluid medium arranged on the other side of the optical-transparent component and in a working region, the method comprising:

• providing a first photodetector and a controller, wherein the controller is electrically connected to the first photodetector and the laser light generator;
• using the controller to drive the laser light generator to generate the light and perform a scanning procedure;
• and
• stopping the scanning procedure when the first photodetector detects the light generated by the laser light generator, wherein the first photodetector is arranged corresponding to a first light calibration region adjacent to the working region, and then performing a 3D object generating procedure in the working region by moving the laser light generator toward the working region with a preset distance;
• wherein the first photodetector and the laser light generator are arranged at the same side of the optical-transparent component;
• wherein the preset distance is equal to or larger than a distance between a central axis of the first photodetector and an interface between the first light calibration region and the working region.