Rectangular uniform sheet light source debugging method and device

The invention provides a rectangular uniform sheet light source debugging method and device, and the method comprises the steps: detecting the optical power of a sub-laser through a detection surface which is densely provided with sensor units, converting an oval region, which is illuminated by one or more sub-lasers, on the detection surface into a corresponding rectangle with relative width and length, a plurality of sub-power areas are divided according to the heat absorbed by the illuminated area, each sub-power area displays the average power, the average power is represented by numerals and block areas with different colors, and the sub-lasers and the optical system are adjusted through the displayed numerals and colors. According to the invention, the relative width, length and power of one or more sub-lasers in a detection surface illumination area can be displayed in a humanized manner, the convenience of an operator in a light source adjustment process is improved, and the rapid adjustment of the un