Light -emitting timing device based on stable back of laser power

The utility model discloses a light -emitting timing device based on stable back of laser power, include laser instrument, highlight light source, regulation pole, three -way pipe, valve, gas cylinder, fastening screw, base, photodiode, countdown, lens hood, supporting seat, first light screen subassembly, second light screen subassembly, fastening nut and go up the light screen. The utility model discloses low cost, simple easy maintenance, job stabilization. Because the utility model discloses a just begin the timing after laser power is stable, so use the utility model discloses can make solid propellant's ignition delay time measurement more accurate, the fluctuation of experimental data diminishes, and the credible of experimental result improves.