Optical protection is to protect the personal safety stamping machine operators one of the most effective optical protection, than the protective fence, mechanical handle, mechanical dial hands and other protective devices to protect better, to avoid improper operation of the production process or machine malfunction caused by security incidents. For general press, high-performance presses, mechanical presses, hydraulic presses, lamination machine, shearing machine, industrial robots, packaging equipment and other automated equipment can also be used for multi-faceted regional protection or security. Optical protection is generally divided into the radio and reflective types. ·????-Beam photoelectric protection device is emitting unit, respectively, in the light-emitting device unit, a light inside, the light emitted by the light emitting unit direct to the light units, which form a protective screens photoelectric protection device. Beam photoelectric protection by the controller, the light-emitting device, a light emitting device and a light transmission lines and transmission line composed of five parts, shown in Figure 1. ·???? Reflective photoelectric protection device is emitting unit and the light units are in the same sensor, the light emitted from the light emitting element is reflected back through the reflector light units, which form a protective screens photoelectric protection device. Emitter and reflector is formed between the two parts of security protection screen. Whenever security screen interference or device is not working properly, the light emitting device are transmitted signal, transmitted to the press control system in order to prevent possible danger sport, stop hammer downside risk. Reflective photoelectric protection by the controller, sensors, reflectors, the transmission line composed of four parts