The invention provides a high-precision
laser welding temperature measurement optical device and
system, and the device comprises a
welding mechanism which comprises a
laser transmission joint, a light path transmission lens and a dual-band achromatic field lens, and the light path transmission lens is disposed between the
laser transmission joint and the dual-band achromatic field lens; and the temperature detection mechanism comprises a
temperature measurement sensor and a temperature
signal processor, and the
temperature measurement sensor is in
signal connection with the temperature
signal processor. According to the laser
welding device, laser welding
machining is conducted on the to-be-welded element through the welding mechanism, effective overlapping and synchronous follow-up of double light spots can be guaranteed through the double-waveband achromatic field lens, and therefore the purpose of guaranteeing the consistency and quality stability of the
welding process is achieved. In the process, the temperature detection mechanism can analyze and monitor the welding heat according to the feedback laser, and compared with existing conventional laser welding equipment, the laser welding equipment has the advantages of being high in welding quality, capable of achieving real-time monitoring, accurate in temperature detection, high in effect speed, wide in application range and the like.