CO_2激光测距机有三个主要的优点:对人眼安全;对烟尘雾有良好的穿透能力;能够与8—13微米的热观察装置兼容。据分析,超过1.4微米的辐射就不会聚焦在人眼的视网膜上。对于10.6微米脉冲激光器,国际上公认的对人眼的损伤极限为100焦尔/米~2。这个数值比可见光的损伤极限大20,000倍。对于单次发射的 CO_2激光测距机,当脉冲宽度为60毫微秒, The CO2 laser rangefinder has three major advantages: it is safe for the human eye; it has good penetration of the soot; it is compatible with 8-13 micron thermal observation devices. According to the analysis, more than 1.4 microns of radiation will not focus on the human eye retina. For the 10.6 micron pulsed laser, the internationally accepted eye damage limit is 100 J / m 2. This value is 20,000 times greater than the damage limit of visible light. For single-shot CO2 laser range finder, when the pulse width is 60 nanoseconds,