目测是无害的，楼主担心可以研究一下那些光的具体波长是多少，根据铭牌google一下 Laser bar code scanners of all types have traditionally used lasers rated as Class 2 by the FDA.1 These lasers have a maximum laser power output of 1.2 mW (milliwatts). Class 2 lasers, often called “low-power” or “low risk” laser systems, are safe to use and can only cause eye injury if you stare into the laser beam for an extended period of time.
via https://www.socketmobile.com/docs/default-source/white-papers/techbriefpatientcare.pdf?sfvrsn=2
何妹
目测是无害的，楼主担心可以研究一下那些光的具体波长是多少，根据铭牌google一下
Laser bar code scanners of all types have traditionally used lasers rated as Class 2 by the FDA.1 These lasers have a maximum laser power output of 1.2 mW (milliwatts). Class 2 lasers, often called “low-power” or “low risk” laser systems, are safe to use and can only cause eye injury if you stare into the laser beam for an extended period of time.
via https://www.socketmobile.com/docs/default-source/white-papers/techbriefpatientcare.pdf?sfvrsn=2