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标题: [求助]有没有激光产品安全分类标准 [打印本页]

作者: aihua1675 时间: 2005-11-4 00:03
标题: [求助]有没有激光产品安全分类标准
各位高手，我想知道有没有激光产品安全分类标准啊，有的是3A类激光产品，有2类激光产品，怎么分类的？请教各位！谢谢！

作者: billyexpert 时间: 2005-11-4 09:40

是按照激光的功率分类的，0.4mw-1mw是2类，1mw到5mw是3A类。

作者: 雨纷飞 时间: 2006-8-10 02:08
激光产品的安全第1部分：设备分类、要求和用户指南的具体内容有没有人知道啊？急需！！！

作者: shizh 时间: 2006-8-16 01:04

Class I lasers - Lasers that are not hazardous for continuous viewing or are designed in such a way that prevent human access to laser radiation. These consist of low power lasers or higher power embedded lasers (i.e., laser printers).
Class II visible lasers (400 to 700 nm) - Lasers emitting visible light which because of normal human aversion responses, do not normally present a hazard, but would if viewed directly for extended periods of time. (like many conventional light sources).
Class IIa visible lasers (400 to 700 nm) - Lasers emitting visible light not intended for viewing, and under normal operating conditions would not produce a injury to the eye if viewed directly for less than 1,000 seconds (i.e. bar code scanners).
Class IIIa lasers - Lasers that normally would not cause injury to the eye if viewed momentarily but would present a hazard if viewed using collecting optics (fibre optics loupe or telescope).
Class IIIb lasers - Lasers that present an eye and skin hazard if viewed directly. This includes both intrabeam viewing and specular reflections. Class IIIb lasers do not produce a hazardous diffuse reflection except when viewed at close proximity.
Class IV lasers - Lasers that present an eye hazard from direct, specular and diffuse reflections. In addition such lasers may be fire hazards and produce skin burns.

Here is another description, paraphrased from the CORD course: "Intro to Lasers". (Cord Communications. Lasers.) It relates the laser classifications to common laser types and power levels:

Class I - EXEMPT LASERS, considered 'safe' for intrabeam viewing. Visible beam.

Maximum power less than 0.4 uW. This will not cause damage even where the entire beam enters the eye and it is being stared at continuously.

Class II - LOW-POWERED VISIBLE (CW) OR HIGH PRF LASERS, won't damage your eye if viewed momentarily. Visible beam.

Maximum power less than 1 mW for HeNe laser.

Class IIIa - MEDIUM POWER LASERS, focused beam can injure the eye.

HeNe laser power 1.0 to 5.0 mW.

Class IIIb - MEDIUM POWER LASERS, diffuse reflection is not hazardous, doesn't present a fire hazard.

Visible Argon laser power 5.0 mW to 500 mW.

Class IV - HIGH POWER LASERS, diffuse reflection is hazardous and/or a fire hazard.

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