ANSI Z American National Standard for Safe Use of Lasers and the history of lasers and laser classes. ANSI Z and Z Combination Set. Safe Use of Lasers and Testing and Labeling of Laser Protective Equipment (Historical Package). ANSI Z and. ANSI Z American National Standard for Safe Use of Lasers Z 1 provides guidance for the safe use of lasers and laser systems by defining.

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Subscription pricing is determined by: This newly revised standard will contain several important additions and changes to the last ANSI Z Most current Class 2 will remain Class 2 or will become 2M if they possess a highly divergent beam. The great proliferation of these devices has made it more likely that individuals who are not familiar with appropriate safety precautions would use them.

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ANSI Z – American National Standard for Safe Use of Lasers

With advances in laser device technology driving new designs, the new laser pointers generally contain a diode laser that is classified as Class 3a. With the emergence of new biological data for sub-nanosecond pulses, more precise and less conservative 11 is provided in the new standard for ultrashort pulses down to femtoseconds in the retinal hazard region of 0.

The new standard also facilitates the methodology of dealing with small and extended sources. The process for conducting hazard evaluation and analysis is thus greatly simplified, and would be welcome by laser safety officers and others who are asi with the responsibility of performing laser hazard evaluation and classification as part of an overall hazard analysis.

The new standard revises the tables containing MPEs, and methods by which hazard evaluation anzi laser classifications are done for ocular exposure of small intrabeam viewing and extended source viewing.

Laser Pointers In the past several years the use of laser pointers has proliferated significantly. While it is unlikely that momentary exposure to laser pointers will cause permanent retinal damage, exposure to these devices can cause other visual impairment. In general, the guidance based upon the new data is less stringent than the corresponding guidance in the previous version of the standard.


This clearly produced a conservative approach to the hazard evaluation for such sources.

For pulses shorter than 10 —9 seconds, the guidance was to employ the MPE for 1 ns. We have no amendments or corrections for this standard. Asi IEC recognizes that their current classification scheme is problematic particularly as it relates to evaluations with and without optically aided viewing. Thus in the visible part of the spectrum, Class 2 range is 0.

All current Class 1 lasers will become Class 1 and Class 1M. This standard is also available in these packages:. The biological data thus produced provides the basis for extending the formalism and hazard limits into new parameter space. The new triangular symbol is introduced into both the “Caution” and “Danger” signs. Please first verify your email before subscribing to alerts. The Anso Measures section of the new standard specifically treats safety issues associated with laser pointers, and provides guidance for the safe use of these products.

Separate tables are provided for dealing with the two distinct viewing conditions, and dual limits photochemical and thermal for the appropriate spectral range are provided.

Standards Subsctiption may be the perfect solution. Class 3R for reduced requirements is for laser products that are marginally safe for intrabeam viewing.


The most important changes contained in the newly revised standard are described below. Maximum Permissible Exposures MPEs The new standard revises the tables containing MPEs, and methods by which hazard evaluation and laser classifications are done for ocular exposure qnsi small intrabeam viewing and extended source viewing.

Available for Subscriptions Available in Packages Standard is x136 in: The new hazard signs contain zz136 equilateral ani attention symbol in addition to the familiar sunburst pattern.

The appendix contains numerous examples that illustrate and clarify the application of the new methodology. Need more than one copy? Once a laser or laser system is properly classified, there should be no need to carry out tedious measurements or calculations to meet the provisions of this standard. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. Flashblindness, afterimage, and glare can occur as a result of exposure to laser pointers and may result in visual dysfunction that can affect visual-critical activity such as driving or flying.


This standard is also available to be included in Standards Subscriptions.

New Revision of ANSI Z136.1 (Laser Safety Standards)

The ANSI Z specifies sign dimension, lettering size, color, and other important sign design elements. A practical means for accomplishing this is to 1 classify lasers and laser systems according to their relative hazards and to 2 specify appropriate controls for each classification. In the absence of accepted biological data, the previous standard only provided MPE data for pulses down to 10 —9 seconds, or one nanosecond ns. Guidance is also offered wnsi the use of laser eyewear in conjunction with ultrashort pulses.

New Revision of ANSI Z (Laser Safety Standards)

Once adopted by ANSI, corresponding changes will be have to be made in the Control Measures and Measurement sections to account for the added requirements. Visit the LIA website at http: Class 1M is composed of lasers, which are incapable of causing eye damage except when viewed with optical instruments. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.

Your Alert Profile lists the documents that will be monitored. Join or Renew Members Only. Already Subscribed to this document. Please first log in with a verified email before subscribing to alerts. They are routinely used in demonstrations, wnsi, educational, and numerous other applications.