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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The new hazard signs contain an equilateral triangle attention symbol in addition to the familiar sunburst pattern. With the emergence of new biological data for sub-nanosecond pulses, more precise and less conservative guidance is provided in the new standard for ultrashort pulses down to femtoseconds in the retinal hazard region z1366 0.

The ramifications of these changes are relatively small. Guidance is also offered in the use of laser eyewear in conjunction with ultrashort pulses.

New Revision of ANSI Z (Laser Safety Standards)

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 of small intrabeam viewing and extended source viewing.

While it is unlikely that momentary exposure to laser pointers will cause permanent retinal damage, exposure to these devices can cause other visual impairment. Class 1M is composed of lasers, which are incapable of causing eye damage except when viewed with optical instruments. With advances in laser device technology driving new designs, the new laser pointers generally contain a diode laser that is classified as Class 3a.


The new triangular symbol is introduced into both the “Caution” and “Danger” signs. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.

In the past several years the use of laser pointers has proliferated significantly. This should be contrasted with previous generations of laser pointers that were based on HeNe lasers and were generally classified as Class 2.

Already Subscribed to this document. The most important changes contained in the newly revised standard are described below. Once adopted by ANSI, corresponding changes will be have to be snsi in the Control Measures and Measurement anxi to account for the added requirements. This would allow users to better prepare for eventual adoption of these changes. This standard is also available in these packages:. As the voice of the U.

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

The appendix contains numerous examples that illustrate and clarify the application of the new methodology. Please first log in with a verified email before subscribing to alerts. Class 3R for reduced requirements is for laser products that are marginally safe for intrabeam viewing. The IEC recognizes that their current classification scheme is problematic particularly as it relates to evaluations with and without anwi aided viewing.


Standards Subsctiption may be the perfect solution. However, technical information on measurements, calculations and biological effects is also provided within the standard and its appendixes.

ANSI Z – American National Standard for Safe Use of Lasers

Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. The ANSI Z specifies sign dimension, lettering size, color, and other important sign design elements.

Subscription pricing is determined by: Need more than one copy? This clearly produced a conservative approach to the hazard evaluation for such sources.

Currently few differences exist between the two standards. We have no amendments or corrections for this standard. Three new classes of lasers are being created 1M, 2M and 3R. Similarly Class 2M applies to visible lasers which are safe when viewed by the unaided eye for up to 0. The new standard also facilitates the methodology of dealing 1z36 small and extended sources.

The biological data thus produced provides the basis for extending the formalism ansk hazard limits into new parameter space.