Web-Based Laser Safety Hazard Analysis System: The Evaluator

Now with three monthly subscription packages and pricing levels to choose from: Advanced, Intermediate, or Basic, your organization has the flexibility to pay for only the features it needs.

This innovative System provides a reliable way to easily double-check laser safety calculations. It is based on the ANSI Z136.1 American National Standard for Safe Use of Lasers and will perform repeated calculations of maximum permissible exposure (MPE), optical density (OD), nominal ocular hazard distance (NOHD), nominal hazard zone (NHZ), and laser hazard classification.

The Evaluator Benefits

  • Change laser settings by easily switching between CW, Single Pulse or repetitively pulsed lasers as well as adjusting the beam profile (circular, elliptical or rectangular)
  • Designed for today’s LSO – save reports*, view graphs* and make suggestions for new features
  • Easy Navigation, Accurate Results! More options to fine tune the accuracy of your calculations
  • Any revisions to the standard during your subscription will be immediately reflected in the system
  • Definitions and references from the current ANSI Z136.1 standard provided for keywords and acronyms
  • Experiment with various laser, eyewear or barrier combinations with enhanced interactive graphic displays
  • Graphically illustrates use of eye protection, shows difference between

Pick the Subscription Level that Works for You & Your Budget!

One of the big advantages of the new Evaluator System is that you can choose the subscription level that fits your specific needs–Advanced, Intermediate or Basic. Why pay more for features you may not need? This budget-friendly option is perfect for organizations that may only need the Basic or Intermediate calculation features. Plus, you can easily upgrade or downgrade to any subscription level at any time—making it a flexible and scalable solution for dynamic organizations.


Perfect for the professional LSO working in research facilities, government, military, and advanced laboratories, the Advanced subscription level includes the most comprehensive features available for performing sophisticated laser calculations.



Our most popular subscription level, the Intermediate package provides the best solution for industrial applications and organizations where laser safety calculations are needed for eye and skin hazards.



Specially designed for users with minimal experience, the Basic package provides the essential and fundamental laser hazard calculations in an easy and simple format.


Free OD Calculator

This convenient online tool will calculate what optical density is recommended for use with a laser system of a given power.