Appendix BU-02: Laser Pointer Guidance
Appendix BU-02: Laser Pointer Guidance
Laser pointers are readily available to all individuals and can be obtained from the Internet, electronic stores, and novelty stores for a marginal cost.
Laser pointers must provide warning labels, as required by the FDA Center for Devices and Radiological Health (CDRH). Each label must include the laser hazard symbol, laser classifications, maximum power output and operating wavelength(s). In addition, both ANSI and the International Electro Technical Commission (IEC- 60825-1) standards are applicable.
Laser Pointer Characteristics:
Diode laser pointers operate in the visible range of 400-760 nanometers (nm). Power emitted by these lasers range form 1-5 mW. Eye damage may occur from the unsafe usage of laser pointers. A hazardous exposure can occur from a prolonged direct beam exposure or from a specularly reflected beam. There is no known associated skin hazard with laser pointers.
The majority of red and green laser pointers are rated as Class 2 or 3R. Please do not purchase higher-powered laser pointers as they may be hazardous and require extensive administrative and safety measures.
Green Laser Pointer:
Green laser pointers are discouraged from use because they are more likely to be classified as a higher hazard class and may pose an eye hazard. Green laser pointers produces a wavelength of green light at 532 nm that is more readily absorbed by the human eye. At this wavelength, the human eye is much more sensitive to green light and the laser light will appear brighter. Estimates for the human eye sensitivity for green lasers ranges from 10 times to 50 times more sensitive than that of red laser sensitivity. The best practice is to use a red laser pointer and follow all manufacturer safety notices.
Laser Safety Pointer Recommendations:
- Do not intentionally aim any laser beam directly at your eyes or the eyes others, regardless of classification.
- Do not point a laser at a mirror or other shiny objects that exhibit reflective properties.
- Do not aim a laser pointer at any individuals, automobile, plane, train, or building window.
- Do not purchase a laser pointer that has an output power of greater than 5 mW and without proper warning labels.
- Do not purchase laser pointers that are classified as greater then Class 2 for use in training or meetings.