Outdoor Laser Safety Considerations
Aviation notifications, weather contingencies, and environmental factors unique to outdoor shows.
Outdoor laser shows introduce hazards that don't exist indoors: uncontrolled airspace, unrestricted public access, weather, wildlife, and vastly larger exclusion distances. Your safety management needs to step up accordingly.
Aviation is the highest-priority consideration. In Australia, CASA AC 139.E-03 (December 2024, superseding AC 139-23(0)) defines protected airspace around aerodromes. Any beam that could enter navigable airspace must be assessed. For upward-pointing beams, this means calculating the irradiance at every altitude the beam could reach and confirming it's below the MPE for pilots. In practice, you need to notify CASA early — weeks before the event, not days. They may impose conditions including NOTAMs, restricted beam angles, or real-time aviation monitoring.
In New Zealand, CAA NZ Part 77 has similar requirements. Engage with Airways NZ for NOTAM coordination. The penalties for laser interference with aircraft are severe in both countries — including imprisonment.
Weather changes everything outdoors. Wind can shift projector positions on temporary structures. Rain creates reflective surfaces everywhere (wet ground, pooled water, equipment surfaces). Fog and low cloud can scatter beams unpredictably. Temperature drops can affect projector performance and cause condensation on optics. Your contingency plan must include weather-triggered suspension criteria — define them before the show, not during.
Public access is uncontrolled at most outdoor events. Fences and barriers can be climbed. People wander into restricted areas, especially after dark when zones aren't visible. Security briefing is essential — your security team needs to understand that entering the beam zone is a safety issue, not just a trespassing issue.
Environmental regulations vary by location. Some councils require light pollution assessments. Events near residential areas may have complaints about laser beams visible from homes. Wildlife can be affected — birds are attracted to or disoriented by beams. Outdoor events near water create reflection hazards from the water surface.
Quick tips
- •Submit your CASA/CAA notification as early as possible — late applications may be refused
- •Have a weather station or app running on-site with wind speed alerts
- •Use ground-level barriers AND overhead beam blocks where possible
- •Brief security staff specifically on laser zones — they need to know why, not just where
- •Check the lunar calendar — a full moon night needs less atmospheric effect, but a clear night means beams travel further
Want to learn more? The LSO Certification course covers this topic in depth with interactive exercises, quizzes, and a final exam. Module 1 is free to preview.