Anyone who has witnessed a professionally staged laser show will hardly forget it. Laser projectors that not only project light patterns and shapes onto a surface but also beam them into the room are particularly popular. To ensure the lighting effect stands out, a hazer is often used to fill the room with artificial mist, allowing beams and shapes to extend visually into the audience.
Lasers, much like stage spotlights, can either be mounted on trusses or placed directly on the stage floor. In some cases – for example, when projecting effects above the audience – lasers are positioned outside the stage area. Every additional laser enhances the event by adding a new visual dimension. However, powerful lasers must be handled carefully, as improper use may pose risks to the eyes or skin. Therefore, specific safety standards must be observed. Laser output is classified between Class 1 and Class 4. For public events, a certified laser safety officer is required for Classes 3a and 3b.
If a laser is to be used outdoors, it must be specifically designed for outdoor operation.
This abbreviation refers to the three basic colours red, green and blue, which are used to mix all other colours. Even white light effects are created by combining these colours. To achieve a striking, varied display rather than a monotone beam, RGB laser technology is highly recommended.
Laser technology has become affordable even for smaller productions. However, usage should be carefully planned to ensure that the laser’s power, measured in milliwatts (mW), is appropriate for the venue. A 50 mW laser, for instance, is ideal for small party rooms. DJ lasers usually fall within safety Class 3b up to around 500 mW.
In addition to single-colour lasers available at a low cost, the market also offers multi-colour RGB lasers for smaller spaces and high-powered diode lasers for large-scale events that belong to Class 4.
Since laser beams move through space, scanning speed indicates how fast the mirrors that deflect the beam operate. For best results when projecting laser graphics, a high scanning speed such as that provided by Galvo scanners is recommended.
Nearly all stage lasers feature DMX connections for processing control signals. These can be operated manually using a DMX controller or DMX software or can run as part of a pre-programmed show. Many models also include sound or automatic modes. For users who prefer not to work with complex software or professional controllers, some lasers include accessories such as remote controls for certain effects or small keypads to enter text that the laser can project.
This port follows a standard protocol for transmitting control signals to laser devices. The control data, typically sent from software, can be transmitted flawlessly over long distances using an ILDA cable. ILDA ports are commonly found on professional laser units rather than entry-level models.
An interlock switch is essential for high-powered lasers, acting as an emergency stop in case of malfunction. Many high-end models also include a key-lock system to prevent unauthorised operation.
Due to the high concentration of light energy in a narrow beam, laser radiation can pose a potential hazard. Direct exposure to the beam can cause serious eye injuries. However, when the beam is deflected – as is typically the case in compact show laser systems with scanning units – the risk is significantly reduced.
Lasers and laser-containing devices are classified into safety classes according to the British Safety Standard for Laser Radiation (BS EN 60825). Most compact show lasers on the market, including those offered by us, belong to Classes 3a or 3b. These devices require official authorisation for use. For public events, a qualified laser safety officer must be appointed in compliance with UK Health and Safety regulations.
For installations in public venues (clubs, halls, theatres, etc.), systems must comply with local safety inspections by the relevant authorities. Always adhere to UK laser operation regulations and safety guidelines provided by the Health and Safety Executive (HSE) or equivalent institutions.