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Strobe Lights
A strobe light, also shortly referred to as a strobo, is a spotlight that generates regular flashes of light. They are available in different sizes and power classes. The frequency of the generated flashes is variable in the range of about 1 Hz to about 12 Hz. This means a flash of light is generated from 1 to 12 times per second.
Especially in the discotheque, strobes create interesting effects on the dance floor. From usage in the party cellar to professional stage shows: a strobe light is part of the basic equipment.
The Strobe Effect
In an otherwise dark room, strobe light has the effect of making movements choppy. The flashes allow us to perceive an image only a few times per second. Instead of seeing a smooth motion, we see a sequence of still images. As a result, movements appear to happen in slow motion.
Rapidly rotating objects, such as fans, can even appear to be still. The strobe effect works best when there isn't too much competition from other light sources. Only then can the "slow-motion" effect fully unfold. But that's not the only use! You can also use a strobe light to generate a "flash" with individual flashes that perfectly supports the music.
Together with music, this effect is very effective for creating impressive rhythm experiences. But even as a component of stage lighting, the strobe effect is remarkable.
How Is the Flash Generated?
Traditional strobe lights have a xenon discharge lamp, which can generate very bright flashes. The newer LED strobe light is often a normal spotlight with an additional strobe effect. In head-moving systems with discharge lamps, a strobe effect is generated by fast shutter movements.
Control
Strobe lights with 1/10 V control can be influenced in their frequency through a dial. They often also have jack inputs to connect a controller. However, those who want to integrate the effect precisely into their light show and control it via a lighting console need a DMX connection.
Health
Sometimes the strobe effect can trigger a seizure in photosensitive epileptics. At frequencies above 12 Hz, the risk may increase. Most commercially available strobe lights flash only in the range from 1 to 12 Hz. For events where the visitor doesn't necessarily expect strong light effects, it may be appropriate to place a warning sign at the entrance.
What Should I Consider When Buying a Strobe Light?
- Technology: Strobe light or spotlight with strobe light function?
- Beam angle: Do I want to illuminate an entire room or just a specific stage area?
- Size: Will it be permanently installed or do I need to take it on tour more often?
- Power: What size of room do I want to illuminate?
- Control: Is a 1/10 V control sufficient or do I need a DMX connection?