Buy stage laser light method

1, power and spot diameter size

Laser beam of light on the human eye have fatal injuries, the more power the more dangerous! Spot diameter less than 2mm, the power is greater than 100mW of stationary green laser beam, if it directly to the human skin, then within a few seconds Burning sensation When the same spot, the power of more than 300mW green laser beam directly onto the clothes, within a minute, the clothes may be burned through. So, absolutely can not look straight motionless laser beam!

2, the classification of laser lights

Currently on the market of laser light, from the scanning device on the classification of two categories. One is the simple beam scanning laser light, such laser light scanning using low-speed stepper motor, the effect is only some simple repetitive beam effect. The other is the galvanometer scanning laser light, usually this type of laser light can put text and animation. Galvanometer scanning laser light, but also can be divided into low-speed 10Kpps text animation laser light and ILDA standard> 30Kpps high speed medium and high block text animation laser light. Low-speed galvanometer scan laser usually can not put complex high-quality text or animation, can not be a "multi-pattern effects" effect. Mao-Cheng> 30Kpps high-speed galvanometer developed by the high-grade text animation laser light, not only can put high-quality text and animation, you can also put "multi-pattern effects" effect.

3, to see the actual effect of voice control

Now many laser lights have "voice" function, the "voice" is actually a very simple volume-trigger laser playback, the effect is simple, monotonous. The "laser music sync synthetic playback" is the laser effect data and music related rhythm data synchronized with the synthesis of play, so with the background music, the laser light in an orderly manner and pace of music playback, the effect is usually The "voice" effect can not be compared.

4, look at the artistic effect of text animation

Currently on the market a lot of known text animation laser lights are not "broken pen" effect, the art of text animation is very poor. The so-called "broken pen" is when putting the text, the same word strokes, or between two words should be no laser connection. Normally, low-end lasers do not have a "broken pen" effect, which puts a great deal of text or animation in distortions.

5, to see if there is "multiple laser pattern stunt"

A laser or performance system can have a richer effect if it has the "Multi-Pattern Effect" feature, so simply put it, a single-head laser can deliver the equivalent of a combination of two ordinary single-head laser lights effect.

6, look at the "galvanometer" the pros and cons of performance

The galvanometer is a key component that directly affects the quality of the pattern. Generally, the good galvanometer can put more words under the same fidelity, or the text with less distortion in the same number of characters. High-quality text can be placed in the galvanometer, but also put high-quality, more effect laser effect pattern.

7, to see "DMX512" smart or not

Many on the market claim that the "DMX512 control" laser lights are basically no programming function, just a simple pattern call, such a laser light is usually more dull. The "multi-function DMX512 intelligent programming," provides a powerful programming and pattern effects editing tools, with such a function of the laser light can be directly through the DMX512 console to edit the laser scene effects and procedures, while the laser effects can be the scene with the traditional stage Light scene effects organic combination, in short, you can put such a laser light and DMX512 control computer lights mixed use, you can achieve the perfect combination of laser effects and lighting effects.

8, to see if the indicator is in line with ILDA international standards

If the manufacturer of the laser light is not a member of the ILDA, then its products are usually not designed to this standard, otherwise it will add a lot of cost.

9, to see how the dust seal

Laser light there are some internal optical reflex lenses, dust-proof seal if the internal measures, then the dust and tobacco will quickly pollute the lens, so the reflection efficiency will be reduced, the laser light used for some time after cleaning, or brightness Will become very dark. However, regular cleaning, high-reflective film on the lens will be destroyed, the reflection efficiency is lower. So there is no laser dust sealed measures, although the brightness just bought can feel, but in less time, it may be 1-2 months after it becomes very dark.

Determine whether there is a laser light dust-proof measures, as long as it see the laser output is not a piece of dust-proof glass. If not, it is definitely the manufacturer in order to save costs, did not take dust-proof measures. Such a laser light, in fact, the price is very poor, because of its very short useful life. So when buying laser lights must pay attention to whether there are dust-proof measures.