- 1. Check the power and spot diameter when purchasing
- 2. Look at the classification of laser lights
- 3. Look at the actual effect of voice control
- 4. Look at the artistic effect of text animation
Precautions for purchasing stage laser lights
Table of Contents
In addition to professional-grade computer moving head lights and new LED stage lights, stage lighting also has stage laser lights that are timeless. Stage laser light is a laser product that can automatically produce various laser beams, laser patterns, and laser characters with the rhythm of music. A new product.
When purchasing laser lights, you should pay attention to the following points:
1. Check the power and spot diameter when purchasing
The beam of laser light is fatal to human eyes, the greater the power, the more dangerous! If the spot diameter is less than 2mm and the power is greater than 100mW, if the stationary green laser beam directly hits the human skin, it will disappear within a few seconds There is a burning sensation. When the same spot, the green laser beam with a power greater than 300mW is directly irradiated on the clothes, the clothes may be burned through within one minute. Therefore, never look directly at the stationary laser beam!
During the laser show, the laser beam is scattered by high-speed galvanometer scanning. Although the power of the laser is relatively high, the laser power density per unit area after scanning is already very low, and it usually does not cause irreversible damage to human eyes. . However, if the laser beam suddenly stops moving during the normal scanning process due to a fault in the circuit or the scanning mirror, and this laser beam happens to hit your eye, then it depends on your luck. If it is light, your eyesight will decrease obviously, if it is serious, you will lose your sight immediately!
The laser show looks good, but it is very dangerous! In order to solve this problem, developed countries such as Europe and the United States have developed a set of "laser scanning out of control protection" technology. After the laser light is equipped with this technology, when the laser beam stops scanning unexpectedly, the laser will be automatically closed immediately. Therefore, in order to protect the eyes of you and your customers, you must pay attention to whether the product has the function of "laser scanning out of control protection" when purchasing laser demonstration products, and verify this function.
2. Look at the classification of laser lights
At present, there are two types of laser lights on the market from the classification of scanning devices. One is the simple beam scanning laser light. This type of laser light uses a low-speed stepping motor to scan, and its effect is only some simple and repetitive beam effects. The other type is the galvanometer scanning laser light, usually this type of laser light can put text and animation. The galvanometer scanning laser light can be divided into low-speed text animation laser light of about 10Kpps and ILDA standard >30Kpps high-speed medium-high speed text animation laser light. Low-speed galvanometer scanning laser lights are usually unable to project complex and high-quality text or animation, nor can they produce "multiple pattern special effects" effects. Maocheng uses >30Kpps high-speed galvanometer to develop medium and high-end text animation laser lights, which can not only put high-quality text and animation, but also put "multiple pattern special effects" effect.
3. Look at the actual effect of voice control
Now many laser lights have "voice control" function, this "voice control" is actually a very simple volume trigger laser playback function, the effect is simple and monotonous. And "laser music synchronous synthesis and playback" is to synchronously synthesize the laser effect data and the relevant rhythm data of the music and then play them together. In this way, with the cooperation of the background music, the laser is played synchronously with the rhythm of the music in an orderly manner. The effect is usually The "voice control" effect is incomparable.
4. Look at the artistic effect of text animation
At present, many so-called text animation laser lights on the market have no "broken pen" effect, and the artistic sense of text animation is very poor. The so-called "broken pen" means that when placing characters, there should be no laser connection between the strokes of the same character, or between two characters. Generally, low-end laser lights have no "broken pen" effect, and the text or animation they project has a great degree of distortion.
5. See if it has "multiple laser pattern stunts"
If the laser light or performance system has the function of "multi-pattern special effects", then the effects it can deliver will be more abundant. It can be simply said that such a single-head laser light can be used to deliver a combination equivalent to two ordinary single-head laser lights. Effect.
6. Look at the advantages and disadvantages of the performance of the "galvanometer"
The galvanometer is a key component that directly affects the quality of pattern delivery. Usually, a good galvanometer can deliver more characters with the same fidelity; or with the same number of characters, the distortion of the characters it puts out is smaller. The galvanometer that can put high-quality text can also put high-quality laser effect patterns with more effects.
7. Check whether the "DMX512" is intelligent or not
Many laser lights on the market that claim to be "DMX512 controlled" basically have no programming function, just simple pattern calls, and the effect of such laser lights is usually relatively monotonous. The "multifunctional DMX512 intelligent programming" provides powerful programming and pattern effect editing methods. Laser lights with such functions can directly edit laser scene effects and programs through the DMX512 console, and at the same time can combine laser effect scenes with traditional stage The scene effects of lighting are organically combined. In short, you can mix such laser lights with computer lights controlled by DMX512 to achieve the perfect combination of laser effects and lighting effects.
8. Check whether the indicators meet ILDA international standards
If the manufacturer of the laser light is not a member of ILDA, then its products are usually not designed according to this standard, otherwise it will increase a lot of cost.
9. See how the dust-proof sealing measures are
There are some optical reflective lenses inside the laser light. If there is no dust-proof sealing measure inside, then dust and smoke oil will quickly pollute the lens, so the reflection efficiency will be reduced. The laser light needs to be cleaned after a period of use, otherwise the brightness will be reduced. will get very dark. However, if it is cleaned frequently, the high reflective film on the lens will be destroyed, and the reflection efficiency will be lower. Therefore, although the brightness of the laser light without dust-proof sealing measures is OK when you first buy it, it will not take long, and it may become very dim after 1-2 months.
To judge whether a laser light has dust-proof measures, you only need to see if there is a dust-proof glass at the laser output port. If not, it must be that the manufacturer did not take dust prevention measures in order to save costs. Such a laser light is actually very cost-effective, because its actual service life is very short. Therefore, when purchasing laser lights, you must pay attention to whether there are dust-proof measures. If you are a dealer or an engineering company, your customers will ask you to replace the laser lights within 1-2 months due to the decrease in laser brightness. Do you feel very uncomfortable? trouble?
10. Check whether the detection power nominal is true
At present, many laser lamp manufacturers in China, probably due to the lack of laser professional knowledge, often intentionally or unintentionally use false (high) laser power to mislead customers in order to achieve the purpose of promoting sales. Often the 50mW laser is rated as 100mW, and the 500mW green laser is rated as 1000mW. If there is no laser expertise, experience or measurement tools, it is really difficult to identify the actual power of the laser light. If you have doubts about the actual power of the laser light, the easiest way is to compare the two laser lights on site, or consult the laser. expert.
Laser lights have the advantages of bright colors, high brightness, good directivity, long range, and easy control. They look more magical and dreamy, so they are generally used in buildings, parks, squares, theaters, and various performances. The non-divergence of the laser beam can attract people's attention as far as several kilometers away, and the point of laser emission has also become the focus of people's attention. If the laser light is placed on a high-rise building or a scenic spot on the top of a mountain, the beam will shoot into the distance, and a bright green light will appear in the sky, which is very dazzling. The beam can swing up and down, left and right, and its magical and gorgeous appearance can be enjoyed within a few kilometers.
If it is used outdoors, for example, the laser light emitted by the laser light is directed at the water curtain, building or wall, etc., and the laser moves rapidly under the control of the scanning system to form characters, patterns, etc. for viewing.
As for indoor viewing, for example, laser lights are installed in theaters, nightclubs, dance halls and other places. With a certain amount of dry ice smoke, the laser beam is shot at the smoke and scanned, and text, pattern, and animation effects can also be formed. It can also play a fierce laser show with music, and the colorful and bright colors are intoxicating! Of course, laser lights are most commonly used in nightclubs, dance halls, various performances, theaters, outdoor advertisements and landmarks, etc.