Technical FAQTechnical FAQ

Laserworld always specifies power directly at the laser source. This is done due to the fact that optical elements, like dichroic filters, polirization cubes or the front glass deflect light differently and may get dirty as well. As Laserworld guarantees the minimum specified power value given for their projectors directly at the laser source, customers may claim if the values are not met. In fact, this usually does not happen due to the 100% quality control, where the power values are measured and evaluated.

With a fullcolor solid state laser, (at least) three different laser modules are used together. White light as well as mixed colors are generated by the additive color mixture of red, green and blue (like e.g. the TV set). Color shades are produced with the partial switch-off or the dimming of single colors, which is so called "analog modulation".

To increase output power or to create a larger or more vivid color range, it is possible to mix even more than three colors (e.g. we do so in most of our RTI NANO systems). It needs some knowledge to operate such systems properly.

The wavelengths of the individual laser modules define the color. That's why it is very important to have the "right" red and the "right" blue to get good visibility with a good color spectrum at the same time.

 

Following video explains the differences between TTL modulation and analog modulation:
 

It is physically not possible to give exact power values of show lasers, as several factors influence the power.

Especially DPSS (Diode Pumped Solid State) laser modules are quite sensitive to exterior influences like temperature and excessive shock.

 



DPSS modules consist mainly of three sections:

- a pump energy source (where there may be slight differences in power),

- a resonation area (that consists of two reflection mirrors that must be absolutely parallel - small deviations lead to reduced output)

- a crystalline structure as laser active material (which is naturally grown and thus may differ in quality).
 

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Professional laser systems usually have cooling/heating elements built inside the projector. Although these are meant for keeping the laser modules at operation temperature, the climate inside the laser device needs to be quite balanced.

If you place a laser projector next to a fog machine or next to the air condition outlet (or even to the normal ventilation system) there may be a condensation of water/liquid inside the housing due to the temperature difference. The effect is comparable to the situation if you come from a cold outside into a warm room and your glasses fog up.

That's why it is very important to place the laser system appropriately and to avoid any situation that may raise the risk of condensation.
Condensation inside a laser device may lead to short-circuit of the unit and crash of laser diodes.
Please consider the operation temperature stated in the user manual of the laser system!

A Sealed Housing technology enclosure does not prevent condensation! Please head for a even more professional system (e.g. RTI NANO or SwissLas HighEnd) to reduce the condensation risk.
It is not possible to create lightsaber like effects: You cannot "terminate" the laser beam somewhere, it can physically not be terminated without having an end-point (surface).

Light can not be ended somewhere, it can only "fade out", meaning intensity is reduced with greater distances. But this is of course not feasible for a lightsaber.

Please also read the FAQ regarding projection surfaces
Professional diode laser systems are usually equipped with 638nm red diodes. These have a very good visible red color and can be proper collimated to good beam shapes. The handling of these kind of diodes is quite tricky, especially if there is the need of combining more than two diodes. We use this diode type in our professional laser systems. Most Chinese manufacturers are not able to handle this kind of diodes.

The 655/650nm red is easier in handling and cheaper, although the beam profile is worse. This kind of diodes is normally not suitable for optically combining more than two single diodes, that's why the red power is somehow limited. We use this diode type in our budget systems to have a very good price-performance-ratio. The red color is somewhat deeper.

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A grating effect is an optical deflection grid, that multiplies the input rays. E.g. if you shoot a single laser beam to the grating, you get kind of a star effect (burst grating) or a "dotted line" (line grating) on the other side.

Every color spectrum is deflected in a different way, so if you have a multi color input, you get the colors split up as well. That's why it is physically not possible to generate a white star effect with the use of a deflection grating.

Simple grating effects are used in the very common Star Effect Lasers, but also in more professional systems like the Proline Series.

Grating effects can also be used with mirrors (BURST-10, LIN-10)

The dichroic filter is used in an multi color laser system for combining the single colors to one beam. The dichroic filter deflects a certain color spectrum, whereas it lets pass others. Due to that it is possible to have e.g. a red and a green laser source, that is combined: The green light heads straight to the scanner mirrors, whereas the red source is placed 90° to the green beam. With the dichroic filter, the red laser light is deflected to exactly match the green beam and hit the scanner mirrors in the same point as the green laser light.

If colors of a multi color laser systems mismatch, it is necessary to realign the dichroic filters and rematch the colors again.

In terms of visibility, the Nanometre values that are nearer to 550nm are better than values farer away.
Please see the visibility curve below:

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Most probably not. The halo-effect normally occurs when the optics are not properly clean. You need to regularly clean you laser device, especially the optics, to ensure best output quality together with long lifetime of the unit.

Dirt and dust inside the laser enclosure may lead to overheating or mechanical failure, so you need to regularly clean the device.

If you have one of our professional systems, you're lucky: The Sealed Housing units only need very few maintenance, the IP65 or above units are normally service free.

For cleaning the optical components we recommend using a microfibre cloth, probably together with some water.

In some cases there may be the need of window cleaner or similar, but be careful to not damage the coating of the dichroic filters. We do not recommend to use any strong cleaning liquids and also no strong alcohol.

Be careful when cleaning the optics to not break the scanners or dichros! Only small scratches have tremendous influence on the laser light parametres, so remember to not use any rough materials for cleaning.
Phoenix Showcontroller and Pangolin do not run on MAC / Apple OSx. However, it is possible to operate all software products, that we offer, in a Windows emulated environment on Mac systems.

There are several technical limitations that make it tricky to just switch existing software solutions to Mac OS ( e.g. deep integration with DirectX or OpenGL and similar Windows APIs).
We already did many projects like that and it is quite similar to video projections: If you need to cover a larger space, you combine several projectors. It's the same with lasers: You can split-up the graphics in several parts, that can be handled by different laser projectors then.

Please ask if you need support in doing such kind of split-up projections. It's not too tricky, but in fact needs some knowledge.

We recommend to use the RTI units for highest end graphics applications, as these are very precise in scanning and accurate in beam.

More Articles ...

  1. I got a brand new laser, but it doesn't work. What shall I do?
  2. How is the ILDA connector pinout?
  3. How does the interlock work in Laserworld projectors?
  4. What differences are there between optical effects and scanners?
  5. How can I evaluate the quality of a scanner system?
  6. Does Laserworld also sell a white light star effect?
  7. Are laser beams visible even without haze and fog?
  8. Are there also DMX capable show laser systems with Master/Slave mode?
  9. Can you link different lasers with DMX cables to forward the ILDA signal of the first unit?
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Buy Show Laser Light Systems

Laserworld is a world leader in the field of manufacturing and distribution of show laser light systems. The product portfolio ranges from small, entry level laser light systems (effect lasers, club lasers, party lasers) up to high end professional lasers. Every product and product series targets a certain customer group, so the laser systems in the Laserworld product portfolio complement each other, which results in heterogeneous customer groups: musical equipment retail stores, music stores as well as nightclubs, amusement parks, rental and production companies are just a small extract of them.
Laserworld runs an online store for show laser light systems on sale. It is possible to buy laser light systems directly there or purchase them at one of our countless distribution partners. Commercial customers are encouraged to register as dealer.

Rent Laser Systems

It does not always make sense to buy, but to rent laser show systems. Laserworld holds a large stock of laser systems for rent.. The rental laser systems are available for worldwide shipping and can also be rented together with professional laser operators. We only rent out high professional laser show equipment, mainly built by RTI. So products of the PIKO, NANO and NEO Series are available. And of course we offer Showcontroller, Pangolin and Lasergraph DSP laser show control systems for rent as well.
Laserworld holds larger stock of RGB white light laser systems with 10W and more. The online rental price list helps in selecting the right laser for rental and helps to calculate the rental price. It is also possible to select laser accessories for rent, such as haze machines, smoke machines or MIDI controllers.

Laser Show Production

Long year experience of show partners and many references from past laser show and multimedia show projects where lasers manufactured by the Laserworld Group came into action, make us the right partner for any type of laser show production or laser show project. No matter if it’s a fixed installation of laser systems or multi-media projections, or if it’s a temporary show: Our experts help in laser show planning, design, on-site implementation and laser show production. We offer turn-key multimedia show solutions as well as Laser Show productions in part or embedded to other show productions, like it happens at big stage shows, festivals or concerts. Time-coded, pre-synchronized shows can be done as well as live laser shows: We have experts for both types, they can handle even extremely complex synchronization scenarios.
It is also possible to do small-scale laser shows for little money: Just tell us about your plans for your laser show and we help you in specifying a show that meets the show budget.

Laser Show References

Many references of laser shows and multi-media shows where laser systems manufactured by the Laserworld group came into action accumulated over the past years, so we documented them in pictures and videos in our portfolio section. Of course, these references only show a small part of the laser shows and multi-media shows our partners have done throughout the years, as many of our customers did not want us to show their project in our references – mainly as these were commercial laser applications or corporate laser shows, which were not meant to be publicly shown. Nevertheless we prepared a good number of references, and we keep on adding more.
The partners of the Laserworld Group did laser shows and multi-media projects at many different occasions and for many different applications. Most common places laser shows are displayed at nightclubs, festivals, amusement parks and at corporate shows. Also many famous artists and musicians rely on laser show and multimedia support for their stage shows. Besides that, lasers were used at weddings, for product presentations or for architecture and mapping.

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