Many projectors use lasers instead of LEDs or lamps and can project high definition images up to 300 inch .
The lasers within the projector can also be controlled to create a spectrum of patterns and colors.
The patterns produced by lasers vary from simple shapes to more elaborate displays that include pictures, patterns and text.
The first thing you should do is to make sure your work environment is safe and free of any potential dangers.
Do not use any equipment that you have not been shown how to use properly, and do not do anything to harm yourself or anyone nearby.
Ensure your work area is well lit with the right lighting and that you have all the necessary tools.
Lastly, make sure you have an adequate ventilation system with proper exhaust. If you are using a laser, keep it out of the reach of children and pets.
What is Laser Light Show Projector?
A laser light show projector is a type of visual light entertainment system that is used to project laser patterns that can be seen in the dark.
Laser light show projector is a projector that projects images, videos and other content onto a screen using a laser.
There is no need for any kind of external light source to achieve this, since they are self-contained system that has a variety of different laser colors that can be used at the same time.
These types of projector are often seen at night clubs and other types of music performances. They have become so popular that there is a dedicated laser light show community.
There are projectors specifically made for the home that can project laser light onto the walls and ceiling of your home.
Projectors such as these are great for creating a unique look to your party, and can integrate your music and home theater system to keep your guests entertained.
A few other commons names that are used to define laser projectors are laser show system, laser display system, laser lights, DMX lasers, rainbow lasers, rgb lasers, and more.
These laser systems are often used for the creation of laser shows, as you may have seen at festivals, nightclubs, tours, or events all around the globe.
A laser projector is a projection device using laser light. It is the next generation of optical projection systems, and is essentially a digital projector that uses a laser as its light source.
The system is made up of a green laser , a wavelength-division multiplexer ( WDM ), and a digital micromirror device ( DMD ).
The green laser is the light source, and it is typically small and compact.
Different Types Of Lasers Light Show System
- ILDA lasers are the foundation of all lasers systems, using a DB-25 connector on the back of the laser to receive a control signal from laser control hardware, such as the FB3QS.
These types of lasers were the standard for many years, however, they’ve become outdated and more of a hassle than a help.
- ILDA cable is not only expensive, but it can be difficult to find if you need a quick replacement.
It can only run up to 150ft before the signal drops off, which doesn’t work well for large scale shows. Lastly, they are quite difficult to interface into multimedia setups.
What Are The Dangers Of The Lasers Light Shows?
The lights are pulsing, the music is pumping, and suddenly a giant laser light show appears on the wall. The lasers, it turns out, are dangerous, especially if they are shined in the eyes.
The light from lasers can cause flash blindness, which is temporary loss of vision caused by a quick flash of light. This can happen even if the laser is aimed away from your eyes.
And even if you are not looking directly into the laser light, you can still be at risk for flash blindness if you’re looking elsewhere and the laser light reflects off of something, like shiny walls or mirrors.
To completely avoid eye damage, laser manufacturers mandate a 30-second exposure limit; with this in mind, consider that a laser show typically lasts between 30 minutes and 2 hours.
Laser safety glasses are designed to protect your eyes from laser light, they work less effectively with regular light.
Housing Features Of Laser Projector
- Power in / power out ports.
Not all lasers will feature the power out port, but it’s become a lot more common to build both power in and out ports into the laser projector, which allows you to provide power to several systems .
- E-stop in / E-stop out ports.
The same goes for the E-stop out ports, it’s become a lot more common to feature both in/out ports in current laser systems, but you likely won’t see it in cheaper or lower tier models.
It’s a useful addition, as you can daisy-chain all the remote ports on your lasers to one E-stop, instead of having one for each.
In the United States, you’re required by law to use an E-stop, which usually has to be plugged in for the laser to even power on.
This tends to vary by specific laws and regulations, however it’s definitely ideal to have in case of emergency.
- Power button & safety key.
Having an ILDA port will depend on the type of laser projector that you’re using, or if the manufacturer has included one in addition with another custom laser show control hardware.
If you’re using an ILDA based laser projector, these are the ports that you will use to plug in your laser control hardware, and daisy-chain to other ILDA laser projectors as well.
- Custom laser show control hardware.
Many of today’s manufactures will include custom laser show control hardware such as the FB4 control hardware from Pangolin, which includes features such as DMX in/out, ArtNET in/out, direct control from a PC or lighting console, or auto-mode playback to run a standalone laser show that has been set.
- Manufactures may also add custom options that can be purchased, or are added for free with their lasers.
A common feature see in Kvant laser projectors is the color balance correction mode, which allows you to balance colors across all your laser light systems.
What’s Inside Of A Laser Projector?
- Laser modules and diodes
A laser module can be thought of as the light bulb inside of a laser projector, and within the module are laser diodes, which is where the physical laser source is being emitted from.
Laser diodes are produced in all sorts of different wavelengths to create different colors, when you combine red, blue, and green lasers you create an “rgb laser”.
- Optics & crystals
Laser optics and crystals are used either inside of a single laser module, or outside of several laser modules to combine together the various wavelengths to create one solid laser beam.
- Laser scanner/galvo
A scanner is seen as the heart of the laser projector. It’s a small electronic device contains two motors that are placed inside of an X/Y mount with mirrors connected to bounce and project the laser beam.
The gavlos also contain a position detector on the back, which receives a control signal from the servo amplifier telling it how to move.
- Servo amplifier
A servo amplifier is powered and controlled by the internal control system, something such as the FB4 control hardware, which is used to control the display.
The servo amplifier sends a control signal to the laser galvo, telling it where and how to move, in combination with the control hardware.