Laser projectors have been popular nowadays and been widely adopted by more and more projector manufacturers. But you may notice that there are many laser technologies such as laser phosphors and RGB laser. In this writing, let’s shed some light on the differences between the two laser solutions: laser phosphors and RGB laser.
How does laser phosphor and RGB laser work?
laser phosphor uses only one laser diode to produce one color, and this single color generally is blue. The reason to choose blue instead of red or green is that blue own high density more power efficiency. The blue light is emitted onto a spinning yellow phosphor wheel. This yellow phosphor transforms the blue light into a bright yellow light which is split into the primaries using a color wheel.
Unlike laser phosphor technology, the RGB laser projector is also known as a direct laser projector, adopting individual red, green and blue lasers, which are the primary colors able to produce all the other colors.
What are the differences between the laser phosphor and RGB laser?
- Colors:
RGB projectors have a single bandwidth gamut called Rec. 2020, laser phosphor projector, however, has a smaller color gamut than RGB projectors has. In another word, the edges of the color gamut triangle of laser phosphor lie within the triangle of RGB laser.
- Brightness:
Laser phosphor projectors generally offer brightness from 10,000 to 50,000 lumens, while RGB laser projectors are able to offer brightness up to nearly 60,000 lumens. In fact, Laser phosphor projectors are quite bright enough, no matter for home cinema use or educational use. They are capable of dealing with moderate ambient light in our daily scenarios. But for more professional usage such as theater and exhibition, RGB laser projectors may be more competitive for they can deliver higher brightness. That’s the main reason that laser phosphor projectors are more commonly seen by us, especially in home and educational projector world.
- Portability:
RGB laser projectors are usually heavier and larger than laser phosphor projectors. Because brighter projectors will produce more heat during working, hence a powerful cooling system is required. With that said, more space is occupied by the cooling system. On the other hand, it is not much of an issue for an RGB laser projector to be less portable. RGB laser projectors are mainly used in places such as theaters and museums, they tend not to be moved around once are set in a position.
