In recent years, smart projectors have developed faster and faster, and people's acceptance of projectors has become increasingly high. The progress of the projector industry has also driven the progress of projector light sources. In the past, most of the light sources of projectors were light bulbs; nowadays, LED and laser light sources projectors accounted for a large market share of . Today, let’s talk about LED and laser light sources to see which light source is more suitable for future use and will not be eliminated in a few years.
For projectors, the light source determines its brightness and image quality effect. In the early days, most projectors used light bulb machines, which had a short lifespan and were mostly used in office and teaching fields. I remember that in the early years, many schools used light bulb machines. Because of this, light bulb machines are now used less frequently in households, and people prefer LED and laser light sources with higher brightness and longer life.
Talking about LED:
At present, many families are willing to choose LED light sources when choosing projectors. This type of projector is moderately priced, has good cost performance, and has a large price span and effect, so the scope of application is also relatively wide. Unlike ordinary lighting projector light sources, the LED light sources used by the projector are customized high-power light sources. It can realize different colors of display through three colors red, green and blue, and the display effect and technology are also very mature. LED light sources can cover the sRGB color gamut, and mainstream projectors can reach more than 90% of the sRGB color gamut coverage. The higher-end ones can even reach more than 98%.
In my opinion, although the projector of LED light source is good, the brightness of LED light source also has its own bottleneck. Although many projectors of LED light source currently exceed 2000ANSI lumens , if you want higher brightness, you may lose some color, which will affect the viewing experience. In addition, high brightness will inevitably lead to high heat generation, and the noise problems caused by heat dissipation also need to be considered.
Let’s talk about laser:
Laser projector is the brightness, which is incomparable to ordinary LED light source projectors. Laser projectors are also divided into monochrome laser, two-color laser and three-color laser. Monochromatic laser uses a single blue laser to excite the yellow and green phosphor on the fluorescent color wheel, and then uses prism to divide the three colors into them, and finally achieve other colors, and then purify them through filter . Monochrome laser projectors cannot meet both brightness and color requirements at the same time. With brightness, the color is not pure enough, and with color brightness, the effect cannot be met.
In comparison, the projector of the three-color laser light source has the best effect, reaching 100% BT.2020 color gamut coverage. However, projectors with three-color laser light sources also have the problem of speckle. Cinemas generally use vibration removal to solve the problem, while domestic projectors use power consumption to reduce. Although all can be solved, this method does not seem to be the best.
Through content comparison, it is not difficult to find that there are many possibilities for the three-color laser light source. Whether it is brightness or picture quality, it is incomparable to other light sources. Moreover, the speckle problem has been discovered, and it will inevitably be solved. Therefore, the three-color laser light source will inevitably be more suitable for future development trends. If any brand can quickly release a cost-effective three-color laser light source projector, it will inevitably become a new benchmark in the industry, and I look forward to this!
