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Two-color laser and monochromatic laser of laser projector

2022-01-20

In the past two years, laser projectors are in the limelight. Today, as the demand for large screens of home display equipment is increasingly rapidly, more and more consumers are beginning to focus on the UST laser projector which with the advantages of both size and intelligence. Although laser projectors are expensive, many consumers still pay for them. Although laser projector users pay high attention, because it is a new device, there are not too many people who really understand China laser projector suppliers.

First of all, laser light source is an indispensable and important technology on laser projector . For the laser light source, it is divided into three different types: monochromatic laser, two-color laser and three-color laser. Faced with these three laser technologies, which one is the best solution? This is a problem that plagues many users who plan to purchase laser projectors.

1. What is a laser light source?

To know the laser light source, you need to know what a laser is. I believe that many friends who came into contact with lasers were using laser transmitters for a few dollars that they bought in the shops around the school when they were young. At that time, we only knew that lasers were a beam of light and existed as a kind of toy. So what exactly is a laser? To be simple, a laser light source is an electric light source that emits light through excited particles under the action of stimulated radiation. It is also a coherent light source (refers to light with the same frequency, non-vertical vibration direction, and constant phase difference. The two beams meet Coherent light can also be called coherent light).

2、Second, the advantages and disadvantages of laser

Laser has gradually become a mainstream technology. Compared with traditional mercury lamps and LED light sources, laser light sources have the following three advantages:

Good monochromaticity.

The color emitted by the laser is relatively purer, and its monochromaticity is more than 10 times higher than that of ordinary light sources. Therefore, the laser light source is an excellent coherent light source and can also be used for optical communication.

2 Strong directionality.

The divergence solid angle of the laser beam is very small, on the order of milliarc, which is 2 to 3 orders of magnitude smaller than that of ordinary light or microwave.

3High brightness.

The radiant brightness at the focal point of the laser is 10-100 times higher than that of an ordinary light source.

   Simply put, the main advantages of laser light sources are high brightness, good color, low energy consumption, long life and small size. And the light source that can have these five advantages at the same time has and only laser. Although the LED light source is also a good light source, its brightness is relatively low, so it will not be at a level in the future competition with the laser light source.

Of course, these advantages have not been fully demonstrated at present. After all, lasers also have disadvantages, such as the high cost of laser light sources, especially when implementing color displays, the problem of the mismatch between the brightness and lifespan of the green light source and the red and blue colors is also troubled. In this industry.

3. Why are there single and dual colors in laser projector ?

Traditional televisions, monitors and other equipment must follow the principle of "three primary colors" in order to present images, that is, red, green and blue, also known as RGB, can be combined to form various complex colors, and laser projector s are the same.

The three-color laser has the best effect, but due to the high price of the red and green laser generators and the complicated structure of the three-color laser, the cost has not been reduced. It only appears on high-end movie projectors, and ordinary users cannot Accept the price of a three-color laser light source projector. So a more economical solution appeared in the market, that is, a monochromatic laser light source.

The so-called monochromatic laser light source is a color of light with a fluorescent pink wheel for color separation, and then form RGB colors. Generally, the monochromatic laser is blue, and the cost of the blue laser is lower, and the photoelectric conversion rate is higher. Although the cost has been reduced, the problem has also come: the first is the inaccurate color display of the monochromatic laser light source; the second is the blue laser fluorescent color wheel. Due to the technical bottleneck, the fluorescent pink wheel always maintains high-pressure operation, which is prone to color drift. In order to solve these two problems, a new solution-dual-color laser light source came into being.

Two-color laser can be regarded as a compromise between monochromatic laser and three-color laser: a new red laser generator is added, and green light is generated by the reaction of blue laser and green fluorescence to form RGB three colors. Compared with the monochromatic laser, the dual-color laser has a significant improvement in brightness and color (mainly red and yellow). Compared with the pure blue light source laser display, the "blue-violet picture is particularly prominent" The color space unevenness of the two-color laser will significantly improve the color gamut coverage, balance and visual comfort.

4、Four, which one to choose

In contrast, the China laser projector manufacturer produced the UST laser projector,which adopted two-color laser light source technology. The temperature adopted liquid-cooling system to make the projector achieve a rapid cooling effect and low noise, which is equivalent to installing a small air conditioner in the projector. Occupies most of the space, the eye-protection mode makes your family more at ease. We Hotus Technology is more at ease. The color of the two-color laser is better and the brightness is higher. However, due to the more complex technology and higher raw material costs, the price of the two-color laser projection is far Higher than monochromatic laser projection.

As can be seen from the laser projector s currently on the market, the prices are uneven. For example, cheap laser projectors can even cost less than 5,000 yuan, but this type of projector is not recommended to buy. Because this kind of product uses the old laser technology that has been eliminated, the color and brightness are not high. The price of projectors that really use dual-color laser light sources is basically maintained at about 10,000 yuan, so for ordinary users, perhaps the cost-effectiveness of monochrome laser projection is more ideal.

Of course, with the development of technology, the price of projectors using laser technology like MCLA will gradually decrease. At that time, Chinese laser projector  manufacturers will vigorously produce laser projector s, allowing more families to install a home theater at home.