In the projector market, it is a laser projector that can be said to be a latecomer and has an inestimable development prospect. Since 2016, the laser projector can be said to be fully blooming, whether it is a laser home projector or a laser engineering projector. , laser micro projector or laser education projector, all major manufacturers are active layout, full coverage. But what are the advantages of laser projectors? I believe that many consumers and friends are still a bit confused, today we will look at the laser projector, what kind of charm.
Let's first look at Baidu Encyclopedia's explanation for laser projectors: laser projectors use laser beams to transmit images. Among them, the optical components of the laser projector are mainly composed of a red, green and blue light valve, a combined X prism, a projection lens and a driving light valve. There are red, green and blue lasers in the laser projector. The laser is diffused in the machine through the corresponding optical components and processing chips and then transmitted to the X prism to integrate the three lasers, and then the integrated objective laser is transmitted to the projection screen by the projection objective to complete the entire laser projector display process. .
I believe that everyone has read this explanation is still not so thorough, so here I explain the secret of the laser projector layer by layer.
At present, laser display technology mainly includes four technologies: LED+laser, phosphor+blue, three-color laser technology and two-color (red+blue). LED+laser hybrid light source technology is aimed at the low-end market. No more than 3000 lumens, phosphor + laser source technology is aimed at the low-end market projection, the maximum brightness of related equipment can exceed 10,000 lumens, and the three-color laser is considered to be the most pure laser source, mainly for the high-end market, related The brightness of the equipment is basically more than 20,000 lumens; and the two-color laser technology projector is based on the blue light + laser light source technology, adding a red laser, which can bring greater color gamut coverage and better color display. The richer red details, while the two-color laser technology retains the economic advantages of monochrome fluorescent technology.
LED + laser light source technology principle
Compared with traditional bulb projectors, LED+ laser hybrid light source technology has one of the biggest advantages. It has a long life. The LED+laser combined projector has a life of up to 30,000 hours, which can basically eliminate the maintenance cost and the cost of use. The brightness of the light source projector is not obvious for a long time. However, the LED + laser light source projector is not good in its own brightness, and the light source technology structure is more complicated. For the requirements of high brightness and technical difficulty, the prospect is not It's too clear, so it's rarely used in the market right now.
Blue light + phosphor light source technology principle
The phosphor + blue hybrid light source projector (also known as the blue laser projector) is a fluorescent pink wheel that uses a blue light source and rotates at high speed and contains a variety of colors, such as red and green, using a rotating fluorescent pink wheel technology. The red, green and blue primary colors are produced, and the light output of different colors is generated at different times, and finally the output of white light is realized. This technology overcomes the most fundamental technical problems in terms of efficiency and reliability of the laser display, achieving a more pure color, closer to the international standard gamut value, and a high lifetime, generally more than 20,000 hours, while safety. Stronger, no risk of blasting, and even more environmentally friendly. However, due to the nature of the phosphor + blue light source, it can only be achieved with a single-chip DLP, which is also insufficient for the business, engineering, and education markets.
ALPDTM technology principle
ALPDTM, a fluorescent laser display technology, uses a basic technology route similar to mainstream LED illumination and display of blue-and-fluorescent materials, creatively invented a remote-rotating fluorescent device that cleverly solves the problem of fluorescence-switching thermal quenching in high-density lasers. Excited, still maintain high conversion efficiency. At the same time, the use of GaN blue laser and YAG and nitride fluorescent materials effectively extend the high reliability and long life of LED. The ALPDTM laser source has the advantages of traditional LEDs and solves the shortcomings of both. It has become a new class of light source and has become a major breakthrough in the history of laser light sources.
Principle of three primary color laser source technology
The three-primary pure laser technology is regarded as the most pure laser source in the industry. It has the advantages of rich color and high color saturation. It can be the richest, most beautiful and most realistic color in nature, and has become a major technological development direction in the field of laser display technology. At present, the projection equipment using the three-primary pure laser light source has penetrated into the fields of simulation, exhibition, conference center, outdoor curtain wall, digital cinema, home theater, etc., which has great development space and broad application prospects.
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