The difference between LED projector and laser projector
- LED projector or laser projector
- Don't be stupid enough to know the difference
- In recent years, with the progress and development of science and technology, the projection industry is also undergoing rapid changes. As a viewing device that can replace television, projectors are playing an increasingly important role in daily life. But the ensuing problems are also many: for example, the equipment description does not match the actual viewing effect, and the fundamental reason for the above phenomenon is that the projector light source is not selected correctly. At present, the projectors on the market can be roughly divided into three kinds: mercury lamp projectors, laser projectors, LED projectors, so how to choose these three kinds of projection equipment?
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- Before answering this question, let's have a basic understanding of how early "projectors" worked. I believe that everyone has done such a physics experiment in the student days: the use of convex mirrors can project an object several times smaller real image. After adjusting the distance between the convex mirror and the object, an enlarged real image will be obtained, and this is the basic principle of the early "projector".
- Some people may say that the above experiment can only be carried out in a relatively dim environment, and the picture presented is only a form of expression relying on light refraction, and the projector that is diverse and colorful and can meet the needs of daily viewing is completely two types of products.
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- In fact, the projector also shines light on the display element of the image, and then produces the image screen, and then projects it through the lens, mapping the image on the surface of the wall and other objects. With the development of display technology, light source technology and lens technology, projectors have become more and more excellent in color performance and picture immersion.
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- But there are projectors in various price segments on the market, why the XX projector you bought and the YY projector I bought are not the same in terms of visual perception? The problem is the light! At present, the mainstream projection on the market mostly uses high-pressure mercury lamp, LED, laser three light sources display. Among them, high-pressure mercury lamps such as traditional light sources due to the accelerated upgrading of LED and laser in recent years, there is a looming trend to be replaced. So in this issue, we will focus on introducing the difference between LED and laser light sources. First, briefly list the advantages and disadvantages of the following two: LED light source Advantages: strong stability, low energy consumption, solve the serious problem of traditional mercury lamp heating, small and light, long service life; Disadvantages: Color performance is heavily affected by environmental factors Laser source Advantages: high brightness, high color performance, low energy consumption, high stability, long life; Cons: Mostly high-end projectors
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- Through the advantages and disadvantages of the previous introduction, it is not difficult to see that compared with the traditional high-pressure mercury lamp as a light source projector equipment, LED, laser light source has longer service life, lower energy consumption, higher stability, smaller size and other advantages, but the two are fundamentally different. LED light source: mature technology, accounting for the dominant position of projectors Advantages: high brightness, high color performance, low energy consumption, high stability, long life; Cons: Mostly high-end projectors
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- If the LED light source is relatively unfamiliar, then we must understand the difference between incandescent lamps and LED lights, in recent years, with the development of LED lights more mature, as a cold light source LED lights have higher brightness, lower energy consumption and other advantages, is widely used in all areas of life, projectors are no exception. The more critical point is that the projector with LED light source is not limited to the volume of the light source module, and the projector can be very small, and then has ultra-high portable properties to meet the needs of users to watch movies anytime and anywhere. Laser light source: the share is small, but the future growth is rapid
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- As the name suggests, laser is a photoelectric effect, which is a light source that makes excited particles glow under the action of excited radiation. In the color performance, the laser projector is because it simulates natural color, so it is richer in color performance and picture level, and secondly, the life of the laser light source can reach more than 20,000 hours. Its appearance almost sets all the advantages of traditional high-pressure mercury lamp light source and LED light source, which not only ensures the purity of traditional high-pressure mercury lamp light source in color, but also has the performance advantages of LED light source in life, energy consumption and other aspects.
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- Especially for the family that intends to choose the laser light source flat for the home TV, the laser projector can provide a wider color gamut performance, a more detailed display effect, and can maintain high brightness, high saturation, high contrast during the day, you do not have to worry about the picture gray, fuzzy and so on.
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- As of the first half of 2022, the laser projector industry sales of 78,600 units, accounting for 6%, has become more than the high-pressure mercury lamp as a light source of projector products. In the foreseeable future, perhaps it is true as said on the Internet: "LED light sources are getting brighter, laser light sources are getting cheaper, and the space for mercury lamps is getting smaller and smaller." LED projector or laser projector I believe that after reading so much, many netizens already know how to choose their own projector equipment. To summarize the differences.
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- 1, the working principle The laser light source is a solid-state light source, and the LED light source is based on the LED lamp. Compared with traditional high-pressure mercury lamp projectors, the two have good performance in terms of service life and energy consumption. At present, the cost of LED projectors is slightly lower than that of laser projectors due to the relative maturity of the technology. 2, brightness performance In our daily purchase of projectors, brightness is the primary reference to a selection criteria, usually, the higher the brightness (in the field of view allows the premise), the better the picture quality performance, especially in a strong light environment. Compared with the laser projector theoretically as long as the transmitter is enough, the brightness can even reach tens of thousands of different, LED projectors in the overall brightness performance is slightly worse than laser projectors, 2000-3000 lumens is basically the limit level of mainstream LED projectors. Of course, the current top LED projectors can also have higher brightness performance. 3, color performance Due to the different principles of light, laser can be said to be the most ideal light source at present, the visual picture projected color restoration is very high, and with high brightness and other advantages, can present excellent color brightness. The performance of LED projectors in this regard is not satisfactory, of course, not to say that the projector using LED light source is not good, but you need to have a premise: sufficient budget, easy to distinguish between good and bad projectors.
- In general, if you have a limited budget, the pursuit of high color performance and do not mind brightness attenuation, I recommend that you give priority to traditional projectors, mature enough technology is the best guarantee for traditional projectors. If there is a need for daytime viewing and the pursuit of high color performance, I recommend focusing on laser projectors.
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- It is worth mentioning that this year's new "universal" Venus series, high-configuration models have 3600 lumens brightness, daytime direct casting completely without pressure, with 300,000:1 ultra-high contrast, maximize the restoration of color performance, even during the day direct casting, do not worry about the picture color, dim and other situations. In addition, the laser projector also supports a variety of mode fine-tuning, can be used with different images. Well worth the choice of pursuing a high quality of life.
- -- Article reprinted on ZOL Zhongguancun Online
