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LED Projector Popular Science

LED Projector Popular Science

  • 2021-12-27

LED projector, also known as LED projector, is a technology applied in the field of display and lighting.

LED projector,LED HD Projector,LED Mini Projector

Defined

The main body of LED is a piece of electroluminescent semiconductor material. The stronger the current is, the stronger the light is. The lighting principle of LED is different from that of traditional UHE and UHP bulbs. It will not generate a large amount of heat during the lighting process, so its service life can reach more than 10,000 hours.

Application

With the progress of science and technology, this technology has been applied to projectors. There are many good LED projector manufacturers in the market in China. For example, Shenzhen resources has perfectly combined this technology with DLP technology to make it portable and compact, especially because of its low power consumption and heat generation, more widely used in life and personal business.
As we all know, the bulb of the traditional projector is a very expensive item. It has a certain service life. When it is used for a long time, the bulb will age, replacing bulbs is a problem that projector users must consider, which is also a major disadvantage of projector compared with LCD TV. Since the advent of projectors, major projection manufacturers have been continuously committed to researching and developing bulbs that have been used for a longer period of time. The emergence of LED projection technology has opened a new situation in the development of projectors. Compared with traditional projectors, the biggest advantage of LED projectors using LED light sources is that they don't need to change bulbs frequently, and their bulb life is between 10,000 hours and 20,000 hours or even longer, so users don't need to worry about the bulb loss of projectors at all.

Advantages

Broadcast
In fact, since the application of LED light source in the field of projectors, with the continuous improvement and progress of projection technology, many micro projectors can also meet the requirements of some small and medium-sized conferences and trainings, the advantages in home cinema are also obvious, but the most important thing is its portability and simple operating system, which makes it fill the gap that traditional projectors cannot achieve. For example, if you move casually, you can take it with you to go out to work at any time, and you can project offline without external multimedia devices. These advantages are not possessed by traditional projectors.


And the biggest highlight of the LED projector lies in the use of its light source. Basically all products use LED light sources, with a service life of over 20,000 hours. Compared with traditional projectors, it is about ten times of it. If calculated at 5 hours per day, it can be used for 10 years. In fact, it can also be said that LED micro projectors broke the monopoly position of traditional projectors and created a new era of projection without changing bulbs.
Conclusion: Although there is still a certain gap between the brightness and the traditional projector, the development potential of LED projector is infinite. With the continuous progress of technology, it is not impossible to replace the traditional projector, because its advantages are favored and known by more and more people, with the increasing public awareness, it is inevitable for LED projectors to enter the mass consumption market, and this will also make the micro projector enter a inflection point of explosive growth.


LED projector is a kind of projection display equipment with rapid development in recent years. It adopts LED light source, which is a breakthrough. We all know that LED light source is famous for "energy saving and environmental protection, if LED light sources are widely used in the projector field, the annual contribution to the environment is also immeasurable. However, the development of LED projectors has encountered a prominent bottleneck-the problem of the calorific value of projectors. How did this problem come into being? Let's analyze it.


This is the scene of meeting training with miniature projector
The maximum brightness of LED projector is 500 lumens. It is no problem to meet the requirements of general small and medium-sized conferences and trainings, but if a higher projection environment is needed, I'm afraid the LED projector is not competent because the brightness is not enough. LED projectors belong to the category of miniature projectors. Miniature projectors are generally characterized by small size and portability. Within this small volume range, if the number of LED lamp groups is increased in a large area, it is difficult to disperse the heat generated by the machine. Therefore, this is a bottleneck restricting the development of LED micro projectors, in the future, solving the problem of calorific value will be a key point of technological breakthrough. After solving this problem, the development prospect of LED projector is limitless.

Edit related knowledge

LED micro projectors, especially LED intelligent micro projectors, have gradually become the new favorite of digital fashion people since 2012. The reason lies in the improvement of brightness, the breakthrough in appearance and the leap in playability, the whole market is awesome. Introduce the basic knowledge of projectors to the projectors one by one.
ANSI lumens
The main performance index of the projector is the unit of measurement of brightness. The National Bureau of Standards of the United States sets a standard for the Lumens of the display equipment, and the brightness measured by this standard quantity is usually expressed in ANSI Lumens. Generally speaking, the higher the Lumen number is, the brighter it is, and the higher the projector is. The method of measuring the brightness of the projection image on the screen: divide the image of one square meter into nine parts on average, measure the brightness value of each center point, and then calculate the average value of nine points.
DLP technology
DLP technology is the abbreviation of "Digital Light Procession", which is Digital optical processing, that is to say, this technology needs to process the image signal digitally before projecting the Light. It is based on the Digital Micromirror component-DMD(Digital Micromirror Device) developed by TI (Texas Instruments) company to complete the visual Digital information display technology. To be specific, DLP projection technology uses digital micromirror chip (DMD) as the main key processing element to realize digital optical processing process.

RGB color mode
RGB color mode is a color standard in industry, through red (R), Green (G), Blue (B) the changes of the three color channels and their superposition to get a variety of colors, RGB represents the colors of the three channels of red, green and blue, this standard includes almost all colors that human vision can perceive and is one of the most widely used color systems.
Screen width-height ratio and screen size
Screen width-height ratio/screen size projection screen width-height ratio refers to the vertical and horizontal ratio of the screen. The screen width-height ratio can be expressed by the ratio of two integers or a decimal, for example, 4: 3 or 1.33. The aspect ratio of computer and data signals to ordinary TV signals is 4: 3 or 1.33, and that of movies and DVD and high definition TV is 16: 9 or 1.78. When the aspect ratio of the input source image is different from the aspect ratio supported by the display device, the picture will be distorted and missing. There are three ways when the 16: 9 image is displayed on the 4:3 Screen: The first is deformation
(Anemographic) mode, in the case of horizontal filling, lengthen vertically until the screen is filled, so that the image looks thinner than before; The second mode is the character frame-A(Letterbox-A) mode, the image of 16: 9 keeps it undistorted, but leaves a black stripe on the screen respectively; The third method is-B(Letterbox-B), which is the compromise of the first two methods, the two sides of the horizontal direction each exceed a part of the screen, and the vertical upper and lower black stripes are narrower than the second one, and the aspect ratio of the image is 14: 9. Household projectors usually have a screen width-to-height ratio of 16:9 to meet the needs of home cinemas.
The size of the picture refers to the size of the cast picture, which has the minimum image size and the maximum image size. It is generally expressed by diagonal size, in inches. This indicator is determined by the zoom performance of projection optics. To put a predetermined size, the projector needs to be placed at the corresponding distance from the screen. According to different lens and brightness of various projectors, the relationship between picture size and projection distance is different. Generally speaking, a projector with higher brightness can cast a larger picture. The projector has a minimum picture size and a maximum picture size according to the focal length of the lens, the picture projected by the projector between these two sizes can be clearly focused. If it is beyond this range, the picture may be unclear and the projection effect may be poor.

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