After years of technological development and marketization of products, projectors developed with microdisplay devices are quite mature in technology. Projection products can be said to have penetrated into many large-screen display fields such as education, business, and even home entertainment. There are various types of front projectors and rear projectors on the market. LCD, LCOS, and DLP are the three main technologies for the current microdisplay projection. In the general civilian field, the dimensions range from about 0.55 inches to 1.3 inches.
Digitalization, networking, and multimedia interconnection of projection display technology have been realized. The core components of projection products include light source lighting systems, color separation and color processing systems, projection lenses, image signal processing circuits, and micro display devices. In terms of display effects, the current projection products have been fully able to meet the needs of users.
Of course, the user's expectation for the product is endless, the user wants to be more compact and portable, it is better to be able to conveniently carry the projection product for the application; and it is hoped that the product cost-effectiveness is not just the price of the product, the light bulb, etc. The service life of components is also a very important part. After all, current projection lamps are expensive.
In addition, as the "core" display of projection products, of course, it needs to be guaranteed in the application. The above three major performance improvement requirements, although the new product has been greatly improved, but the "bottleneck" is more and more obvious, because it is closely related to the design of the projection light system, want to get a better product, There must be new and more practical technologies and product applications.
The LED light source technology has been well developed and applied. It can be said that it is one of the most significant new directions for projection.
How LED light source projectors develop on the market today
The application of LED light source projection products was first unveiled before the public. It was at the SID annual meeting held in May 2003, which caused great repercussions for its compact body. However, it was only a conceptual product at that time. What really makes sense is that at the CES show in January 2005, five companies exhibited LED light source pocket projectors at the same time. People began to really consider the advantages and weaknesses of LED light source projection products. After one year of technology and product development, LED light source became a prominent highlight at the CES show in January 2006. A large number of LED light source papers were published at the SID seminar in June 2006, marking a new stage in LED development.
As a result of the emphasis, the performance of the LED light source has been comprehensively improved in the past two years. In terms of core performance, it has better luminous efficiency, greater power, and improved light emission angle and monochromatic light emission performance, thereby increasing the unit light emission brightness. And new products have achieved both AC and DC, and improved thermal management.
These developments make the use of LED light source projection products in the application performance is even better, and the performance improvement also provides a basis for the development of the product market.
LED light source projector has any technical advantages
The application of LED light sources, in the projector, the most important significance is to open up a new path for the miniaturization of the fuselage. As the LED light source is small in size and has many display technology advantages, it is more suitable for research and development of compact projectors and even originals, so that the user's projection is more "carried-out" and "liberalized."
LEDs are used for projection lighting, which not only increase the lifetime, but also change the structure of the projector. Due to the reduced heat dissipation requirements and the shortened light path system, heat dissipation and noise are all better.
At present, LED light sources are mainly used for the integration of small projectors and compact minicomputers. The integrated miniaturized projectors are not made as independent models. They are mainly integrated with miniature display devices such as mobile phones, digital cameras, and laptops. Together, battery-powered, it can project images of about A4 size or standard letter-size for easy sharing with others. Pocket handheld projector is a complete independent model, compact and lightweight, one hand can easily pick up, easy to carry, can be placed in a file package, the future direction of development is business applications. Its AC and DC dual-use, projection screen can be greater than 17 inches, screen brightness of 15 to 200 lumens, with the development of technology, the display is still improving.
Which projectors use LED light sources in the market
LED light source projection products have also passed several generations of development. From the earliest "pocket" projection products of Mitsubishi and Samsung, although the shape design is impressive, the brightness is not enough to support the usual use. The EPSON and BenQ products that appeared later showed more ingenious designs. EPSON products were equipped with two large fans to improve product stability, and BenQ's LED projectors were used in conjunction with their smart phones to create a business image. The practicality of the product is also "not flattered", and it is even difficult to see prototypes.
And tentatively regarded as the "third generation" of LED projector products, including Mitsubishi's new products, Toshiba's popularity promotion products and LG's personalized products, give a very good look in the real applications, Mitsubishi's new LED projection products Raise the brightness on the basis of the previous generation and pay attention to the picture presentation.
Toshiba's new products are even more "productized" and are currently available in the country, and its "overall concept" is excellent. The professional backpack is equipped with a special projection folding screen that can be opened for use. High-gain can complement the projection brightness, and this The backpack is designed to be able to put down notebooks and LED projectors. It is suitable for business people to move and use.
LG's latest LED projectors use a "chocolate" style design, which has also been improved in terms of effects, and is more suitable for fashionable young people.
The technical bottleneck and development direction of LED light source projector
In general, after several years of development, LED light source projectors have already had a certain amount of product performance and technology accumulation, and the latest products have also been able to represent an initially satisfactory picture.
However, the LED light source projector is still facing the biggest "insurmountable" peak, that is, the problem of insufficient brightness, and it is still difficult to replace light bulb type products in practical use. This is also the main reason why it is currently caught in the “difficulty period†of development. The important beam expansion theory in the design of lighting systems can ensure the full use of light energy through calculation.
When the display element and the lens are determined, a matching LED light source can be quickly selected. After a compromise in the design process, the parameters can be confirmed. The brightness of the projection product is most intuitively dependent on the brightness of the LED. At present, the "highest brightness" still cannot meet the requirements of the application, and it is undoubtedly the largest "ceiling" of LED projector development.
However, the luminous efficiency of LEDs has progressed rapidly in recent years. Currently, the luminous efficiency of white LEDs has reached 20 to 30 lumens/W, and the highest has reached 60 lumens/W, and the gap in optical efficiency from the actual requirements of projectors is getting smaller and smaller.
Written in the final: At present, LED light source has a good practice in the application of rear projection TV products, such as Samsung, Sanyo, Chase, Epson, Akai, JVC and other companies have R & D models have been demonstrated, LCD , LCOS, DLP display elements are used, rear projection screen up to 55 inches, although there are insufficient brightness problems, but the overall technology applications worthy of LED projector reference. LED light source will bring more perfect color performance, so that the color reproducibility will be greatly improved. At the same time, the compact size and low power consumption will enable the projector to achieve real-time projection anytime, anywhere, while the small size, long life, fast shutdown and other projection The ultimate appeal of the machine can be solved with LED light sources. Therefore, the LED light source revolution in the projection field is still worth eagerly awaiting.
Digitalization, networking, and multimedia interconnection of projection display technology have been realized. The core components of projection products include light source lighting systems, color separation and color processing systems, projection lenses, image signal processing circuits, and micro display devices. In terms of display effects, the current projection products have been fully able to meet the needs of users.
Of course, the user's expectation for the product is endless, the user wants to be more compact and portable, it is better to be able to conveniently carry the projection product for the application; and it is hoped that the product cost-effectiveness is not just the price of the product, the light bulb, etc. The service life of components is also a very important part. After all, current projection lamps are expensive.
In addition, as the "core" display of projection products, of course, it needs to be guaranteed in the application. The above three major performance improvement requirements, although the new product has been greatly improved, but the "bottleneck" is more and more obvious, because it is closely related to the design of the projection light system, want to get a better product, There must be new and more practical technologies and product applications.
The LED light source technology has been well developed and applied. It can be said that it is one of the most significant new directions for projection.
How LED light source projectors develop on the market today
The application of LED light source projection products was first unveiled before the public. It was at the SID annual meeting held in May 2003, which caused great repercussions for its compact body. However, it was only a conceptual product at that time. What really makes sense is that at the CES show in January 2005, five companies exhibited LED light source pocket projectors at the same time. People began to really consider the advantages and weaknesses of LED light source projection products. After one year of technology and product development, LED light source became a prominent highlight at the CES show in January 2006. A large number of LED light source papers were published at the SID seminar in June 2006, marking a new stage in LED development.
As a result of the emphasis, the performance of the LED light source has been comprehensively improved in the past two years. In terms of core performance, it has better luminous efficiency, greater power, and improved light emission angle and monochromatic light emission performance, thereby increasing the unit light emission brightness. And new products have achieved both AC and DC, and improved thermal management.
These developments make the use of LED light source projection products in the application performance is even better, and the performance improvement also provides a basis for the development of the product market.
LED light source projector has any technical advantages
The application of LED light sources, in the projector, the most important significance is to open up a new path for the miniaturization of the fuselage. As the LED light source is small in size and has many display technology advantages, it is more suitable for research and development of compact projectors and even originals, so that the user's projection is more "carried-out" and "liberalized."
LEDs are used for projection lighting, which not only increase the lifetime, but also change the structure of the projector. Due to the reduced heat dissipation requirements and the shortened light path system, heat dissipation and noise are all better.
At present, LED light sources are mainly used for the integration of small projectors and compact minicomputers. The integrated miniaturized projectors are not made as independent models. They are mainly integrated with miniature display devices such as mobile phones, digital cameras, and laptops. Together, battery-powered, it can project images of about A4 size or standard letter-size for easy sharing with others. Pocket handheld projector is a complete independent model, compact and lightweight, one hand can easily pick up, easy to carry, can be placed in a file package, the future direction of development is business applications. Its AC and DC dual-use, projection screen can be greater than 17 inches, screen brightness of 15 to 200 lumens, with the development of technology, the display is still improving.
Which projectors use LED light sources in the market
LED light source projection products have also passed several generations of development. From the earliest "pocket" projection products of Mitsubishi and Samsung, although the shape design is impressive, the brightness is not enough to support the usual use. The EPSON and BenQ products that appeared later showed more ingenious designs. EPSON products were equipped with two large fans to improve product stability, and BenQ's LED projectors were used in conjunction with their smart phones to create a business image. The practicality of the product is also "not flattered", and it is even difficult to see prototypes.
And tentatively regarded as the "third generation" of LED projector products, including Mitsubishi's new products, Toshiba's popularity promotion products and LG's personalized products, give a very good look in the real applications, Mitsubishi's new LED projection products Raise the brightness on the basis of the previous generation and pay attention to the picture presentation.
Toshiba's new products are even more "productized" and are currently available in the country, and its "overall concept" is excellent. The professional backpack is equipped with a special projection folding screen that can be opened for use. High-gain can complement the projection brightness, and this The backpack is designed to be able to put down notebooks and LED projectors. It is suitable for business people to move and use.
LG's latest LED projectors use a "chocolate" style design, which has also been improved in terms of effects, and is more suitable for fashionable young people.
The technical bottleneck and development direction of LED light source projector
In general, after several years of development, LED light source projectors have already had a certain amount of product performance and technology accumulation, and the latest products have also been able to represent an initially satisfactory picture.
However, the LED light source projector is still facing the biggest "insurmountable" peak, that is, the problem of insufficient brightness, and it is still difficult to replace light bulb type products in practical use. This is also the main reason why it is currently caught in the “difficulty period†of development. The important beam expansion theory in the design of lighting systems can ensure the full use of light energy through calculation.
When the display element and the lens are determined, a matching LED light source can be quickly selected. After a compromise in the design process, the parameters can be confirmed. The brightness of the projection product is most intuitively dependent on the brightness of the LED. At present, the "highest brightness" still cannot meet the requirements of the application, and it is undoubtedly the largest "ceiling" of LED projector development.
However, the luminous efficiency of LEDs has progressed rapidly in recent years. Currently, the luminous efficiency of white LEDs has reached 20 to 30 lumens/W, and the highest has reached 60 lumens/W, and the gap in optical efficiency from the actual requirements of projectors is getting smaller and smaller.
Written in the final: At present, LED light source has a good practice in the application of rear projection TV products, such as Samsung, Sanyo, Chase, Epson, Akai, JVC and other companies have R & D models have been demonstrated, LCD , LCOS, DLP display elements are used, rear projection screen up to 55 inches, although there are insufficient brightness problems, but the overall technology applications worthy of LED projector reference. LED light source will bring more perfect color performance, so that the color reproducibility will be greatly improved. At the same time, the compact size and low power consumption will enable the projector to achieve real-time projection anytime, anywhere, while the small size, long life, fast shutdown and other projection The ultimate appeal of the machine can be solved with LED light sources. Therefore, the LED light source revolution in the projection field is still worth eagerly awaiting.
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