Development status and direction of LED light source projector

After years of technological development and product marketization experience, the projector products developed by using microdisplay devices are quite mature in technology. The projection products can be said to have penetrated into many large-screen display fields such as education, business and home entertainment. There are various types of front projectors and rear projectors available. LCD, LCOS, and DLP are the three main microdisplay projection original technologies. In the general civil field, the size ranges from 0.55 inches to 1.3 inches.

The digitalization, networking and multimedia interconnection of projection display technology have been realized. The core components of projection products include light source illumination system, color separation and color processing system, projection lens, image signal processing circuit and micro display device. In terms of display effects, current projection products are fully capable of meeting the needs of users.

Of course, the user's expectation for the product is endless. The user wants to be more compact and portable, and it is better to carry the projection product for the convenience of the application; and hope that the product is more cost-effective, not only the price of the product, the light bulb, etc. The service life of components is also a very important part. After all, the current projection bulbs are expensive;

In addition, as the "core" of the projection product, the display effect is of course also required to be guaranteed in the application. These three major performance improvement requirements, although the new product has been greatly improved, but the "bottleneck" is also more and more obvious, because this is closely related to the design of the projection optical path system, in order to obtain a better product, There must be newer and more practical technologies and product applications.

The LED light source technology has been well developed and applied, and it can be said that it is one of the most important development directions of projection.

How is the development of LED light source projectors on the market today?

The projection product using LED light source was first unveiled in front of the public. It was at the SID annual meeting held in May 2003. It caused great repercussions with its compact body. However, it was only a concept product. What is really practical is that at the CES show in January 2005, five companies also exhibited LED projectors for LED light sources, and people began to really consider the advantages and weaknesses of LED light source projection products in application. After one year of technology and product development, the 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 of LED development.

As a result of the emphasis, the performance of the LED light source has been improved in the past two years. In terms of core performance, it has better luminosity, greater power, and improved illumination angle and monochromatic luminescence performance, thereby improving unit luminance. And the new product realizes both AC and DC, and improves thermal management.