In the eyes of many people, to install a large-screen display device at home, we have a lot of products to choose from. If you only choose by category, there are projectors and flat-panel TVs. The main difference between the two is still In terms of screen area, the mainstream mainstream HD flat-panel TVs are mainly 40-60 inches, while the projection screens cover 80-200 inches or even larger screen areas. So before choosing the right product, let's take a look at how big the screen is for your home. Some friends like to install these two products. They usually use flat-panel TVs when watching TV programs, and use a larger screen projection system when watching HD programs or movies. This is indeed a good match. It is worth considering by friends. The fastest and most convenient large screen display solution Want to create a large-screen video playback device at home, flat-panel TV is the best choice, high-definition tablet has many advantages, the first is that the price is relatively cheap, the current 46-inch mainstream size has even dropped to below 4,000 yuan price If you bring 3D and intelligent system, it will be 4,000 yuan, and the cost performance is higher. If the quality requirements are high, foreign brands also have advantages, especially Sony, Sharp, Samsung and other mainstream brand products, not only excellent quality, but also better quality. If you have a demand for smart TV or streaming media services, LeTV TV and Xiaomi TV, which are very hot in the market, are all cost-effective choices. Large screen HD projection system In the process of creating a living room projection system, the home theater projector is a key factor affecting the performance of the image quality. It is a patent for professional audio-visual engineers and audio-visual enthusiasts in terms of purchase, installation and debugging. At present, mainstream projector products mainly have three different display solutions (DLP, LCoS, 3LCD), which differ in their technical advantages and functions. In addition, in the selection of the matching projection screen, you need to consider the scene environment, the projector's image quality performance, installation effects and so on. The large-screen HD projection system plays a vital role in the establishment of the entire audio-visual system. Our suggestion is to first screen the function, first look at the lens displacement, 3D function, brightness output and installation difficulty of the projector, and then select the corresponding projection screen, if you need to install the TV, then An electric projection screen is required. Also consider the placement of the speakers, and whether there is a conflict with the projection screen and the projector. Incremental Encoder is commonly used, and Absolute Encoder is used if there are strict requirements on position and zero position. Servo system should be analyzed in detail, depending on the application situation. Commonly used incremental encoder for speed measurement, which can be used for infinite accumulation measurement; Absolute encoder is used for position measurement, and the position is unique (single or multiple turns). Finally, it depends on the application situation and the purpose and requirements to be realized. Incremental Linear Encoders,Linear Optical Encoder,Linear Position Encoder,Encoder Bearing Tester Yuheng Optics Co., Ltd.(Changchun) , https://www.yhenoptics.com