As long as the projector purchase knows these points, it is easy to be a “knowledge”

Thinking back to the 1980s, the basic home had a very good TV, and the choice of display equipment was very small. With the advancement of technology, a variety of devices such as mobile phones, tablets, and projectors have rapidly entered the market and are fully integrated into people's lives. Among these, the projector's large-screen advantage has become the first choice for users to build private theaters and is loved by the majority of users. Today, I will introduce you to the projector purchase points and the current development situation.
At present, the display technology used in the home projector panel is mainly DLP and 3LCD. The DLP has a high contrast ratio and strong picture performance. Taiwanese manufacturers use this technology to represent BenQ, Optoma, and Vivitek. What is more interesting is that DLP technology is the most widely used intelligent micro-investment in the market. The 3LCD is particularly good in terms of its color expression, but its native contrast ratio is relatively low. Most Japanese brands adopt this technology, such as Epson and NEC.
Brightness: Based on the average user's home living room is about 20 square meters, projection brightness in the 2000-3000 range is appropriate, why is the interval because we have to consider the strength of the indoor environment. In addition, the choice of brightness is not the higher the better, need to match the other attributes with it, otherwise there will be color cast, image distortion and other phenomena, too high brightness will make the eyes easily fatigue, there is a certain degree of damage.
Resolution: At present, the mainstream resolution in the market is still 720P, 1080P models, although in 2016 there are a large number of 4K models out, but the price is very expensive and not suitable for ordinary users to buy. After the market precipitated, the 720P model gradually withdrew from the market, and the 1080P model became the mainstream model. Its price was between 3999 and 11999. For the current slow popularity of 4K, the choice of the 1080P model is still relatively cost-effective. In recent years, there have been fiery micro-projections in the projection market. Although 1080P products have been introduced in 2016, the market is still dominated by 720P models.

Contrast: The higher the contrast, the better the detail of the image and the richer levels. It is worth noting that the concept of dynamic contrast was introduced. There are no lack of 10W:1 models, but the dynamic contrast needs to be displayed under special circumstances. The actual significance for consumers is not great.
After understanding the characteristics of these several properties, and then go to select the projector, everyone will have a bottom, and not a black eye.
The homogeneity of current projector products is serious, and after manufacturers gradually subdivide users, they will improve or add some functions to improve the usability of the machine. These functions are still effective in our actual use.

Real-time autofocus: When the distance between the projector and the screen changes, the screen will appear unclear, manual adjustment is not only troublesome and very cumbersome. I think for the home user, this feature should be regarded as love, and now the family likes to keep pets. Inevitably, during use, naughty pets will touch the projector and cause it to shift again. Focus, with autofocus these problems can be solved.

Wireless projection: Now many projectors are equipped with wireless modules in the machine or externally, and when they are based on the same network, they can connect wirelessly with the terminal display device they want to connect to, and play the user's desired content in real time on the same screen. In addition, in the projection installation is the most troublesome for the interoperability is the wiring, and tedious does not say, if the line did not go well, messy lines like a spider's web as very ugly, and wireless connection can eliminate these troubles.

Interface and resources: Under the intelligent drive, the projector manufacturer will integrate the UI interface developed by the basic Android system in the projector to help users manage the application. At the same time, it cooperated with major video resource operators to join massive video resources to meet the viewing requirements of the majority of users. This is still more in line with the current user's taste.
Today we introduced the basic properties and development of the projector for you, and we hope to help users choose a projector. For the new features, we only introduce some of them. Users can follow their own needs to understand and we will continue to sort out and summarize for everyone. A special hint is that, at the user level, it is still necessary to consider whether the included features are useful, and do not pay for some tasteless features.

Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.

Plane Diffraction Grating

Planar gratings are mainly used for spectrum analysis and light wavelength measurement. It is an optical device composed of a large number of parallel slits of equal width and equal distance. There are many types of gratings. The commonly used grating is made by engraving a large number of parallel notches on the glass. The nicks are divided into opaque parts, and the smooth part between the two nicks can transmit light. The exquisite grating produced by our company has thousands to tens of thousands of nicks within 1CM width, and the light passes through the grating. The resulting spectrum is the result of single-slit diffraction and multi-slit interference.

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