Introduction to Projectors
A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to a computer, VCD, DVD, BD, game console, DV, etc. through different interfaces to play the corresponding video signal. Projectors are widely used in homes, offices, schools and entertainment places, and there are different types such as CRT, LCD, DLP, etc., according to different working methods.
Projectors are classified into the following five categories according to the application environment of the projector:
1. Home projector: It is mainly optimized for video. Its characteristics are that the brightness is around 1000 lumens, the contrast ratio is high, the aspect ratio of the projected picture is mostly 16:9, and the various video ports are complete, suitable for playing movies and High-definition TV, suitable for home users.
2. Portable projector: A projector with a weight of less than 2 kg is generally defined as a business portable projector, which is comparable to a thin and light notebook computer. The advantages of business portable projectors are small size, light weight and strong mobility. They are a substitute for traditional slide projectors and large and medium-sized projectors. The first choice for mobile business presentations.
3. Education projector: generally positioned for school and enterprise applications, using mainstream resolution, brightness of about 2000-3000 lumens, moderate weight, better heat dissipation and dust prevention, suitable for installation and short-distance movement, functional interface comparison Rich, easy to maintain, and relatively high performance-price ratio, it is suitable for mass purchase and popular use.
4. Mainstream engineering projectors: Compared with mainstream home projector, engineering projectors have larger projection area, longer distance, high brightness, and generally support multi-bulb mode, which can better cope with large-scale projects. The variable installation environment is suitable for fields such as education, media and government.
5. Professional theater projector: This type of smart portable projector pays more attention to stability, emphasizes low failure rate, and its heat dissipation performance, network function, and convenience of use are very strong. Of course, in order to adapt to various professional applications, the main feature of the projector is its high brightness, which can generally reach more than 5,000 lumens, and the highest can exceed 10,000 lumens. Due to its large size and heavy weight, it is usually used for special purposes, such as theaters, museums, assembly halls, public areas, and can also be used in environments such as monitoring traffic, public security command centers, firefighting and air traffic control centers.
Is projector worth buying?
2022 03/29