What is the general resolution of home projector?

A projector is an optical instrument, which uses optical elements to enlarge the outline of a workpiece and project it onto a screen. The profile can be measured by transmitted light, and the surface shape of blind holes and the surface of parts can also be measured by reflected light. The projector is especially suitable for measuring complex contours and small workpieces, such as clock parts, stamping parts, electronic components, templates, molds, threads, gears and molding tools, with high detection efficiency and convenient use. Widely used in measuring rooms and production workshops, especially for instruments and watches. A projector, also known as a projector, is a device that can project images or videos onto a screen. You can connect with computer, VCD, DVD, BD, game machine and DV through different interfaces to play corresponding video signals. At present, projectors are widely used in homes, offices, schools and entertainment places. According to different working methods, there are different types such as CRT, LCD and DLP. Home theater type: characterized by a brightness of about 2000 lumens (with the development of projection, this number is increasing and the contrast is relatively high). The aspect ratio of the projection screen is mostly 16:9, and all kinds of video ports are complete, which is suitable for playing movies and HDTV, and suitable for home users. Before choosing to buy a projector, users should be familiar with the use of the projector. When using the projector, it can be divided into three types: table front projection, ceiling front projection, table rear projection, ceiling rear projection and rear projection integrated box. High-brightness projector is dazzling when used in a small environment, which will make eyes tired. Long-term viewing will make eyes red and swollen, and even cause eye diseases. Therefore, according to the specific living room area, the brightness of the selected home projector is generally between 500- 1000 lumens. Too high or too low is not suitable for use in a dark environment.