LCD panel projector

The imaging device is a liquid crystal panel and is a passive projection method. Use an external light metal halide lamp or UHP (cold light source). According to the number of LCD panels, LCD projectors are divided into three machines and single-chip microcomputers. The principle of the three LCD panel projectors is that the optical system uses strong light to form three beams of RGB light through a beam splitter and transmits RGB three-color liquid crystal plates respectively; the signal source is converted by AD and the modulation is applied to the liquid crystal panel, and the liquid crystal cell is turned on , Closed, in order to control the light path on and off, RGB light finally converge in the prism, the projection lens projected on the screen to form a color image. At present, the three-plate projector is the main model of the liquid crystal panel projector. The LCD single board projector is small in size, light in weight, and extremely convenient to operate and carry. The price is relatively low. However, the light source has a short life span, the colors are not uniform enough, and the resolution is low. Currently, there are few models of single-board projectors. From the image quality, the performance of the single-chip microcomputer is less than that of the three-chip machine.