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投影机主要通过三种显示技术实现,即CRT投影技术、LCD投影技术及这些年才显露锋芒的DLP投影技术。 CRT技术成熟,显示图像色彩丰富,还原性好,具有很强的几何失真调整能力;但其重要技术指标图像分辨率与亮度相互制约,直接影响CRT投影机的亮度值,特别是会聚调整繁琐,机身体积大,只适合安装于环境光较弱、相对固定的场所,不宜搬动。 LCD投影机分为液晶板和液晶光阀两种。液晶光阀投影机采用CRT管和液晶光阀作为成像器件。它是CRT投影机
Projector mainly through the three display technologies to achieve, that is, CRT projection technology, LCD projection technology and these years revealed the edge of the DLP projection technology. CRT technology is mature, showing the image rich in color, good reduction, with a strong ability to adjust the geometric distortion; but its important technical indicators of image resolution and brightness constraints, a direct impact on the CRT projector brightness value, especially the convergence adjustment cumbersome, Body size, only suitable for installation in the weaker ambient light, relatively fixed place, should not be moved. LCD projector is divided into two kinds of LCD panels and liquid crystal light valve. LCD light valve projector CRT tube and liquid crystal light valve as the imaging device. It is a CRT projector