本文介绍的是80年代末期日本、美国出现的一种新型激光束扫描器。它是在一个大圆盘的圆周上,环形地依次排列若干个外表轮廓不同的透镜,圆盘的转动使从激光源射来的激光束依次通过透镜,从而形成精确的光学扫描。圆盘和透镜均由树脂材料模制而成。这种装置已在美国和欧洲得到广泛的应用。 This article describes a new type of laser beam scanner that appeared in Japan and the United States in the late 1980s. On the circumference of a large disc, a plurality of lenses with different outer profiles are annularly arranged on the circumference of a large disc. The rotation of the disc causes the laser beams emitted from the laser sources to pass through the lenses one by one so as to form an accurate optical scan. Discs and lenses are molded from a resin material. This device has been widely used in the United States and Europe.