| 术语 | laser scanner |
| 释义 | laser scanner 激光扫描器［仪］;［雷射扫描器］ A hardcopy output device that uses photographic film and a laser to create images. The film is mounted inside a light proof drum that rotates rapidly. At the same time, a laser, mounted on a track that runs the length of the drum moves back and forth, exposing the film with a lightly precise, modulated beam of light. Laser scanners are used in applications where high resolution and high precision is essential, such as satellite shots. 一种硬拷贝输出设备,它使用照相底片和激光产生图象。底片装在一个不透光的鼓的内 侧,鼓迅速转动。同时,激光器装在一个轨道上并沿鼓的长轴方向作往复运动,激光器以高精 度的调制光束使底片曝光。激光扫描器在要求高分辨率和高精度的情况下使用,例如卫星照 片的成图。 |
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