纤维镜利用光学纤维制成的一种韧性仪器，用于对一些用其它方法无法接近的物体或区域（如体腔）进行检查 A flexible fiber-optic instrument used to view an object or area, such as a body cavity, that would otherwise be inaccessible.
他们致力於提高该光学影像的鲜明度。 They concentrated on better definition of the optical image.
他精通光学。 He is well versed in the science of optics.
望远镜和显微镜是光学仪器。 Microscopes and telescopes are optical instruments.
