光学仪器的一个重要组成部分是仪器显示面板,利用光学仪器测量物理量所得到的数据大都从显示面板上读出。以前,一般光学仪器常用的显示方式主要有三种,即度盘上的刻度、仪表上的指针和机械计数器上的数字。近年来,光学技术已成为光、机、电、算的综合技术,光学仪器也成为光学、机械学、电子学和计算机技术相结合的新型仪器,常规的机械式显示 An important part of optical instruments is the instrument display panel. Most of the data obtained by measuring the physical quantities by optical instruments are read from the display panel. In the past, there are mainly three kinds of display methods commonly used in general optical instruments, that is, the scale on the dial, the pointer on the instrument, and the number on the mechanical counter. In recent years, optical technology has become a comprehensive technology of optics, mechanics, electricity and computing. Optical instruments have also become new instruments combining optics, mechanics, electronics and computer technology. Conventional mechanical displays