After range finding, "0000" displayed on displayer on the upside of right eyepiece indicates no laser, reasons may.
当测距之后，左目镜上排显示器显示“0000”，表示无激光。产生无激光原因是。
The application of diffractive optical elements in laser systems, optical interconnects, wave-front sensing, eyepiece design and scanning systems. Current highlights are also discussed.
本文主要介绍了衍射光学元件在激光系统、光学互连、波前探测、目镜设计和扫描系统上的应用，以及目前技术上的热点。
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