Placing a diffractive optical element(DOE) on the incident laser beam to improve the depth of focus, the DOE'S aperture is variable.
在入射光束的孔径受限制的情况下，利用衍射光学元件来增加激光束的焦深。
The process was controllable and could be applied to strip the photoresist residual of diffractive optical element fabricated on the thick substrate.
该工艺具有良好的可控性，解决了在厚基片上制作大口径衍射光学元件时残余光刻胶的去除问题。
Based on geometric theory, diffractive optical element s applied to shape laser beams is designed, the phase expression of the diffractive optical elements is deduced.
以几何理论为基础来设计将激光束整形为正方框形光束的衍射光学元件（DOE），推导出了衍射光学元件表面上的相位表达式；
Diffractive-optical element, scanning optical system, optical scanner, and image forming apparatus.
光学衍射元件，光学扫描系统，光扫描器和图像形成装置。
A diffractive refractive optical element used for multimode laser beams is designed to achieve a tiny focused speckle on the predefined output plane.
设计了一种衍折射光学元件用于多模光束的整形和聚焦。
A diffractive refractive optical element used for multimode laser beams is designed to achieve a tiny focused speckle on the predefined output plane.
设计了一种衍折射光学元件用于多模光束的整形和聚焦。
应用推荐