这种轻触型工具播放的近距离图像是在0.4英寸的微小型显示器上反射的激光形成的，使用全息摄影术以保持图画尽管在投影尖角上依然聚焦。
The Light Touch casts a big image from up close by bouncing lasers off a 0.4-inch microdisplay, using techniques from holography to keep the picture in focus despite the sharp projection angle.
全息图是用精细聚焦的离子束在一片30n m厚的薄硅膜上切割出20nm长的极小的裂纹的图案组合而成的。
The holograms were fabricated using a very finely focused ion beam to cut a pattern of extremely small slits just 20 nm across through a thin silicon membrane 30 nm thick.
基于自聚焦误差检测和光路可逆原理，分析并实验证明了利用一种多功能全息透镜来测量类镜表面平整度的可行性。
A multifunctional holographic lens is presented based on autofocus error detection and the principle of reversibility of light. Its feasibility of the mirror-like surface is described.
讨论了全息光学头聚焦误差信号检测的基本原理。
The principle of the detection of the focusing error signal in a holographic optic head is dis - cussed.
本文将计算全息图通过紧聚焦飞秒激光脉冲诱导的微爆机制直接记录在玻璃内部，从而得到永久性的计算全息图。
In this thesis, the CGH was recorded directly inside silica glass step by step controlled by PC using a tightly focused femtosecond laser pulses with the mechanism of micro-explosion.
本文将计算全息图通过紧聚焦飞秒激光脉冲诱导的微爆机制直接记录在玻璃内部，从而得到永久性的计算全息图。
In this thesis, the CGH was recorded directly inside silica glass step by step controlled by PC using a tightly focused femtosecond laser pulses with the mechanism of micro-explosion.
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