Compared to the conventional interference filter, the main disadvantage of holographic filter is its higher background noise.
与传统的干涉滤光片相比，背景噪声高是全息滤光片的主要缺点。
The reflection holographic filter has ideal filtering property, and can be well used as a kind of elements for eye protection against laser.
反射式全息滤光片具有很好的滤光特性，可作为一种激光防护元件。
In this paper, a method using slanted fringes is introduced, with which the background noise of a reflection holographic filter can be depressed greatly.
本文介绍了用倾斜条纹抑制全息滤光片背景噪声的方法，可以收到较好的效果。
The optical double correlation is a new technique not using a holographic matched filter.
光学双相关技术是一种不用光学全息匹配滤波器的新技术。
The optical double correlation is a new technique not using a holographic matched filter.
光学双相关技术是一种不用光学全息匹配滤波器的新技术。
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