色散度是指色散元件或色散系统色散能力的大小。常用线色散率或角色散率来度量。同一光学介质,对不同波长光的折射率是不同的,也就是说,对于一枚镜头而言,不同色光的焦点位置实际上是不一样的,这必然导致很多成像问题,其中之一就是色散。在天然材料中,一种叫萤石的矿物质就具有局部色散的超低色散特性。
... 色散超声延迟线 dispersive ultrasonic delay line; 色散度 dispersity; 色散方程 dispersion equation; ...
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本文介绍了一种激光扫描检眼仪的消色散电路。该电路可补偿声光偏转器产生的色散,提高彩色图像的清晰度,增强该仪器的辅助诊断作用。
A dispersion correcting circuit of SLO is presented. The circuit can compensate achromatization produced by the acoustooptic deflector and enhance sharpness of the colour image for better diagnosis.
在用偏振度作为反馈信号的动态偏振模色散补偿系统中,偏振度与差分群延时的关系对于准确快速的动态偏振模色散补偿很重要。
It is important to know how does the degree of polarization (DOP) change with differential group delay (DGD) when DOP is feedback information for adaptive PMD compensation.
但采用偏振度椭球取样方法,其补偿的误码特性明显要优于单偏振度取样,从而补偿了高阶偏振模色散。
When the DOP ellipsoid sampling method is used the performance is evidently better, because the effect of high-order PMD on PMD compensation is reduced.
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