Speckle contrast reduction including high speed generation of images with different speckle patterns

A speckle reduction system is provided and includes a speckle reduction component and a control module. The speckle reduction component includes electrode layers and a liquid crystal layer. The liquid crystal layer is disposed between the electrode layers and is configured to receive light from a coherent light source. The control module is configured to (i) supply a first voltage signal having a first voltage to the electrode layers to provide a first speckle pattern output, and (ii) supply a second voltage signal having a second voltage to the electrode layers to provide a second speckle pattern output, wherein the first voltage and the second voltage are greater than zero. The control module is configured to transition between providing the first voltage signal and the second voltage signal in less than at least one of half an integration time of a human eye or 8 milliseconds. 提供了一种散斑减少系统，并且其包括散斑减少部件和控制模块。散斑减少部件包括电极层和液晶层。液晶层设置在电极层之间，并被配置成接收来自相干光源的光。控制模块被配置成（i）向电极层供应具有第一电压的第一电压信号以提供第一散斑图案输出，以及（ii）向电极层供应具有第二