Figure 2
From: Speckle disturbance limit in laser-based cinema projection systems
The speckle contrast values of the three primary colors of the laser projector as a function of the distance from the screen in the cinema theatre room.
At the bottom we also indicate the position of different rows. Each speckle contrast is the average of about 20 measurements. The symbols are the actual averaged measurement points, the lines are included to guide the eye. The solid lines correspond to the speckle contrast values when a polarizer is placed in front of the projection system and the dashed lines represent the speckle contrast values when a neutral density filter is placed in front of the projection system. Vertical bars correspond to the standard deviation of the measured speckle contrast values.
