Simulating the human eye in measurements of speckle from laser-based projection displays

In quantitative measurement of the speckle observed in laser projection displays, it is essential how accurately one simulates the human eye. Based on the eye model given by Westheimer, we succeeded in simulating the optical transfer function of the eye model using that for the circular aperture. The equivalent circular aperture diameter is dependent on the eye model used in the simulation and its viewing conditions, but particularly for the eye models given by Westheimer and Williams, they substantially agreed, yielding approximately 1.2 mm at green under a 3 mm pupil diameter viewing condition.