Dynamic aberration correction for conformal aircraft windows using the inner window surface and a fixed lens array.

A static solution to dynamic aberrations for conformal aircraft windows with a large range of look angles is reported. The solution uses the inner window surface and a fixed lens array near the image plane to correct the dynamic window aberrations at different look angles. The inner window surface is first used to balance the dynamic aberrations of the full field of regard. Then a lens array is implanted in front of the image, and the dynamic aberrations are corrected by designing the surface shape and rotation direction of each lens unit in the array. The principle of the solution is discussed, and a design example shows that the solution can realize the dynamic aberration correction introduced by the conformal window with a field of regard of ±42. Compared to other dynamic or static correctors, this solution takes into account the large field of regard, the light weight and the stability of the optoelectronic system.