利用后置式固定校正板进行共形光学系统像差校正

Conformal optical system aberration correction with later holding fixed corrector

共形整流罩具有良好的空气动力学性能,但非球面的外形引入了随观察视场不断变化的非轴对称像差,通常采用固定校正板和动态校正机构来补偿各观察视场中整流罩引入的大像差和动态像差。为避免动态校正机构对系统稳定性造成的影响,提出了将固定校正板置于实际成像系统后或实际成像系统中的大像差和动态像差的补偿校正方案。软件模拟结果表明:将折衍混合固定校正板后置的折反式共形光学系统模拟结构能够获得动态范围仅为0.12个波长的点斑设计结果,且系统避免了动态像差补偿机构的使用,有利于稳定性的提高。

Conformal dome could provide better aero-dynamically surfaces than traditional domes.However,the highly aspheric surface may introduce serious aberrations which change with the field of regard,and the fixed corrector or dynamic correction mechanism can be used to correct aberrations in large field of regard.Systems with lateral holding fixed corrector in or behind the real searching system could get rid off the moving corrector and provide better stability performance.The simulation result shows that the spot size of this system only have 0.12 waves′ changing extent.It avoids the use of dynamic aberration correction mechanism and improves the system stability.