Analysis on the optical axis error of the spherical shell in the electro-optical system

Based on the plane geometry and stereo geometry theory and the light refraction law, the output laser axial deviation angle is calculated in theory after passing through the spherical shell. Considering the detection and the launch system with different wavelength, the error between the detection and the launch is analyzed and the relationship is calculated. The calculated results show that the optical axis error must be considered when the wavelength is different between detection and the launch system. At the same time, the optical axis error should be compensated in the electro-optical system to achieve accurate detection and target tracking.