Optical system design for large FOV attitude angle sensor

Based on photoelectric collimating and pinhole imaging theory, combined with virtual extension of imaging, a new type of large FOV two dimension attitude angle measuring method is proposed. Pinhole aperture and a group of high precision reflectors are set as the optical system. Directed by Fresnel-Kirchhoff diffraction theory, the imaging model of the optical system is established. The model and optimized parameters of the optical system are designed via computer numeric simulation. A hardware measuring system based on the simulation result is set up to analyze and verify the design. The results show that the optical system design is reasonable and can meet the requirements of large FOV attitude angle sensor.