The Design Of Large Field Of View, Long-Focus And All Reflective Space Optical System

Since the non-spherical surface was firstly proposed in the 17th century, it had been widely used for its good optical performance. With the development of electronics, astronavigation, aviation, astronomy, laser nuclear fusion, optical communications, military and so on, the aspheric optical components were applied in many optical instruments especially in the space optics. The astronavigation optical system was developed from the refractive format firstly to the catadioptric and reflective format. It needs reflective system to increase the focal length, enlarge the aperture, decrease the volume, reduce the weight, broaden the spectrum coverage, reduce the cost of the optical system. So the astronavigation optical remote sensing adopted the reflective optical system more and more. Moreover, off-axis reflective optical system is widely concerned because it has no central masking, its volume can be decreased and its structure is compact, and it can offer the imaging of large field and high performance.In this paper we studied the basic theory and the designing method of three-reflector optical system, the classification and design feature of coaxial and off axis three-mirror optical systems, and designed the satisfactory off-axis three-mirror optical system with the large field of view, high-resolution and long-focal-length.