Coaxial four-mirror ultra-low distortion optical system
An optical system and coaxial technology, applied in the field of aerospace optical remote sensors, can solve the problems that mirror processing, detection and assembly cannot be used, optical design tangential meridional distortion is difficult to control, and mirror processing is difficult, etc. Precise temperature and pointing control, elimination of stray light outside the field of view, high structural stability
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[0025] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0026] In the embodiment of the present invention, the working spectrum is 0.5-0.9 μm, the entrance pupil diameter is 625 mm, the focal length of the optical system is 10 m, the full field of view is 1.5°, and the total length of the system is 1158 mm.
[0027] Such as figure 1 Shown is a structural diagram of the optical system of the present invention, from which it can be seen that the optical system of the present invention includes: a primary mirror 1, a secondary mirror 2, a third mirror 3, a fourth mirror 4, a plane mirror 5 and a receiving image surface 6. The optical axes of the primary mirror 1, the secondary mirror 2, the third mirror 3, the fourth mirror 4 and the plane mirror 5 are on the same straight line and are coaxial. The primary mirror 1 and the secondary mirror 2 constitute a classic R-C system, and form a primary real imag...
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