Space refraction and reflection type multichannel imaging optical system
A technology of imaging optics and optical systems, applied in optics, optical components, instruments, etc., can solve the problems of reducing the reliability of the whole satellite, the bulk and weight of the space camera, and increasing the cost of satellite launch, so as to simplify the structure and improve the geometric imaging. Quality, the effect of reducing the complexity of assembly and adjustment
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[0021] Such as figure 1 As shown, the optical system of the present invention consists of an off-axis three-reflection optical system primary mirror 1, a catadioptric secondary mirror 2, an off-axis three-reflection optical system three mirrors 4, a switching mirror 5, a low-light channel focal plane device 6, and a color separation It consists of sheet 7, visible light channel focal plane device 8, and near-infrared channel focal plane device 9. The switching mirror 5 cuts into the optical path when imaging in the low-light channel, and cuts out the optical path when imaging in the visible and near-infrared channels, thereby realizing time-sharing imaging between the low-light channel and the visible and near-infrared channels; the front surface of the dichroic plate 7 is coated with a dichroic film , To achieve reflection in the visible spectrum and transmission in the near-infrared spectrum.
[0022] The optical system of the present invention includes three channels: the low...
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