Wide-spectrum multi-channel imaging optical system based on off-axis three mirrors with intermediate image
An imaging optics and off-axis three-mirror technology, applied in optics, spectrometry/spectrophotometry/monochromator, optical components, etc., can solve the problem of increasing the cost of satellite launch, the huge volume and weight of space cameras, and reducing the overall To improve the quality of geometric imaging, reduce the complexity of assembly and adjustment, and simplify the structure
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[0023] like figure 1 and figure 2 As shown, the optical system of the present invention consists of a primary mirror 1, a secondary mirror 2, an infrared channel triple mirror 3, a color separation film 4, a combination filter 5 for medium and short wave channels, and a focal plane for medium and short wave channels of an off-axis three-mirror optical system with an intermediate image. Device 6, long-wave infrared channel combination filter 7, long-wave channel focal plane device 8, visible light channel mirror 9, visible light channel three mirrors 10, and visible light channel focal plane device 11.
[0024] The working spectrum of the optical system of the present invention is 0.45 μm-12.5 μm, which is subdivided into three channels and 12 spectrum sections. The medium and short wave channels share the same field of view with the long wave channel, and do not share the field of view with the visible light channel.
[0025] The spectral bands of 0.45μm-0.52μm, 0.52μm-0.60...
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