DMD-based front oblique image optical system of aperture coding spectral imager
A spectral imager and optical system technology, applied in the field of optics, can solve problems such as the inability to apply in the mid-wave infrared band, and achieve the effects of flexible and fast modulation, cost reduction, and volume reduction
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[0031] The present invention will be further described below in conjunction with accompanying drawing.
[0032] Such as figure 1 As shown, the front oblique optical system of this embodiment includes a first spherical mirror 1 , a second spherical mirror 2 , a third spherical mirror 3 , a fourth spherical mirror 4 and a DMD encoding device 5 arranged in sequence along the same optical path.
[0033] The first spherical mirror 1 is used as a stop, the second spherical mirror 2 is arranged eccentrically, the first spherical mirror 1 and the third spherical mirror 3 are rotationally symmetrical around the optical axis of the entire front oblique image optical system, and the fourth spherical mirror 4 is eccentric and inclined about the optical axis setting, distant objects are imaged on the inclined DMD encoding device 5 .
[0034] refer to figure 1 , define the sequence number of the mirror surface of each optical element (i.e. the first spherical mirror 1-the fourth spherical...
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