Compact catadioptric type athermalization imaging spectrometer
An imaging spectrometer and catadioptric technology, which is applied in the field of spectral imaging, can solve the problem that large relative aperture, long slit and compact structure cannot be satisfied at the same time, and cannot meet the application requirements of large field of view, high signal-to-noise ratio and hyperspectral remote sensing, and the performance of spectrometer. Affected by temperature changes and other problems, to achieve the effect of reducing production and development costs, compact structure, and maintaining stable image quality
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Embodiment 1
[0037] See attached figure 1 and 2, which are the front view of the optical path and the top view of the optical path of the compact reentrant athermal imaging spectrometer provided in this embodiment; the imaging spectrometer includes an incident slit 2, an object prism 3, a plano-convex lens 4, a meniscus lens 5, and a Mirror 6, convex grating 7, image square prism 8, optical filter 9 and focal plane 10, 3.1 is the incident surface of the object prism, 3.2 is the reflection surface of the object prism, and 3.3 is the exit of the object prism 4.1 is the plano-convex lens plane, 4.2 is the convex surface of the plano-convex lens; 5.1 is the concave surface of the meniscus lens, 5.2 is the convex surface of the meniscus lens; 6.1 is the concave surface of the thick fold mirror, 6.2 is the convex surface of the thick fold mirror; 8.1 is the incident surface of the image square prism, 8.2 is the reflection surface of the image square prism, and 8.3 is the exit surface of the ima...
Embodiment 2
[0052] See attached Figure 7 , which is the optical system when the grating of the compact reentrant athermalized imaging spectrometer provided in this embodiment is located on the convex surface of the plano-convex lens. It includes an entrance slit 2, an object prism 3, a plano-convex lens 4, a meniscus lens 5, a thick folding mirror 6, a convex grating 27, an image square prism 8, an optical filter 9 and a focal plane 10, as described in 3.1 The incident surface of the object prism, 3.2 is the reflective surface of the object prism, 3.3 is the exit surface of the object prism; 4.1 is the plano-convex lens plane, 4.2 is the convex surface of the plano-convex lens; 5.1 is the concave surface of the meniscus lens, and 5.2 is the meniscus lens The convex surface of the moon lens; 6.1 is the concave surface of the thick catadioptric mirror, 6.2 is the convex surface of the thick catadioptric prism; 8.1 is the incident surface of the image square prism, 8.2 is the reflection sur...
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