Aplanatic lens correctors for imaging optics
Rocha, Michelle Cristine
Rocha, Michelle Cristine
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Publication Date
2022-09-05
Type
Thesis
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Abstract
This thesis proposes analytically developed aplanatic field correctors. To begin, an astigmatism correction method for aplanatic Gregorian telescopes was developed employing two lenses with spherical surfaces and a spherical GRIN medium. Sec ond, to expand the field of view of RC telescopes, a meniscus lens with aspherical surfaces has been designed. This meniscus can flatten the image surface while cor recting astigmatism. The meniscus, on the other hand, has lateral color. Finally, using the same principle as the meniscus, a refractive pair has also been designed to increase the FoV in RC telescopes. It does, however, correct the lateral color at the expense of introducing axial color. By adjusting the distance between the pair, this pair may function for various spectral bands individually. All of the methods mentioned above may be added to or removed from an existing aplanatic telescope without compromising image quality or changing the original telescope design. Fur thermore, their employment maintains the telescope’s aplanatic properties.
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NUI Galway