Diffraction-limited constant-resolution zoom lens across multi-wavelengths for the Advanced Technology Solar Telescope

An, Hyun Kyoung; Pitalo, Stephen K.

doi:10.1364/iodc.2006.wc3

Cited by 1 publication

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“…The constant-resolution zoom lens for multiple wavelengths originated from an existing patent 1 . It was optimized to solve the unique problem of zooming to achieve a constant resolution for different discrete wavelengths and it satisfied the diffraction-limited resolution requirements for all zoom positions.…”

Section: Introductionmentioning

confidence: 99%

Third order aberration solution using aberration polynomials for a general zoom lens design

Rayces

Reardon

2007

SPIE Proceedings

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A mathematical approach for the third order solution for a general zoom lens design is proposed. The design starts with a first-order layout. Lens elements with the proper refracting power are placed at the proper distances to meet the physical constraints of the intended lens system. For the third-order design stage, a matrix notation called "Aberration Polynomial," which clarifies the linearity of the transformation from a normal thin group configuration to a general thin group configuration by pupil shift and conjugate shift theory is implemented.The purpose of the method is correcting low-order aberrations during the preliminary design of zoom lenses. The goal is to mathematically reduce to zero the four aberration coefficients of the third-order (spherical aberration, coma, astigmatism, and distortion) rather than searching for a minimum by commercial design software. Once this theory is proven and accepted, it becomes possible to determine how many groups are needed for a particular optical system. The method of aberration polynomials establishes the number of groups needed to correct a given number of aberrations at a given number of zoom positions. Furthermore, it provides the shape or bending of the elements, from where it will be possible to continue to optimize with standard methods..

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Section: Introductionmentioning

confidence: 99%