Structural design of broken contact doublets with prespecified aberration targets using genetic algorithm

Banerjee, Saswatee; Hazra, Lakshminarayan

doi:10.1080/09500340110107171

Cited by 23 publications

(16 citation statements)

References 15 publications

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“…The three types of zoom lens offer three, five, and nine positions, respectively, designated by T 1-1 , T 1-2 , T 1-3 , T 2-1 , T 2-2 , T 2-3 , T 2-4 , T 2-5 , T 3-1 , T 3-2 , T 3-3 , T 3-4 , T 3-5 , T 3-6 , T 3-7 , T 3-8 , T [3][4][5][6][7][8][9] . Calculations for each position are executed three times by the GA method, and one time only by CODE V software.…”

Section: Analysis Of Experimental Resultsmentioning

confidence: 99%

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Eliminating lateral color aberration of a high-resolution digital projection lens using a novel genetic algorithm

Fang

Liu

2007

Opt. Eng

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Advances in digital image optics have increased the significance of lateral color aberration because it is easily seen in the projected area. The choice of optical glass plays a role in the elimination of lateral color aberration. Current optical software still has difficulty in finding the optimal combination of optical glasses for twelve or more elements in a projection lens, the choice being among at least 300 optical glasses that have been developed. Even the modern damped least squares, a raytracing-based method, is limited, owing to its inability to identify an enhanced optical system configuration. As an alternative, this research proposes a new optimization process by using algorithms involving the theory of geometric optics in a projector lens, real encoding, multiple dynamic crossover, and random gene mutation techniques. Results and conclusions show that attempts to achieve negligible axial and lateral color aberration are successful.

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Section: Analysis Of Experimental Resultsmentioning

confidence: 99%

“…The literature includes few reports of the use of genetic algorithms ͑GAS͒ in lens design optimization. [4][5][6][7] This study introduces a GA method with a view to eliminate axial chromatic and lateral color aberrations. Basically, optical design is a process of establishing an imaging or focusing system.…”

Section: Introductionmentioning

confidence: 99%

Eliminating lateral color aberration of a high-resolution digital projection lens using a novel genetic algorithm

Fang

Liu

2007

Opt. Eng

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“…A check on genetic diversity [37] of the population is undertaken and in the case of low diversity, the population is reinitialized, retaining only the elite member. The merit function ψ is redefined as weighted sum of intensities over equidistant points in three regions along the longitudinal or transverse axis.…”

Section: Dynamic Merit Functionmentioning

confidence: 99%

Super-resolution by pupil plane phase filtering

Hazra

Reza

2010

Pramana - J Phys

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Resolution capability of any optical imaging system is limited by residual aberrations as well as diffraction effects. Overcoming this fundamental limit is called super-resolution. Several new paradigms for super-resolution in optical systems use 'a posteriori' digital image processing. In these ventures the three-dimensional point spread function (PSF) of the lens plays a key role in image acquisition. A straightforward tailoring of the PSF can be performed by appropriate pupil plane filtering. With a brief review of the state-of-art in this research area, this paper dwells upon the inverse problem of global optimization of the pupil function by phase filtering in accordance with the desired PSF.

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“…can be expressed in terms of overall conjugate variable Y and the normalized power of the doublet. They are given by the following expressions: Y is expressed as: u' +u Y=--hK (10) (11) u and u' are the convergence angles for the paraxial marginal ray in the object and the image spaces. respectively.…”

Section: B Fitness Function Merit Function and Central Aberrationsmentioning

confidence: 99%

Optimum Values for Genetic Operators in Evolutionary Optimization of Structural Design of Cemented Doublets

Chatterjee

Hazra

2004

J Opt

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This paper reports results of our investigations all the effects of variation ill values for gellelic operators. namely, the crossover probability. the mutatioll probability and the threshold genelic diversity in acceptable popUlations, on evolutionary optimizatioll of structural design of cemented doublets. II is observed thai the convergence of the optimization TIm to the desired goals depends sigllijicamly 011 the choice of vailles for the genetic operators. OptilllulII vailles for avoiding undue stagnation andfor enhancing speed of convergence are reported.

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Structural design of broken contact doublets with prespecified aberration targets using genetic algorithm

Cited by 23 publications

References 15 publications

Eliminating lateral color aberration of a high-resolution digital projection lens using a novel genetic algorithm

Eliminating lateral color aberration of a high-resolution digital projection lens using a novel genetic algorithm

Super-resolution by pupil plane phase filtering

Optimum Values for Genetic Operators in Evolutionary Optimization of Structural Design of Cemented Doublets

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