S&M Young Researcher Paper Award 2020
Recipients: Ding Jiao, Zao Ni, Jiachou Wang, and Xinxin Li [Winner's comments]
Paper: High Fill Factor Array of Piezoelectric Micromachined
Ultrasonic Transducers with Large Quality Factor

S&M Young Researcher Paper Award 2021
Award Criteria
Notice of retraction
Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
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Freeform Surface Lens Design Using Genetic Algorithm with Acrylic Material for Reducing Aberrations in Multifocal Artificial Intraocular Lens to Enhance Image Sensing Quality

Chih-Ta Yen and Shih-Cyuan Jin

(Received May 25, 2021; Accepted December 2, 2021)

Keywords: intraocular lens (IOL), third-order aberrations, freeform surface lens, genetic algorithm (GA)

A complex intraocular lens (IOL) design involving numerous uncertain variables is proposed. We integrated a genetic algorithm (GA) with a freeform surface lens by using CODE V optical design software to design a multifocal IOL for the human eye. We mainly used a freeform surface lens of acrylic material in the initial crystalline state to enhance image sensing quality; therefore, we used the internal human eye model in the software. The proposed optimization algorithm employs a GA method to optimally simulate the focusing function of the human eye; in this method, the thickness and curvature of the anterior lens and the posterior part of the IOL were varied. We performed a comparison of the proposed GA-designed IOLs and those designed using a CODE V built-in optimization algorithm for the hyperopia 300 degree condition of the human eye. When the pupil entrance was 6 mm, the proposed IOL design improved the RMS of the spot diagram by approximately 11.99% and 10.65% for human eye to object distances of 35 cm and infinity, respectively. Moreover, the modulation transfer function was improved by approximately 5.06% and 15.06% for distances of 35 cm and infinity at a spatial frequency of 15 cycles/mm, respectively.

Corresponding author: Chih-Ta Yen

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