Comparative study of glass and plastic refractive microlenses and their fabrication techniques

Ottevaere, Heidi; Cox, R. E.; Herzig, Hans Peter; Miyashita, Takehiko; Naessens, Kris; Taghizadeh, Mohammad R.; Völkel, R.; Thienpont, Hugo

doi:10.1117/12.546709

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…In recent decades, tunable focus and freeform lenses have become popular in optical instruments, making them lightweight and compact, such as those used in glasses, cameras, virtual reality and soft polymeric lenses, such as those used in contact lenses, etc. [1][2][3] This has been possible because lens manufacturing techniques have evolved, incorporating polymeric materials due to their excellent chemical and physical properties, which facilitate their manufacturing. Among the techniques developed to manufacture lenses include injection molding, compression or centrifugation, photothermal expansion [4], ion exchange, CO2 laser irradiation, reactive ion etching, photoresist reflow, laser beam shaping, proton or electron beam deep lithography, photopolymerization, microinkjet printing, laser ablation, direct laser writing, hot stamping, turning and ultraprecision diamond milling, electrochemical etching, local grayscale oxidation, photolithography, to name a few [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of aluminum molds using the null screens test

Santiago-Alvarado,

Granados-Agustín,

Percino-Zacarías

et al. 2023

Modeling Aspects in Optical Metrology IX

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Elastic lenses have been used in various optical systems, such as cameras, microscopes and vision systems, to name a few. A recently reported technique consists of making the lens's optical design, subsequently manufacturing an aluminum mold with the optical parameters of the design obtained, and finally injecting the polymer mixture into it to generate the lens. Where the lens surfaces take the shape of the mold surfaces, it is necessary to verify the finish of the mold surfaces so that the manufactured lenses meet the design requirements. In this work, the null screen technique is presented to evaluate the finish of these surfaces. An analysis of the results obtained and their conclusions is offered.

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Section: Introductionmentioning

confidence: 99%

Evaluation of aluminum molds using the null screens test

Santiago-Alvarado,

Granados-Agustín,

Percino-Zacarías

et al. 2023

Modeling Aspects in Optical Metrology IX

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“…in photocopiers). Over the last 15 years several research groups and industrial research labs have therefore been focusing their attention on the development of fabrication techniques for refractive microlenses resulting in a wealth of different technologies [1]. As a general rule we can say that mainly the application will determine the fabrication technique to be used.…”

Section: Introductionmentioning

confidence: 99%

Optical characterization of spherical microlenses: a round robin experiment within the EC Network of Excellence on Micro-Optics (NEMO)

et al. 2006

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Today there exist different commercial and proprietary micro-optics measurement instruments for the characterization of micro-optical components and microlenses in particular. However there is often a lack of a complete quantitative optical characterization of the latter components. Therefore we will focus in this paper on the optical characterization of spherical microlenses. Moreover the results of the performed round robin within the European 6th FP Network of Excellence on Micro-optics "NEMO" will allow us to select the most appropriate instrumentation tools for characterizing refractive spherical microlenses.

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