Study of the Transcription Effects of Pressing Dies with Ultrasonic Polishing on Glass Molding

The micro lens array (MLA) has played an important role in optical systems for the past few years, and the precision of pressing dies has dominated the quality of MLAs in glass molding. Few studies have covered the transcription effects on surface roughness of pressing dies for this technology. Ther...

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Autores principales:	Ken-Chuan Cheng, Chien-Yao Huang, Jung-Chou Hung, A-Cheng Wang, Yan-Cherng Lin
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	micro lens array glass molding ultrasonic polishing transcription effect surface roughness Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/ea41bef001e442b99f44e25d634c4358
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spelling	oai:doaj.org-article:ea41bef001e442b99f44e25d634c43582021-11-25T18:52:12ZStudy of the Transcription Effects of Pressing Dies with Ultrasonic Polishing on Glass Molding10.3390/pr91120832227-9717https://doaj.org/article/ea41bef001e442b99f44e25d634c43582021-11-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/2083https://doaj.org/toc/2227-9717The micro lens array (MLA) has played an important role in optical systems for the past few years, and the precision of pressing dies has dominated the quality of MLAs in glass molding. Few studies have covered the transcription effects on surface roughness of pressing dies for this technology. Therefore, this research utilized pressing dies to produce a sine-wave lens array on glass molding, to transform the Gauss-distributed spotlight into a uniform straight one and then characterize the transcription effects of these lenses. Pressing dies with a sine-wave shape were firstly cut by wire electrical discharge machining (WEDM), and then ultrasonic polishing using diamond abrasives was applied to finish the sine-wave surface with an original roughness of 0.2 μm Ra. Next, the sine-wave lens arrays were pressed by glass molding at the appropriate pressure and temperature, before evaluating the transcription effects of transforming the Gauss-distributed spotlight into a uniform straight one. The result showed that the sine-wave lens array stuck easily to the pressing die and then ruptured during glass molding due to the poor surface roughness of pressing tool. However, the diamond abrasive with appropriate sizes could establish good surface roughness on pressing dies via ultrasonic polishing, and the pressing die with a low surface roughness of 0.08 μm Ra was able to successfully perform MLA in the glass molding. However, only pressing dies with a surface roughness smaller than 0.023 μm Ra could produce precision glass lenses to transform the Gauss-distributed spotlight into a uniform straight one.Ken-Chuan ChengChien-Yao HuangJung-Chou HungA-Cheng WangYan-Cherng LinMDPI AGarticlemicro lens arrayglass moldingultrasonic polishingtranscription effectsurface roughnessChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 2083, p 2083 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	micro lens array glass molding ultrasonic polishing transcription effect surface roughness Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	micro lens array glass molding ultrasonic polishing transcription effect surface roughness Chemical technology TP1-1185 Chemistry QD1-999 Ken-Chuan Cheng Chien-Yao Huang Jung-Chou Hung A-Cheng Wang Yan-Cherng Lin Study of the Transcription Effects of Pressing Dies with Ultrasonic Polishing on Glass Molding
description	The micro lens array (MLA) has played an important role in optical systems for the past few years, and the precision of pressing dies has dominated the quality of MLAs in glass molding. Few studies have covered the transcription effects on surface roughness of pressing dies for this technology. Therefore, this research utilized pressing dies to produce a sine-wave lens array on glass molding, to transform the Gauss-distributed spotlight into a uniform straight one and then characterize the transcription effects of these lenses. Pressing dies with a sine-wave shape were firstly cut by wire electrical discharge machining (WEDM), and then ultrasonic polishing using diamond abrasives was applied to finish the sine-wave surface with an original roughness of 0.2 μm Ra. Next, the sine-wave lens arrays were pressed by glass molding at the appropriate pressure and temperature, before evaluating the transcription effects of transforming the Gauss-distributed spotlight into a uniform straight one. The result showed that the sine-wave lens array stuck easily to the pressing die and then ruptured during glass molding due to the poor surface roughness of pressing tool. However, the diamond abrasive with appropriate sizes could establish good surface roughness on pressing dies via ultrasonic polishing, and the pressing die with a low surface roughness of 0.08 μm Ra was able to successfully perform MLA in the glass molding. However, only pressing dies with a surface roughness smaller than 0.023 μm Ra could produce precision glass lenses to transform the Gauss-distributed spotlight into a uniform straight one.
format	article
author	Ken-Chuan Cheng Chien-Yao Huang Jung-Chou Hung A-Cheng Wang Yan-Cherng Lin
author_facet	Ken-Chuan Cheng Chien-Yao Huang Jung-Chou Hung A-Cheng Wang Yan-Cherng Lin
author_sort	Ken-Chuan Cheng
title	Study of the Transcription Effects of Pressing Dies with Ultrasonic Polishing on Glass Molding
title_short	Study of the Transcription Effects of Pressing Dies with Ultrasonic Polishing on Glass Molding
title_full	Study of the Transcription Effects of Pressing Dies with Ultrasonic Polishing on Glass Molding
title_fullStr	Study of the Transcription Effects of Pressing Dies with Ultrasonic Polishing on Glass Molding
title_full_unstemmed	Study of the Transcription Effects of Pressing Dies with Ultrasonic Polishing on Glass Molding
title_sort	study of the transcription effects of pressing dies with ultrasonic polishing on glass molding
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/ea41bef001e442b99f44e25d634c4358
work_keys_str_mv	AT kenchuancheng studyofthetranscriptioneffectsofpressingdieswithultrasonicpolishingonglassmolding AT chienyaohuang studyofthetranscriptioneffectsofpressingdieswithultrasonicpolishingonglassmolding AT jungchouhung studyofthetranscriptioneffectsofpressingdieswithultrasonicpolishingonglassmolding AT achengwang studyofthetranscriptioneffectsofpressingdieswithultrasonicpolishingonglassmolding AT yanchernglin studyofthetranscriptioneffectsofpressingdieswithultrasonicpolishingonglassmolding
_version_	1718410625901658112

Study of the Transcription Effects of Pressing Dies with Ultrasonic Polishing on Glass Molding

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