A framework of a process modelling and optimization system for the design, fabrication and evaluation of progressive lenses

Chi Fai Cheung; L. T. Ho; L. B. Kong; Suet To; K. T. Lai

A framework of a process modelling and optimization system for the design, fabrication and evaluation of progressive lenses

Chi Fai Cheung, L. T. Ho, L. B. Kong, Suet To, K. T. Lai

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

Abstract

To provide a clear and comfortable intermediate vision for presbyopic patients, there is a growing need to replace the traditional single vision, bifocal and trifocal lenses by Progressive Addition Lenses (PAL) with a small interval of degree. They are mainly tailor-made and expensive. Injection moulding of PALs is suggested in this paper to reduce the cost, so that more people can afford to have one. Ultra-precision freeform polishing (UPFP) is a technology that can machine precision moulds with submicrometer form accuracy and surface finish in nanometer range. In this paper, a framework of a process modelling and optimization system is presented for supporting the design, fabrication and measurement. A pilot experiment has been done to verify the framework and encouraging results have been obtained.

Original language	English
Title of host publication	Proceedings of the 11th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2011
Publisher	euspen
Pages	409-412
Number of pages	4
Volume	2
ISBN (Electronic)	9780955308291
Publication status	Published - 1 Jan 2011
Event	11th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2011 - Como, Italy Duration: 23 May 2011 → 26 May 2011

Conference

Conference	11th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2011
Country/Territory	Italy
City	Como
Period	23/05/11 → 26/05/11

ASJC Scopus subject areas

Industrial and Manufacturing Engineering
Mechanical Engineering
General Materials Science
Instrumentation
Environmental Engineering

Cite this

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title = "A framework of a process modelling and optimization system for the design, fabrication and evaluation of progressive lenses",

abstract = "To provide a clear and comfortable intermediate vision for presbyopic patients, there is a growing need to replace the traditional single vision, bifocal and trifocal lenses by Progressive Addition Lenses (PAL) with a small interval of degree. They are mainly tailor-made and expensive. Injection moulding of PALs is suggested in this paper to reduce the cost, so that more people can afford to have one. Ultra-precision freeform polishing (UPFP) is a technology that can machine precision moulds with submicrometer form accuracy and surface finish in nanometer range. In this paper, a framework of a process modelling and optimization system is presented for supporting the design, fabrication and measurement. A pilot experiment has been done to verify the framework and encouraging results have been obtained.",

author = "Cheung, {Chi Fai} and Ho, {L. T.} and Kong, {L. B.} and Suet To and Lai, {K. T.}",

year = "2011",

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language = "English",

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pages = "409--412",

booktitle = "Proceedings of the 11th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2011",

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note = "11th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2011 ; Conference date: 23-05-2011 Through 26-05-2011",

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Cheung, CF, Ho, LT, Kong, LB, To, S & Lai, KT 2011, A framework of a process modelling and optimization system for the design, fabrication and evaluation of progressive lenses. in Proceedings of the 11th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2011. vol. 2, euspen, pp. 409-412, 11th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2011, Como, Italy, 23/05/11.

A framework of a process modelling and optimization system for the design, fabrication and evaluation of progressive lenses. / Cheung, Chi Fai; Ho, L. T.; Kong, L. B. et al.
Proceedings of the 11th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2011. Vol. 2 euspen, 2011. p. 409-412.

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

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AB - To provide a clear and comfortable intermediate vision for presbyopic patients, there is a growing need to replace the traditional single vision, bifocal and trifocal lenses by Progressive Addition Lenses (PAL) with a small interval of degree. They are mainly tailor-made and expensive. Injection moulding of PALs is suggested in this paper to reduce the cost, so that more people can afford to have one. Ultra-precision freeform polishing (UPFP) is a technology that can machine precision moulds with submicrometer form accuracy and surface finish in nanometer range. In this paper, a framework of a process modelling and optimization system is presented for supporting the design, fabrication and measurement. A pilot experiment has been done to verify the framework and encouraging results have been obtained.

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ER -

A framework of a process modelling and optimization system for the design, fabrication and evaluation of progressive lenses

Abstract

Conference

ASJC Scopus subject areas

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