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Proceedings Paper

Unique cost-effective approach for multisurfaced micro-aspheric lens prototyping and fabrication by single-point diamond turning and micro-injection molding technology
Author(s): Ashley Min-Hang Pun; Chi-Choy Wong; Norman Sin-Wing Chan; Derek Chi-Hang Louie; Li-Man Li
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Paper Abstract

The latest development of sophisticated high-precision optical devices necessitates precision fabrication methodologies of freeform microlens having very tight, up to micron tolerance. Instead of adopting high-end multi-axis freeform machining approach, the proposed acrylic multi-surfaced microaspheric lens, with the axial diameter of 1.3mm, was cost-effectively prototyped and fabricated by single point diamond turning and micro-injection molding technology respectively. The micro-optical component was used as an opto-electronic module for high-speed data-transmission in fiber optics. Sequential fixturing technique was applied to facilitate the precise fabrication of the optical surfaces from different optical alignments. The aspherical accuracy and surface finish of the machined surfaces were evaluated, and end result was determined to be satisfactory. Further, the ultra precision tooling would be developed for micro-injection molding for carrying out mass production of the micro-optical component.

Paper Details

Date Published: 26 February 2004
PDF: 8 pages
Proc. SPIE 5252, Optical Fabrication, Testing, and Metrology, (26 February 2004); doi: 10.1117/12.513200
Show Author Affiliations
Ashley Min-Hang Pun, Hong Kong Productivity Council (Hong Kong China)
Chi-Choy Wong, Hong Kong Productivity Council (Hong Kong China)
Norman Sin-Wing Chan, Hong Kong Productivity Council (Hong Kong China)
Derek Chi-Hang Louie, Hong Kong Productivity Council (Hong Kong China)
Li-Man Li, Hong Kong Productivity Council (Hong Kong China)


Published in SPIE Proceedings Vol. 5252:
Optical Fabrication, Testing, and Metrology
Roland Geyl; David Rimmer; Lingli Wang, Editor(s)

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