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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 5 — Mar. 3, 2008
  • pp: 3041–3048

Fabrication of large area resin microlens arrays using gas-assisted ultraviolet embossing

Po-Hsun Huang, Tzu-Chien Huang, Yi-Ting Sun, and Sen-Yeu Yang  »View Author Affiliations


Optics Express, Vol. 16, Issue 5, pp. 3041-3048 (2008)
http://dx.doi.org/10.1364/OE.16.003041


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Abstract

Large-area microlens arrays are becoming important components in many applications such as LCD-TV diffusers. This paper reports a uniform pressure, low temperature process for their fabrication. The process integrates gas-assisted embossing and UV-curing embossing. During the process, the 230mm×203mm PMMA substrate is pressed against the stainless-steel stamper coated with UV-curable resin. Under the gas pressuring and UV irradiating, a large array of microlens can be formed. By using this process, high embossing temperature and high embossing pressure can be avoided. Little residual stress is observed in the embossed PMMA substrate. The uniformity of large-area fabrication and optical properties of fabricated resin microlens array have been verified. This study has successfully shown the potential of this gas-assisted UV embossing process for the replication of large-area microstructures.

© 2008 Optical Society of America

OCIS Codes
(220.0220) Optical design and fabrication : Optical design and fabrication
(220.4000) Optical design and fabrication : Microstructure fabrication
(230.0230) Optical devices : Optical devices
(230.3990) Optical devices : Micro-optical devices

ToC Category:
Optical Design and Fabrication

History
Original Manuscript: January 3, 2008
Revised Manuscript: February 10, 2008
Manuscript Accepted: February 14, 2008
Published: February 20, 2008

Citation
Po-Hsun Huang, Tzu-Chien Huang, Yi-Ting Sun, and Sen-Yeu Yang, "Fabrication of large area resin microlens arrays using gas-assisted ultraviolet embossing," Opt. Express 16, 3041-3048 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-5-3041


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References

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