Development of a Novel Rapid Manufacturing Process for Micro-Cylindrical Lens Array

Abstract:

This paper proposed a novel method to fabricate micro-cylindrical lens array (μ-CLA) by using wire electrical discharge machining (WEDM) and precision glass molding (PGM) technique. Micro slits fabricated on the surface of tungsten carbide mold material with outline dimensions from 0.3mm to 2.1mm, the width and depth of 1 mm. The PGM processing parameters including width of slits, molding temperature, molding force and stroke were discussed. Moreover, the characteristics of μ-CLA were measured by contact profilometer. In addition, the relationship between the dimensions of the slit on tungsten carbide mold and the characteristics of μ-CLA also discussed.

• Periodical: Advanced Materials Research (Volumes 264-265)
• Pages: 78-83
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.264-265.78
• Online since: June 2011
• Authors: Chien Yao Huang, Kuo Cheng Huang, Jun Cheng Chen, Keng Souo Chang, Shih Feng Tseng, Chang Pin Chou
• Keywords: Glass Molding , Line Generator, Micro Cylindrical Lens Array, μ-CLA

References

[1] J. Hsieh, C. -J. Weng, H. -L. Yin, H. -H. Lin, H. -Y. Chou, Realization and characterization of SU-8 micro cylindrical lenses for in-plane micro optical systems, Microsystem Technologies , Vol. 11, (2005), p.429.

DOI: 10.1007/s00542-004-0463-7

[2] C-C. A. Chen, S-W. Chang, C-J. Weng, Design and Fabrication of optical homogenizer with micro structure by injection molding process, Proc. SPIE, Vol. 7058, (2008).

[3] Li- Wei Pan, Liwei Lin and Jun Ni, Cylindrical Plastic Lens Array Fabricated by A Micro Intrusion Process, Micro Electro Mechanical Systems, Twelfth IEEE International Conference, (1999), p.217.

DOI: 10.1109/memsys.1999.746815

[4] Jianming Hu, Shouyue Wu, Yu Zhang, Yiping Liang, and Teli Dai, Study on gradient index micro-cylinder lens with gradual focus, Proc. SPIE, Vol. 7158, (2008).

[5] Lamprecht Jürgen; Lindlein Norbert; Schwider Johannes, Characterization of cylindrical micro-lenses in transmitted light and with grazing incidence interferometry in reflected light, Proceedings of SPIE, Vol. 6188, p.618816. 1, (2006).

DOI: 10.1117/12.662691

[6] Yang Chen, Allen Y Yi, Donggang Yao, Fritz Klocke and Guido Pongs, A reflow process for glass microlens array fabrication by use of precision compression molding, Journal of Micromechanics and Microengineering, Vol. 18, (2008).

DOI: 10.1088/0960-1317/18/5/055022

[7] Gregory C. Firestone, Anurag Jain, and Allen Y. Yi, Precision laboratory apparatus for high temperature compression molding of glass lenses, Review of Scientific Instruments, Vol. 76, (2005).

DOI: 10.1063/1.1921367

[8] SCHOTT, Tie-40 optical glass for precision molding v3, (2006).

[9] SCHOTT, Tie-29 refractive index v2, (2005).