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Diamond Turning Freeform Optics
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Diamond Turning Freeform Optics

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Abstract:

Freeform optics fabrication has become one of the hottest topics in optics industry in recent years. Although it still remains a challenge, many have tried different ways of manufacturing it. Some have achieved degrees of success. By means of a Nanotech 350-FG five axis diamond turning machine, we too have successfully produced some prototype freeform optics and lens arrays with Slow Tool Servo and Milling method. The produced freeform optics are mainly for automobile LED headlamps and the lens arrays are for LED illumination. In order to produce the freeform optics, we developed our own DT Slow Tool Servo program which is capable of generating a DT program for diamond turning a universal/general 3D freeform surface. Slow Tool Servo technique and Diamond Milling technique were mainly employed to produce these freeform surfaces. The manufacturing process and machining parameter details will be given in the paper. The two main methods we used will be compared and discussed as well. In measuring the freeform surface, a 3D white light interferometer was used to scan and obtain the surface coordinates. The software made by ourselves enabled us to compare the measure results of the work piece with that of the design drawings. The deviation of our finished forms is within 5 um from that of the nominal. The surface quality Rq is about 10 nm. Measuring equipment and methodology will also be discussed in the paper.

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Periodical:

Key Engineering Materials (Volumes 364-366)

Pages:

1-6

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.364-366.1

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Online since:

December 2007

Authors:

W. Jiang, Bill Tse, Roy Louie, Frankie Chan

Keywords:

Diamond Milling, Diamond Turning, Freeform, Lens Array, Measuring, Optical Testing, Programming, Slow Tool Servo

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© 2008 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] J. Michael Rodgers and Kevin P. Thompson, Benefits of Freeform Mirror Surfaces in Optical Design, P 73, Proceedings ASPE Winter Topical Meeting on Free-Form Optics: Design, Fabrication, Metrology, Assembly, February (2004).

DOI: 10.1117/12.551469

Google Scholar

[2] Roland Winston, Juan C. Minano and Pablo Benitez, Nonimaging Optics, ISBN: 0-12-759751- 4, p.219.

Google Scholar

[3] P. Benítez, J. C. Miñano, Simultaneous multiple surface optical design method in three dimensions, Opt. Eng., Vol: 43, no. 7, p.1489.

Google Scholar

[4] O. Dross, P. Benítez, J. C. Miñano, Review of SMS Design Methods and Real World Applications, Proc. SPIE 5529, (2004).

Google Scholar

[5] J. C. Miñano, P. Benítez, J. C. Gonzalez, W. Falicoff, H. J. Caulfield, SMS 2D Design method, High Efficiency Non-Imaging Optics, Patent No 6, 639, 733, (2003).

Google Scholar

[6] P. Benítez, J. C. Miñano, Three-Dimensional Simultaneous Multiple-Surface Method and FreeForm Illumination-Optics Designed Therefrom, Patents pending, US patent publication No 20050086032.

Google Scholar

[7] Wenda Jiang and Oliver Dross, Diamond Turning Freeform Optics, SPIE Aug. 2006 (San Diego) Annual Meeting, presentation.

Google Scholar

[8] Oliver Dross, J.C. Minano, Pablo Benitez, A. Cvetkovic, Julio Chavez, Non-imaging Optics Combine LEDs into one Bright Source, http: /newsroom. spie. org/x3596. xml.

DOI: 10.1117/2.1200605.0197

Google Scholar