Fabrication and correction of freeform surface based on Zernike polynomials by slow tool servo

Optifab 2017 ◽  
2017 ◽  
Author(s):  
Yuan-Chieh Cheng ◽  
Ming-Ying Hsu ◽  
Wei-Jei Peng ◽  
Wei-Yao Hsu
Keyword(s):  
Freeform Surface ◽  
Zernike Polynomials ◽  
Slow Tool Servo

Diamond Turning Freeform Optics

2007 ◽  
Vol 364-366 ◽  
pp. 1-6
Author(s):  
W. Jiang ◽  
Bill Tse ◽  
Roy Louie ◽  
Frankie Chan
Keyword(s):  
Diamond Turning ◽  
Freeform Surface ◽  
Work Piece ◽  
Freeform Optics ◽  
Milling Method ◽  
Slow Tool Servo ◽  
Optics Industry ◽  
Optics Fabrication ◽  
Five Axis ◽  
Machining Parameter

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.

Generation of freeform surface by using slow tool servo

2017 ◽  
Author(s):  
Vinod Mishra ◽  
Kamal K Pant ◽  
Dali Ramu Burada ◽  
Vinod Karar ◽  
Gufran S khan ◽  
...  
Keyword(s):  
Freeform Surface ◽  
Slow Tool Servo

Slow tool servo diamond turning of optical freeform surface for astigmatic contact lens

2011 ◽  
Author(s):  
Chun-Chieh Chen ◽  
Yuan-Chieh Cheng ◽  
Wei-Yao Hsu ◽  
Hsiao-Yu Chou ◽  
Pei-Jen Wang ◽  
...  
Keyword(s):  
Contact Lens ◽  
Diamond Turning ◽  
Freeform Surface ◽  
Slow Tool Servo

Freeform Surface Optical Components Machining by Slow Tool Servo Diamond Turning

2010 ◽  
Vol 47 (2) ◽  
pp. 022202
Author(s):  
关朝亮 Guan Chaoliang ◽  
戴一帆 Dai Yifan ◽  
尹自强 Yin Ziqiang
Keyword(s):  
Diamond Turning ◽  
Freeform Surface ◽  
Optical Components ◽  
Surface Optical ◽  
Slow Tool Servo

Freeform surface of progressive addition lens represented by Zernike polynomials

2016 ◽  
Author(s):  
Yiyu Li ◽  
Risheng Xia ◽  
Jiaojie Chen ◽  
Haihua Feng ◽  
Yimin Yuan ◽  
...  
Keyword(s):  
Freeform Surface ◽  
Zernike Polynomials ◽  
Progressive Addition Lens

scholarly journals Fabrication of high-precision freeform surface on die steel by ultrasonic-assisted slow tool servo

2021 ◽  
Vol 29 (3) ◽  
pp. 3708
Author(s):  
Yintian Xing ◽  
Chuang Li ◽  
Yue Liu ◽  
Chao Yang ◽  
Changxi Xue
Keyword(s):  
High Precision ◽  
Freeform Surface ◽  
Die Steel ◽  
Ultrasonic Assisted ◽  
Slow Tool Servo
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