Virtual spindle based tool servo diamond turning of discontinuously structured microoptics arrays

Abstract We propose a virtual spindle based tool servo (VSTS) diamond turning method for the generation of discontinuously structured microoptics arrays. Uniqueness of the VSTS is that a virtual spindle axis (VSA) is constructed at any specified position by combining the multiple translational and rotational servo motions of the machine tool. Thereby, we can array the microstructure cell with a shape that can be generated in fast- or slow tool servo by controlling the VSA to sequentially pass through the centre of each cell. Feasibility of this technique is demonstrated by fabricating discontinuous microoptics arrays on both planar and freeform surfaces.

[1]  Suet To,et al.  Novel end-fly-cutting-servo system for deterministic generation of hierarchical micro-nanostructures , 2015 .

[2]  A. Senthil Kumar,et al.  An automated Guilloche machining technique for the fabrication of polygonal Fresnel lens array , 2015 .

[3]  Lei Li,et al.  Design and fabrication of a freeform microlens array for a compact large-field-of-view compound-eye camera. , 2012, Applied optics.

[4]  R. Gadonas,et al.  Femtosecond laser polymerization of hybrid/integrated micro-optical elements and their characterization , 2010 .

[5]  Yuichi Okazaki,et al.  Precision nano-fabrication and evaluation of a large area sinusoidal grid surface for a surface encoder , 2003 .

[6]  Qiang Liu,et al.  Development of pseudo-random diamond turning method for fabricating freeform optics with scattering homogenization. , 2013, Optics express.

[7]  Marco Fiorentino,et al.  A multi-directional backlight for a wide-angle, glasses-free three-dimensional display , 2013, Nature.

[8]  E. Brinksmeier,et al.  Generation of discontinuous microstructures by Diamond Micro Chiseling , 2014 .

[9]  J. Xie,et al.  Study on 5-axial milling on microstructured freeform surface using the macro-ball cutter patterned with micro-cutting-edge array , 2015 .

[10]  Xuesong Mei,et al.  Generation of fully-covering hierarchical micro-/nano- structures by nanoimprinting and modified laser swelling. , 2014, Small.

[11]  Xiaoqin Zhou,et al.  High‐Throughput Generation of Hierarchical Micro/Nanostructures by Spatial Vibration‐Assisted Diamond Cutting , 2016 .

[12]  Jaime Gilberto Duduch,et al.  Diamond turning of small Fresnel lens array in single crystal InSb , 2013 .