Study on ultrafine machining of a complex microlens mold with a lenticular pattern on an aspherical surface

Tae-Jin Je; Eun-chae Jeon; Han-Hee Kim; Hwan-Jin Choi; Doo-Sun Choi

doi:10.1117/12.2021052

22 June 2013 Study on ultrafine machining of a complex microlens mold with a lenticular pattern on an aspherical surface

Tae-Jin Je, Eun-chae Jeon, Han-Hee Kim, Hwan-Jin Choi, Doo-Sun Choi

Author Affiliations +

Proceedings Volume 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013); 87693M (2013) https://doi.org/10.1117/12.2021052
Event: International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), 2013, Singapore, Singapore

Abstract

Demand for special optical components having the ability to concentrate and diffuse light effect has increased in order to improve luminance efficiency and function, relative to displays using micro lenses. There is a demand for design and machining technology for optical components that achieve various effects, among them the correction of light aberration and transmittance paths from aspherical surfaces with micro patterns. In this study, micro lens molds were machined that were able to simultaneously concentrate and diffuse light by means of lenticular patterns on aspherical surfaces. Two micro lens molds with micro lenticular pattern (pitch (P) of 10 and 100 μm) were machined on a sine type aspherical surface (amplitude (W) 0.15 mm and period (T) 3.0 mm). The micro lens molds were machined using an ultra-precision DTM (Diamond Turning Machine) and SSS (Slow Slide Servo). The micro lenses were replicated using PMMA resin; then light-transmission measurements were performed to confirm the effectiveness of the shape of various parts of the lenses on light-transmission. It was confirmed by measurement that concentration and diffusion light effects were simultaneously achieved.

Citation Download Citation

Tae-Jin Je, Eun-chae Jeon, Han-Hee Kim, Hwan-Jin Choi, and Doo-Sun Choi "Study on ultrafine machining of a complex microlens mold with a lenticular pattern on an aspherical surface", Proc. SPIE 8769, International Conference on Optics in Precision Engineering and Nanotechnology (icOPEN2013), 87693M (22 June 2013); https://doi.org/10.1117/12.2021052

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KEYWORDS

Aspheric lenses

Lenses

Diamond machining

Diamond turning

Diffusion

Optical components

Optics manufacturing

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