Ultra-Precision Machining of Dies for Microlens Arrays Using a Diamond Cutting Tool

Takehisa Yoshikawa; Masayuki Kyoi; Yukio Maeda; Tomohisa Ohta; Masato Taya

doi:10.4028/www.scientific.net/KEM.407-408.359

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 407-408Ultra-Precision Machining of Dies for Microlens...

Ultra-Precision Machining of Dies for Microlens Arrays Using a Diamond Cutting Tool

Abstract:

Patterning of numerous microlenses on a surface improves the optical performance of components such as liquid crystal displays. A cutting method using a diamond tool is examined to fabricate a molding die that employs arbitrary array patterns to mold millions of microlenses. The present paper investigates machining of microlenses on the order of 2 kHz, using a piezo-actuated micro cutting unit and a synchronous control system of the cutting unit with an NC controller. Experiments using this system revealed that it is possible to machine a large number of microlenses on a molding die with high precision.

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Periodical:

Key Engineering Materials (Volumes 407-408)

Pages:

359-362

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.407-408.359

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Online since:

February 2009

Authors:

Takehisa Yoshikawa, Masayuki Kyoi, Yukio Maeda, Tomohisa Ohta, Masato Taya

Keywords:

Diamond Tool, Micro-Lens, Piezo, Ultra-Precision Machining

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References

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[7] [0] [1] [0] [0] Angle of source light (degree)　° Fig. 10　Reflection characteristics Luminance gain.

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