Affiliation:
1. Hitachi Ltd.
2. Hitachi Limited
3. Toyama Prefectural University
4. Hitachi Chemical Co. Ltd.
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.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference10 articles.
1. Yuji, Y., Precision machining of Microlens Array Molding Die (2nd Report), Japan Society for Precision Engineering, Spring Meeting (2005), pp.785-786.
2. Suzuki, H., Study on Precision Cutting of Non-Axi-Symmetric Aspherical Surface (1st Report), Journal of the Japan Society for Precision Engineering, Vol. 65, No. 11 (1999), pp.1611-1616.
3. Ebihara, K., Study on high efficiency machining with reaction-free Shuttle Unit, Journal of the Japan Society for Precision Engineering, Vol. 73, No. 2 (2007), pp.220-225.
4. Yuichi, O., A Micro Positioning Tool Post using a Piezoelectric Actuator for Diamond Turning Machines, Journal of the Japan Society for Precision Engineering, Vol. 54, No. 7 (1988), pp.163-168. Fig. 8 Photograph of micro lens array on die surface.
5. 100.
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