Microforging technique for fabrication of spherical lens array mold

This paper addressed a fabricating method for spherical lens array mold by microforging. The silicon nitride ceramic balls were performed as indenter on metal materials, such as aluminum alloy, to generate dimples with spherical cross-sectional profiles. Under the proper processing conditions, the s...

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Bibliographic Details
Published in:International journal of advanced manufacturing technology 2018-06, Vol.96 (9-12), p.3843-3850
Main Authors: Chang, Xuefeng, Xu, Keyu, Xie, Dan, Luo, Shanming, Shu, Xiayun, Ding, Huanqi, Zheng, Kang, Li, Bo
Format: Article
Language:English
Subjects:
Aluminum
Aluminum base alloys
Arrays
CAE) and Design
Cameras
Ceramic molding materials
Computer-Aided Engineering (CAD
Dimpling
Embossing
Engineering
Indentation
Industrial and Production Engineering
Lenses
Light spots
Mass production
Mechanical Engineering
Media Management
Morphology
Original Article
Product design
Retail sales
Silicon nitride
Surface properties
Underwater exploration
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Summary:This paper addressed a fabricating method for spherical lens array mold by microforging. The silicon nitride ceramic balls were performed as indenter on metal materials, such as aluminum alloy, to generate dimples with spherical cross-sectional profiles. Under the proper processing conditions, the spherical lens array mold was fabricated. The effects of indentation force, depth, and pressing time were experimentally investigated. In addition, the morphology and surface property of microforged mold were inspected. Subsequently, the thermoplastic polymer spherical lens array was formed through hot embossing process. The optical performance, such as light spots and focal lengths, was detected. This technique shows great potential for mass production of spherical lens array mold.
ISSN:0268-3768
1433-3015
DOI:10.1007/s00170-018-1719-1