A novel micro-embossing equipment for manufacturing precision glass lenses with high image quality and resolution. (Credit: Hong Kong Polytechnic University)

Researchers have developed a new instrument for micro-embossing precision glass lenses with high image quality and resolution in a much more environmentally friendly way than conventional machines, saving power and reducing manufacturing costs by two-thirds.

A novel molding design with graphene-like coating and self-developed heating technology was used to produce the embossing machine. The use of graphene-like coating can heat up the optical glass precisely and quickly with low energy consumption, while reducing thermal expansion and deformation of the mold. The control and monitoring software developed provides online and instant readings of the temperature, which allows fine-tuning and adjustment of the process parameters, and thus shortens the cycle time.

Being a conductive material with high wear characteristic, graphene also enables smooth stripping of the glass workpiece from the mold after the embossing process. Furthermore, micro-pattern with micron accuracy can be replicated on the glass substrate.

Source 

Topics:
Medical

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