Researchers at the National Research Council of Canada have introduced a novel 3D printing technique known as blurred tomography, which effectively produces high-quality microlenses with smooth surfaces. This method enhances the design and fabrication of optical devices by allowing rapid production with optical quality comparable to commercial glass lenses. By purposely incorporating optical blurring into the light beams, the technique avoids the striations typical in conventional methods, thus eliminating the need for lengthy post-processing to achieve smooth finishes.
In their study published in the journal Optica, the researchers successfully created a millimeter-sized plano-convex lens that matched the imaging performance of commercial counterparts, completing the process in just 30 minutes. The technique’s affordability and ability to create freeform designs hold promise for efficient prototyping in both commercial and non-commercial settings. Additionally, the team demonstrated that their microlens array could effectively image a business card, unlike arrays produced through traditional methods.
As they work to improve accuracy and introduce automation into the printing process, the researchers believe this approach could transform optical manufacturing, offering a cost-effective and quick alternative suitable for various applications.
