We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Fabrication of Microlens Array and Its Application: A Review
Summary
Researchers reviewed fabrication methods for microlens arrays — tiny optical components used in 3D imaging and sensors — finding that indirect mold-based replication techniques offer the best path to producing large, uniform arrays with precise geometry. Key remaining challenges include achieving uniform surface quality across large curved surfaces and reducing manufacturing variability.
Microlens arrays are the key component in the next generation of 3D imaging system, for it exhibits some good optical properties such as extremely large field of view angles, low aberration and distortion, high temporal resolution and infinite depth of field. Although many fabrication methods or processes are proposed for manufacturing such precision component, however, those methods still need to be improved. In this review, those fabrication methods are categorized into direct and indirect method and compared in detail. Two main challenges in manufacturing microlens array are identified: how to obtain a microlens array with good uniformity in a large area and how to produce the microlens array on a curved surface? In order to effectively achieve control of the geometry of a microlens, indirect methods involving the use of 3D molds and replication technologies are suggested. Further development of ultraprecision machining technology is needed to reduce the surface fluctuation by considering the dynamics of machine tool in tool path planning. Finally, the challenges and opportunities of manufacturing microlens array in industry and academic research are discussed and several principle conclusions are drawn.
Sign in to start a discussion.
More Papers Like This
Microlenses arrays: Fabrication, materials, and applications
This review covers fabrication methods, materials, and applications of microlens arrays, examining manufacturing approaches from direct writing to soft lithography and their use in imaging, sensing, and display technologies.
Alignment error modeling and control of a double-sided microlens array during precision glass molding
Researchers developed a new mold assembly design using materials with different heat expansion rates to precisely control the alignment of double-sided microlens arrays — tiny optical components used in light-shaping devices — during the glass molding process, achieving an alignment error of only 10.56 micrometers. The method improves manufacturing precision for optical components used in applications ranging from imaging to sensors.
Manufacturing of Micro-Lens Array Using Contactless Micro-Embossing with an EDM-Mold
This study developed a new method for creating micro-lens arrays using contactless micro-embossing with an EDM mold, offering a low-cost, high-volume approach to micro-scale polymer fabrication. Polymer micro-fabrication methods have implications for understanding how plastic manufacturing processes generate microplastic particles.
Revolutionizing contact lens manufacturing: exploring cutting-edge techniques and innovations for enhanced vision and comfort
This review covers advances in contact lens manufacturing, including new materials, 3D printing techniques, and nanotechnology coatings for better comfort and vision. While not directly about microplastics, contact lenses are a known source of microplastic pollution when disposed of improperly, and the polymer materials used in lenses can shed microplastic particles. The development of more biocompatible lens materials could have implications for reducing microplastic exposure to the eye and the environment.
Microplastic Structures
This paper describes a photolithography technique for creating microscale three-dimensional plastic structures from photoresist material for use in optical and mechanical devices. The term 'microplastic' refers to the miniature scale of the structures produced and is unrelated to environmental plastic pollution.