Microlens Arrays
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Microlens arrays contain multiple microlenses (small lenses – diameter ranging from 1mm to 10µm) formed in a one-dimensional or two-dimensional array on a supporting substrate, which is generally thicker than the lens to support the structure. The arrays work with very high optical loads.
Microlens array materials include UV-grade fused silica, silicon, glass, and polymers. Syntec Optics can diamond turn or mold the arrays depending on the production volume. Using standard semiconductor technologies like photolithography, resist processing, and reactive ion etching to manufacture the arrays yields precise lens positioning within an array.
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These microstructures provide optimum spectral efficiency (UV to far IR). Refractive microlens arrays offer perfect operation for the entire wavelength range: Silicon from 1.2µm to 5µm and Fused Silica from 193nm to 3µm. Anti-reflective coatings can optimize the transmission for selected wavelength ranges. We can specify the lateral dimension range of the arrays as – micro-scale: some millimeters, macro-scale: up to 30 millimeters. The array structure dimensions are typically in the sub-millimeter range.
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Some of the applications of microlens arrays are displays, machine vision, optical computing, 3D imaging, astronomy, micro-machining, diode laser collimation, laser-fiber coupling, optical switching, multiplexing, and beam bundling for medical instruments, opto-sensorics, telecommunications, laser optics, measurement systems, and sensors. These applications require high efficiency and non-gaussian uniformity. Refractive microlenses are valuable alternatives for applications demanding miniaturization and reduced costs of alignment packaging.
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Syntec Optics provides microlens arrays with both orthogonal and hexagonal arrangements. We manufacture high-quality replicated arrays. We are continuously expanding our microlens array capabilities to serve our customers better. Over the years, we have developed technologies in mold building for integrated lens arrays. The development of further miniaturization and higher precision continues.
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Advantages of microlens arrays designed and manufactured by Syntec Optics include long-term stability, monolithic structure, increased transmission, efficient transformation and homogenization, and beam shaping. Our state-of-the-art metrology lab enables the diagnosis of the relevant product characteristics and ensures the specified quality. Contact Syntec Optics for more information about microlens arrays.
What are microlens arrays?
Microlens arrays contain multiple microlenses (small lenses – diameter ranging from 1mm to 10µm) formed in a one-dimensional or two-dimensional array on a supporting substrate, which is generally thicker than the lens to support the structure. Microlens arrays work with very high optical loads.
What is a microlens array used for?
Microlens arrays increase optical devices’ light collection efficiency in sensing, imaging, display, and projection applications.
How are microlens arrays made?
Syntec Optics can diamond turn or mold microlens arrays depending on the production volume.
What materials are used to make microlens arrays?
UV-Grade Fused Silica, Silicon, Glass, and Polymers
What are the applications of microlens arrays?
Displays, Machine Vision, Optical Computing, 3D Imaging, Astronomy, Micro-Machining, Diode Laser Collimation, Laser-Fiber Coupling, Optical Switching, Multiplexing, and Beam Bundling for Medical Instruments, Opto-Sensorics, Telecommunications, Laser Optics, Measurement Systems, and Sensors