Description and Application
A microlens is a small lens with a diameter on the micrometer scale. Microlenses are arranged in a one-dimensional or two-dimensional periodic array on a substrate to form a microlens array. The microlens array modulates light waves using its surface structures on the wavelength scale, dividing a complete laser wavefront into many tiny segments. Each segment is focused onto a focal plane by the corresponding small lens, resulting in a plane composed of many uniformly and regularly arranged focal points. Microlens arrays not only have the basic functions of traditional lenses, such as focusing and imaging, but also feature small size, light weight, and high integration, enabling them to perform functions that traditional optical components cannot achieve.
With the development of semiconductor processing technology, very small lenses can now be manufactured, advancing the miniaturization and integration of microlens arrays. This has enabled their application in various fields, such as optical information processing, optical interconnection, and optical computing. They are also used in photocopiers, image scanners, cameras, and medical devices. Microlens arrays can focus and collimate lasers and shape the laser beams. In fiber optic communication, they can improve the coupling efficiency of light entering the fiber. In optical microscopy, they can provide uniform illumination. Another application is in 3D imaging and display, where they are commonly used to achieve light field photography (full-field cameras), allowing cameras to skip the cumbersome focusing process before taking a picture.
Features: ②New Imaging Properties ③Uniform Illumination | Applications: ②3D Imaging and Display ③Smartphone Camera ④Digital Projector
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Parameters
Input Wavelength [nm] | 300—1100 |
Material | POG/Fused Silica/Plastic |
Lens Type | Plano-convex spherical surface /Plano-convex parabolic surface |
Lens Diameter | 300µm |
Distance | 30µm |
Focal Length | 18.6mm |
Fill Factor | 100% |
ArraySize | 10 mm ×10 mm×1.2mm |
Reflectivity | <1% |
Aperture | 9mm× 9mm |