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Hexagonal Microlens Array
Optical Lenses

Hexagonal Microlens Array

Supplier
Zhilanweina
Category
Optical Lenses
Origin
China

Microlens arrays are typical micro/nano-optical elements: numerous micrometer-to-millimeter lenslets form two-dimensional periodic rectangular, hexagonal, or other patterns on one substrate. Each independently focuses light, modulates phase, divides wavefronts, homogenizes beams, or performs light-field imaging. They enable functions beyond conventional optics and new systems with low weight, small size, and easy integration. Definition: hexagonal microlens arrays have hexagonal lenslet apertures, as illustrated. Key parameters: 1. Pitch, adjacent lenslet-center spacing, determines density, typically tens of micrometers to millimeters; see figure. 2. EFL, individual focal length, determines focusing capability; see figure. 3. Fill factor, clear-area fraction. 5. Surface shape, mainly spherical, with aspheres for precise spherical-aberration correction. Principles: 1. Focusing. Each independent miniature converging lens follows refraction laws. Parallel light bends at the curved surface due to the lens/air index difference. Each aperture's sub-beam converges to an individual focus in its focal plane. 2. Imaging. Micrometer-to-millimeter convex lenslets use geometrical refraction, but small apertures require diffraction/wave-optics analysis in many situations. Parallel rays refract toward the axis and focus at F. Focal length f is the focus-to-principal-plane distance; u is object-to-lens distance and v image-to-lens distance. The source references Gaussian imaging without providing the expression. Infinite-distance objects form focal-plane spots; finite objects form real or virtual images on the other side, as stated. 3. Wavefront division. Hexagonal aperture boundaries divide continuous wavefronts into discrete lenslet-matched sub-wavefronts. After each lenslet acts on them, they recombine/overlap at the image plane for the target field. 4. Beam convergence. Each micrometer-to-millimeter convex lenslet retains conventional refractive convergence. Manufacturing/customization: the company describes itself as an early Chinese independent precision micro/nano-optics developer with years of R&D/industrial experience. Engineers in optical design, micro/nanofabrication, and precision inspection have extensive microlens-array/DOE experience to solve nonstandard designs/process challenges independently. Its integrated in-house lithography line develops and produces hexagonal arrays throughout. Pitch accuracy consistently reaches micrometer levels, overall figure uniformity is described as industry-leading, fill factors approach full coverage, and light utilization is high. Fused silica, silicon, germanium, and ZnSe cover UV through far IR. Custom antireflection and laser-resistant coatings tolerate intense light and maintain high/low-temperature performance. The team controls optical simulation, structural optimization, prototypes, batches, and complete outgoing inspection. Small university/research prototypes and large industrial orders are supported. Short lead times and dedicated engineer support provide quick setup/problem correction, with complete solutions for homogenization, Hartmann wavefront sensing, and light-field reconstruction. Hexagonal arrays are widely used in Hartmann sensing, light-field imaging, precision laser processing, CCD coupling, and thermal imaging. Process precision, stable quality, and after-sales support have secured long-term collaboration/recognition from research institutes and listed equipment makers. The company presents itself as one of few Chinese benchmark suppliers independently developing/mass-producing the full array chain, offering technical, capacity, and after-sales assurance. Page summary: arrays comprise lenslets tens to hundreds of micrometers across, with relief depths of hundreds of nanometers to micrometers. Image captions: hexagonal-array schematic; pitch schematic; focal-length schematic; hexagonal-array photograph; microscope test image.

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Overview

Microlens arrays are typical micro/nano-optical elements: numerous micrometer-to-millimeter lenslets form two-dimensional periodic rectangular, hexagonal, or other patterns on one substrate. Each independently focuses light, modulates phase, divides wavefronts, homogenizes beams, or performs light-field imaging. They enable functions beyond conventional optics and new systems with low weight, small size, and easy integration. Definition: hexagonal microlens arrays have hexagonal lenslet apertures, as illustrated. Key parameters: 1. Pitch, adjacent lenslet-center spacing, determines density, typically tens of micrometers to millimeters; see figure. 2. EFL, individual focal length, determines focusing capability; see figure. 3. Fill factor, clear-area fraction. 5. Surface shape, mainly spherical, with aspheres for precise spherical-aberration correction. Principles: 1. Focusing. Each independent miniature converging lens follows refraction laws. Parallel light bends at the curved surface due to the lens/air index difference. Each aperture's sub-beam converges to an individual focus in its focal plane. 2. Imaging. Micrometer-to-millimeter convex lenslets use geometrical refraction, but small apertures require diffraction/wave-optics analysis in many situations. Parallel rays refract toward the axis and focus at F. Focal length f is the focus-to-principal-plane distance; u is object-to-lens distance and v image-to-lens distance. The source references Gaussian imaging without providing the expression. Infinite-distance objects form focal-plane spots; finite objects form real or virtual images on the other side, as stated. 3. Wavefront division. Hexagonal aperture boundaries divide continuous wavefronts into discrete lenslet-matched sub-wavefronts. After each lenslet acts on them, they recombine/overlap at the image plane for the target field. 4. Beam convergence. Each micrometer-to-millimeter convex lenslet retains conventional refractive convergence. Manufacturing/customization: the company describes itself as an early Chinese independent precision micro/nano-optics developer with years of R&D/industrial experience. Engineers in optical design, micro/nanofabrication, and precision inspection have extensive microlens-array/DOE experience to solve nonstandard designs/process challenges independently. Its integrated in-house lithography line develops and produces hexagonal arrays throughout. Pitch accuracy consistently reaches micrometer levels, overall figure uniformity is described as industry-leading, fill factors approach full coverage, and light utilization is high. Fused silica, silicon, germanium, and ZnSe cover UV through far IR. Custom antireflection and laser-resistant coatings tolerate intense light and maintain high/low-temperature performance. The team controls optical simulation, structural optimization, prototypes, batches, and complete outgoing inspection. Small university/research prototypes and large industrial orders are supported. Short lead times and dedicated engineer support provide quick setup/problem correction, with complete solutions for homogenization, Hartmann wavefront sensing, and light-field reconstruction. Hexagonal arrays are widely used in Hartmann sensing, light-field imaging, precision laser processing, CCD coupling, and thermal imaging. Process precision, stable quality, and after-sales support have secured long-term collaboration/recognition from research institutes and listed equipment makers. The company presents itself as one of few Chinese benchmark suppliers independently developing/mass-producing the full array chain, offering technical, capacity, and after-sales assurance. Page summary: arrays comprise lenslets tens to hundreds of micrometers across, with relief depths of hundreds of nanometers to micrometers. Image captions: hexagonal-array schematic; pitch schematic; focal-length schematic; hexagonal-array photograph; microscope test image.

Specifications

ParameterValue
Substrate MaterialFused Silica, Silicon, Germanium, Zinc Selenide

Applications

Shack-Hartmann sensing: each microlens subaperture divides the beam and focuses its portion onto a CCD/CMOS spot. A planar wavefront gives reference positions on lens axes; distortion, tilt, or aberration shifts the spots. Algorithms use offsets to reconstruct the full wavefront and detect error. Light-field cameras: each hexagonal microlens spatially samples and independently images object points in its field into corresponding array pixels. Registering intensity and arrangement enables image transfer, multiaperture stitching, or joint phase/intensity reconstruction. Laser homogenization: converts Gaussian or other nonuniform input to a uniform flat-top. Single-array or dual-array schemes, classically MLA1+MLA2, overlap sub-beams by interference or geometric superposition rather than focusing an image, producing rectangular flat-top spots for industrial lasers and lithographic illumination. IR focal-plane coupling: concentrates light on detector elements; focal-plane arrangement and energy concentration provide dense spot arrays, parallel lithography, or tailored target irradiance.

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Supplier Information

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Zhilanweina
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Chengdu Zhilan Micro-Nano Technology Co., Ltd. focuses on micro-nano optics, engaging in the design, fabrication, and application of micro-nano optical structures. The company masters continuous-surface micro-optical element processing technology based on grayscale modulation, capable of designing high-performance microlens arrays, diffractive optical elements (DOE), complex field modulation elements, etc. Products include microlens arrays, phase plates, DOEs, gratings, photomasks, etc., which have been applied in space exploration, 3D imaging, optoelectronic measurement, smart home, human-computer interaction, and other fields, cooperating with nearly a hundred domestic institutions. Adhering to the principle of customer first, the company provides professional services in optical design, component processing, system integration, etc.

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