There are also microlens arrays which are part of a larger assembly. For example, some CCD and CMOS image sensors contain one microlens per photodetector for increasing the light collection efficiency: all incident light should be concentrated to the active areas, which cover only part of the chip area.

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Holographix designs and produces cost-effective, high quality custom microlens arrays (MLAs) to customer specifications. We manufacture a wide range of polymer-on-glass MLAs using our proprietary UV replication technology. Our master molds are produced using a variety of mastering techniques, allowing us to offer replicated MLAs with a wide selection of possible lens profiles, packing configurations, sizes, and tolerances. We offer replicas in a range of refractive indices that are solder reflow compatible. Our manufacturing process and equipment allow us to produce precisely aligned single and double-sided MLAs with accurate polymer thickness and flatness control. We also offer wafer-level processing for customers that require high volume scalability.

Microlens arrays are available as separate optical components. Some of them are provided in mounted form, i.e., surrounded by some metal or polymer part which fits into standard optical mounts. The lenses are often equipped with anti-reflection coatings on both sides. Sometimes, the lenses are realized as a thin transparent structured layer contacted to a flat homogeneous glass or semiconductor substrate.

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In some cases, the phenomenon of surface tension is used for obtaining smooth and repeatable lens surface shapes. The resulting surface is then generally non-spherical, and not necessarily ideal with respect to optical aberrations.

If your lenses are in good shape and scratch-free, we can add the AR coating and send them back to you, good as new. The AR coating will reduce glare, improve ...

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The outer transverse shape is usually a square (e.g. 10 mm × 10 mm), or possibly a rectangle or circle. The number of microlenses can be thousands, possibly many thousands or even millions.

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One can also apply methods of laser material processing, forming only one lenslet at a time or possibly some number of them, using multiple processing beams. Such methods provide substantial versatility and flexibility, but are generally slow and expensive.

Microlens arrays (or micro-lens arrays) are one- or two-dimensional arrays of microlenses, i.e., rather small lenses (lenslets). In most cases, the lenslets form a periodic pattern either of square or hexagonal type, where the lens pitch is a few hundred micrometers, some tens of micrometers or even less.

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Lens arrays are usually produced with a micro-fabrication method which forms all microlenses in a single production step. For example, one may employ a photolithographic method, where the lens pattern is defined by a photolithographic mask, which can be of grayscale or binary type. (Partially, one uses techniques which are common in semiconductor processing technology, and are called wafer level optics.) Particularly in the area of plastic optics, one applies mechanical techniques such as molding, e.g. of epoxy materials.

Using our Nanoscribe Quantum X align tool, we can 3D print optical and mechanical microstructures directly onto surfaces such as fiber cores or photonic integrated circuits (PICs). This high-precision additive manufacturing process for microstructures is based on two-photon polymerization (2PP), in combination with state-of-the-art alignment technology. It enables a feature size down to 100 nanometers, with optical grade surface quality free from slicing steps. This allows full control over the optical properties of the printed optics. Not only can lenses be designed to focus or collimate light, but they can even take on aspherical shapes in order to correct for optical aberrations.

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Different optical materials can be used, such as fused silica, various other glasses or plastics (polymer materials). The choice of material must fit to the chosen production technique, but also has effects on various device properties, e.g. the usable spectral range and the mechanical and thermal stability.

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Shanghai Optics Inc custom micro-lenses are made from high index optical glass. They are precision polished to very high tolerances, so that they can be mounted into complex imaging systems.

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PowerPhotonic design and manufacture standard and custom micro lens arrays in 1D and 2D arrays. All products are manufactured out of high-grade fused silica and capable of both high efficiency and high power handling. Lenses can be spheric, aspheric or freeform due to our unique manufacturing process.

March 8, 2018 – OpTest® and LensCheck™ lens testing systems test MTF and other image quality measurements for lenses that range from small to 600mm in ...

Jul 15, 2024 — Plasma-Assisted Reactive Magnetron Sputtering (PARMS) uses a glow discharge plasma to accelerate positive ions onto a target. The plasma is ...

by H Kogelnik · 1966 · Cited by 5768 — Laser Beams and Resonators · 1 Reference planes of an optical system. · 2 Periodic sequence of identical systems, each characterized by its ABCD matrix. · 3 ...

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For a thin double convex lens, refraction acts to focus all parallel rays to a point referred to as the principal focal point. The distance from the lens to ...

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Microlens arrays are rigid arrangements of very tiny lenses, each with a diameter of less than 10 mm. They are precision polished to very high tolerances, so that they can be mounted into complex imaging systems. Specifications • Diameter: +0, -0.1mm • Surface accuracy: λ/2 @633nm or better • Thickness: ±0.2mm • Centration: ±0.04mm • Surface quality:20-10 • Bevel: 0.2mm typical • Material: SK2; BK7 and more