What is an array lens?

NIL Technology offers a wide variety of custom microlens arrays with an easy selection of lens configurations and spherical or aspherical lens shapes. A microlens array is often useful for homogenizing and shaping many different modern light emitters ranging from a line-narrowed excimer lasers to high power LEDs.

• Addition of microlens arrays to CCD photodiodes can raise the optical fill factor by around three times that realized without the tiny optical components.
• Weighed against MEMS based technologies, ultraprecision machining is more desirable when it comes to producing microlens array on a mold with good uniformity in a big area.
• WY completed the studies in the reviews of the principles of compound eye and the fabrication methods.
• The microlens array and fibers are coaxially aligned and bring about collimated beams arranged in a 1D array to accommodate mirrors with a single tilt axis.
• Incident photons that strike the microlens are directed in to the photodiode by refraction through the glass or polymer comprising the microlens.
• Finally, the mold is completed following the removal of the mask layer.

obtained from current light field camera (less than 1200 × 900 pixels) is much less than the single-lens reflex camera.

Microlens Arrays Have Found Uses In A Wide Variety Of Optical Systems And Applications, Such As:

Furthermore, the fabricated profiles of the MLLA agree well with the designed profiles, and the morphology deviation of the MLLA is preferable to 2%, satisfying the application requirements. The results verify the feasibility and validity of the novel fabricating method. By adjusting mask patterns and processing parameters, MLLAs with both changeable sizes and focal lengths can be obtained. Axetris’ fiber coupling microlens arrays are optimized for coupling light efficiently to single mode fiber arrays for optical communication ■ Ultra compact size ■ Low insertion loss ■ High uniformity … An average lenslet placement scheme is illustrated in Figure 1, where a tiny optical lens is strategically placed on the dye layer and metal light shield of a photodiode.

• The finish product is affordable, miniaturized optics that enable the reduced form factor of camera modules for mobile devices.
• The array uniformity is of great importance in the imaging system, especially when the region of microlens array is large, and light retrace is needed for further process.
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• Furthermore, the fabricated profiles of the MLLA agree well with the designed profiles, and the morphology deviation of the MLLA is better than 2%, satisfying the application requirements.

microlens is usually formed in line with the surface tension effect when the material is in a thermoplastic state or liquid state resulting a super smooth surface . More importantly, these methods involve simple and cost-effective processes, which are preferred in industry.

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Colloidal micro-lenses also have enabled single molecule detection when used in conjunction with an extended working distance, low light collection efficiency objective lens. Another class of microlens, sometimes referred to as micro-Fresnel lenses, focus light by refraction in a couple of concentric curved surfaces. They will have grooves with stepped edges or multilevels that approximate the perfect shape.

The image resolution is at the mercy of both the number and size of the ommatidia. If the image resolution of compound eyes increases to exactly the same level as the human aperture eye, the radius of the overall lens would be at least 1 meter . In this application, the target is to generate a range of uniformly illuminated diffraction orders in the Fraunhofer diffraction plane. However, instead of observing the distribution in the focus plane of the microlenses, the distribution in the Fraunhofer diffraction plane is considered. In combination with a range of an additional phase correcting field lenses, this approach enables the efficient generation of a large number of orders with excellent uniformity in the intensity distribution. To this end, obviously the periodicity of the microlens array is useful and essential for the optical performance. In a digital projector, microlens arrays can be used to focus light on to the active section of the LCD to generate the image which is

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Processing software then produces a synthetic image drawn from a consideration of the many different depths where in fact the various rays could have landed. The light field camera disentangles the partnership between the depth of field and the aperture size, which traditionally entailed a trade-off between scope and clarity.