An aspheric lens and a spherical lens are optical elements with different types of surface curvatures. A spherical lens has a surface that forms part of a sphere and the curvature is constant across the whole surface. An aspherical lens has a curvature that varies across the surface, defined by a sag equation, which allows for more flexibility in the lens design to optimise the performance of the lens for a specific application.

By using aspherical lens elements, fibre optic applications experience improved signal clarity and transmission efficiency, making them ideal for high-bandwidth data communication networks.

Aspherical lenses have many properties that often make them a preference in an optical system. Firstly, by shaping the surface to a more complex curvature, and not a traditional spherical surface, aberrations within the system can be minimised – especially spherical aberration, as well as coma and astigmatism. In a traditional lens system utilising spherical lenses multiple lenses are often required to reduce the aberrations that one aspheric lens can achieve. This allows for a more compact design, as fewer optical elements are needed.

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This sub is dedicated to discussion and questions about Programmable Logic Controllers (PLCs): "an industrial digital computer that has been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, robotic devices, or any activity that requires high reliability, ease of programming, and process fault diagnosis."

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Aspherical lenses are used in a multitude of applications where factors such as image quality, compact design, and reduced aberrations are fundamental. Applications include telescopes, laser systems, medical imaging, virtual reality (VR) and augmented reality (AR) headsets, defence and aerospace, and automotive imaging systems.

Using aspherical lenses can streamline optical systems, eliminating the necessity for multiple lenses. This not only trims down the system’s weight but also results in significant cost savings.

Knight Optical has been operating for over 30 years, with our managing director Colin Overton at the helm. Over this time, we have become a global leader in the production and distribution of scientific optical components and bringing quality into focus for all of our products and services that we provide.

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Is this a standard? I'm running into a vendor that has the key between pins 1 and 4 and it totally screwing up my system I'm trying to commission.

The Milesight Smart Light Controller WS558 with central 8 lighting circuits control and 18 hours timing offers more flexible lighting control in buildings.

It is the distance from the lens to the film, when focused on a subject at infinity. In other words, focal length equals image distance for a far subject.

Knight Optical is proficient in crafting achromatic aspherical lenses that offer superior colour correction. By using aspherical optics, we ensure clarity and precision in every lens.

Please find our typical manufacturing capabilities for aspherical lenses below, however, we are always looking to expand and work with our customers on achieving their specifications, so please do not hesitate to contact our technical sales team for further information and guidance on your enquiry.

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Running into a funny issue. I'm used to M12 A-code 4-pin with pin 1 being brown, pin 2 being white, pin 3 being blue and pin 4 being black. And with pin 1 being next to pins 2 and 4 with the keyed part of the connector in between pins 1 and 2.

Mastering Focus Modes: A Guide for Photographers · Manual Focus Mode · Autofocus Mode · Back-Button Focus · Hybrid Focus Modes · Focus Recomposing vs. AF Point ...

An aspherical lens element has a more complex surface curvature compared to a traditional spherical lens, whose surface is part of a perfect sphere. This deviation from a sphere allows for correction of optical aberrations, such as spherical aberration, within the optical system, as the light rays are focused to a more precise point. This occurs as the curvature changes from the centre point and therefore as does the refraction of light through the surface, allowing the rays to focus more tightly. This surface curvature is defined by a sag equation and produces a sharper and improved image quality.

With our in-house state-of-the-art metrology laboratory you can be confident that your optical components will meet your requirements. You can find out more about our testing facilities here.

Inside Knight Optical’s catalogue you’ll find details of the industries we serve as well as the many other services we can offer. It also showcases hundreds of our most popular products, supported by useful technical information, to help you choose the right part for your application. Click below to view our digital catalogue now.

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Using the capabilities of aspherical lenses, laser beam shaping achieves unparalleled focus and direction, ensuring optimal energy distribution and enhanced performance in applications.

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The aspheric lens element profile is defined by a sag equation. It’s vital to understand that even though this aspherical optics design deviates from the traditional spherical surface, it maintains rotational symmetry, ensuring consistent performance.

Imaging systems, particularly those employing CCD/CMOS image sensors, greatly benefit from the precision and clarity offered by aspheres.

Exploring Sensor Sizes: Full Frame, APS-C, Micro Four Thirds, and More · Full Frame sensors: measure 36mm x 24mm and are the same size as traditional 35mm film.

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20221221 — Lighting is referred to as illumination geometry as the placement of the illumination in the system plays a key role in how it works with the object being ...

by K Masaoka · 2021 · Cited by 21 — The modulation transfer function (MTF) is a reliable indicator of the spatial performance of an optical system [1]. Analogous to its use in ...

An aspherical lens element is used to correct for spherical aberrations, where the converging rays from a lens do not have a common focal point. This is an issue often seen in traditional spherical lenses.

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Microscope objective lenses designed with aspherical lens elements boast a more compact design, offering a distinct size advantage over traditional spherical counterparts.