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An aspheric lens may have any of a number of geometries. Most of them are rotationally symmetric but have a more complex front surface. Unlike a spherical lens, the curvature changes with the distance from the optical axis. Another way of putting this would be to say that the radius of curvature varies radially from the center of the lens.

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By integrating controlled variations in curvature, optical engineers can utilize aspheric lenses to improve systems’ image qualities, create more compact and lightweight designs, and increase design flexibility.

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Aspheric lenses are more expensive to manufacture than are spherical lenses, but for high performance optics the benefits are significant. They also are a good option where a small footprint system is required as the aspheric lens lends itself well to compact assemblies.

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An aspheric camera lenses is a lens assembly that includes an aspheric lens among other components. The compact, lightweight assembly as well as the high image quality make these lenses highly desirable.

These two surfaces correspond with two types of mirrors, respectively: a plane mirror or a spherical mirror. Plane mirrors have a flat reflective surface and ...

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Custom Aspheric Lenses have important applications in high precision imaging. From aerospace night vision imaging optics to defense imaging, from microscope imaging objectives to semiconductor wafer inspection tools, they are essential components of many precision imaging devices. For instance, the Smite Cassegrain telescope uses them as well as reflective elements to reduce aberrations and create a high-resolution image. Optics manufacturers often prefer these solutions for their ability to deliver superior performance in demanding environments.

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Typically, the further from the optic axis, the weaker the curvature. A lens that does not have these symmetries is typically called a free-form optic.Aspheric lenses are defined by their surface profile (sag of the surface parallel to the optical axis) or by means of orthogonal coefficients Qbfs and Qcon. Qbfs quantifies the RMS slope departure of your aspheric lens from a best fit sphere,  and Qcon  quantifies the sag departure from a base conic.

Aspheric lenses are optical lenses with non-spherical surfaces (aspherical surfaces), meaning they have a changing curvature across the lens rather than a constant curvature, as seen in spherical lenses.  Because they contain controlled variations in curvature across the surface of the lens, they correct for the optical aberrations that occur with spherical lenses. Removing these aberrations has several important benefits:

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Our lenses are available with anti-reflection coatings or in uncoated forms, in glass, crystalline, or plastic substrates. State of the art grinding and polishing metrology equipment, including computer-controlled precision polishing devices and magneto-rheological finishing (MRF) technology, enable us to ensure that the surface quality is optimized for your application. MRF technology enables high-performance finishing results in significantly less time compared to conventional polishing methods due to its precise control of the removal location and rapid removal rate.

Lesson Summary. A prism is a three-dimensional shape with identical ends, called bases, and flat sides called faces. Each face always has four sides. The shape ...

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An aspheric lens is an optical lens with a non spherical surface profile; its surfaces are not portions of a sphere or cylinder. There are many types of custom aspheric lenses with various geometries. Unlike spheric lenses, they do not have a constant radius of curvature. They are designed to eliminate almost all spherical aberration, and by light focused to a small single point they drastically decrease the amount of blur and so improve image quality. Using aspheric lenses typically results in more compact assemblies as there are fewer aberrations to be corrected for. As an aspheric lens manufacturer, Avantier manufactures a wide variety of custom aspheric lenses solutions for applications from smartphones to lasers and fiber optics, from research and industry to medicine.

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If you have more questions about custom aspherical optical solutions and manufacturing services, don’t hesitate to contact us. Our experienced optical designers are always available to discuss a custom order. If you are looking for stock options, visit Stock – Asphere Lenses.

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