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How do you define centration of a cylindrical lens? Usually, suppliers write something like “centration <3 arcmin” – how do they define centration?

Assuming that it is a typical type of monochromator with an exit slit, a cylindrical lens, or alternatively a mirror with a cylindrical surface, will indeed be a good solution. Just place it such that the front focal point of the lens or mirror is at the position of the slit.

We offer cylindrical lenses up to 100 mm width, λ/4 surface quality with centering of 2 arcmin. Plano-convex cylindrical lens, plano-concave cylindrical lens, bi-concave & bi-convex cylindrical lens. Achromatic cylinder lenses are also available.

Cylindrical lensvs sphericallens

Usually, the surface curvature of a cylindrical lens is of spherical type, but there are also aspheric cylindrical lenses. Further, there are cylindrical gradient-index lenses, not exhibiting any surface curvature.

Cylindrical lenses (also called cylinder lenses) are optical lenses which are curved only in one direction. Therefore, they focus or defocus light only in one direction, for example in the horizontal direction but not in the vertical direction. As for ordinary lenses, their focusing or defocusing behavior can be characterized with a focal length or its inverse, the dioptric power.

Cylindrical lensOptics

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Iscylindrical lensconcave or convex

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Dayoptics' engineers have many years experience on fabrication on cylindrical lenses. We can produce the products with high precision and specification consistancy based on our advanced inspection instrument for the lenses. The material used from UV to IR are fused silica, BK7, CaF2, S-TIH53 and others. The lens dimensions range from 1 mm × 1 mm to 100 mm × 100 mm.

Whycylindrical lensis used in astigmatism

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Cylindrical lenses can be used to obtain a beam focus of elliptical form. That can be required, for example, for feeding light through the entrance slit of a monochromator or into an acousto-optic deflector, or for conditioning pump light for a slab laser.

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Cylindrical glassesfor astigmatism

IRD Glass manufactures cylindrical optics, both convex and concave, from numerous substrate materials and with optical coatings like high laser damage threshold or anti-reflection coatings. Custom solutions are available in less time than from competitors, while still offering competitive pricing.

We use custom centering equipment to locate the center of curvature and custom ripple-checking equipment to ensure form and flatness of curves. Our machining, polishing, and grinding capabilities produce radii less than 2 mm or greater than 125 mm.

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Knight Optical‘s stock catalogue includes BK7 and UV fused silica cylindrical lenses designed to focus light across one plane rather than to a point. We currently offer 12.5mm to 150mm focal lengths, with AR-coated options available in the visible region. Custom cylindrical lenses can also be provided to meet bespoke requirements.

Cylindrical lens glassesprice

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As the name suggests, a cylindrical lens or cylinder lens is an optical lens with a cylindrical or semi-cylindrical shape. Like a spherical lens, a cylindrical lens has one curved and one flat side. Unlike a spherical lens, however, cylindrical lenses aren’t fully symmetrical — the orientation of a cylindrical lens affects how it transmits light.

Ecoptik offers cylindrical lenses with different substrate shapes and high surface accuracy. As one of the best optical components manufacturers, we monitor the quality of each individual lens using Trioptics centration measurement and a Zygo GPI interferometer. All Ecoptik lenses are available both uncoated or coated with a broad range of high durability, low loss AR coatings, and can be manufactured to 20–10 surface roughness.

Our cylindrical lenses are used in laser line generation, anamorphic beam shaping and one-dimensional compression of images in laser scanners, spectroscopy, dye lasers, acousto-optics, optical processors and other similar applications.

Cylindrical lensused for Which eye defect

Shalom EO offers plano-convex cylindrical lenses and plano-concave cylindrical lenses from various materials such as fused silica, BK7, optical glass, BaF2, CaF2, MgF2 and ZnSe (meniscus) and with circular or rectangular dimensions or other custom modules. Coating options include: uncoated, MgF2 single layer, V-type and broad band AR coating.

Edmund Optics selection of cylinder lenses include achromatic, acylinder, plano-convex, or plano-concave. Achromatic cylinder lenses provide additional color correction by minimizing chromatic aberration. Hybrid acylinder lenses are ideal for color correction, in addition to minimizing spherical aberration. Edmund Optics offers cylinder lenses with glass or plastic substrates, or with circular, rectangular, or oblong dimensions. Multiple anti-reflection coating options are available from the ultraviolet to the infrared, including UV-AR, UV-VIS, MgF2, VIS-NIR, VIS 0°, or NIR I. Edmund Optics offers full prescription data, in addition to 2D or 3D models.

Cylindrical lenses cause astigmatism of a laser beam: a mismatch of focus position for both directions. Conversely, they can also used for compensating astigmatism of a beam or an optical system. For example, they may be required for collimating the output of a laser diode such that one obtains a circular non-astigmatic beam.

UM Optics offers both plano-convex and plano-concave cylindrical lenses based on a wide range of materials and coatings, such as CaF2, K9, UVFS, Si, Ge and ZnSE.

Shanghai Optics offers cylindrical lenses e.g. with a dimension tolerance of ±30 μm or even ±10 μm, λ/4 or λ/8 surface irregularity and a centration better than 3 arcmin or even 1 arcmin.

EKSMA Optics offer a selection of uncoated plano-convex and plano-concave cylindrical lenses for quick delivery. Custom cutting, edging, coating or complete fabrication can be offered on request.

He Rui Optics offers cylindrical lenses based on a wide range of optical materials with up to 300 mm width and different surface quality levels.

Artifex Engineering offers custom plano-convex, plano-concave or achromatic cylindrical lenses. Achromatic cylindrical lenses significantly reduce chromatic, spherical and coma aberrations. Visit our product page for more information. We look forward to your inquiry.

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