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Optical Glass | Edmund Optics

The Abbe diagram, first introduced by SCHOTT in 1923, is a long established survey of the optical glass program. Glass types are given in a two-dimensional coordinate system with the Abbe number (v d) as x-axis and the refractive index (n d) as y-axis. The x-axis is in reversed direction with numbers increasing to the left side (Figure 2).

Crown glass (optics) - Wikipedia

Crown glass is a type of optical glass used in lenses and other optical components. It has relatively low refractive index (≈1.52) and low dispersion (with Abbe numbers around 60). Crown glass is produced from alkali-lime silicates containing approximately 10% potassium oxide and is one of the earliest low dispersion glasses.

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25.4mm BK7 Optical Glass Plano Convex Conical lens (Axicons Lens) Plano-convex axicons lens is conical lenses which are used for variety of applications. When followed by a conventional spherical conical lens, conical axicon lens can focus laser light to a ring shape with annular focus.

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Optical Lenses are optical components designed to focus or diverge light, widely applicated from microscopy to laser processing. A Plano-Convex or Double-Convex lens causes light to focus to a point, while a Plano-Concave or Double-Concave lens diverges the light which traveling through the lens.

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Concave vs Convex Lenses- Optics for Kids | Synopsys

CONVEX or POSITIVE lenses will CONVERGE or FOCUS light and can form an IMAGE What is a concave lens? CONCAVE or NEGATIVE lenses will DIVERGE (spread out) light rays You can have mixed lens shapes too:

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Optical flat - Wikipedia

An optical flat is an optical-grade piece of glass lapped and polished to be extremely flat on one or both sides, usually within a few tens of nanometres (billionths of a meter). They are used with a monochromatic light to determine the flatness (surface accuracy) of other surfaces, whether optical, metallic, ceramic, or otherwise, by interference.

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Lens - Wikipedia

A lens is a transmissive optical device that focuses or disperses a light beam by means of refraction.A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (elements), usually arranged along a common axis.Lenses are made from materials such as glass or plastic, and are ground and polished or molded to a desired shape.

Magnifying glass - Wikipedia

Magnifying glasses typically have low magnifying power: 2×–6×, with the lower-power types being much more common. At higher magnifications, the image quality of a simple magnifying glass becomes poor due to optical aberrations, particularly spherical aberration.When more magnification or a better image is required, other types of hand magnifier are typically used.

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