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What is an achromatic lens?

An achromatic lens or Achromat is a lens that's created for the purpose of limiting the effects of lens(chromatic and spherical) aberration. Achromatic lenses have been adjusted to attract two wavelengths to focus in precisely the same plane.

What's a chromatic aberration?

Chromatic aberration, also Called chromatic distortion and spherochromatism, is an effect generated from dispersion as a result of failure of a lens to focus all colours to the identical convergence point. When white light passes through glass, every wavelength element of the light is separated and focuses at several points onto a plane. Chromatic aberration appear as "fringes" of color combined boundaries that separate dark and bright parts of the image, due to every color in the optical spectrum cannot be focused at a single common point.

What's a spherical aberration?

Spherical aberration is an Optical effect which happens in a lens as a result of increase of refraction of light rays when it strikes the lens. The generated image will result in imperfection. Both this happening signifies that the lens is not working normally.

Achromatic double lenses

Achromatic doublet is the Most frequent type of achromat lens. Normally, it is composed of 2 separate lenses made from glasses with various amounts of dispersion.

Achromatic lenses use two Different glass substances of distinct dispersion to refocus the individual wavelengths of light to one focal point.

Achromatic lenses can be Used to correct the line of sight and focus laser beams. These lenses are widely used in high quality digital imaging, surface inspection, and spectroscopy applications.

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