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What is an achromatic lens?

An achromatic lens or Achromat is a lens that is produced for the purpose of limiting the consequences of lens(chromatic and spherical) aberration. Achromatic lenses are adjusted to bring two wavelengths to concentrate in precisely the same plane.

What is a chromatic aberration?

Chromatic aberration, also Called chromatic distortion and spherochromatism, is an effect generated from dispersion due to the failure of a lens to focus all colors to the same 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 along borders that separate bright and dark parts of the image, due to each color in the optical spectrum can't be concentrated at a single common point.

What is a spherical aberration?

Spherical aberration is an Optical effect which happens in a lens as a result of gain of refraction of light rays as soon as it strikes the lens. The produced image will end in imperfection. Both this phenomenon signifies that the lens is not working normally.

Achromatic double lenses

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

Achromatic lenses utilize 2 Different glass substances of different dispersion to refocus the individual wavelengths of light into one focal point.

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

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