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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 are adjusted to attract two wavelengths to focus in precisely the same plane.

What is a chromatic aberration?

Chromatic aberration, too Called chromatic distortion and spherochromatism, is a result caused from dispersion due to the failure of a lens to focus all colors to the same convergence point. When white light passes through glass, then each wavelength component of this light is separated and focuses at different points on a plane. Chromatic aberration appear as "fringes" of color along borders that separate bright and dark parts of the image, due to every colour in the optical spectrum can't be concentrated at one common point.

What's a spherical aberration?

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

Achromatic double lenses

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

Achromatic lenses use 2 Different glass materials of distinct dispersion to refocus the individual wavelengths of light into one focal point.

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

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