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What's an achromatic lens?

An achromatic lens or Achromat is a lens that is created with the goal of restricting the effects of lens(chromatic and spherical) aberration. Achromatic lenses are adjusted to bring two wavelengths to concentrate in precisely the same plane.

What's a chromatic aberration?

Chromatic aberration, too 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 this light is separated and focuses at different points onto a plane. Chromatic aberration seem as "fringes" of color along boundaries that separate dark and bright parts of the image, due to each color in the optical spectrum cannot be concentrated at one common point.

What's a spherical aberration?

Spherical aberration is an Optical effect which 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 phenomenon suggests that the lens isn't working normally.

Achromatic double lenses

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

Achromatic lenses use two Different glass materials of different dispersion to refocus the individual wavelengths of light to a single 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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