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What's an achromatic lens?

An achromatic lens or Achromat is a lens that is produced with the goal of limiting the consequences of lens(chromatic and spherical) aberration. Achromatic lenses are adjusted to bring two wavelengths to focus in the exact 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 identical convergence point. When white light passes through glass, then each wavelength element of the light is separated and concentrates at several points onto a plane. Chromatic aberration seem as "fringes" of color along borders that separate dark and bright parts of the image, due to each color in the optical spectrum can't be focused at one common point.

What's a spherical aberration?

Spherical aberration is an Optical effect which happens in a lens due to the gain of refraction of light rays when it strikes the lens. The produced image will result in imperfection. Both this phenomenon suggests that the lens isn't functioning normally.

Achromatic double lenses

Achromatic doublet is the Most frequent sort of achromat lens. Generally, it is composed of 2 individual 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 to a single focal point.

Achromatic lenses may 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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