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What is an achromatic lens?

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

What's a chromatic aberration?

Chromatic aberration, also Called chromatic distortion and spherochromatism, is a result caused from dispersion due to the failure of a lens to focus all colours to the identical convergence point. When white light passes through glass, then each wavelength element of the light is separated and focuses at different points on a plane. Chromatic aberration appear as "fringes" of color along boundaries that separate bright and dark parts of the image, due to each colour in the optical spectrum cannot be concentrated at a single common point.

What is a spherical aberration?

Spherical aberration is an Optical effect which occurs 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 functioning 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 various amounts of dispersion.

Achromatic lenses use two Different glass materials of distinct dispersion to refocus the individual wavelengths of light into a single focal point.

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

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