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What's an achromatic lens?

An achromatic lens or Achromat is a lens that's produced with the goal of limiting the consequences of lens(chromatic and spherical) aberration. Achromatic lenses have been 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 an effect generated from dispersion as a result of failure of a lens to focus all colors to the identical convergence point. When white light passes through glass, then every wavelength component of the light is separated and focuses at different points on a plane. Chromatic aberration appear as "fringes" of color combined boundaries that separate dark and bright parts of the image, due to each colour in the optical spectrum can't be focused at a single common point.

What is a spherical aberration?

Spherical aberration is an Optical effect that occurs in a lens due to the gain of refraction of light rays as soon as it strikes the lens. The generated image will result in imperfection. Both this phenomenon signifies that the lens isn't working normally.

Achromatic double lenses

Achromatic doublet is your Most common type of achromat lens. Generally, it consists of 2 individual lenses made from glasses with various amounts of dispersion.

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

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

Shanghai Optics Specializes in manufacturing high precision custom Achromatic doublet lenses According to customer's specifications. For further infos take a look at f theta lens theory.