Failure of a lens to focus all colors on the same point
Not to be confused with Chromosome aberration.
Focal length of lens varies with the color of lightPhotographic example showing high quality lens (top) compared to lower quality model exhibiting transverse chromatic aberration (seen as a blur and a rainbow edge in areas of contrast)
In optics, chromatic aberration (CA), also called chromatic distortion and spherochromatism, is a failure of a lens to focus all colors to the same point.[1] It is caused by dispersion: the refractive index of the lens elements varies with the wavelength of light. The refractive index of most transparent materials decreases with increasing wavelength.[2] Since the focal length of a lens depends on the refractive index, this variation in refractive index affects focusing.[3] Chromatic aberration manifests itself as "fringes" of color along boundaries that separate dark and bright parts of the image.
^Marimont, D. H.; Wandell, B. A. (1994). "Matching color images: The effects of axial chromatic aberration" (PDF). Journal of the Optical Society of America A. 11 (12): 3113. Bibcode:1994JOSAA..11.3113M. doi:10.1364/JOSAA.11.003113. Archived from the original (PDF) on 2016-03-05. Retrieved 2015-08-28.
^Thibos, L. N.; Bradley, A; Still, D. L.; Zhang, X; Howarth, P. A. (1990). "Theory and measurement of ocular chromatic aberration". Vision Research. 30 (1): 33–49. doi:10.1016/0042-6989(90)90126-6. PMID 2321365. S2CID 11345463.
^Kruger, P. B.; Mathews, S; Aggarwala, K. R.; Sanchez, N (1993). "Chromatic aberration and ocular focus: Fincham revisited". Vision Research. 33 (10): 1397–411. doi:10.1016/0042-6989(93)90046-Y. PMID 8333161. S2CID 32381745.
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overcorrection), which makes use of the longitudinal chromaticaberration of the eye. Because of the chromaticaberration of the eye, the shorter wavelengths (green)...
position, i.e., multiple mask exposures per layer. The above-mentioned chromaticaberrations, due to mask-induced apodization, also lead to inconsistent source-mask...
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camera. In a later design he added a cemented doublet to correct chromaticaberration. Dmitri Maksutov built a prototype for a similar type of meniscus...
surface. Each element is designed to reduce optical aberrations, or distortions, such as chromaticaberration (a failure of the lens to focus all colors at...
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