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A doublet lens has four surfaces with radii R 1 through R 2. Surfaces with positive radii curve away from the object (R 1 positive is a convex first surface); negative radii curve toward the object (R 1 negative is a concave first surface). The descriptions of the achromat lens designs mention advantages of designs that do not produce "ghost ...
An Achromatic telescope uses an achromatic lens to correct for this. An achromatic lens is a compound lenses made with two types of glass with different dispersion. One element, a concave lens made out of Flint glass, has relatively high dispersion, while the other, a convex element made of Crown glass, has a lower dispersion. The crown lens is ...
This list covers optical lens designs grouped by tasks or overall type. The field of optical lens designing has many variables including the function the lens or group of lenses have to perform, the limits of optical glass because of the index of refraction and dispersion properties, and design constraints including realistic lens element center and edge thicknesses, minimum and maximum air ...
The superachromat or superachromatic lens was first conceived and developed by Maximilian Herzberger as the ultimate well-corrected lens. The color shift curve of a superachromat is a quartic , meaning that in theory four separate colors can be brought to focus in the same plane, while simultaneously correcting spherical aberration and field ...
Reversed achromatic lens. Charles Chevalier's Paris optical firm produced lenses for both Niépce and Daguerre for their experiments in photography.In 1829 [3] [citation needed], Chevalier created an achromatic lens (a two-element lens made from crown glass and flint glass) to cut down on chromatic aberration for Daguerre's experiments.
Achromatic lens, a lens designed to minimize chromatic aberration; Achromatic vision: Monochromacy (total color blindness) Achromatopsia; Monochrome (disambiguation)
The Cooke triplet is a photographic lens designed and patented in 1893 by Dennis Taylor who was employed as chief engineer by T. Cooke & Sons of York. It was the first lens system that allowed the elimination of most of the optical distortion or aberration at the outer edge of the image.
Chester Moore Hall (9 December 1703, Leigh, Essex, England – 17 March 1771, Sutton) was a British lawyer and inventor who produced the first achromatic lenses in 1729 or 1733 (accounts differ). He used the achromatic lens to build the first achromatic telescope, a refracting telescope free from chromatic aberration (colour distortion). [1]
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