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- W2023166165 abstract "The glass used in the manufacture of lenses must be chemically stable and substantially free from bubbles, color, and striae. The lens designer is then concerned only with the refractive index and the dispersive power of the available glasses. Because practically every new lens must be achromatic, the positive elements used in it must be made from glass having a low dispersive power; the negative elements must have a relatively high dispersive power. The choice of refractive index is determined by many conflicting factors because the only “tools” available to the designer for the correction of many different aberrations are the radii of curvature of the lens surfaces, the thicknesses and air spaces, and the refractive indices of the glasses. The range of optical glasses commercially available and the reasons underlying the designer's selection of glass for different kinds of lenses are discussed." @default.
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- W2023166165 date "1944-06-01" @default.
- W2023166165 modified "2023-09-25" @default.
- W2023166165 title "OPTICAL GLASS FROM THE VIEWPOINT OF THE LENS DESIGNER*" @default.
- W2023166165 doi "https://doi.org/10.1111/j.1151-2916.1944.tb14890.x" @default.
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