Describing a lens consisting of two or more optical components (elements), intended to correct for chromatic aberration. Commonly used as the objective of small refractors, the achromatic lens (or achromat) was invented in 1729 by the English optician Chester Moor Hall (1703–71) and first manufactured commercially by J. Dollond in 1758. It has one element of crown glass and another of flint glass. The dispersion (1) of the crown glass compensates for the chromatic error of the flint glass, while still leaving some refractive power. The two-element design is termed an achromatic doublet. It is practically impossible to correct all wavelengths of light, however, and most lenses adopt a compromise, bringing two particular wavelengths to a common focus, thus reducing the false colour. A lens that corrects for more than two wavelengths is termed an apochromatic lens.

Achromaticlens

Optical coherence tomography (OCT) is a noninvasive, high-resolution optical imaging technology that creates cross-sectional images from interference ...

Aspheric lenses are used to minimize optical aberrations within the human eye4. Parts of the eye including the tear film, cornea, and crystalline lens can ...

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Achromaticvs monochromatic

Feb 14, 2022 — 2 2242 merely the diameter of 22 mm and a length of 42 mm. Likewise, the M.2 2260 and M.2 2280 come with the measurements of 22 mm width and 60 ...

polarization. Polarization refers to the orientation of oscillations in a transverse wave, such as light waves, radio waves, or other electromagnetic waves. In ...

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Aspheric lenses excel in focusing light to a precise point, resulting in minimal blur and enhanced image quality.

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by GN Manion · 2023 · Cited by 1 — In SLT, polarized light is used to selectively target pigmented trabecular meshwork cells for destruction, which helps improve the flow of ...

Scientists use prisms to study the connections between the eye and the brain, as well as the general physics of light movement, speed, and characteristics.

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