apochromatic
Adjective 1. Corrected for both chromatic and spherical aberration: Describes a lens or optical system designed to bring three wavelengths of light (typically red, green, and blue) to a common focus point, thereby minimizing color fringing (chromatic aberration) and spherical distortion. * An apochromatic telescope provides exceptionally sharp and color-accurate images of celestial objects. * High-end microscope objectives are often apochromatic to ensure precise observation.
The term is a technical adjective used almost exclusively in the fields of optics, photography, astronomy, and microscopy. It describes the highest standard of color correction in a lens design. It is typically used attributively (before a noun).
Examples: * The photographer invested in an apochromatic lens for landscape work to eliminate color fringing in high-contrast scenes. * This apochromatic objective lens is essential for detailed histological examination. * Compared to an achromatic lens, an apochromatic design offers superior correction.
- Apochromatic correction / design: Refers to the engineering principle or method used to achieve apochromatic performance.
- The apochromatic correction in this lens involves the use of special low-dispersion glass elements.
- Apochromat (noun): A lens or optical system that is apochromatic.
- This telescope is a high-quality apochromat.
- Apochromatism (noun): The condition or property of being apochromatic.
- The apochromatism of the system is verified through spectral analysis.
- Color-corrected (a more general, less precise term).
- Apochromatic is a specific technical term with no perfect single-word synonym in common usage. Fully corrected or highly corrected can be used in descriptive explanations.
The word apochromatic has a single, specific technical meaning related to optics. It does not have other general or idiomatic meanings.
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corrected for both chromatic and spherical aberration
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an apochromatic lens
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