achromatic lens
Noun: A lens, or a system of lenses, designed to bring light of two or more different wavelengths (typically red and blue) to a common focus, thereby minimizing or eliminating chromatic aberration. Chromatic aberration is the optical effect where a lens fails to focus all colors to the same convergence point, resulting in colored fringes around images.
The term "achromatic lens" is used to describe a specific optical component in technical and scientific contexts. It is typically used as a countable noun.
Examples: * The microscope was fitted with a high-quality achromatic lens for clearer observation. * To correct for color distortion, the telescope's objective is an achromatic lens. * The improvement in image quality after switching to an achromatic lens was remarkable.
- "Doublet": A common type of achromatic lens made by cementing together two lenses made from different types of glass (e.g., crown glass and flint glass). While "achromatic doublet" is a more specific term, "achromatic lens" often implies this construction.
- The simplest design for an achromatic lens is an achromatic doublet.
- Apochromatic Lens: A more advanced lens system that corrects for three wavelengths, providing even better color correction than a standard achromatic lens. This is a related but distinct term.
- Achromat (noun): A shortened, technical synonym for an achromatic lens.
- Achromatic (adjective): Describing the property of being free from color. Can modify other nouns (e.g., achromatic prism, achromatic vision).
- Chromatic Aberration (noun): The optical flaw that an achromatic lens is designed to correct.
- Color-corrected lens
- Achromat
- Simple lens (a single-element lens that exhibits chromatic aberration)
- Uncrowned lens (non-technical, implies a lens without chromatic correction)
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a compound lens system that forms an image free from chromatic aberration
