lens system
Definition
Noun: 1. An optical device: A transparent object, typically made of glass or plastic, with one or more curved surfaces. It is designed to bend (refract) rays of light, causing them to either converge (come together) or diverge (spread apart). This action is used to form images, magnify objects, or correct vision.
Usage
The term "lens system" refers to the optical component itself. It is a technical term commonly used in physics, photography, optics, and ophthalmology. * In a camera, the lens system focuses light onto the film or digital sensor. * A microscope uses a complex lens system to magnify tiny specimens. * Eyeglasses contain a lens system that corrects refractive errors in the eye.
Examples
- The quality of a telescope depends heavily on the precision of its lens system.
- She cleaned the lens system of her binoculars before the bird-watching trip.
- Modern smartphone cameras often incorporate multiple lens elements into a single, compact lens system.
Advanced Usage
- Compound Lens System: This refers to a lens made by combining several simple lens elements to correct optical aberrations (flaws) like chromatic aberration or distortion. High-quality cameras and microscopes use compound lens systems.
- In figurative use, a "lens" can mean a particular perspective, but the specific term "lens system" is not used figuratively; it retains its literal, technical meaning.
Variants and Related Words
- Lens (noun): The more common and general term. "Lens system" is often synonymous with "lens," especially when referring to a complex assembly. Example: .
- Optical lens (noun phrase): A more descriptive term emphasizing the function of bending light.
- Objective lens (noun phrase): The primary light-gathering lens in a device like a microscope or telescope.
- Eyepiece (noun): The lens or lens system you look through in an optical instrument.
Synonyms
- Optical device
- Glass (informal, especially in photography, e.g., "fast glass" for a lens with a wide aperture)
Antonyms
- Mirror (an optical device that reflects, rather than refracts, light to form images).
Noun
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a transparent optical device used to converge or diverge transmitted light and to form images
