compound lens

Thân thiện

A scientist adjusts a compound lens on a microscope.

Definition

1. Noun:
   • A lens system consisting of two or more lenses on the same axis: A "compound lens" is an optical device where multiple individual lenses are aligned along a common optical axis to perform a specific function, such as correcting aberrations or achieving a desired focal length, that a single lens cannot achieve as effectively.

Usage Examples

• Noun:
  • A modern camera typically uses a compound lens to produce sharp, clear images.
  • The microscope's objective is a sophisticated compound lens designed to minimize chromatic aberration.
  • Designing a compound lens requires precise calculation of the curvature and position of each element.

Advanced Usage

• "Achromatic compound lens": A specific type of compound lens designed to bring two wavelengths of light (typically red and blue) to the same focus, reducing color fringing.

  • An achromatic compound lens is essential for high-quality telescopes and microscopes.

• "Compound lens assembly": Refers to the complete, often housed, unit containing the aligned lenses.

  • The technician carefully cleaned the delicate compound lens assembly.

Variants and Related Words

• Lens element (n): A single piece of glass or other transparent material that is one component of a compound lens.

  • This design uses five separate lens elements.

• Lens system (n): A broader term for any arrangement of lenses working together, which includes compound lenses.

  • The projector's lens system includes both simple and compound lenses.

Synonyms

• Lens combination: A system of lenses.
• Multi-element lens: A lens comprised of several optical elements.

Related Phrases

• To correct for spherical aberration: A common purpose of using a compound lens design.

  • The compound lens was engineered to correct for spherical aberration.

• To have a cemented doublet: A type of compound lens where two lens elements are permanently bonded together.

  • The objective features a cemented doublet to reduce internal reflections.

Học thuật

Noun

1. a lens system consisting of two or more lenses on the same axis