aspheric

Thân thiện

An aspheric lens focuses light more precisely than a spherical one.

Definition

1. Adjective:
   • Varying slightly from a perfectly spherical shape: Describes a surface or lens whose curvature is not perfectly spherical, often designed to correct optical aberrations.

Usage Examples

• Adjective:
  • Modern high-performance camera lenses often use aspheric elements to reduce distortion.
  • The contact lens was specially designed with an aspheric surface to provide a wider field of clear vision.

Advanced Usage

• Technical/Engineering Context: In optics and ophthalmology, "aspheric" precisely describes a surface profile that deviates from a sphere to improve performance.
  • The engineer specified an aspheric mirror for the telescope to eliminate spherical aberration.

Variants and Related Words

• Aspherical (adj): A variant form with identical meaning.
  • The terms aspheric and aspherical are often used interchangeably in lens design.
• Asphericity (n): The degree or quality of being aspheric.
  • The asphericity of the surface was measured with high precision.

Synonyms

• Non-spherical: Not having a perfectly round, spherical shape.
• Aplanatic: Corrected for spherical aberration (a specific type of aspheric design in optics).

Antonyms

• Spherical: Having the shape of a sphere; perfectly round.

Học thuật

Adjective

1. varying slightly from a perfectly spherical shape

Từ đồng nghĩa

• aspherical