anastigmatic

/æ,næstig'mætik/

Thân thiện

A photographer checks the anastigmatic lens on his camera.

Definition

1. Adjective:
   • Not astigmatic: Describes an optical condition or a person's eye that is free from astigmatism, a defect causing blurred vision due to an irregularly curved cornea or lens.
   • Pertaining to a lens or lens system free of astigmatism: Describes a lens or optical system that is corrected for astigmatism and is therefore able to form sharp, point-like images of a point source of light.

Usage Examples

• Adjective:
  • After her laser eye surgery, her vision became perfectly anastigmatic.
  • This high-quality camera lens is anastigmatic, producing images with exceptional edge-to-edge sharpness.

Advanced Usage

• Technical/Optical Context: The term is primarily used in technical fields like ophthalmology, optometry, photography, and microscopy.
  • The microscope's anastigmatic objective lens is crucial for detailed cellular imaging.

Variants and Related Words

• Anastigmat (noun): A lens or optical system that is corrected for astigmatism.
  • The photographer invested in a new anastigmat for his portrait work.

Synonyms

• Stigmatic (in optical contexts, meaning free from astigmatism).
• Corrected (for astigmatism).

Antonyms

• Astigmatic: Having or pertaining to astigmatism.

Học thuật

Adjective

1. not astigmatic
2. pertaining to a lens or lens system free of astigmatism (able to form point images)

Từ đồng nghĩa

• stigmatic