anastigmat

American  

[uh-nas-tig-mat, an-uh-stig-mat] / əˈnæs tɪgˌmæt, ˌæn əˈstɪg mæt /

noun

Optics.

1. a compound lens corrected for the aberrations of astigmatism and curvature of field.

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anastigmat British  

/ æˈnæstɪɡˌmæt, ˌænəˈstɪɡmæt /

noun

1. a lens or system of lenses designed to be free of astigmatism

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Etymology

Origin of anastigmat

1885–90; < German, back formation from anastigmatisch anastigmatic

Example Sentences

In a true anastigmat, it is entirely eliminated.

From Kodaks and Kodak Supplies 1914 by Canadian Kodak Company

The Price Six-Three Kodak No. 1A, 2½ × 4¼, Cooke Kodak anastigmat lens, f.

From Kodaks and Kodak Supplies 1914 by Canadian Kodak Company

But an anastigmat lens can be so corrected as to permit the use of larger diaphragm openings and still produce sharp, clear negatives.

From Kodaks and Kodak Supplies 1914 by Canadian Kodak Company

B. & L. Automatic shutter   $35.00 Ditto, with Zeiss Kodak anastigmat lens, f.

From Kodaks and Kodak Supplies 1914 by Canadian Kodak Company

Both cameras offer the usual Kodak simplicity, and the exceptional lens and shutter equipment which assures the user the maximum of efficiency in all work where an anastigmat equipment is not necessary.

From Kodaks and Kodak Supplies 1914 by Canadian Kodak Company